PLANET SGS-5220-24S2XR User's manual
Planet SGS-5220-24S2XR is a versatile and powerful managed switch designed for demanding network environments. With its advanced Layer 2+ features, SFP/SFP+ uplink ports, and robust stacking capabilities, this switch provides a comprehensive solution for high-performance network connectivity.
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User’s Manual of SGS-5220 Series
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User’s Manual of SGS-5220 Series
Trademarks
Copyright © PLANET Technology Corp. 2015.
Contents are subject to revision without prior notice.
PLANET is a registered trademark of PLANET Technology Corp. All other trademarks belong to their respective owners.
Disclaimer
PLANET Technology does not warrant that the hardware will work properly in all environments and applications, and makes no warranty and representation, either implied or expressed, with respect to the quality, performance, merchantability, or fitness for a particular purpose. PLANET has made every effort to ensure that this User's Manual is accurate; PLANET disclaims liability for any inaccuracies or omissions that may have occurred.
Information in this User's Manual is subject to change without notice and does not represent a commitment on the part of
PLANET. PLANET assumes no responsibility for any inaccuracies that may be contained in this User's Manual. PLANET makes no commitment to update or keep current the information in this User's Manual, and reserves the right to make improvements to this User's Manual and/or to the products described in this User's Manual, at any time without notice.
If you find information in this manual that is incorrect, misleading, or incomplete, we would appreciate your comments and suggestions.
FCC Warning
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the Instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
CE Mark Warning
This is a Class A product. In a domestic environment, this product may cause radio interference, in which case the user may be required to take adequate measures.
Energy Saving Note of the Device
This power required device does not support Standby mode operation. For energy saving, please remove the power cable to disconnect the device from the power circuit. In view of saving the energy and reducing the unnecessary power consumption, it is strongly suggested to remove the power connection for the device if this device is not intended to be active.
WEEE Warning
To avoid the potential effects on the environment and human health as a result of the presence of hazardous substances in electrical and electronic equipment, end users of electrical and electronic equipment should understand the meaning of the crossed-out wheeled bin symbol. Do not dispose of
WEEE as unsorted municipal waste and have to collect such WEEE separately.
Revision
PLANET L2+ Managed Stackable Switch User's Manual
FOR MODEL: SGS-5220 Series
REVISION: 1.1 (Sep 2015)
Part No: EM-SGS-5220-Series_v1.1
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User’s Manual of SGS-5220 Series
TABLE OF CONTENTS
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1. INTRODUCTION
PLANET L2+ Stackable Managed Switch, SGS-5220 series, comes with the multi-port Gigabit Ethernet Switch and SFP fiber optic connectibility and robust layer 2 features. The description of this model is shown below:
SGS-5220-24T2X
L2+ 24-Port 10/100/1000T + 4-Port Shared SFP + 2-Port 10G SFP+ Stackable Managed
Switch
SGS-5220-24P2X
SGS-5220-24S2XR
L2+ 24-Port 10/100/1000T 802.3at PoE + 4-Port Shared SFP + 2-Port 10G SFP+
Stackable Managed Switch
L2+ 24-Port 100/1000BASE-X SFP with 8-Port Shared TP + 2-Port 10G SFP+ Stackable
Managed Switch
“Managed Switch” is used as an alternative name in this user’s manual.
1.1 Packet Contents
Open the box of the Managed Switch and carefully unpack it. The box should contain the following items:
Model Name
SGS-5220-24T2X SGS-5220-24P2X SGS-5220-24S2XR
The Managed Switch
Quick Installation Guide
DB9 to RJ45 Consol Cable
Rubber Feet
Rack Mount Accessory Kit
AC Power Cord
SFP Dust-proof Cap x 8 x 1 x 1 x 1 x 4 x 1 x 1 x 8 x 28
If any of these are missing or damaged, please contact your dealer immediately; if possible, retain the carton including the original packing material, and use them again to repack the product in case there is a need to return it to us for repair.
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1.2 Product Description
High-Density, Resilient Deployment Switch Solution for Gigabit Networking of Enterprise, Campus and Data Center
For the growing Gigabit network and IoT (Internet of Things) demand, PLANET has launched a new-generation Stackable
Gigabit Switch solution, the SGS-5220 switch series, to meet the needs of enterprises, telecoms and campuses for a large-scale network deployment. The SGS-5220 switch series is Layer 2+ Stackable Managed Gigabit Switch, which supports both IPv4 and IPv6 protocols and hardware Layer 3 static routing capability, and provides 24 10/100/1000Mbps Gigabit
Ethernet ports, 4 shared Gigabit SFP slots, 2 10G SFP+ uplink slots and another 2 dedicated 10G SFP+ stacked
interfaces for stacking with the series of switches. Up to 16 units, 384 Gigabit Ethernet ports and 32 10Gbps SFP+ slots can be managed by a stacking group and you can add ports and functionality as needed.
Efficient Single IP Management
The SGS-5220 series applies the advantage of the stacking technology to managing the stack group with one single IP address, which helps network managers to easily manage a stack of switches instead of connecting and setting each unit one by one.
The stacking technology also enables the chassis-based switches to be integrated into the SGS-5220 Managed Switch series at an inexpensive cost.
Highly-reliable Stacking Ability
Through its up to 40Gbps, bi-directional high bandwidth tunnel and stacking technology, the SGS-5220 switch series gives the enterprises, service providers and telecoms flexible control over port density, uplinks and switch stack performance. The stack redundancy of the SGS-5220 switch series ensures that data integrity is retained even if one switch in the stack fails. You can even hot-swap switches without disrupting the network, which greatly simplifies the tasks of upgrading the LAN for catering to increasing bandwidth demands.
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Cost-effective 10Gbps Uplink Capacity
10G Ethernet is a big leap in the evolution of Ethernet. The two 10G SFP+ slot of the SGS-5220 switch series supports
Dual-speed, 10GBASE-SR/LR or 1000BASE-SX/LX, meaning the administrator now can flexibly choose the suitable
SFP/SFP+ transceiver according to the transmission distance or the transmission speed required to extend the network efficiently. They greatly support SMB network to achieve 10Gbps high performance in a cost-effective way because 10GbE interface usually could be available in Layer 3 Switch but Layer 3 Switch could be too expensive to SMBs.
Solution for IPv6 Networking
By supporting IPv6/IPv4 dual stack and plenty of management functions with easy and friendly management interfaces, the
SGS-5220 series is the best choice for IP surveillance, VoIP and wireless service providers to connect with the IPv6 network. It also helps the SMB to step in the IPv6 era with the lowest investment but not necessary to replace the network facilities while the ISP constructs the IPv6 FTTx edge network.
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IPv4 and IPv6 VLAN Routing for Secure and Flexible Management
To help customers stay on top of their businesses, the SGS-5220 switch series not only provides ultra high transmission performance and excellent layer 2 technologies, but also offers IPv4/IPv6 VLAN routing feature which allows to crossover different VLANs and different IP addresses for the purpose of having a highly secured, flexible management and simpler networking application.
Robust Layer2 Features
The SGS-5220 series can be programmed for advanced switch management function, such as dynamic port link aggregation,
Q-in-Q VLAN, Multiple Spanning Tree Protocol (MSTP), Layer 2/4 QoS, bandwidth control and IGMP/MLD snooping. The
SGS-5220 series allows the operation of a high-speed trunk combining multiple ports. It enables up to 14 groups of 8 ports for trunk maximum and supports connection fail-over as well.
Powerful Security
The SGS-5220 series offers comprehensive layer2 to layer4 access control list (ACL) for enforcing security to the edge. It can be used to restrict to network access by denying packets based on source and destination IP address, TCP/UDP port number or defined typical network applications. Its protection mechanism also comprises 802.1x Port-based and MAC-based user and device authentication. With the private VLAN function, communication between edge ports can be prevented to ensure user privacy.
Enhanced Security and Traffic Control
The SGS-5220 series also provides DHCP Snooping, IP Source Guard and Dynamic ARP Inspection functions to prevent IP snooping from attack and discard ARP packets with invalid MAC address. The network administrator can now construct highly secured corporate networks with considerably less time and effort than before.
User-friendly Secure Management
For efficient management, the SGS-5220 series managed switch series is equipped with console, web and SNMP management interfaces. With the built-in web-based management interface, the SGS-5220 series offers an easy-to-use, platform independent management and configuration facility. The SGS-5220 series supports SNMP and it can be managed via any management software based on standard of SNMP v1 and v2 protocol. For reducing product learning time, the SGS-5220 series offers Cisco-like command via Telnet or console port and customer doesn’t need to learn new command from these switches. Moreover, the SGS-5220 series offers remote secure management by supporting SSH, SSL and SNMPv3 connection which can encrypt the packet content at each session.
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Flexible and Extendable Solution
The 4 mini-GBIC SFP slots built in the SGS-5220 switch series support dual speed as it features 100BASE-FX and
1000BASE-SX/LX SFP (Small Form-factor Pluggable) fiber-optic modules. Now the administrator can flexibly choose the suitable SFP transceiver according to not only the transmission distance, but also the transmission speed required. The distance can be extended from 550 meters to 2km (multi-mode fiber) and up to above 10/20/30/40/50/70/120 kilometers
(single-mode fiber or WDM fiber). They are well suited for applications within the enterprise data centers and distributions.
Intelligent SFP Diagnosis Mechanism
The SGS-5220 switch series supports SFP-DDM (Digital Diagnostic Monitor) function that greatly helps network administrator to easily monitor real-time parameters of the SFP and SFP+ transceivers, such as optical output power, optical input power, temperature, laser bias current, and transceiver supply voltage.
Centralized Power Management for Gigabit Ethernet PoE Networking
To fulfill the needs of higher power required PoE network applications with Gigabit speed transmission, the SGS-5220-24P2X features high-performance Gigabit IEEE 802.3af PoE (up to 15.4 watts) and IEEE 802.3at PoE+ (up to 30 watts) on all ports. It perfectly meets the power requirements of PoE VoIP phone and all kinds of PoE IP cameras such as IR, PTZ, speed dome cameras or even box type IP cameras with built-in fan and heater for high power consumption.
The SGS-5220-24P2X’s PoE capabilities also help to reduce deployment costs for network devices as a result of freeing from restrictions of power outlet locations. Power and data switching are integrated into one unit, delivered over a single cable and managed centrally. It thus eliminates cost for additional AC wiring and reduces installation time.
Built-in Unique PoE Functions for Surveillance Management
As a managed PoE Switch for surveillance network, the SGS-5220-24P2X features intelligent PoE Management functions:
Scheduled Power Recycling
SMTP/SNMP Trap Event Alert
PoE Schedule
Scheduled Power Recycling
The SGS-5220-24P2X allows each of the connected PD (Powered Device) to reboot in a specific time each week. Therefore, it will reduce the chance of PD (Powered Device) crash resulting from buffer overflow.
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SMTP/SNMP Trap Event alert
Though most NVR or camera management softwares offer SMTP email alert function, the SGS-5220-24P2X further provides event alert function to help to diagnose the abnormal device owing to whether or not there is a break of the network connection, loss of PoE power or the rebooting response by PD Alive Check process.
PoE Schedule for Energy Saving
Besides being used for IP surveillance, theSGS-5220-24P2X is certainly applicable to construct any PoE network including VoIP and wireless LAN. Under the trend of energy saving worldwide and contributing to the environmental protection on the Earth, the SGS-5220-24P2X can effectively control the power supply besides its capability of giving high watts power. The “PoE schedule” function helps you to enable or disable PoE power feeding for each PoE port during specified time intervals and it is a powerful function to help SMBs or enterprises save power and money.
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1.3 How to Use This Manual
This User’s Manual is structured as follows:
Section 2
, INSTALLATION
The section explains the functions of the Managed Switch and how to physically install the Managed Switch.
Section 3
, SWITCH MANAGEMENT
The section contains the information about the software function of the Managed Switch.
Section 4
, WEB CONFIGURATION
The section explains how to manage the Managed Switch by Web interface.
Section 5,
SWITCH OPERATION
The chapter explains how to do the switch operation of the Managed Switch.
Section 6
, POWER over ETHERNET OVERVIEW
The chapter introduces the IEEE 802.3af / 802.3at PoE standard and PoE provision of the Managed Switch.
Section 7
, TROUBLESHOOTING
The chapter explains how to do troubleshooting of the Managed Switch.
Appendix A
The section contains cable information of the Managed Switch.
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1.4 Product Features
Physical Port
24-Port 10/100/1000BASE-T RJ45 copper (SGS-5220-24T2X)
24-Port 10/100/1000BASE-T RJ45 copper with IEEE 802.3at / 802.3af Power over Ethernet Injector function
(SGS-5220-24P2X)
24-Port 100/1000BASE-X SFP (SGS-5220-24S2XR)
4 100/1000BASE-X mini-GBIC/SFP slots, shared with Port-21 to Port-24 compatible with 100BASE-FX
SFP(SGS-5220-24T2X/SGS-5220-24P2X)
8 100/1000BASE-X mini-GBIC/SFP slots, shared with Port-1 to Port-8 compatible with 100BASE-FX
SFP(SGS-5220-24S2XR)
2 10GBASE-SR/LR SFP+ slots, compatible with 1000BASE-SX/LX/BX SFP
2 10GBASE-SR/LR SFP+ stackable slots
RJ45 console interface for basic management and setup
Stacking Features
■ Physical stacking up to 16 units, 384 Gigabit ports, 32 10 Gigabit ports
■ Single IP address stack management
■ Stacking architecture supports Chain and Ring mode
■ Plug and Play connectivity
■ Mirror across stack
■ Link Aggregation groups spanning multiple switches in a stack
■ Physical MAC address learning with MAC table synchronization across stack
Layer 2 Features
■ Prevents packet loss with back pressure (half-duplex) and IEEE 802.3x pause frame flow control (full-duplex)
■ High performance of Store-and-Forward architecture and runt/CRC filtering eliminates erroneous packets to optimize the network bandwidth
■ Storm Control support
− Broadcast, Multicast and Unknown unicast
■ Supports VLAN
− IEEE 802.1Q tagged VLAN
− Up to 255 VLANs groups, out of 4094 VLAN IDs
− Supports provider bridging (VLAN Q-in-Q, IEEE 802.1ad)
− Private VLAN Edge (PVE)
− Protocol-based VLAN
− MAC-based VLAN
− Voice VLAN
■ Supports Spanning Tree Protocol
− IEEE 802.1D Spanning Tree Protocol (STP)
− IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
− IEEE 802.1s Multiple Spanning Tree Protocol (MSTP), spanning tree by VLAN
− BPDU Guard
■ Supports Link Aggregation
− 802.3ad Link Aggregation Control Protocol (LACP)
− Cisco ether-channel (static trunk)
− Maximum 10 trunk groups, up to 16 ports per trunk group
− Up to 40Gbps bandwidth (full duplex mode)
■ Provides port mirror (many-to-1)
■ Port mirroring to monitor the incoming or outgoing traffic on a particular port
■ Loop protection to avoid broadcast loops
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Layer 3 IP Routing Features
Supports maximum 128 static routes and route summarization
Quality of Service
■ Ingress Shaper and Egress Rate Limit per port bandwidth control
■ 8 priority queues on all switch ports
■ Traffic classification
- IEEE 802.1p CoS
- TOS, DSCP, IP precedence of IPv4 and IPv6 packets
- IP TCP/UDP port number
- Typical network application
■ Strict priority and Weighted Round Robin (WRR) CoS policies
■ Supports QoS and in and out of bandwidth control on each port
■ Traffic-policing policies on the switch port
■ DSCP remarking
Multicast
Supports IGMP Snooping v1, v2 and v3
Supports MLD Snooping v1 and v2
Querier mode support
IGMP Snooping port filtering
MLD Snooping port filtering
Multicast VLAN registration (MVR) support
Security
Authentication
- IEEE 802.1x Port-based and MAC-based network access authentication
- Built-in RADIUS client to co-operate with the RADIUS servers
- TACACS+ login users access authentication
- RADIUS and TACACS+ users access authentication
Access Control List
- IP-based Access Control List (ACL)
- MAC-based Access Control List
Source MAC/IP address binding
DHCP Snooping to filter distrusted DHCP messages
Dynamic ARP Inspection discards ARP packets with invalid MAC address to IP address binding
IP Source Guard prevents IP spoofing attacks
Auto DoS rule to defend DoS attack
IP address access management to prevent unauthorized intruder
Management
IPv4 and IPv6 dual stack management
Switch Management Interfaces
- Console and Telnet Command Line Interface
- Web switch management
- SNMP v1, v2c, and v3 switch management
- SSH and SSL secure access
IPv6 IP Address, NTP and DNS management
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Built-in Trivial File Transfer Protocol (TFTP) client
BOOTP and DHCP for IP address assignment
System Maintenance
- Firmware upload and download via HTTP or TFTP
- Reset button for system reboot or reset to factory default
- Dual Images
DHCP Relay
DHCP Option82
User Privilege levels control
NTP (Network Time Protocol)
Link Layer Discovery Protocol (LLDP) and LLDP-MED
Network Diagnostic
- ICMPv6 and ICMPv4 Remote Ping
- Cable Diagnostic technology provides the mechanism to detect and report potential cabling issues
SMTP/Syslog remote alarm
Four RMON groups (history, statistics, alarms and events)
SNMP trap for interface Link Up and Link Down notification
System Log
PLANET Smart Discovery Utility for deployment management
Power over Ethernet
(SGS-5220-24P2X only)
■ Complies with IEEE 802.3at High Power over Ethernet End-span PSE
■ Complies with IEEE 802.3af Power over Ethernet End-span PSE
■ Up to 24 ports of IEEE 802.3af / 802.3at devices powered
■ Supports PoE Power up to 30.8 watts for each PoE port
■ Auto detects powered device (PD)
■ Circuit protection prevents power interference between ports
■ Remote power feeding up to 100 meters
■ PoE Management
− Total PoE power budget control
− Per port PoE function enable/disable
− PoE Port Power feeding priority
− Per PoE port power limitation
− PD classification detection
− PD alive-check
− PoE schedule
− PD power recycling schedule
Redundant Power System
(SGS-5220-24S2XR only)
Redundant 100~240V AC and 36-60V DC dual power
Active-active redundant power failure protection
Backup of catastrophic power failure on one supply
Fault tolerance and resilience
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1.5 Product Specifications
SGS-5220-24T2X / SGS-5220-24S2XR / SGS-5220-24P2X
Model
Hardware Specifications
SGS-5220-24T2X SGS-5220-24S2XR SGS-5220-24P2X
Copper Ports
Copper/SFP Combo Interfaces
4 10/100/1000Mbps TP and
SFP shared combo interfaces, SFP (Mini-GBIC)
Compatible with supports 100/1000Mbps interfaces
100BASE-FX SFP
Dual mode DDM, shared
24 100/1000BASE-X SFP transceiver with Port-21 to Port-24
10Gbps Fiber Uplink Ports
2 1/10GBASE-SR/LR SFP+ slots
10Gbps Fiber Stackable Ports
2 10GBASE-SR/LR SFP+ slots
Console
1 x RJ45 serial port (115200, 8, N, 1)
Switch Architecture
Switch Fabric
24 10/ 100/1000BASE-T
8 10/ 100/1000BASE-T
RJ-45 auto-MDI/MDI-X
RJ45 Auto-MDI/MDI-X ports ports, shared with Port-1 to RJ45 Auto-MDI/MDI-X ports
Port-8
24 10/ 100/1000BASE-T
4 10/100/1000Mbps TP and
SFP shared combo interfaces, SFP (Mini-GBIC) supports 100/1000Mbps
Dual mode DDM, shared with Port-21 to Port-24
Store-and-Forward
128Gbps / non-blocking
Throughput
Address Table
Shared Data Buffer
Flow Control
Jumbo Frame
Reset Button
Power Requirement s
95.2Mpps@64Bytes
16K entries, automatic source address learning and ageing
4 megabits
IEEE 802.3x pause frame for full-duplex
Back pressure for half-duplex
9K bytes
< 5 sec: System reboot
> 5 sec: Factory Default
100~240V AC, 50/60Hz
100~240V AC, 50/60Hz, 1A max.
36~60V DC, 2A max.
100~240V AC, 50/60Hz
Power Consumption (Full
Loading)
43 watts 59 watts/601 BTU max. 502 watts
ESD Protection
Dimensions (W x D x H)
Weight
6KV DC
440 x 200 x 44.5mm, 1U high
2850g
Contact discharge of 4KV
DC
Air discharge of 8KV DC
440 x 200 x 44.5 mm, 1U height
2990g
440 x 300 x 44.5 mm, 1U height
4887g
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Stacking Functions
Stacking Ports
Stacking Numbers
Stacking Bandwidth
Stack ID Display
2 SFP+ slots
16
40Gbps full duplex
7-Segment LED display (1~9, A~F, 0)
Ring/Chain/Back-to-Back
Stack Topology
Power over Ethernet
PoE Standard
PoE Power Supply Type
PoE Power Output
Power Pin Assignment
PoE Power Budget
-
-
-
-
-
-
-
-
-
-
IEEE 802.3at PoE / PSE
End-span
Per Port 56V DC, Max. 30.8 watts
1/2(+), 3/6(-)
440 watts (max.) @ 25 degrees C
380 watts (max.) @ 50 degrees C
24 units
24 units
14 units
PoE Ability PD @ 7 watts
PoE Ability PD @ 15.4 watts
PoE Ability PD @ 30.8 watts
Layer2 Management Function
-
-
-
-
-
-
Basic Management Interfaces
Console, Telnet, Web Browser, SNMP v1, v2c
Secure Management Interfaces
SSH, SSL, SNMP v3
Port Configuration
Port Status
Port Mirroring
VLAN
Link Aggregation
QoS
Port disable / enable
Auto-negotiation 10/100/1000Mbps full and half duplex mode selection
Flow Control disable / enable
Display each port’s speed duplex mode, link status, flow control status, auto negotiation status, trunk status
TX / RX / Both
Many-to-1 monitor
802.1Q tagged based VLAN, up to 255 VLAN groups
Q-in-Q tunneling
Private VLAN Edge (PVE)
MAC-based VLAN
Protocol-based VLAN
Voice VLAN
MVR (Multicast VLAN Registration)
Up to 255 VLAN groups, out of 4094 VLAN IDs
IEEE 802.3ad LACP (static trunk)
Supports 10 trunk groups with16 ports per trunk
Traffic classification based, Strict priority and WRR
8-Level priority for switching
- Port Number
21
IGMP Snooping
MLD Snooping
Access Control List
Bandwidth Control
SNMP MIBs
Layer3 Function
IP Interfaces
Routing Table
Routing Protocols
Standards Conformance
Regulatory Compliance
Standards Compliance
Environments
Operating
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User’s Manual of SGS-5220 Series
- 802.1p priority
- 802.1Q VLAN tag
- DSCP/TOS field in IP Packet
IGMP Snooping v1/v2/v3, up to 255 multicast Groups
IGMP Querier mode support
MLD Snooping v1/v2, up to 255 multicast Groups
MLD Querier mode support
IP-based ACL/MAC-based ACL
Up to 256 entries
Per port bandwidth control
Ingress: 100Kbps~1000Mbps
Egress: 100Kbps~1000Mbps
RFC 1213 MIB-II
IF-MIB
RFC 1493 Bridge MIB
RFC 1643 Ethernet MIB
RFC 2863 Interface MIB
RFC 2665 Ether-Like MIB
RFC 2737 Entity MIB
RFC 2819 RMON MIB (Group 1, 2, 3 and 9)
RFC 2618 RADIUS Client MIB
RFC 3411 SNMP-Frameworks-MIB
IEEE 802.1X PAE
LLDP
MAU-MIB
PoE-Ethernet MIB
Max. 128 VLAN interfaces
Max. 32 routing entries
IPv4 hardware static routing
IPv6 hardware static routing
FCC Part 15 Class A, CE
IEEE 802.3 10BASE-T
IEEE 802.3u
100BASE-TX/100BASE-FX
IEEE 802.3z 1000BASE-SX/LX
IEEE 802.3ab 1000BASE-T
IEEE 802.3x flow control and back pressure
IEEE 802.3ad port trunk with LACP
IEEE 802.1D Spanning Tree protocol
IEEE 802.1w Rapid Spanning Tree protocol
IEEE 802.1s Multiple Spanning
Tree protocol
IEEE 802.1p Class of service
IEEE 802.1Q VLAN tagging
IEEE 802.1x Port Authentication Network
Control
IEEE 802.1ab LLDP
IEEE 802.3af Power over Ethernet
IEEE 802.3at Power over Ethernet PLUS
RFC 768 UDP
RFC 793 TFTP
RFC 791 IP
RFC 792 ICMP
RFC 2068 HTTP
RFC 1112 IGMP version 1
RFC 2236 IGMP version 2
RFC 3376 IGMP version 3
RFC 2710 MLD version 1
FRC 3810 MLD version 2
Temperature: 0 ~ 50 degrees C
Relative Humidity: 5 ~ 95% (non-condensing)
Temperature: -10 ~ 70 degrees C
Relative Humidity: 5 ~ 95% (non-condensing)
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2. INSTALLATION
This section describes the hardware features and installation of the Managed Switch on the desktop or rack mount. For easier management and control of the Managed Switch, familiarize yourself with its display indicators, and ports. Front panel illustrations in this chapter display the unit LED indicators. Before connecting any network device to the Managed Switch, please read this chapter completely.
2.1 Hardware Description
2.1.1 Switch Front Panel
The front panel provides a simple interface monitoring the Managed Switch. Figure 2-1-1A~2-1-1C shows the front panel of the
Managed Switch.
SGS-5220-24T2X Front Panel
SGS-5220-24P2X Front Panel
Figure 2-1-1A: Front Panel of SGS-5220-24T2X
SGS-5220-24S2XR Front Panel
Figure 2-1-1B: Front Panel of SGS-5220-24P2X
Figure 2-1-1C: Front Panel of SGS-5220-24S2XR
■ Gigabit TP Interface
10/100/1000BASE-T copper, RJ45 twisted-pair: Up to 100 meters.
■ SFP Slot
100/1000BASE-X mini-GBIC slot, SFP (Small-form Factor Pluggable) transceiver module: From 550 meters to 2km
(multi-mode fiber), up to above 10/20/30/40/50/70/120 kilometers (single-mode fiber).
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■ 10 Gigabit SFP+ Slot
10GBASE-SR/LR mini-GBIC slot, SFP+ Transceiver Module supports from 300 meters (multi-mode fiber) to up to 10 kilometers (single-mode fiber)
■ 10 Gigabit Stacked SFP+ Slot
10GBASE-SR/LR mini-GBIC slot, SFP+ Transceiver Module supports from 300 meters (multi-mode fiber) to up to 10 kilometers (single-mode fiber)
■ Console Port
The console port is an RJ45 port connector. It is an interface for connecting a terminal directly. Through the console port, it provides rich diagnostic information including IP address setting, factory reset, port management, link status and system setting. Users can use the attached DB9 to RJ45 console cable in the package and connect to the console port on the device. After the connection, users can run any terminal emulation program (Hyper Terminal, ProComm Plus, Telix,
Winterm and so on) to enter the startup screen of the device.
■ Reset Button
At the right of the front panel, the reset button is designed for rebooting the Managed Switch without turning off and on the power. The following is the summary table of reset button functions :
Reset Button Pressed and Released Function
< 5 sec: System Reboot Reboot the Managed Switch.
> 5 sec: Factory Default
Reset the Managed Switch to Factory Default configuration.
The Managed Switch will then reboot and load the default settings as shown below:
。
。
。
。
。
Default Username: admin
Default Password: admin
Default IP address: 192.168.0.100
Subnet mask: 255.255.255.0
Default Gateway: 192.168.0.254
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User’s Manual of SGS-5220 Series
2.1.2 LED Indications
The front panel LEDs indicate instant status of power and system status, fan status, port links/PoE-in-use and data activity; they help monitor and troubleshoot when needed. Figure 2-1-2 and Figure 2-1-6 show the LED indications of the Managed Switch.
SGS-5220-24T2X LED Indication
Figure 2-1-2: Front Panel LEDs of SGS-5220-24T2X
Figure 2-1-3: Rear Panel LEDs of SGS-5220-24T2X
SGS-5220-24T2X LED Indication Table
LED definition
System/Alert
LED Color Function
PWR
Master
FAN1
Green
Lights to indicate that the Switch is powered on.
Blinks to indicate the System is running under booting procedure.
Green
Lights to indicate that the Switch is the Master of the stack group.
Green
Lights to indicate fan1 has failed.
FAN2 Green
Lights to indicate fan2 has failed.
Per 10/100/1000BASE-T interface (Port-1 to Port-20)
LED Color
1000
LNK/ACT
10/100
LNK/ACT
Function
Green
Lights to indicate the port is running in 1000Mbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Orange
Lights to indicate the port is running in 10/100Mbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
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User’s Manual of SGS-5220 Series
Per TP/SFP combo interface (Port-21 to Port-24)
LED Color Function
1000
LNK/ACT
Green
100
LNK/ACT
Orange
Lights to indicate the port is running in 1000Mbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Lights to indicate the port is running in 10/100Mbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Per 10G uplink SFP+ interface (Port-25 to Port-26)
LED Color Function
10G
LNK/ACT
1G
LNK/ACT
Green
Orange
Lights to indicate the port is running in 10Gbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Lights to indicate the port is running in 1Gbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Per 10G stackable SFP+ interface (Port-27 to Port-28)
LED Color Function
Lights to indicate the link through that SFP+ stacking port is successfully established with
Stack
ACK
Green
Orange
speed 10Gbps.
Off to indicate that the port is link down.
Lights to indicate that the switch is not sending or receiving data over that port.
Blinks to indicate that the switch is actively sending or receiving data over that port.
SGS-5220-24P2X LED Indication
Figure 2-1-4: Front Panel LEDs of SGS-5220-24P2X
SGS-5220-24P2X LED Indication Table
LED definition
System / Alert / Stack
LED Color Function
PWR
Master
Green
Lights to indicate that the Switch is powered on.
Blinks to indicate the System is running under booting procedure.
Green
Lights to indicate that the Switch is the Master of the stack group.
FAN1
Green
Lights to indicate fan1 has failed.
FAN2
Green
Lights to indicate fan2 has failed.
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User’s Manual of SGS-5220 Series
PWR1 Green
Lights to indicate power supply 1 has failed.
PWR2 Green
Lights to indicate power supply 2 has failed.
STX1
STX2
Green
Green
Lights to indicate the link through that SFP+ stacking port is successfully established with speed 10Gbps.
Off to indicate that the port is link down.
Lights to indicate the link through that SFP+ stacking port is successfully established with speed 10Gbps.
Off to indicate that the port is link down.
Per 10/100/1000BASE-T interfaces (Port-1 to Port-24)
LED Color
LNK/ACT
PoE
Green
Orange
Function
Lights to indicate the link through that port is successfully established at
10/100/1000Mbps.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Lights to Indicate the port is providing 56V DC in-line power.
Blinks to indicate the connected device is not a PoE Powered Device (PD).
Per 10G uplink SFP+ interface (Port-25 to Port-26)
LED Color Function
10G
LNK/ACT
1G
LNK/ACT
Green
Orange
Lights to indicate the port is running in 10Gbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Lights to indicate the port is running in 1Gbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
SGS-5220-24S2XR LED Indication
Figure 2-1-5: Front Panel LEDs of SGS-5220-24S2XR
Figure 2-1-6: Rear Panel LEDs of SGS-5220-24S2XR
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User’s Manual of SGS-5220 Series
SGS-5220-24S2XR LED Indication Table
LED definition
System/Stack
LED Color
PWR Green
Function
Lights to indicate that the Switch is powered on.
Blinks to indicate the System is running under booting procedure.
Master
STX1
STX2
Green
Lights to indicate that the Switch is the Master of the stack group.
Green
Green
Lights to indicate the link through that SFP+ stacking port is successfully established with speed 10Gbps.
Off to indicate that the port is link down.
Lights to indicate the link through that SFP+ stacking port is successfully established with speed 10Gbps.
Off to indicate that the port is link down.
Per Gigabit Ethernet interfaces (Port-1 to Port-24)
LED Color
1G
LNK/ACT
10/100
LNK/ACT
Green
Orange
Function
Lights to indicate the port is running in 1Gbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Lights to indicate the port is running in 10/100Mbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Per 10G uplink SFP+ interface (Port-25 to Port-26)
LED Color
10G
LNK/ACT
1G
LNK/ACT
Function
Green
Orange
Lights to indicate the port is running in 10Gbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Lights to indicate the port is running in 1Gbps speed and successfully established.
Blinks to indicate that the switch is actively sending or receiving data over that port.
Per 10G stackable SFP+ interface (Port-27 to Port-28)
LED
Stack
ACK
Color Function
Lights to indicate the link through that SFP port is successfully established with speed
Green
10Gbps
Off: indicate that the port is link down
Orange
Lights to indicate that the switch is not sending or receiving data over that port.
Blink: indicate that the switch is actively sending or receiving data over that port.
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User’s Manual of SGS-5220 Series
2.1.3 Switch Rear Panel
The rear panel of the Managed Switch indicates an AC inlet power socket, which accepts input power from 100 to 240V AC,
50-60Hz. Figures 2-1-4A, 2-1-4B and 2-1-4C show the rear panel of the Managed Switch.
SGS-5220-24T2X Rear Panel
SGS-5220-24P2X Rear Panel
Figure 2-1-4A: Rear Panel of SGS-5220-24T2X
SGS-5220-24S2XR Rear Panel
Figure 2-1-4B: Rear Panel of SGS-5220-24P2X
Figure 2-1-4C: Rear Panel of SGS-5220-24S2XR
■ 10 Gigabit Stacked SFP+ slot
10GBASE-SR/LR mini-GBIC slot, SFP+ Transceiver Module supports from 300 meters (multi-mode fiber) to up to 10 kilometers (single-mode fiber)
■ AC Power Receptacle
For compatibility with electrical service in most areas of the world, the Managed Switch’s power supply automatically adjusts line power in the range of 100-240V AC and 50/60 Hz.
Plug the female end of the power cord firmly into the receptalbe on the rear panel of the Managed Switch and the other end into an electrical service outlet and the power will be ready.
The device is a power-required device, which means it will not work till it is powered. If your networks should be active all the time, please consider using UPS (Uninterrupted Power Supply) for your device.
Power Notice:
It will prevent you from network data loss or network downtime. In some areas, installing a surge suppression device may also help to protect your Managed Switch from being damaged by unregulated surge or current to the Switch or the power adapter.
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User’s Manual of SGS-5220 Series
■ DC Power Connector
The rear panel of the SGS-5220-24S2XR contains a power switch and a DC power connector, which accepts DC power input voltage from 36V to 60V DC. Connect the power cable to the Managed Switch at the input terminal block. The size of the two screws in the terminal block is M3.5.
Figure 2-1-7 Rear Panel of SGS-5220-24S2XR
Before connecting the DC power cable to the input terminal block of the SGS-5220-24S2XR, make sure
Warning: that the power switch is in the “OFF” position and the DC power is OFF.
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User’s Manual of SGS-5220 Series
2.2 Installing the Managed Switch
This section describes how to install your Managed Switch and make connections to the Managed Switch. Please read the following topics and perform the procedures in the order being presented. To install your Managed Switch on a desktop or shelf, simply complete the following steps.
2.2.1 Desktop Installation
To install the Managed Switch on desktop or shelf, please follow these steps:
Step 1:
Attach the rubber feet to the recessed areas on the bottom of the Managed Switch.
Step 2: Place the Managed Switch on the desktop or the shelf near an AC power source, as shown in Figure 2-2-1 .
Figure 2-2-1: Place the Managed Switch on the Desktop
Step 3:
Keep enough ventilation space between the Managed Switch and the surrounding objects.
When choosing a location, please keep in mind the environmental restrictions discussed in Chapter 1,
Section 4 under specifications.
Step 4: Connect the Managed Switch to network devices.
Connect one end of a standard network cable to the 10/100/1000 RJ45 ports on the front of the Managed Switch .
Connect the other end of the cable to the network devices such as printer server, workstation or router.
Connection to the Managed Switch requires UTP Category 5e network cabling with RJ45 tips. For more information, please see the Cabling Specification in Appendix A.
Step 5: Supply power to the Managed Switch.
Connect one end of the power cable to the Managed Switch.
Connect the power plug of the power cable to a standard wall outlet.
When the Managed Switch receives power, the Power LED should remain solid Green.
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User’s Manual of SGS-5220 Series
2.2.2 Rack Mounting
To install the Managed Switch in a 19-inch standard rack, please follow the instructions described below.
Step 1: Place the Managed Switch on a hard flat surface, with the front panel positioned towards the front side.
Step 2:
Attach the rack-mount bracket to each side of the Managed Switch with supplied screws attached to the package.
Figure 2-2-2 shows how to attach brackets to one side of the Managed Switch.
Figure 2-2-2: Attach Brackets to the Managed Switch.
You must use the screws supplied with the mounting brackets. Damage caused to the parts by using incorrect screws would invalidate the warranty.
Step 3:
Secure the brackets tightly.
Step 4: Follow the same steps to attach the second bracket to the opposite side.
Step 5: After the brackets are attached to the Managed Switch, use suitable screws to securely attach the brackets to the rack , as shown in Figure 2-2-3 .
Figure 2-2-3: Mounting Managed Switch in a Rack
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User’s Manual of SGS-5220 Series
Step 6:
Proceed with Steps 4 and 5 of session 2.2.1 Desktop Installation to connect the network cabling and supply power to the
Managed Switch.
2.2.3 Installing the SFP/SFP+ Transceiver
The sections describe how to insert an SFP/SFP+ transceiver into an SFP/SFP+ slot. The SFP/SFP+ transceivers are hot-pluggable and hot-swappable. You can plug in and out the transceiver to/from any SFP/SFP+ port without having to power down the Managed Switch, as the Figure 2-2-4 shows..
Figure 2-2-4: Plug in the SFP/SFP+ Transceiver
Approved PLANET SFP/SFP+ Transceivers
PLANET Managed Switch supports both single mode and multi-mode SFP/SFP+ transceivers. The following list of approved PLANET SFP/SFP+ transceivers is correct at the time of publication:
Fast Ethernet Transceiver (100BASE-X SFP)
Model
Speed (Mbps) Connector Interface Fiber Mode Distance Wavelength (nm) Operating Temp.
MFB-FX
MFB-F20
MFB-F40
MFB-F60
MFB-F120
MFB-TFX
MFB-TF20
100
100
100
100
100
100
100
LC
LC
LC
LC
LC
LC
LC
Multi Mode
Single Mode
Single Mode
Single Mode
Single Mode
Multi Mode
Single Mode
2km
20km
40km
60km
120km
2km
20km
1310nm
1310nm
1310nm
1310nm
1550nm
1310nm
1550nm
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
-40 ~ 75 degrees C
-40 ~ 75 degrees C
Fast Ethernet Transceiver (100BASE-BX, Single Fiber Bi-directional SFP)
Model
Speed (Mbps) Connector Interface Fiber Mode Distance Wavelength (TX/RX) Operating Temp.
MFB-FA20 100 WDM(LC) Single Mode 20km 1310nm/1550nm 0 ~ 60 degrees C
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User’s Manual of SGS-5220 Series
MFB-FB20
MFB-TFA20
MFB-TFB20
MFB-TFA40
MFB-TFB40
100
100
100
100
100
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
Single Mode 20km
Single Mode 20km
Single Mode 20km
Single Mode 40km
Single Mode 40km
1550nm/1310nm 0 ~ 60 degrees C
1310nm/1550nm -40 ~ 75 degrees C
1550nm/1310nm -40 ~ 75 degrees C
1310nm/1550nm -40 ~ 75 degrees C
1550nm/1310nm -40 ~ 75 degrees C
Gigabit Ethernet Transceiver (1000BASE-X SFP)
Model
Speed (Mbps) Connector Interface Fiber Mode Distance Wavelength (nm) Operating Temp.
MGB-GT
MGB-SX
MGB-SX2
MGB-LX
MGB-L30
MGB-L50
MGB-L70
MGB-L120
MGB-TSX
MGB-TLX
MGB-TL30
MGB-TL70
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
Copper
LC
LC
LC
LC
LC
LC
LC
LC
LC
LC
LC
--
Multi Mode
Multi Mode
Single Mode
Single Mode 30km
Single Mode 50km
Single Mode 70km
Single Mode 120km
Multi Mode
100m
550m
2km
10km
550m
Single Mode 10km
Single Mode 30km
Single Mode 70km
--
850nm
1310nm
1310nm
1310nm
1550nm
1550nm
1550nm
850nm
1310nm
1310nm
1550nm
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
-40 ~ 75 degrees C
-40 ~ 75 degrees C
-40 ~ 75 degrees C
-40 ~ 75 degrees C
Gigabit Ethernet Transceiver (1000BASE-BX, Single Fiber Bi-directional SFP)
Model
Speed (Mbps) Connector Interface Fiber Mode Distance Wavelength (TX/RX) Operating Temp.
MGB-LA10
MGB-LB10
MGB-LA20
MGB-LB20
MGB-LA40
MGB-LB40
MGB-LA60
MGB-LB60
MGB-TLA10
MGB-TLB10
MGB-TLA20
MGB-TLB20
MGB-TLA40
MGB-TLB40
MGB-TLA60
MGB-TLB60
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
WDM(LC)
Single Mode 10km
Single Mode 10km
Single Mode 20km
Single Mode 20km
Single Mode 40km
Single Mode 40km
Single Mode 60km
Single Mode 60km
Single Mode 10km
Single Mode 10km
Single Mode 20km
Single Mode 20km
Single Mode 40km
Single Mode 40km
Single Mode 60km
Single Mode 60km
1310nm/1550nm
1550nm/1310nm
0 ~ 60 degrees C
0 ~ 60 degrees C
1310nm/1550nm
1550nm/1310nm
1310nm/1550nm
1550nm/1310nm
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
1310nm/1550nm
1550nm/1310nm
0 ~ 60 degrees C
0 ~ 60 degrees C
1310nm/1550nm -40 ~ 75 degrees C
1550nm/1310nm -40 ~ 75 degrees C
1310nm/1550nm -40 ~ 75 degrees C
1550nm/1310nm -40 ~ 75 degrees C
1310nm/1550nm -40 ~ 75 degrees C
1550nm/1310nm -40 ~ 75 degrees C
1310nm/1550nm -40 ~ 75 degrees C
1550nm/1310nm -40 ~ 75 degrees C
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User’s Manual of SGS-5220 Series
10Gbps SFP+ (10G Ethernet/10GBASE)
Model
MTB-SR
Speed (Mbps)
10G
Connector
Interface
LC
MTB-LR 10G LC
Fiber Mode Distance Wavelength (nm) Operating Temp.
Multi Mode Up to 300m 850nm 0 ~ 60 degrees C
Single Mode 10km 1310nm 0 ~ 60 degrees C
10Gbps SFP+ (10GBASE-BX, Single Fiber Bi-directional SFP)
Model
Speed (Mbps) Connector
MTB-LA20 10G
Fiber Mode Distance
WDM(LC) Single Mode 20km
Wavelength (TX)
1270nm
Wavelength (RX)
1330nm
Operating Temp.
0 ~ 60 degrees C
MTB-LB20
10G WDM(LC) Single Mode 20km 1330nm 1270nm 0 ~ 60 degrees C
MTB-LA40
MTB-LB40
MTB-LA60
MTB-LB60
10G
10G
10G
10G
WDM(LC) Single Mode 40km
WDM(LC) Single Mode 40km
WDM(LC) Single Mode 60km
WDM(LC) Single Mode 60km
1270nm
1330nm
1270nm
1330nm
1330nm
1270nm
1330nm
1270nm
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
0 ~ 60 degrees C
1. It is recommended to use PLANET SFP on the Managed Switch. If you insert an SFP transceiver that is not supported, the Managed Switch will not recognize it.
2. Port 25 to Port 26 are a shared SFP+ slot that supports the 10 Gigabit SFP+ transceiver and
Gigabit SFP transceiver.
1. Before we connect the switch to the other network device, we have to make sure both sides of the SFP transceivers are with the same media type, for example: 1000BASE-SX to 1000BASE-SX, 1000BASE-LX to 1000BASE-LX.
2. Check whether the fiber-optic cable type matches with the SFP transceiver requirement.
To connect to 1000BASE-SX SFP transceiver, please use the multi-mode fiber cable with one side being the male duplex LC connector type.
To connect to 1000BASE-LX SFP transceiver, please use the single-mode fiber cable with one side being the male duplex LC connector type.
Connect the Fiber Cable
1. Insert the duplex LC connector into the SFP/SFP+ transceiver.
2. Connect the other end of the cable to a device with SFP/SFP+ transceiver installed.
3. Check the LNK/ACT LED of the SFP/SFP+ slot on the front of the Managed Switch. Ensure that the SFP/SFP+ transceiver is operating correctly.
4. Check the Link mode of the SFP/SFP+ port if the link fails. To function with some fiber-NICs or Media Converters, user has to set the port Link mode to “10GForce”, “1000 Force” or “100 Force”.
Remove the Transceiver Module
1. Make sure there is no network activity anymore.
2. Remove the Fiber-Optic Cable gently.
35
3. Lift up the lever of the MGB module and turn it to a horizontal position.
4. Pull out the module gently through the lever.
User’s Manual of SGS-5220 Series
Figure 2-2-5: How to Pull Out the SFP/SFP+ Transceiver
Never pull out the module without lifting up the lever of the module and turning it to a horizontal position. Directly pulling out the module could damage the module and the SFP/SFP+ module slot of the Managed Switch.
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User’s Manual of SGS-5220 Series
2.3 Stack Installation
SGS-5220 Series
The SGS-5220 managed switch series provides a switch stacking function to manage up to 16 switches using a single IP address. And up to 384 Gigabit Ethernet ports and 32 high-capacity 10G SFP+ ports can be managed by a stacking group and you can add ports and functionality as needed. You can add the SGS-5220 managed switch series as needed to support more network clients, knowing that your switching fabric will scale to meet increasing traffic demands.
Two types of stack topologies are supported by the SGS-5220 managed switch series:
Chain topology (same as a disconnected ring)
Ring topology
Please find the following picture for sample connection.
Figure 2-21 Chain Stack topology
Figure 2-22 Ring Stack topology
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User’s Manual of SGS-5220 Series
2.3.1 Connecting Stacking Cable
Before attempting to connect stacking ports, verify that you have the required stack cables. The following cables are used to connect stacked switches:
• CB-DASFP-0.5M: 10G SFP+ Directly-attached Copper Cable (0.5M in length)
• CB-DASFP-2M: 10G SFP+ Directly-attached Copper Cable (2M in length)
• MTB-LR: SFP+ Port 10GBASE-LR mini-GBIC Module (single-mode/1310nm/max. 10km).
• MTB-SR: SFP+ Port 10GBASE-SR mini-GBIC Module (multi-mode/850nm/max. 300m)
• Standard 10GBASE-LR/SR mini-GBIC SFP+ Module.
There are two high-performance SFP+ stacked ports on the rear panel for proprietary management stack.
Step 1: Plug one end of the cable into the “STX1” port and the other end into the ”STX2” port of the next device.
Step 2: Repeat the step for every device in the stack cluster, and then ending with the last switch.
Figure 2-23 Stacking Connection
Step 3: If you wish to implement stack redundancy, use the long stack cable to connect the stack port marked “STX1” on the bottom switch to the port marked “STX2” on the top switch of the stack.
The stack port is for management and data packets to be transmitted between other SGS-5220 stackable switch series. The stack ports can’t be configured with Layer 2 features via management interface.
Step 4: Power up the stack switches.
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User’s Manual of SGS-5220 Series
2.3.2 Management Stacking
The stack operation of the SGS Managed Switch supports Plug and Play Stacking connection and auto stack configuration.
Step 5: Once the stack starts operation, the Stack master will be automatically selected without any configuration. The Stack master is indicated by a lit green “
Master
” LED on the front panel as Figure 2-24 shows.
Stack ID
Master LED
Figure 2-24 Stack Master with “Master” LED lit
Step 6: When an SGS Switch is added to the stack, a Switch ID is automatically assigned to the SGS Switch. The automatic
SID assignment can be modified by choosing a different Switch ID on the Stack Configuration page. This method allows Switch IDs to be assigned so that it is easier for the user to remember the ID of each switch.
Step 7: Connect the RJ45 serial cable to the console port on the front of the stack master, and then login the SGS Switch to start the switch management. Or you can use the PLANET Smart Discovery Utility to display the IP address of the stack and Web login the stack with this IP address. The default IP address of the SGS Switch is 192.168.0.100.
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User’s Manual of SGS-5220 Series
Figure 2-25 Use PLANET Smart Discovery Utility to display the IP address of stack master
1. The stack switch with the least priority ID or MAC Address number will become Master. Only
Master switch’s management interface (console, Telnet, Web and SNMP) is accessible.
It allows to build a stack of up to 16 PLANET SGS Switches. If there is the space limitation or power issue and you wish to stack all the switches in different racks, use long stack cables to connect two stacks.
2m stack cable
CB-DASFP-2M
2m stack cable
CB-DASFP-2M
Figure 2-26 Separate Stack connection
CB-DASFP-0.5M
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User’s Manual of SGS-5220 Series
3. SWITCH MANAGEMENT
This chapter explains the methods that you can use to configure management access to the Managed Switch. It describes the types of management applications and the communication and management protocols that deliver data between your management device (workstation or personal computer) and the system. It also contains information about port connection options.
This chapter covers the following topics:
Requirements
Management Access Overview
Administration Console Access
Web Management Access
SNMP Access
Standards, Protocols, and Related Reading
3.1 Requirements
Workstations running Windows 2000/XP, 2003, Vista/7/8/10, 2008, MAC OS9 or later, or Linux, UNIX , or other platforms compatible with TCP/IP protocols.
Workstation is installed with Ethernet NIC (Network Interface Card)
Serial Port connect (Terminal)
• The above PC with COM Port (DB9 / RS-232) or USB-to-RS-232 converter
Ethernet Port connect
• Network cables - Use standard network (UTP) cables with RJ45 connectors.
The above workstation is installed with Web Browser and JAVA runtime environment Plug-in
It is recommended to use Internet Explore 7.0 or above to access Managed Switch.
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User’s Manual of SGS-5220 Series
3.2 Management Access Overview
The Managed Switch gives you the flexibility to access and manage it using any or all of the following methods:
An administration console
Web browser interface
An external SNMP-based network management application
The administration console and Web browser interface support are embedded in the Managed Switch software and are available for immediate use. Each of these management methods has their own advantages. Table 3-1 compares the three management methods.
Method
Console
Advantages
• No IP address or subnet needed
• Text-based
• Telnet functionality and HyperTerminal built into Windows
95/98/NT/2000/ME/XP operating
Disadvantages
• Must be near the switch or use dial-up connection
• Not convenient for remote users
• Modem connection may prove to be unreliable or slow
Remote
Telnet
systems
• Secure
• Text-based
• Telnet functionality built into Windows
XP/2003, Vista, Windows 7 operating
• Security can be compromised (hackers need only know the IP address) systems
• Can be accessed from any location
Web Browser
• Ideal for configuring the switch remotely
• Compatible with all popular browsers
• Can be accessed from any location
• Most visually appealing
SNMP Agent
• Communicates with switch functions at the MIB level
• Based on open standards
• Security can be compromised (hackers need only know the IP address and subnet mask)
• May encounter lag times on poor connections
• Requires SNMP manager software
• Least visually appealing of all three methods
• Some settings require calculations
• Security can be compromised (hackers need only know the community name)
Table 3-1 Comparison of Management Methods
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User’s Manual of SGS-5220 Series
3.3 Administration Console
The administration console is an internal, character-oriented, and command line user interface for performing system administration such as displaying statistics or changing option settings. Using this method, you can view the administration console from a terminal, personal computer, Apple Macintosh, or workstation connected to the Managed Switch's console
(serial) port.
Figure 3-1-1: Console Management
Direct Access
Direct access to the administration console is achieved by directly connecting a terminal or a PC equipped with a terminal-emulation program (such as HyperTerminal) to the Managed Switch console (serial) port. When using this management method, a straight DB9 RS-232 cable is required to connect the switch to the PC. After making this connection, configure the terminal-emulation program to use the following parameters:
The default parameters are:
115200 bps
8 data bits
No parity
1 stop bit
Figure 3-1-2: Terminal Parameter Settings
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You can change these settings, if desired, after you log on. This management method is often preferred because you can remain connected and monitor the system during system reboots. Also, certain error messages are sent to the serial port, regardless of the interface through which the associated action was initiated. A Macintosh or PC attachment can use any terminal-emulation program for connecting to the terminal serial port. A workstation attachment under UNIX can use an emulator such as TIP.
Remote Telnet
In Windows system, you may click “Start” and then choose “Acessories”and “Command Prompt”. Please input “telnet
192.168.0.100” and press “enter’ from your keyboard. You will see the following screen appears as Figure 3-2 shows.
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3.4 Web Management
The Managed Switch offers management features that allow users to manage the Managed Switch from anywhere on the network through a standard browser such as Microsoft Internet Explorer. After you set up your IP address for the switch, you can access the Managed Switch's Web interface applications directly in your Web browser by entering the IP address of the
Managed Switch.
Figure 3-1-3: Web Management
You can then use your Web browser to list and manage the Managed Switch configuration parameters from one central location, just as if you were directly connected to the Managed Switch's console port. Web Management requires either Microsoft
Internet Explorer 8.0 or later, Safari or Mozilla Firefox 1.5 or later.
Figure 3-1-4: Web Main Screen of Managed Switch
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3.5 SNMP-based Network Management
You can use an external SNMP-based application to configure and manage the Managed Switch, such as SNMP Network
Manager, HP Openview Network Node Management (NNM) or What’s Up Gold. This management method requires the SNMP agent on the switch and the SNMP Network Management Station to use the same community string. This management method, in fact, uses two community strings: the get community string and the set community string.
If the SNMP Net-work management Station only knows the set community string, it can read and write to the MIBs. However, if it only knows the get community string, it can only read MIBs. The default getting and setting community strings for the Managed
Switch is public.
Figure 3-1-5: SNMP Management
3.6 PLANET Smart Discovery Utility
For easily listing the Managed Switch in your Ethernet environment, the Planet Smart Discovery Utility from user’s manual
CD-ROM is an ideal solution. The following installation instructions are to guide you to running the Planet Smart Discovery
Utility.
1. Deposit the Planet Smart Discovery Utility in administrator PC.
2. Run this utility as the following screen appears.
Figure 3-1-6: Planet Smart Discovery Utility Screen
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If there are two LAN cards or above in the same administrator PC, choose a different LAN card by using the “Select Adapter” tool.
3. Press the “Refresh” button for the currently connected devices in the discovery list as the screen shows below:
Figure 3-1-7: Planet Smart Discovery Utility Screen
1. This utility shows all necessary information from the devices, such as MAC Address, Device Name, firmware version, and
Device IP Subnet address. It can also assign new password, IP Subnet address and description to the devices.
2. After setup is completed, press the “Update Device”, “Update Multi” or “Update All” button to take effect. The meaning of the 3 buttons above are shown as below:
Update Device: Use the current setting on one single device.
Update Multi: Use the current setting on choose multi-devices.
Update All: Use the current setting on whole devices in the list.
The same functions mentioned above also can be found in “Option” tools bar.
3. To click the “Control Packet Force Broadcast” function, it can allow assign new setting value to the Web Smart Switch under a different IP subnet address.
4. Press the “Connect to Device” button and the Web login screen appears in Figure 3-1-4.
5. Press the “Exit” button to shut down the Planet Smart Discovery Utility.
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4. WEB CONFIGURATION
This section introduces the configuration and functions of the Web-based management from Managed Switch.
About Web-based Management
The Managed Switch offers management features that allow users to manage the Managed Switch from anywhere on the network through a standard browser such as Microsoft Internet Explorer.
The Web-based Management supports Internet Explorer 7.0. It is based on Java Applets with an aim to reduce network bandwidth consumption, enhance access speed and present an easy viewing screen.
By default, IE7.0 or later version does not allow Java Applets to open sockets. The user has to explicitly modify the browser setting to enable Java Applets to use network ports.
The Managed Switch can be configured through an Ethernet connection, making sure the manager PC must be set on the same
IP subnet address with the Managed Switch.
For example, the default IP address of the Managed Switch is 192.168.0.100, then the manager PC should be set at
192.168.0.x (where x is a number between 1 and 254, except 100), and the default subnet mask is 255.255.255.0.
If you have changed the default IP address of the Managed Switch to 192.168.1.1 with subnet mask 255.255.255.0 via console, then the manager PC should be set at 192.168.1.x (where x is a number between 2 and 254) to do the related configuration on manager PC.
Figure 4-1-1: Web Management
Logging on the Managed Switch
1. Use Internet Explorer 7.0 or above Web browser. Enter the factory-default IP address to access the Web interface. The factory-default IP Address is shown as follows:
http://192.168.0.100
2. When the following login screen appears, please enter the default username "admin" with password “admin” (or the
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username/password you have changed via console) to login the main screen of Managed Switch. The login screen in
Figure 4-1-2 appears.
Figure 4-1-2: Login Screen
Default User name: admin
Default Password: admin
After entering the username and password, the main screen appears in Figure 4-1-3 .
Figure 4-1-3: Web Main ppage
Now, you can use the Web management interface to continue the switch management or manage the Managed Switch by Web interface. The Switch Menu on the left of the web page lets you access all the commands and statistics the Managed Switch provides.
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1. It is recommended to use Internet Explore 7.0 or above to access Managed Switch.
2. The changed IP address takes effect immediately after clicking on the Save button. You need to use the new IP address to access the Web interface.
3. For security reason, please change and memorize the new password after this first setup.
4. Only accept command in lowercase letter under web interface.
4.1 Main Web page
The Managed Switch provides a Web-based browser interface for configuring and managing it. This interface allows you to access the Managed Switch using the Web browser of your choice. This chapter describes how to use the Managed Switch’s
Web browser interface to configure and manage it.
Copper Port Link Status
Main Functions Menu
SFP/SFP+ Port Link Status
(Port 25~26)
Stack Port Link Status
(Port 27~28)
Main Screen
Figure 4-1-4: Web Main page
Help Button
Panel Display
The web agent displays an image of the Managed Switch’s ports. The Mode can be set to display different information for the ports, including Link up or Link down. Clicking on the image of a port opens the Port Statistics page.
The port status are illustrated as follows:
Disabled Down Link State
RJ45 Ports
SFP Ports
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Main Menu
Using the onboard web agent, you can define system parameters, manage and control the Managed Switch, and all its ports, or monitor network conditions. Via the Web-Management, the administrator can set up the Managed Switch by selecting the functions those listed in the Main Function. The screen in Figure 4-1-5 appears.
Figure 4-1-5: Managed Switch Main Functions Menu
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4.2 System
Use the System menu items to display and configure basic administrative details of the Managed Switch. Under the System, the following topics are provided to configure and view the system information. This section has the following items:
■ System Information
■ IP Configuration
■ IP Status
The Managed Switch system information is provided here.
Configures the Managed Switch-managed IPv4/IPv6 interface and IP routes on this page.
This page displays the status of the IP protocol layer. The status is defined by the IP interfaces, the IP routes and the neighbour cache (ARP cache) status.
This page provides an overview of the current users. Currently the only way ■ Users Configuration to login as another user on the web server is to close and reopen the browser.
■ Privilege Levels
■ NTP Configuration
■ Time Configuration
■ UPnP
This page provides an overview of the privilege levels.
Configure NTP server on this page.
Configure time parameter on this page.
Configure UPnP on this page.
■ DHCP Relay
Configure DHCP Relay on this page.
■ DHCP Relay Statistics
This page provides statistics for DHCP relay.
■ CPU Load
■ System Log
This page displays the CPU load, using an SVG graph.
The Managed Switch system log information is provided here.
■ Detailed Log
■ Remote Syslog
The Managed Switch system detailed log information is provided here.
Configure remote syslog on this page.
■ SMTP Configuration
Configuration SMTP parameters on this page.
■ Web Firmware Upgrade
This page facilitates an update of the firmware controlling the Managed
Switch.
■ TFTP Firmware Upgrade
Upgrade the firmware via TFTP server
■ Save Startup Config This copies running-config to startup-config, thereby ensuring that the currently active configuration will be used at the next reboot.
■ Configuration Download You can download the files on the switch.
■ Configuration Upload You can upload the files to the switch.
■ Configuration Activate You can activate the configuration file present on the switch.
■ Configuration Delete You can delete the writable files which stored in flash.
Configuration active or alternate firmware on this page. ■ Image Select
■ Factory Default You can reset the configuration of the Managed Switch on this page. Only the IP configuration is retained.
■ System Reboot
You can restart the Managed Switch on this page. After restarting, the
Managed Switch will boot normally.
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4.2.1 System Information
The System Infomation page provides information for the current device information. System Information page helps a switch administrator to identify the hardware MAC address, software version and system uptime. The screen in Figure 4-2-1 appears.
Figure 4-2-1: System Information page Screenshot
The page includes the following fields:
Object
•
Contact
•
Name
•
Location
•
MAC Address
• Temperature
•
System Date
• System Uptime
• Switch ID
• Model
• Software Version
Description
The system contact configured in SNMP | System Information | System Contact.
The system name configured in SNMP | System Information | System Name.
The system location configured in SNMP | System Information | System Location.
The MAC Address of this Managed Switch.
Indicates chipset temperature.
The current (GMT) system time and date. The system time is obtained through the configured NTP Server, if any.
The period of time the device has been operational.
The stacked ID of the stack group.
Display the switch model name.
The software version of the Managed Switch.
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page; any changes made locally will be undone.
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4.2.2 IP Configuration
The IP Configuration includes the IP Configuration, IP Interface and IP Routes. The configured column is used to view or change the IP configuration. The maximum number of interfaces supported is 128 and the maximum number of routes is 32.
The screen in Figure 4-2-2 appears.
Figure 4-2-2: IP Configuration page Screenshot
The current column is used to show the active IP configuration.
Object
•
IP Configurations Mode
DNS Server
Description
Configure whether the IP stack should act as a Host or a Router. In
Host
mode, IP traffic between interfaces will not be routed. In Router mode traffic is routed between all interfaces.
This setting controls the DNS name resolution done by the switch. The following modes are supported:
From any DHCP interfaces
The first DNS server offered from a DHCP lease to a DHCP-enabled interface will be used.
No DNS server
No DNS server will be used.
Configured
Explicitly provide the IP address of the DNS Server in dotted decimal notation.
From this DHCP interface
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•
IP Address
•
IP Routes
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DNS Proxy
Specify from which DHCP-enabled interface a provided DNS server should be preferred.
When DNS proxy is enabled, system will relay DNS requests to the currently configured DNS server, and reply as a DNS resolver to the client devices on the network.
Delete
VLAN
Select this option to delete an existing IP interface.
The VLAN associated with the IP interface. Only ports in this VLAN will be able to access the IP interface. This field is only available for input when creating an new interface.
IPv4
DHCP
Enabled
Fallback
IPv4 Address
Enable the DHCP client by checking this box.
The number of seconds for trying to obtain a DHCP lease.
Current Lease
For DHCP interfaces with an active lease, this column show the current interface address, as provided by the DHCP server.
Provide the IP address of this Managed Switch in dotted decimal notation.
Mask Length
The IPv4 network mask, in number of bits (prefix length). Valid values are between 0 and 30 bits for a IPv4 address.
IPv6 Address
Provide the IP address of this Managed Switch. A IPv6 address is in
128-bit records represented as eight fields of up to four hexadecimal digits with a colon separating each field (:).
Mask Length
The IPv6 network mask, in number of bits (prefix length). Valid values are between 1 and 128 bits for a IPv6 address.
Delete
Network
Select this option to delete an existing IP route.
The destination IP network or host address of this route. Valid format is dotted decimal notationor a valid IPv6 notation. A default route can use the value 0.0.0.0or IPv6 :: notation.
The destination IP network or host mask, in number of bits (prefix length).
Mask Length
Gateway
Next Hop VLAN
The IP address of the IP gateway. Valid format is dotted decimal notation or a valid IPv6 notation. Gateway and Network must be of the same type.
The VLAN ID (VID) of the specific IPv6 interface associated with the gateway.
Buttons
: Click to add a new IP interface. A maximum of 128 interfaces is supported.
: Click to add a new IP route. A maximum of 32 routes is supported.
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
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4.2.3 IP Status
IP Status displays the status of the IP protocol layer. The status is defined by the IP interfaces, the IP routes and the neighbour cache (ARP cache) status. The screen in Figure 4-2-3 appears.
The page includes the following fields:
Object
• IP Interfaces
• IP Routes
• Neighbor Cache
Interface
Type
Address
Status
Network
Gateway
Status
IP Address
Link Address
Figure 4-2-3: IP Status page Screenshot
Description
The name of the interface.
The address type of the entry. This may be LINK or IPv4.
The current address of the interface (of the given type).
The status flags of the interface (and/or address).
The destination IP network or host address of this route.
The gateway address of this route.
The status flags of the route.
The IP address of the entry.
The Link (MAC) address for which a binding to the IP address given exist.
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page.
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4.2.4 Users Configuration
This page provides an overview of the current users. Currently the only way to login as another user on the web server is to close and reopen the browser. After setup is completed, press the “Apply” button to take effect. Please login web interface with a new user name and password as Figure 4-2-4 shows.
The page includes the following fields:
Figure 4-2-4: Users Configuration page Screenshot
Object
• User Name
•
Privilege Level
Description
The name identifying the user. This is also a link to Add/Edit User.
The privilege level of the user.
The allowed range is 1 to 15. If the privilege level value is 15, it can access all groups, i.e. that is granted the fully control of the device. But others value need to refer to each group privilege level. User's privilege should be same or greater than the group privilege level to have the access of that group.
By default setting, most groups privilege level 5 has the read-only access and privilege level 10 has the read-write access. And the system maintenance
(software upload, factory defaults and etc.) need user privilege level 15.
Generally, the privilege level 15 can be used for an administrator account, privilege level 10 for a standard user account and privilege level 5 for a guest account.
Buttons
: Click to add a new user.
Add/Edit User
This page configures a user – add, edit or delete user.
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Figure 4-2-5: Add/Edit User Configuration page Screenshot
The page includes the following fields:
Object
• Username
• Password
• Password (again)
• Privilege Level
Description
A string identifying the user name that this entry should belong to. The allowed string length is 1 to 31. The valid user name is a combination of letters, numbers and underscores.
The password of the user. The allowed string length is 1 to 31.
Please enter the user’s new password here again to confirm.
The privilege level of the user.
The allowed range is 1 to 15. If the privilege level value is 15, it can access all groups, i.e. that is granted the full control of the device. But other values need to refer to each group privilege level. User's privilege should be the same or greater than the group privilege level to have access to that group.
Buttons
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
: Click to undo any changes made locally and return to the Users.
: Delete the current user. This button is not available for new configurations (Add new user)
By default setting, most groups privilege level 5 has the read-only access and privilege level 10 has the read-write access. And the system maintenance (software upload, factory defaults, etc.) needs user privilege level 15.
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Generally, the privilege level 15 can be used for an administrator account, privilege level 10 for a standard user account and privilege level 5 for a guest account.
Once the new user is added, the new user entry shown on the Users Configuration page.
Figure 4-2-6: User Configuration page Screenshot
If you forget the new password after changing the default password, please press the “Reset” button on the front panel of the Managed Switch for over 10 seconds and then release it. The current setting including VLAN will be lost and the Managed Switch will restore to the default mode.
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4.2.5 Privilege Levels
This page provides an overview of the privilege levels. After setup is completed, please press the “Apply” button to take effect.
Please login web interface with the new user name and password and the screen in Figure 4-2-7 appears.
Figure 4-2-7: Privilege Levels Configuration page Screenshot
The page includes the following fields:
Object Description
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• Group Name
•
Privilege Level
User’s Manual of SGS-5220 Series
The name identifying the privilege group. In most cases, a privilege level group consists of a single module (e.g., LACP, RSTP or QoS), but a few of them contain more than one. The following description defines these privilege level groups in details:
System: Contact, Name, Location, Timezone, Log.
Security: Authentication, System Access Management, Port (contains Dot1x port, MAC based and the MAC Address Limit), ACL, HTTPS, SSH, ARP
Inspection and IP source guard.
IP: Everything except 'ping'.
Port: Everything except 'VeriPHY'.
Diagnostics: 'ping' and 'VeriPHY'.
Maintenance: CLI- System Reboot, System Restore Default, System
Password, Configuration Save, Configuration Load and Firmware Load.
Web- Users, Privilege Levels and everything in Maintenance.
Debug: Only present in CLI.
Every privilege level group has an authorization level for the following sub groups:
Configuration read-only
Configuration/execute read-write
Status/statistics read-only
Status/statistics read-write (e.g. for clearing of statistics).
Buttons
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
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4.2.6 NTP Configuration
Configure NTP on this page. NTP is an acronym for Network Time Protocol, a network protocol for synchronizing the clocks of computer systems. NTP uses UDP (data grams) as transport layer. You can specify NTP Servers. The NTP Configuration screen in Figure 4-2-8 appears.
The page includes the following fields:
Figure 4-2-8: NTP Configuration page Screenshot
Object
• Mode
•
Server #
Description
Indicates the NTP mode operation. Possible modes are:
Enabled: Enable NTP mode operation. When enable NTP mode operation, the agent forward and to transfer NTP messages between the clients and the server when they are not on the same subnet domain.
Disabled: Disable NTP mode operation.
Provide the NTP IPv4 or IPv6 address of this switch. IPv6 address is in 128-bit records represented as eight fields of up to four hexadecimal digits with a colon separates each field (:).
For example, 'fe80::215:c5ff:fe03:4dc7'. The symbol '::' is a special syntax that can be used as a shorthand way of representing multiple 16-bit groups of contiguous zeros; but it can only appear once. It also used a following legally
IPv4 address. For example, '::192.1.2.34'.
Buttons
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
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4.2.7 Time Configuration
Configure Time Zone on this page. A Time Zone is a region that has a uniform standard time for legal, commercial, and social purposes. It is convenient for areas in close commercial or other communication to keep the same time, so time zones tend to follow the boundaries of countries and their subdivisions. The Time Zone Configuration screen in Figure 4-2-9 appears
Figure 4-2-9: Time Configuration page Screenshot
The page includes the following fields:
Object
• Time Zone
•
Acronym
• Daylight Saving Time
Description
Lists various Time Zones world wide. Select appropriate Time Zone from the drop down and click Save to set.
User can set the acronym of the time zone. This is a User configurable acronym to identify the time zone. ( Range : Up to 16 characters )
This is used to set the clock forward or backward according to the configurations set below for a defined Daylight Saving Time duration. Select 'Disable' to disable the Daylight Saving Time configuration. Select 'Recurring' and configure the
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•
Start Time Settings
• End Time Settings
•
Offset Settings
Daylight Saving Time duration to repeat the configuration every year. Select
'Non-Recurring' and configure the Daylight Saving Time duration for single time configuration. ( Default : Disabled ).
• Week - Select the starting week number.
• Day - Select the starting day.
• Month - Select the starting month.
• Hours - Select the starting hour.
• Minutes - Select the starting minute.
• Week - Select the ending week number.
• Day - Select the ending day.
• Month - Select the ending month.
• Hours - Select the ending hour.
• Minutes - Select the ending minute
Enter the number of minutes to add during Daylight Saving Time. ( Range: 1 to
1440 )
Buttons
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
4.2.8 UPnP
Configure UPnP on this page. UPnP is an acronym for Universal Plug and Play. The goals of UPnP are to allow devices to connect seamlessly and to simplify the implementation of networks in the home (data sharing, communications, and entertainment) and in corporate environments for simplified installation of computer components. The UPnP Configuration screen in Figure 4-2-10 appears.
Figure 4-2-10: UPnP Configuration page Screenshot
The page includes the following fields:
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Buttons
Object
• Mode
• TTL
•
Advertising Duration
Description
Indicates the UPnP operation mode. Possible modes are:
Enabled: Enable UPnP mode operation.
Disabled: Disable UPnP mode operation.
When the mode is enabled, two ACEs are added automatically to trap UPnP related packets to CPU. The ACEs are automatically removed when the mode is disabled.
The TTL value is used by UPnP to send SSDP advertisement messages.
Valid values are in the range of 1 to 255.
The duration, carried in SSDP packets, is used to inform a control point or control points how often it or they should receive a SSDP advertisement message from this switch. If a control point does not receive any message within the duration, it will think that the switch no longer exists. Due to the unreliable nature of UDP, in the standard it is recommended that such refreshing of advertisements to be done at less than one-half of the advertising duration. In the implementation, the switch sends SSDP messages periodically at the interval one-half of the advertising duration minus 30 seconds. Valid values are in the range 100 to
86400.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
Figure 4-2-11: UPnP devices show on Windows My Network Place
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4.2.9 DHCP Relay
Configure DHCP Relay on this page. DHCP Relay is used to forward and to transfer DHCP messages between the clients and the server when they are not on the same subnet domain.
The DHCP option 82 enables a DHCP relay agent to insert specific information into a DHCP request packets when forwarding client DHCP packets to a DHCP server and remove the specific information from a DHCP reply packets when forwarding server
DHCP packets to a DHCP client. The DHCP server can use this information to implement IP address or other assignment policies. Specifically the option works by setting two sub-options:
Circuit ID (option 1)
Remote ID (option2).
The Circuit ID sub-option is supposed to include information specific to which circuit the request came in on.
The Remote ID sub-option was designed to carry information relating to the remote host end of the circuit.
The definition of Circuit ID in the switch is 4 bytes in length and the format is "vlan_id" "module_id" "port_no". The parameter of
"vlan_id" is the first two bytes representing the VLAN ID. The parameter of "module_id" is the third byte for the module ID (in standalone switch it always equals 0; in stackable switch it means switch ID). The parameter of "port_no" is the fourth byte and it means the port number.
The Remote ID is 6 bytes in length, and the value equals the DHCP relay agent’s MAC address. The DHCP Relay Configuration screen in Figure 4-2-12 appears.
Figure 4-2-12 DHCP Relay Configuration page Screenshot
The page includes the following fields:
Object
• Relay Mode
• Relay Server
Description
Indicates the DHCP relay mode operation. Possible modes are:
Enabled: Enable DHCP relay mode operation. When enabling DHCP relay mode operation, the agent forwards and transfers DHCP messages between the clients and the server when they are not on the same subnet domain.
And the DHCP broadcast message won't flood for security considered.
Disabled: Disable DHCP relay mode operation.
Indicates the DHCP relay server IP address. A DHCP relay agent is used to forward and transfer DHCP messages between the clients and the server when
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• Relay Information
Mode
• Relay Information
Policy
they are not on the same subnet domain.
Indicates the DHCP relay information mode option operation. Possible modes are:
Enabled: Enable DHCP relay information mode operation. When enabling
DHCP relay information mode operation, the agent inserts specific information (option82) into a DHCP message when forwarding to DHCP server and removing it from a DHCP message when transferring to DHCP client. It only works under DHCP relay operation mode enabled.
Disabled: Disable DHCP relay information mode operation.
Indicates the DHCP relay information option policy. When enabling DHCP relay information mode operation, if agent receives a DHCP message that already contains relay agent information. It will enforce the policy. And it only works under
DHCP relay information operation mode enabled. Possible policies are:
Replace: Replace the original relay information when receiving a DHCP message that already contains it.
Keep: Keep the original relay information when receiving a DHCP message that already contains it.
Drop: Drop the package when receiving a DHCP message that already contains relay information.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.2.10 DHCP Relay Statistics
This page provides statistics for DHCP relay. The DHCP Relay Statistics screen in Figure 4-2-13 appears.
Figure 4-2-13: DHCP Relay Statistics page Screenshot
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The page includes the following fields:
Server Statistics
Object
• Transmit to Server
• Transmit Error
• Receive from Server
Description
The packets number that relayed from client to server.
The packets number that errors sending packets to clients.
The packets number that received packets from server.
• Receive Missing Agent
Option
• Receive Missing
Circuit ID
• Receive Missing
The packets number that received packets without agent information options.
The packets number that received packets which the Circuit ID option was missing.
The packets number that received packets which Remote ID option was missing.
Remote ID
• Receive Bad Circuit ID
The packets number that the Circuit ID option did not match known circuit ID.
Receive Bad Remote ID
The packets number that the Remote ID option did not match known Remote ID.
Client Statistics
Object
• Transmit to Client
• Transmit Error
Description
The packets number that relayed packets from server to client.
The packets number that erroneously sent packets to servers.
• Receive from Client
The packets number that received packets from server.
• Receive Agent Option
The packets number that received packets with relay agent information option.
• Replace Agent Option
The packets number that replaced received packets with relay agent information option.
• Keep Agent Option
The packets number that kept received packets with relay agent information option.
• Drop Agent Option
The packets number that dropped received packets with relay agent information option.
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
: Clears all statistics.
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4.2.11 CPU Load
This page displays the CPU load, using a SVG graph. The load is measured as average over the last 100ms, 1sec and 10 seconds intervals. The last 120 samles are graphed, and the last numbers are displayed as text as well. In order to display the
SVG graph, your browser must support the SVG format. Consult the SVG Wiki for more information on browser support.
Specifically, at the time of writing, Microsoft Internet Explorer will need to have a plugin installed to support SVG. The CPU Load screen in Figure 4-2-14 appears.
Figure 4-2-14: CPU Load page Screenshot
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
If your browser cannot display anything on this page, please download Adobe SVG tool and install it in your computer.
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4.2.12 System Log
The Managed Switch system log information is provided here. The System Log screen in Figure 4-2-15 appears.
Figure 4-2-15: System Log page Screenshot
The page includes the following fields:
Object
• ID
• Level
• Clear Level
• Time
• Message
Description
The ID (>= 1) of the system log entry.
The level of the system log entry. The following level types are supported:
Info: Information level of the system log.
Warning: Warning level of the system log.
Error: Error level of the system log.
All: All levels.
To clear the system log entry level. The following level types are supported:
Info: Information level of the system log.
Warning: Warning level of the system log.
Error: Error level of the system log.
All: All levels.
The time of the system log entry.
The message of the system log entry.
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Updates the system log entries, starting from the current entry ID.
: Flushes the selected log entries.
: Hides the selected log entries.
: Downloads the selected log entries.
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: Updates the system log entries, starting from the first available entry ID.
: Updates the system log entries, ending at the last entry currently displayed.
: Updates the system log entries, starting from the last entry currently displayed.
: Updates the system log entries, ending at the last available entry ID.
4.2.13 Detailed Log
The Managed Switch system detailed log information is provided here. The Detailed Log screen in Figure 4-2-16 appears.
The page includes the following fields:
Figure 4-2-15: Detailed Log page Screenshot
Buttons
Object
• ID
• Message
Description
The ID (>= 1) of the system log entry.
The message of the system log entry.
: Download the system log entry to the current entry ID.
: Updates the system log entry to the current entry ID.
: Updates the system log entry to the first available entry ID.
: Updates the system log entry to the previous available entry ID.
: Updates the system log entry to the next available entry ID.
: Updates the system log entry to the last available entry ID.
: Print the system log entry to the current entry ID.
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4.2.14 Remote Syslog
Configure remote syslog on this page. The Remote Syslog screen in Figure 4-2-17 appears.
The page includes the following fields:
Figure 4-2-17: Remote Syslog page Screenshot
Object
• Mode
• Syslog Server IP
• Syslog Level
Description
Indicates the server mode operation. When the mode operation is enabled, the syslog message will send out to syslog server. The syslog protocol is based on
UDP communication and received on UDP port 514 and the syslog server will not send acknowledgments back sender since UDP is a connectionless protocol and it does not provide acknowledgments. The syslog packet will always send out even if the syslog server does not exist. Possible modes are:
Enabled: Enable remote syslog mode operation.
Disabled: Disable remote syslog mode operation.
Indicates the IPv4 host address of syslog server. If the switch provides DNS feature, it also can be a host name.
Indicates what kind of message will send to syslog server. Possible modes are:
Info: Send information, warnings and errors.
Warning: Send warnings and errors.
Error: Send errors.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.2.15 SMTP Configuration
This page facilitates an SMTP Configuration on the switch. The SMTP Configure screen in Figure 4-2-18 appears.
Figure 4-2-18: SMTP Configuration page Screenshot
The page includes the following fields:
Object
• SMTP Mode
• SMTP Server
• SMTP Port
• SMTP Authentication
Description
Controls whether SMTP is enabled on this switch.
Type the SMTP server name or the IP address of the SMTP server.
Set port number of SMTP service.
Controls whether SMTP authentication is enabled If authentication is required when an e-mail is sent.
Type the user name for the SMTP server if Authentication is Enable.
Buttons
• Authentication User
Name
• Authentication
Password
• E-mail From
• E-mail Subject
• E-mail 1 To
• E-mail 2 To
Type the password for the SMTP server if Authentication is Enable.
Type the sender’s E-mail address. This address is used for reply e-mails.
Type the subject/title of the e-mail.
Type the receiver’s e-mail address.
: Send a test mail to mail server to check this account is available or not.
: Click to save changes.
: Click to undo any changes made locally and revert to previously saved values.
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4.2.16 Web Firmware Upgrade
This page facilitates an update of the firmware controlling the switch. The Web Firmware Upgrade screen in Figure 4-2-19 appears.
Figure 4-2-19: Web Firmware Upgrade page Screenshot
To open Firmware Upgrade screen, perform the following:
1. Click System -> Web Firmware Upgrade.
2. The Firmware Upgrade screen is displayed as in Figure 4-2-19 .
3. Click the “ “button of the Main page, the system would pop up the file selection menu to choose firmware.
4. Select on the firmware then click “ ”, the Software Upload Progress would show the file with upload status.
5. Once the software is loaded to the system successfully, the following screen appears. The system will load the new software after reboot.
Figure 4-2-20: Software Successfully Loaded Notice Screen
DO NOT Power OFF
the Managed Switch until the update progress is complete.
Do not quit the Firmware Upgrade page without pressing the “OK” button after the image is loaded. Or the system won’t apply the new firmware. User has to repeat the firmware upgrade processes.
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4.2.17 TFTP Firmware Upgrade
The Firmware Upgrade page provides the functions to allow a user to update the Managed Switch firmware from the TFTP server in the network. Before updating, make sure you have your TFTP server ready and the firmware image is on the TFTP server. The TFTP Firmware Upgrade screen in Figure 4-2-21 appears.
Figure 4-2-20: TFTP Firmware Update page Screenshot
The page includes the following fields:
Buttons
Object
• TFTP Server IP
• Firmware File Name
Description
Fill in your TFTP server IP address.
The name of firmware image.
(Maximum length : 24 characters)
: Click to upgrade firmware.
DO NOT Power OFF
the Managed Switch until the update progress is complete.
Do not quit the Firmware Upgrade page without pressing the “OK” button after the image is loaded. Or the system won’t apply the new firmware. User has to repeat the firmware upgrade processes.
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4.2.18 Save Startup Config
This function allows save the current configuration, thereby ensuring that the current active configuration can be used at the next reboot screen in Figure 4-2-22 appears. After saving the configuratioin, the screen Figure 4-2-23 will appear.
Figure 4-2-22: Configuration Save page Screenshot
Figure 4-2-23: Finish Saving page Screenshot
4.2.19 Configuration Download
The switch stores its configuration in a number of text files in CLI format. The files are either virtual (RAM-based) or stored in flash on the switch.
There are three system files:
• running-config: A virtual file that represents the currently active configuration on the switch. This file is volatile.
• startup-config: The startup configuration for the switch, read at boot time.
• default-config: A read-only file with vendor-specific configuration. This file is read when the system is restored to default settings.
It is also possible to store up to two other files and apply them to running-config, thereby switching configuration.
Configuration Download page allows the download the running-config, startup-config and default-config on the switch. Please refer to the Figure 4-2-24 shown below.
Figure 4-2-24: Configuration Download page Screenshot
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4.2.20 Configuration Upload
Configuration Upload page allows the upload the running-config and startup-config on the switch. Please refer to the Figure
4-2-25 shown below.
Figure 4-2-25: Configuration Upload page Screenshot
If the destination is running-config, the file will be applied to the switch configuration. This can be done in two ways:
•
Replace mode: The current configuration is fully replaced with the configuration in the uploaded file.
•
Merge mode: The uploaded file is merged into
running-config.
If the file system is full (i.e. contains the three system files mentioned above plus two other files), it is not possible to create new files, but an existing file must be overwritten or another deleted first.
4.2.21 Configuration Activate
Configuration Activate page allows to activate the startup-config and default-config files present on the switch. Please refer to the Figure 4-2-26 shown below.
Figure 4-2-26: Configuration Activate page Screenshot
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It is possible to activate any of the configuration files present on the switch, except for running-config which represents the currently active configuration.
Select the file to activate and click configuration with that of the selected file.
. This will initiate the process of completely replacing the existing
4.2.22 Configuration Delete
Configuration Delete page allows to delete the startup-config and default-config files which stored in FLASH. If this is done and the switch is rebooted without a prior Save operation, this effectively resets the switch to default configuration. Please refer to the Figure 4-2-27 shown below.
Figure 4-2-27: Configuration Delete page Screenshot
4.2.23 Image Select
This page provides information about the active and alternate (backup) firmware images in the device, and allows you to revert to the alternate image. The web page displays two tables with information about the active and alternate firmware images. The
Image Select screen in Figure 4-2-28 appears.
In case the active firmware image is the alternate image, only the "Active Image" table is shown. In this case, the Activate Alternate Image button is also disabled.
1. If the alternate image is active (due to a corruption of the primary image or by manual intervention), uploading a new firmware image to the device will automatically use the primary image slot and activate this.
2. The firmware version and date information may be empty for older firmware releases. This does not constitute an error.
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Figure 4-2-28: Software Image Selection page Screenshot
The page includes the following fields:
Object
• Image
Buttons
• Version
• Date
Description
The flash index name of the firmware image. The name of primary (preferred) image is image, the alternate image is named image.bk.
The version of the firmware image.
The date where the firmware was produced.
: Click to use the alternate image. This button may be disabled depending on system state.
4.2.24 Factory Default
You can reset the configuration of the Managed Switch on this page. Only the IP configuration is retained. The new configuration is available immediately, which means that no restart is necessary. The Factory Default screen in Figure 4-2-29 appears.
Figure 4-2-29: Factory Default page Screenshot
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Buttons
: Click to reset the configuration to Factory Defaults.
: Click to return to the Port State page without resetting the configuration.
To reset the Managed Switch to the Factory default setting, you can also press the hardware reset button at the front panel about 10 seconds. After the device be rebooted. You can login the management WEB interface within the same subnet of 192.168.0.xx.
4.2.25 System Reboot
The Reboot page enables the device to be rebooted from a remote location. Once the Reboot button is pressed, user have to re-login the WEB interface about 60 seconds later, the System Reboot screen in Figure 4-2-30 appears.
Figure 4-2-30: System Reboot page Screenshot
Buttons
: Click to reboot the system.
: Click to return to the Port State page without rebooting the system.
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4.3 Simple Network Management Protocol
4.3.1 SNMP Overview
The Simple Network Management Protocol (SNMP) is an application layer protocol that facilitates the exchange of management information between network devices. It is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite.
SNMP enables network administrators to manage network performance, find and solve network problems, and plan for network growth.
An SNMP-managed network consists of three key components: Network management stations (NMSs), SNMP agents,
Management information base (MIB) and network-management protocol：
■
Network management stations (NMSs)：Sometimes called consoles, these devices execute management applications that monitor and control network elements. Physically, NMSs are usually engineering workstation-caliber computers with fast CPUs, megapixel color displays, substantial memory, and abundant disk space. At least one NMS must be present in each managed environment.
■
Agents：Agents are software modules that reside in network elements. They collect and store management information such as the number of error packets received by a network element.
■
Management information base (MIB)：A MIB is a collection of managed objects residing in a virtual information store.
Collections of related managed objects are defined in specific MIB modules.
■
Network-management protocol：A management protocol is used to convey management information between agents and NMSs. SNMP is the Internet community's de facto standard management protocol.
SNMP Operations
SNMP itself is a simple request/response protocol. NMSs can send multiple requests without receiving a response.
■
Get -- Allows the NMS to retrieve an object instance from the agent.
■
Set -- Allows the NMS to set values for object instances within an agent.
■
Trap -- Used by the agent to asynchronously inform the NMS of some event. The SNMPv2 trap message is designed to replace the SNMPv1 trap message.
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SNMP community
An SNMP community is the group that devices and management stations running SNMP belong to. It helps define where information is sent. The community name is used to identify the group. A SNMP device or agent may belong to more than one
SNMP community. It will not respond to requests from management stations that do not belong to one of its communities. SNMP default communities are:
。
Write = private
。
Read = public
Use the SNMP Menu to display or configure the Managed Switch's SNMP function. This section has the following items:
System Configuration
Trap Configuration
System Information
SNMPv3 Communities
SNMPv3 Users
SNMPv3 Groups
SNMPv3 Views
SNMPv3 Access
Configure SNMP on this page.
Configure SNMP trap on this page.
The system information is provided here.
Configure SNMPv3 communities table on this page.
Configure SNMPv3 users table on this page.
Configure SNMPv3 groups table on this page.
Configure SNMPv3 views table on this page.
Configure SNMPv3 accesses table on this page.
4.3.2 SNMP System Configuration
Configure SNMP on this page. The SNMP System Configuration screen in Figure 4-3-1 appears.
Figure 4-3-1: SNMP System Configuration page Screenshot
The page includes the following fields:
Object
•
Mode
•
Version
Description
Indicates the SNMP mode operation. Possible modes are:
Enabled: Enable SNMP mode operation.
Disabled: Disable SNMP mode operation.
Indicates the SNMP supported version. Possible versions are:
SNMP v1: Set SNMP supported version 1.
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•
Read Community
•
Write Community
•
Engine ID
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SNMP v2c: Set SNMP supported version 2c.
SNMP v3: Set SNMP supported version 3.
Indicates the community read access string to permit access to SNMP agent.
The allowed string length is 0 to 255, and the allowed content is the ASCII characters from 33 to 126.
The field is applicable only when SNMP version is SNMPv1 or SNMPv2c. If
SNMP version is SNMPv3, the community string will be associated with SNMPv3 communities table. It provides more flexibility to configure security name than a
SNMPv1 or SNMPv2c community string. In addition to community string, a particular range of source addresses can be used to restrict source subnet.
Indicates the community write access string to permit access to SNMP agent.
The allowed string length is 0 to 255, and the allowed content is the ASCII characters from 33 to 126.
The field is applicable only when SNMP version is SNMPv1 or SNMPv2c. If
SNMP version is SNMPv3, the community string will be associated with SNMPv3 communities table. It provides more flexibility to configure security name than a
SNMPv1 or SNMPv2c community string. In addition to community string, a particular range of source addresses can be used to restrict source subnet.
Indicates the SNMPv3 engine ID. The string must contain an even number between 10 and 64 hexadecimal digits, but all-zeros and all-'F's are not allowed.
Change of the Engine ID will clear all original local users.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.3.3 SNMP Trap Configuration
Configure SNMP trap on this page. The SNMP Trap Configuration screen in Figure 4-3-2 appears.
Figure 4-3-2: SNMP Trap Configuration page Screenshot
The page includes the following fields:
Object
•
Trap Config
•
Trap Mode
•
Trap Version
Description
Indicates which trap Configuration's name for configuring. The allowed string length is 0 to 255, and the allowed content is ASCII characters from 33 to 126.
Indicates the SNMP trap mode operation. Possible modes are:
Enabled: Enable SNMP trap mode operation.
Disabled: Disable SNMP trap mode operation.
Indicates the SNMP trap supported version. Possible versions are:
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•
Trap Community
•
Trap Destination
Address
• Trap Destination Port
SNMP v1: Set SNMP trap supported version 1.
SNMP v2c: Set SNMP trap supported version 2c.
SNMP v3: Set SNMP trap supported version 3.
Indicates the community access string when send SNMP trap packet. The allowed string length is 0 to 255, and the allowed content is the ASCII characters from 33 to 126.
Indicates the SNMP trap destination address.
• Trap Inform Mode
• Trap Inform Timeout
(seconds)
• Trap Inform Retry
Times
• Trap Probe Security
Engine ID
• Trap Security Engine
ID
• Trap Security Name
• System
• Interface
• AAA
Indicates the SNMP trap destination port. SNMP Agent will send SNMP message via this port, the port range is 1~65535.
Indicates the SNMP trap inform mode operation. Possible modes are:
Enabled: Enable SNMP trap authentication failure.
Disabled: Disable SNMP trap authentication failure.
Indicates the SNMP trap inform timeout.
The allowed range is 0 to 2147.
Indicates the SNMP trap inform retry times.
The allowed range is 0 to 255.
Indicates the SNMPv3 trap probe security engine ID mode of operation. Possible values are:
Enabled: Enable SNMP trap probe security engine ID mode of operation.
Disabled: Disable SNMP trap probe security engine ID mode of operation.
Indicates the SNMP trap security engine ID. SNMPv3 sends traps and informs using USM for authentication and privacy. A unique engine ID for these traps and informs is needed. When "Trap Probe Security Engine ID" is enabled, the ID will be probed automatically. Otherwise, the ID specified in this field is used. The string must contain an even number(in hexadecimal format) with number of digits between 10 and 64, but all-zeros and all-'F's are not allowed.
Indicates the SNMP trap security name. SNMPv3 traps and informs using USM for authentication and privacy. A unique security name is needed when traps and informs are enabled.
Enable/disable that the Interface group's traps. Possible traps are:
Warm Start: Enable/disable Warm Start trap.
Cold Start: Enable/disable Cold Start trap.
Indicates that the Interface group's traps. Possible traps are:
Link Up: Enable/disable Link up trap.
Link Down: Enable/disable Link down trap.
LLDP: Enable/disable LLDP trap.
Indicates that the AAA group's traps. Possible traps are:
Authentication Fail : Enable/disable SNMP trap authentication failure trap.
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• Switch
Indicates that the Switch group's traps. Possible traps are:
STP: Enable/disable STP trap.
RMON: Enable/disable RMON trap.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.3.4 SNMP System Information
The switch system information is provided here. The SNMP System Information screen in Figure 4-3-3 appears.
Figure 4-3-3: System Information Configuration page Screenshot
The page includes the following fields:
Object
•
System Contact
•
•
System Name
System Location
Description
The textual identification of the contact person for this managed node, together with information on how to contact this person. The allowed string length is 0 to
255, and the allowed content is the ASCII characters from 32 to 126.
An administratively assigned name for this managed node. By convention, this is the node's fully-qualified domain name. A domain name is a text string drawn from the alphabet (A-Za-z), digits (0-9), minus sign (-). No space characters are permitted as part of a name. The first character must be an alpha character. And the first or last character must not be a minus sign. The allowed string length is 0 to 255.
The physical location of this node(e.g., telephone closet, 3rd floor). The allowed string length is 0 to 255, and the allowed content is the ASCII characters from 32 to 126.
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4.3.5 SNMPv3 Configuration
4.3.5.1 SNMPv3 Communities
Configure SNMPv3 communities table on this page. The entry index key is Community. The SNMPv3 Communities screen in
Figure 4-3-4 appears.
Figure 4-3-4: SNMPv3 Communities Configuration page Screenshot
The page includes the following fields:
Object
•
Delete
•
Community
•
•
Source IP
Source Mask
Description
Check to delete the entry. It will be deleted during the next save.
Indicates the community access string to permit access to SNMPv3 agent. The allowed string length is 1 to 32, and the allowed content is ASCII characters from
33 to 126. The community string will be treated as security name and map a
SNMPv1 or SNMPv2c community string.
Indicates the SNMP access source address. A particular range of source addresses can be used to restrict source subnet when combined with source mask.
Indicates the SNMP access source address mask.
Buttons
: Click to add a new community entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.3.5.2 SNMPv3 Users
Configure SNMPv3 users table on this page. The entry index keys are Engine ID and User Name. The SNMPv3 Users screen in
Figure 4-3-5 appears.
Figure 4-3-5: SNMPv3 Users Configuration page Screenshot
The page includes the following fields:
Object
•
Delete
•
Engine ID
•
User Name
•
Security Level
•
Authentication
Protocol
Description
Check to delete the entry. It will be deleted during the next save.
An octet string identifying the engine ID that this entry should belong to. The string must contain an even number(in hexadecimal format) with number of digits between 10 and 64, but all-zeros and all-'F's are not allowed. The SNMPv3 architecture uses the User-based Security Model (USM) for message security and the View-based Access Control Model (VACM) for access control. For the
USM entry, the usmUserEngineID and usmUserName are the entry's keys.
In a simple agent, usmUserEngineID is always that agent's own snmpEngineID value. The value can also take the value of the snmpEngineID of a remote SNMP engine with which this user can communicate. In other words, if user engine ID equal system engine ID then it is local user; otherwise it's remote user.
A string identifying the user name that this entry should belong to. The allowed string length is 1 to 32, and the allowed content is ASCII characters from 33 to
126.
Indicates the security model that this entry should belong to. Possible security models are:
NoAuth, NoPriv: None authentication and none privacy.
Auth, NoPriv: Authentication and none privacy.
Auth, Priv: Authentication and privacy.
The value of security level cannot be modified if entry already exist. That means must first ensure that the value is set correctly.
Indicates the authentication protocol that this entry should belong to. Possible authentication protocol are:
None: None authentication protocol.
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• Authentication
Password
• Privacy Protocol
• Privacy Password
MD5: An optional flag to indicate that this user using MD5 authentication protocol.
SHA: An optional flag to indicate that this user using SHA authentication protocol.
The value of security level cannot be modified if entry already exist. That means must first ensure that the value is set correctly.
A string identifying the authentication pass phrase. For MD5 authentication protocol, the allowed string length is 8 to 32. For SHA authentication protocol, the allowed string length is 8 to 40. The allowed content is the ASCII characters from
33 to 126.
Indicates the privacy protocol that this entry should belong to. Possible privacy protocol are:
None: None privacy protocol.
DES: An optional flag to indicate that this user using DES authentication protocol.
AES: An optional flag to indicate that this user uses AES authentication protocol.
A string identifying the privacy pass phrase. The allowed string length is 8 to 32, and the allowed content is the ASCII characters from 33 to 126.
Buttons
: Click to add a new user entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.3.5.3 SNMPv3 Groups
Configure SNMPv3 groups table on this page. The entry index keys are Security Model and Security Name. The SNMPv3
Groups screen in Figure 4-3-6 appears.
Figure 4-3-6: SNMPv3 Groups Configuration page Screenshot
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The page includes the following fields:
Object
•
Delete
•
Security Model
•
Security Name
•
Group Name
Description
Check to delete the entry. It will be deleted during the next save.
Indicates the security model that this entry should belong to. Possible security models are:
v1: Reserved for SNMPv1.
v2c: Reserved for SNMPv2c.
usm: User-based Security Model (USM).
A string identifying the security name that this entry should belong to.
The allowed string length is 1 to 32, and the allowed content is the ASCII characters from 33 to 126.
A string identifying the group name that this entry should belong to.
The allowed string length is 1 to 32, and the allowed content is the ASCII characters from 33 to 126.
Buttons
: Click to add a new group entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.3.5.4 SNMPv3 Views
Configure SNMPv3 views table on this page. The entry index keys are View Name and OID Subtree. The SNMPv3 Views screen in Figure 4-3-7 appears.
Figure 4-3-7: SNMPv3 Views Configuration page Screenshot
The page includes the following fields:
Object
•
Delete
Description
Check to delete the entry. It will be deleted during the next save.
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•
View Name
•
View Type
•
OID Subtree
A string identifying the view name that this entry should belong to. The allowed string length is 1 to 32, and the allowed content is the ASCII characters from 33 to 126.
Indicates the view type that this entry should belong to. Possible view type are:
included: An optional flag to indicate that this view subtree should be included.
excluded: An optional flag to indicate that this view subtree should be excluded.
In general, if a view entry's view type is 'excluded', it should be exist another view entry which view type is 'included' and it's OID subtree overstep the 'excluded' view entry.
The OID defining the root of the subtree to add to the named view. The allowed
OID length is 1 to 128. The allowed string content is digital number or asterisk(*).
Buttons
: Click to add a new view entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.3.5.5 SNMPv3 Access
Configure SNMPv3 accesses table on this page. The entry index keys are Group Name, Security Model and Security Level.
The SNMPv3 Access screen in Figure 4-3-8 appears.
Figure 4-3-8: SNMPv3 Accesses Configuration page Screenshot
The page includes the following fields:
Object
•
Delete
•
Group Name
Description
Check to delete the entry. It will be deleted during the next save.
A string identifying the group name that this entry should belong to. The allowed
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Buttons
•
Security Model
•
Security Level
•
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• Write View Name
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string length is 1 to 32, and the allowed content is the ASCII characters from 33 to 126.
Indicates the security model that this entry should belong to. Possible security models are:
any: Accepted any security model (v1|v2c|usm).
v1: Reserved for SNMPv1.
v2c: Reserved for SNMPv2c.
usm: User-based Security Model (USM)
Indicates the security model that this entry should belong to. Possible security models are:
NoAuth, NoPriv: None authentication and none privacy.
Auth, NoPriv: Authentication and none privacy.
Auth, Priv: Authentication and privacy.
The name of the MIB view defining the MIB objects for which this request may request the current values. The allowed string length is 1 to 32, and the allowed content is the ASCII characters from 33 to 126.
The name of the MIB view defining the MIB objects for which this request may potentially SET new values. The allowed string length is 1 to 32, and the allowed content is the ASCII characters from 33 to 126.
: Click to add a new access entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.4 Port Management
Use the Port Menu to display or configure the Managed Switch's ports. This section has the following items:
Port Configuration
Configures port connection settings
Port Statistics Overview
Port Statistics Detail
Lists Ethernet and RMON port statistics
Lists Ethernet and RMON port statistics
SFP Module Information
Port Mirror
Display SFP information
Sets the source and target ports for mirroring
4.4.1 Port Configuration
This page displays current port configurations. Ports can also be configured here. The Port Configuration screen in Figure 4-4-1 appears.
The page includes the following fields:
Figure 4-4-1: Port Configuration page Screenshot
Object
•
Port
• Port Description
•
Link
Description
This is the logical port number for this row.
Indicates the per port description.
The current link state is displayed graphically. Green indicates the link is up and red that it is down.
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•
Current Link Speed
Provides the current link speed of the port.
•
Configured Link Speed
Select any available link speed for the given switch port. Draw the menu bar to select the mode.
Auto - Setup Auto negotiation for copper interface.
10Mbps HDX - Force sets 10Mbps/Half-Duplex mode.
10Mbps FDX - Force sets 10Mbps/Full-Duplex mode.
100Mbps HDX - Force sets 100Mbps/Half-Duplex mode.
100Mbps FDX - Force sets 100Mbps/Full-Duplex mode.
1Gbps FDX - Force sets 10000Mbps/Full-Duplex mode.
Auto Fiber (10G) – Setup 10G firber port for negotiation automatically.
Disable - Shutdown the port manually.
•
Flow Control
When Auto Speed is selected on a port, this section indicates the flow control capability that is advertised to the link partner.
When a fixed-speed setting is selected, that is what is used. The Current Rx column indicates whether pause frames on the port are obeyed, and the Current
Tx column indicates whether pause frames on the port are transmitted. The Rx and Tx settings are determined by the result of the last Auto-Negotiation.
Check the configured column to use flow control. This setting is related to the setting for Configured Link Speed.
• Maximum Frame Size
Enter the maximum frame size allowed for the switch port, including FCS. The allowed range is 1518 bytes to 10056 bytes.
• Excessive Collision
Mode
Configure port transmit collision behavior.
Discard: Discard frame after 16 collisions (default).
Restart: Restart back off algorithm after 16 collisions.
When set each port to run at 100M Full, 100M Half, 10M Full, and 10M Half-speed modes. The
Auto-MDIX function will disable.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
: Click to refresh the page. Any changes made locally will be undone.
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4.4.2 Port Statistics Overview
This page provides an overview of general traffic statistics for all switch ports. The Port Statistics Overview screen in Figure
4-4-2 appears.
Figure 4-4-2: Port Statistics Overview page Screenshot
The displayed counters are:
Object
•
Port
•
Packets
•
Bytes
•
Errors
•
Drops
• Filtered
Description
The logical port for the settings contained in the same row.
The number of received and transmitted packets per port.
The number of received and transmitted bytes per port.
The number of frames received in error and the number of incomplete transmissions per port.
The number of frames discarded due to ingress or egress congestion.
The number of received frames filtered by the forwarding process.
Buttons
: Download the Port Statistics Overview result as EXECL file.
: Click to refresh the page immediately.
: Clears the counters for all ports.
: Print the Port Statistics Overview result.
Auto-refresh : Check this box to enable an automatic refresh of the page at regular intervals.
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4.4.3 Port Statistics Detail
This page provides detailed traffic statistics for a specific switch port. Use the port select box to select which switch port details to display. The selected port belong to the currently selected stack unit, as reflected by the page header. The displayed counters are the totals for receive and transmit, the size counters for receive and transmit, and the error counters for receive and transmit.
The Port Statistics Detail screen in Figure 4-4-3 appears.
Figure 4-4-3: Detailed Port Statistics Port 1 page Screenshot
The page includes the following fields:
Receive Total and Transmit Total
Object
•
Rx and Tx Packets
•
Rx and Tx Octets
•
Rx and Tx Unicast
•
Rx and Tx Multicast
•
Rx and Tx Broadcast
• Rx and Tx Pause
Description
The number of received and transmitted (good and bad) packets
The number of received and transmitted (good and bad) bytes, including FCS, but excluding framing bits.
The number of received and transmitted (good and bad) unicast packets.
The number of received and transmitted (good and bad) multicast packets.
The number of received and transmitted (good and bad) broadcast packets.
A count of the MAC Control frames received or transmitted on this port that has an opcode indicating a PAUSE operation.
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Receive and Transmit Size Counters
The number of received and transmitted (good and bad) packets split into categories based on their respective frame sizes.
Receive and Transmit Queue Counters
The number of received and transmitted packets per input and output queue.
Receive Error Counters
Object
•
Rx Drops
•
Rx CRC/Alignment
•
Rx Undersize
•
Rx Oversize
•
Rx Fragments
• Rx Jabber
• Rx Filtered
Description
The number of frames dropped due to lack of receive buffers or egress congestion.
The number of frames received with CRC or alignment errors.
The number of short frames received with valid CRC.
The number of long frames received with valid CRC.
The number of short frames received with invalid CRC.
The number of long frames received with invalid CRC.
The number of received frames filtered by the forwarding process.
Short frames are frames that are smaller than 64 bytes.
Long frames are frames that are longer than the configured maximum frame length for this port.
1 Short frames are frames that are smaller than 64 bytes.
2 Long frames are frames that are longer than the configured maximum frame length for this port.
Transmit Error Counters
Object
•
Tx Drops
•
Tx Late/Exc. Coll.
Description
The number of frames dropped due to output buffer congestion.
The number of frames dropped due to excessive or late collisions.
Buttons
: Click to refresh the page immediately.
: Clears the counters for all ports.
Auto-refresh : Check this box to enable an automatic refresh of the page at regular intervals.
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4.4.4 SFP Module Information
The WGSW-48040HP has supported the SFP module with digital diagnostics monitoring (DDM) function, this feature is also known as digital optical monitoring (DOM). You can check the physical or operational status of an SFP module via the SFP
Module Information page. This page shows the operational status, such as the transceiver type, speed, wavelength, optical output power, optical input power, temperature, laser bias current and transceiver supply voltage in real time. You can also use the hyperlink of port no. to check the statistics on a speficic interface. The SFP Module Information screen in Figure 4-4-4 appears.
Figure 4-4-4: SFP Module Information for Switch page Screenshot
The page includes the following fields:
Object
• Type
• Speed
Description
Display the type of current SFP module, the possible types are:
10GBASE-SR
10GBASE-LR
1000BASE-SX
1000BASE-LX
100BASE-FX
Display the spedd of current SFP module, the speed value or description is get from the SFP module. Different vendors SFP modules might shows different speed information.
• Wave Length(nm)
Display the wavelength of current SFP module, the wavelength value is get from the SFP module. Use this column to check if the wavelength values of two nodes are the matched while the fiber connection is failed.
• Distance(m)
• Temperature(C)
– SFP DDM Module Only
Display the supports distance of current SFP module, the distance value is get from the SFP module.
Display the temperature of current SFP DDM module, the temperature value is get from the SFP DDM module.
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Buttons
• Voltage(V)
– SFP DDM Module Only
• Current(mA)
– SFP DDM Module Only
• TX power(dBm)
Display the voltage of current SFP DDM module, the voltage value is get from the
SFP DDM module.
Display the Ampere of current SFP DDM module, the Ampere value is get from the SFP DDM module.
Display the TX power of current SFP DDM module, the TX power value is get
– SFP DDM Module Only
• RX power(dBm)
– SFP DDM Module Only
from the SFP DDM module.
Display the RX power of current SFP DDM module, the RX power value is get from the SFP DDM module.
SFP Monitor Event Alert: send trap
Warning Temperature: degrees C
Check SFP Monitor Event Alert box; it will be in accordance with your warning temperature setting and allows users to record message out via SNMP Trap.
Auto-refresh : Check this box to enable an automatic refresh of the page at regular intervals.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
: Click to refresh the page immediately.
4.4.5 Port Mirror
Configure port Mirroring on this page. This function provide to monitoring network traffic that forwards a copy of each incoming or outgoing packet from one port of a network Switch to another port where the packet can be studied. It enables the manager to keep close track of switch performance and alter it if necessary.
• To debug network problems, selected traffic can be copied, or mirrored, to a mirror port where a frame analyzer can be attached to analyze the frame flow.
• The Managed Switch can unobtrusively mirror traffic from any port to a monitor port. You can then attach a protocol analyzer or RMON probe to this port to perform traffic analysis and verify connection integrity.
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Figure 4-4-7: Port Mirror Application
The traffic to be copied to the mirror port is selected as follows:
•
All frames received on a given port (also known as ingress or source mirroring).
•
All frames transmitted on a given port (also known as egress or destination mirroring).
Mirror Port Configuration
The Port Mirror screen in Figure 4-4-8 appears.
Figure 4-4-8: Mirror Configuration page Screenshot
The page includes the following fields:
Object
• Port to mirror on
Description
Frames from ports that have either source (rx) or destination (tx) mirroring enabled are mirrored to this port. Disabled disables mirroring.
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•
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The logical port for the settings contained in the same row.
Select mirror mode.
■ Rx only: Frames received at this port are mirrored to the mirroring port. Frames transmitted are not mirrored.
■ Tx only: Frames transmitted from this port are mirrored to the mirroring port. Frames received are not mirrored.
■ Disabled: Neither frames transmitted or frames received are mirrored.
■ Both: Frames received and frames transmitted are mirrored to the mirror port.
For a given port, a frame is only transmitted once. It is therefore not possible to mirror Tx frames on the mirror port. Because of this, mode for the selected mirror port is limited to Disabled or Rx only.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.5 Link Aggregation
Port Aggregation optimizes port usage by linking a group of ports together to form a single Link Aggregated Groups (LAGs). Port
Aggregation multiplies the bandwidth between the devices, increases port flexibility, and provides link redundancy.
Each LAG is composed of ports of the same speed, set to full-duplex operations. Ports in a LAG, can be of different media types
(UTP/Fiber, or different fiber types), provided they operate at the same speed.
Aggregated Links can be assigned manually (Port Trunk) or automatically by enabling Link Aggregation Control Protocol
(LACP) on the relevant links.
Aggregated Links are treated by the system as a single logical port. Specifically, the Aggregated Link has similar port attributes to a non-aggregated port, including auto-negotiation, speed, Duplex setting, etc.
The device supports the following Aggregation links :
Static LAGs (Port Trunk) – Force aggregared selected ports to be a trunk group.
Link Aggregation Control Protocol (LACP) LAGs - LACP LAG negotiate Aggregated Port links with other LACP ports located on a different device. If the other device ports are also LACP ports, the devices establish a LAG between them.
Figure 4-5-1: Link Aggregation
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The Link Aggregation Control Protocol (LACP) provides a standardized means for exchanging information between Partner
Systems that require high speed redundant links. Link aggregation lets you group up to eight consecutive ports into a single dedicated connection. This feature can expand bandwidth to a device on the network. LACP operation requires full-duplex mode, more detail information refer to the IEEE 802.3ad standard.
Port link aggregations can be used to increase the bandwidth of a network connection or to ensure fault recovery. Link aggregation lets you group up to 4 consecutive ports into a single dedicated connection between any two the Switch or other
Layer 2 switches. However, before making any physical connections between devices, use the Link aggregation Configuration menu to specify the link aggregation on the devices at both ends. When using a port link aggregation, note that:
• The ports used in a link aggregation must all be of the same media type (RJ45, 100 Mbps fiber).
• The ports that can be assigned to the same link aggregation have certain other restrictions (see below).
• Ports can only be assigned to one link aggregation.
• The ports at both ends of a connection must be configured as link aggregation ports.
• None of the ports in a link aggregation can be configured as a mirror source port or a mirror target port.
• All of the ports in a link aggregation have to be treated as a whole when moved from/to, added or deleted from a VLAN.
• The Spanning Tree Protocol will treat all the ports in a link aggregation as a whole.
• Enable the link aggregation prior to connecting any cable between the switches to avoid creating a data loop.
• Disconnect all link aggregation port cables or disable the link aggregation ports before removing a port link aggregation to avoid creating a data loop.
It allows a maximum of 10 ports to be aggregated at the same time. The Managed Switch support Gigabit Ethernet ports (up to 5 groups). If the group is defined as a LACP static link aggregationing group, then any extra ports selected are placed in a standby mode for redundancy if one of the other ports fails. If the group is defined as a local static link aggregationing group, then the number of ports must be the same as the group member ports.
The aggregation code ensures that frames belonging to the same frame flow (for example, a TCP connection) are always forwarded on the same link aggregation member port. Reording of frames within a flow is therefore not possible. The aggregation code is based on the following information:
• Source MAC
• Destination MAC
• Source and destination IPv4 address.
• Source and destination TCP/UDP ports for IPv4 packets
Normally, all 5 contributions to the aggregation code should be enabled to obtain the best traffic distribution among the link aggregation member ports. Each link aggregation may consist of up to 10 member ports. Any quantity of link aggregation s may be configured for the device (only limited by the quantity of ports on the device.) To configure a proper traffic distribution, the ports within a link aggregation must use the same link speed.
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4.5.1 Static Aggregation
This page is used to configure the Aggregation hash mode and the aggregation group. The aggregation hash mode settings are global, whereas the aggregation group relate to the currently selected stack unit, as reflected by the page header.
Hash Code Contributors
The Static Aggregation screen in Figure 4-5-2 appears.
Figure 4-5-2 : Aggregation Mode Configuration page Screenshot
The page includes the following fields:
Object Description
•
Source MAC Address
The Source MAC address can be used to calculate the destination port for the frame. Check to enable the use of the Source MAC address, or uncheck to disable. By default, Source MAC Address is enabled.
•
Destination MAC
Address
The Destination MAC Address can be used to calculate the destination port for the frame. Check to enable the use of the Destination MAC Address, or uncheck
•
IP Address
to disable. By default, Destination MAC Address is disabled.
The IP address can be used to calculate the destination port for the frame. Check to enable the use of the IP Address, or uncheck to disable. By default, IP Address is enabled.
•
TCP/UDP Port Number
The TCP/UDP port number can be used to calculate the destination port for the frame. Check to enable the use of the TCP/UDP Port Number, or uncheck to disable. By default, TCP/UDP Port Number is enabled.
Static Aggregation Group Configuration
The Aggregation Group Configuration screen in Figure 4-5-3 appears.
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Figure 4-5-3: Aggregation Group Configuration page Screenshot
The page includes the following fields:
.Object
•
Group ID
•
Port Members
Description
Indicates the group ID for the settings contained in the same row. Group ID
"Normal" indicates there is no aggregation. Only one group ID is valid per port.
Each switch port is listed for each group ID. Select a radio button to include a port in an aggregation, or clear the radio button to remove the port from the aggregation. By default, no ports belong to any aggregation group.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.5.2 LACP Configuration
Link Aggregation Control Protocol (LACP) - LACP LAG negotiate Aggregated Port links with other LACP ports located on a different device. LACP allows switches connected to each other to discover automatically whether any ports are member of the same LAG.
This page allows the user to inspect the current LACP port configurations, and possibly change them as well. The LACP port
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settings relate to the currently selected stack unit, as reflected by the page header. The LACP Configuration screen in Figure
4-5-4 appears.
Figure 4-5-4 : LACP Port Configuration page Screenshot
The page includes the following fields:
Object
•
Port
•
LACP Enabled
•
•
• Timeout
•
Key
Role
Priority
Description
The switch port number.
Controls whether LACP is enabled on this switch port. LACP will form an aggregation when 2 or more ports are connected to the same partner. LACP can form max 12 LAGs per switch and 2G LAGs per stack.
The Key value incurred by the port, range 1-65535 . The Auto setting will set the key as appropriate by the physical link speed, 10Mb = 1, 100Mb = 2, 1Gb = 3.
Using the Specific setting, a user-defined value can be entered. Ports with the same Key value can participate in the same aggregation group, while ports with different keys cannot.
The default setting is “Auto”
The Role shows the LACP activity status. The Active will transmit LACP packets each second, while Passive will wait for a LACP packet from a partner (speak if spoken to).
The Timeout controls the period between BPDU transmissions. Fast will transmit
LACP packets each second, while Slow will wait for 30 seconds before sending a
LACP packet.
The Prio controls the priority of the port. If the LACP partner wants to form a larger group than is supported by this device then this parameter will control
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which ports will be active and which ports will be in a backup role. Lower number means greater priority.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.5.3 LACP System Status
This page provides a status overview for all LACP instances. The LACP Status page display the current LACP aggregation
Groups and LACP Port status. The LACP System Status screen in Figure 4-5-5 appears.
Figure 4-5-5: LACP System Status page Screenshot
The page includes the following fields:
Object
•
Aggr ID
•
•
•
Partner System ID
Partner Key
Local Ports
• Partner Priority
•
Last changed
Description
The Aggregation ID associated with this aggregation instance.
For LLAG the id is shown as 'isid:aggr-id' and for GLAGs as 'aggr-id'
The system ID (MAC address) of the aggregation partner.
The Key that the partner has assigned to this aggregation ID.
The priority of the aggregation partner.
The time since this aggregation changed.
Shows which ports are a part of this aggregation for this switch/stack.
The format is: "Switch ID:Port".
Buttons
: Click to refresh the page immediately.
Auto-refresh : Automatic refresh occurs every 3 seconds.
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4.5.4 LACP Port Status
This page provides a status overview for LACP status for all ports. The LACP Port Status screen in Figure 4-5-6 appears.
The page includes the following fields:
Figure 4-5-6: LACP Status page Screenshot
Object
•
•
•
Port
Key
LACP
Buttons
•
Aggr ID
•
Partner System ID
• Partner Port
• Partner Priority
Description
The switch port number.
'Yes' means that LACP is enabled and the port link is up. 'No' means that LACP is not enabled or that the port link is down. 'Backup' means that the port could not join the aggregation group but will join if other port leaves. Meanwhile it's LACP status is disabled.
The key assigned to this port. Only ports with the same key can aggregate together.
The Aggregation ID assigned to this aggregation group.
The partner’s System ID (MAC address).
The partner’s port number connected to this port.
The partner's port priority.
: Click to refresh the page immediately.
Auto-refresh : Automatic refresh occurs every 3 seconds.
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4.5.5 LACP Port Statistics
This page provides an overview for LACP statistics for all ports. The LACP Port Statistics screen in Figure 4-5-7 appears.
The page includes the following fields:
Figure 4-5-7: LACP Statistics page Screenshot
Object
•
Port
•
LACP Received
Description
The switch port number.
Shows how many LACP frames have been sent from each port.
•
LACP Transmitted
•
Discarded
Shows how many LACP frames have been received at each port.
Shows how many unknown or illegal LACP frames have been discarded at each port.
Buttons
Auto-refresh : Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
: Clears the counters for all ports.
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4.6 VLAN
4.6.1 VLAN Overview
A Virtual Local Area Network (VLAN) is a network topology configured according to a logical scheme rather than the physical layout. VLAN can be used to combine any collection of LAN segments into an autonomous user group that appears as a single
LAN. VLAN also logically segment the network into different broadcast domains so that packets are forwarded only between ports within the VLAN. Typically, a VLAN corresponds to a particular subnet, although not necessarily.
VLAN can enhance performance by conserving bandwidth, and improve security by limiting traffic to specific domains.
A VLAN is a collection of end nodes grouped by logic instead of physical location. End nodes that frequently communicate with each other are assigned to the same VLAN, regardless of where they are physically on the network. Logically, a VLAN can be equated to a broadcast domain, because broadcast packets are forwarded to only members of the VLAN on which the broadcast was initiated.
1. No matter what basis is used to uniquely identify end nodes and assign these nodes VLAN membership, packets cannot cross VLAN without a network device performing a routing function between the VLAN.
2. The Managed Switch supports IEEE 802.1Q VLAN. The port untagging function can be used to remove the 802.1 tag from packet headers to maintain compatibility with devices that are tag-unaware..
The Managed Switch's default is to assign all ports to a single 802.1Q VLAN named
DEFAULT_VLAN. As new VLAN is created, the member ports assigned to the new VLAN will be removed from the DEFAULT_ VLAN port member list. The DEFAULT_VLAN has a VID = 1.
This section has the following items:
VLAN Port Configuration
Enables VLAN group
VLAN Membership Status
Displays VLAN membership status
VLAN Port Status
Private VLAN
Displays VLAN port status
Creates/removes primary or community VLANs
Port Isolation
MAC-based VLAN
MAC-based VLAN Status
Protocol-based VLAN
Protocol-based VLAN
Enables/disablse port isolation on port
Configures the MAC-based VLAN entries
Displays MAC-based VLAN entries
Configures the protocol-based VLAN entries
Displays the protocol-based VLAN entries
Membership
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4.6.2 IEEE 802.1Q VLAN
In large networks, routers are used to isolate broadcast traffic for each subnet into separate domains. This Managed Switch provides a similar service at Layer 2 by using VLANs to organize any group of network nodes into separate broadcast domains.
VLANs confine broadcast traffic to the originating group, and can eliminate broadcast storms in large networks. This also provides a more secure and cleaner network environment.
An IEEE 802.1Q VLAN is a group of ports that can be located anywhere in the network, but communicate as though they belong to the same physical segment.
VLANs help to simplify network management by allowing you to move devices to a new VLAN without having to change any physical connections. VLANs can be easily organized to reflect departmental groups (such as Marketing or R&D), usage groups
(such as e-mail), or multicast groups (used for multimedia applications such as videoconferencing).
VLANs provide greater network efficiency by reducing broadcast traffic, and allow you to make network changes without having to update IP addresses or IP subnets. VLANs inherently provide a high level of network security since traffic must pass through a configured Layer 3 link to reach a different VLAN.
This Managed Switch supports the following VLAN features:
Up to 255 VLANs based on the IEEE 802.1Q standard
Port overlapping, allowing a port to participate in multiple VLANs
End stations can belong to multiple VLANs
Passing traffic between VLAN-aware and VLAN-unaware devices
Priority tagging
■ IEEE 802.1Q Standard
IEEE 802.1Q (tagged) VLAN are implemented on the Switch. 802.1Q VLAN require tagging, which enables them to span the entire network (assuming all switches on the network are IEEE 802.1Q-compliant).
VLAN allow a network to be segmented in order to reduce the size of broadcast domains. All packets entering a VLAN will only be forwarded to the stations (over IEEE 802.1Q enabled switches) that are members of that VLAN, and this includes broadcast, multicast and unicast packets from unknown sources.
VLAN can also provide a level of security to your network. IEEE 802.1Q VLAN will only deliver packets between stations that are members of the VLAN. Any port can be configured as either tagging or untagging.:
The untagging feature of IEEE 802.1Q VLAN allows VLAN to work with legacy switches that don't recognize VLAN tags in packet headers.
The tagging feature allows VLAN to span multiple 802.1Q-compliant switches through a single physical connection and allows Spanning Tree to be enabled on all ports and work normally.
Some relevant terms:
- Tagging - The act of putting 802.1Q VLAN information into the header of a packet.
- Untagging - The act of stripping 802.1Q VLAN information out of the packet header.
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■ 802.1Q VLAN Tags
The figure below shows the 802.1Q VLAN tag. There are four additional octets inserted after the source MAC address. Their presence is indicated by a value of 0x8100 in the Ether Type field. When a packet's Ether Type field is equal to 0x8100, the packet carries the IEEE 802.1Q/802.1p tag. The tag is contained in the following two octets and consists of 3 bits of user priority,
1 bit of Canonical Format Identifier (CFI - used for encapsulating Token Ring packets so they can be carried across Ethernet backbones), and 12 bits of VLAN ID (VID). The 3 bits of user priority are used by 802.1p. The VID is the VLAN identifier and is used by the 802.1Q standard. Because the VID is 12 bits long, 4094 unique VLAN can be identified.
The tag is inserted into the packet header making the entire packet longer by 4 octets. All of the information originally contained in the packet is retained.
802.1Q Tag
Preamble Destination
Address
6 bytes
User Priority CFI
VLAN ID (VID)
TPID (Tag Protocol Identifier)
2 bytes
3 bits 1 bit
2 bytes
12 bits
TCI (Tag Control Information)
Source
Address
6 bytes
VLAN TAG
4 bytes
Ethernet
Type
2 bytes
Data FCS
46-1500 bytes 4 bytes
The Ether Type and VLAN ID are inserted after the MAC source address, but before the original Ether Type/Length or Logical
Link Control. Because the packet is now a bit longer than it was originally, the Cyclic Redundancy Check (CRC) must be recalculated.
Adding an IEEE802.1Q Tag
Dest. Addr. Src. Addr. Length/E. type Data Old CRC
Original Ethernet
Dest. Addr. Src. Addr.
E. type Tag
Length/E. type Data New CRC
New Tagged Packet
Priority CFI VLAN ID
■ Port VLAN ID
Packets that are tagged (are carrying the 802.1Q VID information) can be transmitted from one 802.1Q compliant network device to another with the VLAN information intact. This allows 802.1Q VLAN to span network devices (and indeed, the entire network – if all network devices are 802.1Q compliant).
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Every physical port on a switch has a PVID. 802.1Q ports are also assigned a PVID, for use within the switch. If no VLAN are defined on the switch, all ports are then assigned to a default VLAN with a PVID equal to 1. Untagged packets are assigned the
PVID of the port on which they were received. Forwarding decisions are based upon this PVID, in so far as VLAN are concerned.
Tagged packets are forwarded according to the VID contained within the tag. Tagged packets are also assigned a PVID, but the
PVID is not used to make packet forwarding decisions, the VID is.
Tag-aware switches must keep a table to relate PVID within the switch to VID on the network. The switch will compare the VID of a packet to be transmitted to the VID of the port that is to transmit the packet. If the two VID are different the switch will drop the packet. Because of the existence of the PVID for untagged packets and the VID for tagged packets, tag-aware and tag-unaware network devices can coexist on the same network.
A switch port can have only one PVID, but can have as many VID as the switch has memory in its VLAN table to store them.
Because some devices on a network may be tag-unaware, a decision must be made at each port on a tag-aware device before packets are transmitted – should the packet to be transmitted have a tag or not? If the transmitting port is connected to a tag-unaware device, the packet should be untagged. If the transmitting port is connected to a tag-aware device, the packet should be tagged.
■ Default VLANs
The Switch initially configures one VLAN, VID = 1, called "default." The factory default setting assigns all ports on the Switch to the "default". As new VLAN are configured in Port-based mode, their respective member ports are removed from the "default."
■ Assigning Ports to VLANs
Before enabling VLANs for the switch, you must first assign each port to the VLAN group(s) in which it will participate. By default all ports are assigned to VLAN 1 as untagged ports. Add a port as a tagged port if you want it to carry traffic for one or more
VLANs, and any intermediate network devices or the host at the other end of the connection supports VLANs. Then assign ports on the other VLAN-aware network devices along the path that will carry this traffic to the same VLAN(s), either manually or dynamically using GVRP. However, if you want a port on this switch to participate in one or more VLANs, but none of the intermediate network devices nor the host at the other end of the connection supports VLANs, then you should add this port to the VLAN as an untagged port.
VLAN-tagged frames can pass through VLAN-aware or VLAN-unaware network interconnection devices, but the VLAN tags should be stripped off before passing it on to any end-node host that does not support VLAN tagging.
■ VLAN Classification
When the switch receives a frame, it classifies the frame in one of two ways. If the frame is untagged, the switch assigns the frame to an associated VLAN (based on the default VLAN ID of the receiving port). But if the frame is tagged, the switch uses the tagged VLAN ID to identify the port broadcast domain of the frame.
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■ Port Overlapping
Port overlapping can be used to allow access to commonly shared network resources among different VLAN groups, such as file servers or printers. Note that if you implement VLANs which do not overlap, but still need to communicate, you can connect them by enabled routing on this switch.
■ Untagged VLANs
Untagged (or static) VLANs are typically used to reduce broadcast traffic and to increase security. A group of network users assigned to a VLAN form a broadcast domain that is separate from other VLANs configured on the switch. Packets are forwarded only between ports that are designated for the same VLAN. Untagged VLANs can be used to manually isolate user groups or subnets.
4.6.3 VLAN Port Configuration
This page is used for configuring the Managed Switch port VLAN. The VLAN per Port Configuration page contains fields for managing ports that are part of a VLAN. The port default VLAN ID (PVID) is configured on the VLAN Port Configuration page. All untagged packets arriving to the device are tagged by the ports PVID.
Understand nomenclature of the Switch
■ IEEE 802.1Q Tagged and Untagged
Every port on an 802.1Q compliant switch can be configured as tagged or untagged.
• Tagged:
Ports with tagging enabled will put the VID number, priority and other VLAN information into the header of all packets that flow into those ports. If a packet has previously been tagged, the port will not alter the packet, thus keeping the VLAN information intact. The VLAN information in the tag can then be used by other 802.1Q compliant devices on the network to make packet-forwarding decisions.
• Untagged:
Ports with untagging enabled will strip the 802.1Q tag from all packets that flow into those ports. If the packet doesn't have an 802.1Q VLAN tag, the port will not alter the packet. Thus, all packets received by and forwarded by an untagging port will have no 802.1Q VLAN information. (Remember that the PVID is only used internally within the Switch). Untagging is used to send packets from an 802.1Q-compliant network device to a non-compliant network device.
Frame Income
Frame Leave
Income Frame is tagged
Leave port is tagged Frame remains tagged
Income Frame is untagged
Tag is inserted
Leave port is untagged Tag is removed Frame remain untagged
Table 4-6-1: Ingress / Egress Port with VLAN VID Tag / Untag Table
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■ IEEE 802.1Q Tunneling (Q-in-Q)
IEEE 802.1Q Tunneling (QinQ) is designed for service providers carrying traffic for multiple customers across their networks.
QinQ tunneling is used to maintain customer-specific VLAN and Layer 2 protocol configurations even when different customers use the same internal VLAN IDs. This is accomplished by inserting Service Provider VLAN (SPVLAN) tags into the customer’s frames when they enter the service provider’s network, and then stripping the tags when the frames leave the network.
A service provider’s customers may have specific requirements for their internal VLAN IDs and number of VLANs supported.
VLAN ranges required by different customers in the same service-provider network might easily overlap, and traffic passing through the infrastructure might be mixed. Assigning a unique range of VLAN IDs to each customer would restrict customer configurations, require intensive processing of VLAN mapping tables, and could easily exceed the maximum VLAN limit of
4096.
The Managed Switch supports multiple VLAN tags and can therefore be used in MAN applications as a provider bridge, aggregating traffic from numerous independent customer LANs into the MAN (Metro Access Network) space. One of the purposes of the provider bridge is to recognize and use VLAN tags so that the VLANs in the MAN space can be used independent of the customers’ VLANs. This is accomplished by adding a VLAN tag with a MAN-related VID for frames entering the MAN. When leaving the MAN, the tag is stripped and the original VLAN tag with the customer-related VID is again available.
This provides a tunneling mechanism to connect remote costumer VLANs through a common MAN space without interfering with the VLAN tags. All tags use EtherType 0x8100 or 0x88A8, where 0x8100 is used for customer tags and 0x88A8 are used for service provider tags.
In cases where a given service VLAN only has two member ports on the switch, the learning can be disabled for the particular
VLAN and can therefore rely on flooding as the forwarding mechanism between the two ports. This way, the MAC table requirements is reduced.
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Global VLAN Configuration
The Global VLAN Configuration screen in Figure 4-6-1 appears.
Figure 4-6-1 : Global VLAN Configuration Screenshot
The page includes the following fields:
Object
•
Allowed Access
VLANs
Description
This field shows the allowed Access VLANs, it only affects ports configured as
Access ports. Ports in other modes are members of all VLANs specified in the
Allowed VLANs field.
By default, only VLAN 1 is enabled. More VLANs may be created by using a list syntax where the individual elements are separated by commas. Ranges are specified with a dash separating the lower and upper bound.
The following example will create VLANs 1, 10, 11, 12, 13, 200, and 300:
1,10-13,200,300
. Spaces are allowed in between the delimiters.
• Ethertype for Custom
S-ports
This field specifies the ethertype/TPID (specified in hexadecimal) used for
Custom S-ports. The setting is in force for all ports whose Port Type is set to
S-Custom-Port.
Port VLAN Configuration
The VLAN Port Configuration screen in Figure 4-6-2 appears.
Figure 4-6-2 : Port VLAN Configuration Screenshot
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The page includes the following fields:
Object
•
Port
• Mode
Access
Trunk
Hybrid
•
Port VLAN
Description
This is the logical port number for this row.
Access ports are normally used to connect to end stations. Dynamic features like
Voice VLAN may add the port to more VLANs behind the scenes. Access ports have the following characteristics:
•
Member of exactly one VLAN, the Port VLAN (Access VLAN), which by default is 1
•
Accepts untagged and C-tagged frames
•
Discards all frames that are not classified to the Access VLAN
•
On egress all frames classified to the Access VLAN are transmitted untagged. Other (dynamically added VLANs) are transmitted tagged
Trunk ports can carry traffic on multiple VLANs simultaneously, and are normally used to connect to other switches. Trunk ports have the following characteristics:
•
•
By default, a trunk port is member of all VLANs (1-4095)
The VLANs that a trunk port is member of may be limited by the use of
Allowed VLANs
•
Frames classified to a VLAN that the port is not a member of are discarded
•
By default, all frames but frames classified to the Port VLAN (a.k.a.
Native VLAN) get tagged on egress. Frames classified to the Port
VLAN do not get C-tagged on egress
•
Egress tagging can be changed to tag all frames, in which case only tagged frames are accepted on ingress
Hybrid ports resemble trunk ports in many ways, but adds additional port configuration features. In addition to the characteristics described for trunk ports, hybrid ports have these abilities:
•
Can be configured to be VLAN tag unaware, C-tag aware, S-tag aware, or S-custom-tag aware
•
•
Ingress filtering can be controlled
Ingress acceptance of frames and configuration of egress tagging can be configured independently
Determines the port's VLAN ID (PVID). Allowed VLANs are in the range 1 through 4095, default being 1.
■ On ingress, frames get classified to the Port VLAN if the port is configured as
VLAN unaware, the frame is untagged, or VLAN awareness is enabled on the port, but the frame is priority tagged (VLAN ID = 0).
■ On egress, frames classified to the Port VLAN do not get tagged if Egress
Tagging configuration is set to untag Port VLAN.
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•
•
Port Type
Ingress Filtering
• Ingress Acceptance
The Port VLAN is called an "Access VLAN" for ports in Access mode and Native
VLAN for ports in Trunk or Hybrid mode.
Ports in hybrid mode allow for changing the port type, that is, whether a frame's
VLAN tag is used to classify the frame on ingress to a particular VLAN, and if so, which TPID it reacts on. Likewise, on egress, the Port Type determines the TPID of the tag, if a tag is required.
■
Unaware:
On ingress, all frames, whether carrying a VLAN tag or not, get classified to the Port VLAN, and possible tags are not removed on egress.
■
C-Port:
On ingress, frames with a VLAN tag with TPID = 0x8100 get classified to the VLAN ID embedded in the tag. If a frame is untagged or priority tagged, the frame gets classified to the Port VLAN. If frames must be tagged on egress, they will be tagged with a C-tag.
■
S-Port:
On ingress, frames with a VLAN tag with TPID = 0x8100 or 0x88A8 get classified to the VLAN ID embedded in the tag. If a frame is untagged or priority tagged, the frame gets classified to the Port VLAN. If frames must be tagged on egress, they will be tagged with an S-tag.
■
S-Custom-Port:
On ingress, frames with a VLAN tag with a TPID = 0x8100 or equal to the
Ethertype configured for Custom-S ports get classified to the VLAN ID embedded in the tag. If a frame is untagged or priority tagged, the frame gets classified to the Port VLAN. If frames must be tagged on egress, they will be tagged with the custom S-tag.
Hybrid ports allow for changing ingress filtering. Access and Trunk ports always have ingress filtering enabled.
■
If ingress filtering is enabled (checkbox is checked), frames classified to a
VLAN that the port is not a member of get discarded.
■
If ingress filtering is disabled, frames classified to a VLAN that the port is not a member of are accepted and forwarded to the switch engine.
However, the port will never transmit frames classified to VLANs that it is not a member of.
Hybrid ports allow for changing the type of frames that are accepted on ingress.
■
Tagged and Untagged
Both tagged and untagged frames are accepted.
■
Tagged Only
Only tagged frames are accepted on ingress. Untagged frames are discarded.
■
Untagged Only
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•
Allowed VLANs
•
Forbidden VLANs
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Only untagged frames are accepted on ingress. Tagged frames are discarded.
This option is only available for ports in Hybrid mode. Ports in Trunk and Hybrid mode may control the tagging of frames on egress.
■
Untag Port VLAN
Frames classified to the Port VLAN are transmitted untagged. Other frames are transmitted with the relevant tag.
■
Tag All
All frames, whether classified to the Port VLAN or not, are transmitted with a tag.
■
Untag All
All frames, whether classified to the Port VLAN or not, are transmitted without a tag.
Ports in Trunk and Hybrid mode may control which VLANs they are allowed to become members of. The field's syntax is identical to the syntax used in the
Enabled VLANs field.
By default, a Trunk or Hybrid port will become member of all VLANs, and is therefore set to 1-4095. The field may be left empty, which means that the port will not become member of any VLANs.
A port may be configured to never be member of one or more VLANs. This is particularly useful when dynamic VLAN protocols like MVRP and GVRP must be prevented from dynamically adding ports to VLANs. The trick is to mark such
VLANs as forbidden on the port in question. The syntax is identical to the syntax used in the Enabled VLANs field.
By default, the field is left blank, which means that the port may become a member of all possible VLANs.
The port must be a member of the same VLAN as the Port VLAN ID.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.6.4 VLAN Membership Status
This page provides an overview of membership status for VLAN users. The VLAN Membership Status screen in Figure 4-6-4 appears.
Figure 4-6-4: VLAN Membership Status for Static User page Screenshot
The page includes the following fields:
Object
•
VLAN User
•
Port Members
•
VLAN Membership
Description
A VLAN User is a module that uses services of the VLAN management functionality to configure VLAN memberships and VLAN port configuration such as PVID, UVID. Currently we support following VLAN :
- Admin : This is reffered as static.
- NAS : NAS provides port-based authentication, which involves communications between a Supplicant, Authenticator, and an Authentication
Server.
- GVRP : GVRP (GARP VLAN Registration Protocol or Generic VLAN
Registration Protocol) is a protocol that facilitates control of virtual local area networks (VLANs) within a larger network .
- Voice VLAN : Voice VLAN is a VLAN configured specially for voice traffic typically originating from IP phones.
-
MVR : MVR is used to eliminate the need to duplicate multicast traffic for subscribers in each VLAN. Multicast traffic for all channels is sent only on a single (multicast) VLAN.
A row of check boxes for each port is displayed for each VLAN ID.
If a port is included in a VLAN, an image will be displayed.
If a port is included in a Forbidden port list, an image will be displayed.
If a port is included in a Forbidden port list and dynamic VLAN user register
VLAN on same Forbidden port, then conflict port will be displayed as conflict port.
The VLAN Membership Status page shall show the current VLAN port members for all VLANs configured by a selected VLAN User (selection shall be allowed by a Combo Box). When ALL VLAN Users are selected, it shall show this
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information for all the VLAN Users, and this is by default. VLAN membership allows the frames classified to the VLAN ID to be forwarded on the respective
VLAN member ports.
Buttons
: Select VLAN Users from this drop down list.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
: Updates the table starting from the first entry in the VLAN Table, i.e. the entry with the lowest VLAN ID.
: Updates the table, starting with the entry after the last entry currently displayed.
4.6.5 VLAN Port Status
This page provides VLAN Port Staus. The VLAN Port Status screen in Figure 4-6-5 appears.
Figure 4-6-5: VLAN Port Status for Static User page Screenshot
The page includes the following fields:
Object
• Port
• Port Type
Description
The logical port for the settings contained in the same row.
Show the VLAN Awareness for the port.
If VLAN awareness is enabled, the tag is removed from tagged frames received on the port. VLAN tagged frames are classified to the VLAN ID in the tag.
If VLAN awareness is disabled, all frames are classified to the Port VLAN ID and
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• Ingress Filtering
• Frame Type
• Port VLAN ID
• Tx Tag
• Untagged VLAN ID
• Conflicts tags are not removed.
Show the ingress filtering for a port. This parameter affects VLAN ingress processing. If ingress filtering is enabled and the ingress port is not a member of the classified VLAN of the frame, the frame is discarded.
Shows whether the port accepts all frames or only tagged frames. This parameter affects VLAN ingress processing. If the port only accepts tagged frames, untagged frames received on that port are discarded.
Shows the PVID setting for the port.
Shows egress filtering frame status whether tagged or untagged.
Shows UVID (untagged VLAN ID). Port's UVID determines the packet's behavior at the egress side.
Shows status of Conflicts whether exists or Not. When a Volatile VLAN User requests to set VLAN membership or VLAN port configuration, the following conflicts can occur:
Functional Conflicts between feature.
Conflicts due to hardware limitation.
Direct conflict between user modules.
Buttons
: Select VLAN Users from this drop down list.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
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4.6.6 Port Isolation
Overview
When a VLAN is configured to be a private VLAN, communication between ports within that VLAN can be prevented. Two application examples are provided in this section:
• Customers connected to an ISP can be members of the same VLAN, but they are not allowed to communicate with each other within that VLAN.
• Servers in a farm of web servers in a Demilitarized Zone (DMZ) are allowed to communicate with the outside world and with database servers on the inside segment, but are not allowed to communicate with each other
For private VLANs to be applied, the switch must first be configured for standard VLAN operation When this is in place, one or more of the configured VLANs can be configured as private VLANs. Ports in a private VLAN fall into one of these two groups:
Promiscuous ports
— Ports from which traffic can be forwarded to all ports in the private VLAN
— Ports which can receive traffic from all ports in the private VLAN
Isolated ports
— Ports from which traffic can only be forwarded to promiscuous ports in the private VLAN
— Ports which can receive traffic from only promiscuous ports in the private VLAN
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The configuration of promiscuous and isolated ports applies to all private VLANs. When traffic comes in on a promiscuous port in a private VLAN, the VLAN mask from the VLAN table is applied. When traffic comes in on an isolated port, the private VLAN mask is applied in addition to the VLAN mask from the VLAN table. This reduces the ports to which forwarding can be done to just the promiscuous ports within the private VLAN.
This page is used for enabling or disabling port isolation on ports in a Private VLAN. A port member of a VLAN can be isolated to other isolated ports on the same VLAN and Private VLAN. The Port Isolation screen in Figure 4-6-7 appears.
Figure 4-6-7: Port Isolation Configuration page Screenshot
The page includes the following fields:
Object
• Port Members
Description
A check box is provided for each port of a private VLAN. When checked, port isolation is enabled on that port. When unchecked, port isolation is disabled on that port.
By default, port isolation is disabled on all ports.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
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4.6.7 VLAN setting example:
Separate VLAN
802.1Q VLAN Trunk
Port Isolate
4.6.7.1 Two Separate 802.1Q VLANs
The diagram shows how the Managed Switch handle Tagged and Untagged traffic flow for two VLANs. VLAN Group 2 and
VLAN Group 3 are separated VLAN. Each VLAN isolate network traffic so only members of the VLAN receive traffic from the same VLAN members. The screen in Figure 4-6-8 appears and Table 4-6-9 describes the port configuration of the Managed
Switches.
Figure 4-6-8: Two Separate VLANs Diagram
VLAN Group
VLAN Group 1
VLAN Group 2
VLAN Group 3
VID
1
2
3
Untagged Members
Port-7 ~ Port-28
Port-1,Port-2
Port-4,Port-5
The scenario is described as follows:
Untagged packet entering VLAN 2
Table 4-1: VLAN and Port Configuration
Tagged Members
N/A
Port-3
Port-6
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1.
While [PC-1] transmit an untagged packet enters Port-1, the Managed Switch will tag it with a VLAN Tag=2.
[PC-2] and [PC-3] will received the packet through Port-2 and Port-3.
2.
[PC-4],[PC-5] and [PC-6] received no packet.
3.
While the packet leaves Port-2, it will be stripped away it tag becoming an untagged packet.
4.
While the packet leaves Port-3, it will keep as a tagged packet with VLAN Tag=2.
Tagged packet entering VLAN 2
5.
While [PC-3] transmit a tagged packet with VLAN Tag=2 enters Port-3, [PC-1] and [PC-2] will received the packet through Port-1 and Port-2.
6.
While the packet leaves Port-1 and Port-2, it will be stripped away it tag becoming an untagged packet.
Untagged packet entering VLAN 3
1. While [PC-4] transmit an untagged packet enters Port-4, the switch will tag it with a VLAN Tag=3. [PC-5] and
[PC-6] will received the packet through Port-5 and Port-6.
2. While the packet leaves Port-5, it will be stripped away it tag becoming an untagged packet.
3. While the packet leaves Port-6, it will keep as a tagged packet with VLAN Tag=3.
For this example, VLAN Group 1 just set as default VLAN, but only focus on VLAN 2 and VLAN 3 traffic flow
Setup steps
1. Add VLAN Group
Add two VLANs – VLAN 2 and VLAN 3
Type 1-3 in Allowed Access VLANs column, the 1-3 is including VLAN1 and 2 and 3.
Figure 4-6-9: Add VLAN 2 and VLAN 3
2. Assign VLAN Member and PVID for each port:
VLAN 2 : Port-1,Port-2 and Port-3
VLAN 3 : Port-4, Port-5 and Port-6
VLAN 1 : All other ports – Port-7~Port-28
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Figure 4-6-10: Change Port VLAN of Port 1~3 to be VLAN2 and Port VLAN of Port 4~6 to be VLAN3
3. Enable VLAN Tag for specific ports
Link Type: Port-3 (VLAN-2) and Port-6 (VLAN-3)
Change Port 3 Mode as Trunk, Selects Egress Tagging as Tag All and Types 2 in the Allowed VLANs column.
Change Port 6 Mode as Trunk and Selects Egress Tagging as Tag All and Types 3 in the Allowed VLANs column.
The Per Port VLAN configuration in Figure 4-6-11 appears.
Figure 4-6-11: Check VLAN 2 and 3 Members on VLAN Membership page
4.6.7.2 VLAN Trunking between two 802.1Q aware switches
The most cases are used for “Uplink” to other switches. VLANs are separated at different switches, but they need to access with other switches within the same VLAN group. The screen in Figure 4-6-12 appears.
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Figure 4-6-12: VLAN Trunking Diagram
Setup steps
1. Add VLAN Group
Add two VLANs – VLAN 2 and VLAN 3
Type 1-3 in Allowed Access VLANs column, the 1-3 is including VLAN1 and 2 and 3.
Figure 4-6-13: Add VLAN 2 and VLAN 3
2. Assign VLAN Member and PVID for each port :
VLAN 2 : Port-1,Port-2 and Port-3
VLAN 3 : Port-4, Port-5 and Port-6
VLAN 1 : All other ports – Port-7~Port-48
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Figure 4-6-14: Changes Port VLAN of Port 1~3 to be VLAN2 and Port VLAN of Port 4~6 to be VLAN3
For the VLAN ports connecting to the hosts, please refer to 4.6.10.1 examples. The following steps will focus on the VLAN
Trunk port configuration.
1. Specify Port-7 to be the 802.1Q VLAN Trunk port.
2. Assign Port-7 to both VLAN 2 and VLAN 3 at the VLAN Member configuration page.
3. Define a VLAN 1 as a “Public Area” that overlapping with both VLAN 2 members and VLAN 3 members.
4. Assign the VLAN Trunk Port to be the member of each VLAN – which wants to be aggregated. For this example, add Port-7 to be VLAN 2 and VLAN 3 member port.
5. Specify Port-7 to be the 802.1Q VLAN Trunk port, and the Trunking port must be a Tagged port while egress. The Port-7 configuration is shown in Figure 4-6-15.
Figure 4-6-15: VLAN Overlap Port Setting & VLAN 1 – The Public Area Member Assign
That is, although the VLAN 2 members: Port-1 to Port-3 and VLAN 3 members: Port-4 to Port-6 also belongs to VLAN 1. But with different PVID settings, packets form VLAN 2 or VLAN 3 is not able to access to the other VLAN.
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6. Repeat Steps 1 to 6, set up the VLAN Trunk port at the partner switch and add more VLANs to join the VLAN trunk, repeat
Steps 1 to 3 to assign the Trunk port to the VLANs.
4.6.7.3 Port Isolate
The diagram shows how the Managed Switch handles isolated and promiscuous ports, and the each PC is not able to access the isolated port of each other’s PCs. But they all need to access with the same server/AP/Printer. This section will show you how to configure the port for the server – that could be accessed by each isolated port.
Setup steps
1. Assign Port Mode
Set Port-1~Port-4 in Isolate port.
Set Port5 and Port-6 in Promiscuous port. The screen in Figure 4-6-16 appears.
Figure 4-6-17: The Configuration of Isolated and Promiscuous Port
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4.6.8 MAC-based VLAN
The MAC-based VLAN enties can be configured here. This page allows for adding and deleting MAC-based VLAN entries and assigning the entries to different ports. This page shows only static entries. The MAC-based VLAN screen in Figure 4-6-18 appears.
Figure 4-6-18: MAC-based VLAN Membership Configuration page Screenshot
The page includes the following fields:
Object
• Delete
• MAC Address
• VLAN ID
• Port Members
• Adding a New
MAC-based VLAN
Description
To delete a MAC-based VLAN entry, check this box and press save. The entry will be deleted in the stack.
Indicates the MAC address.
Indicates the VLAN ID.
A row of check boxes for each port is displayed for each MAC-based VLAN entry.
To include a port in a MAC-based VLAN, check the box. To remove or exclude the port from the MAC-based VLAN, make sure the box is unchecked. By default, no ports are members, and all boxes are unchecked.
Click “Add New Entry” to add a new MAC-based VLAN entry. An empty row is added to the table, and the MAC-based VLAN entry can be configured as needed. Any unicast MAC address can be configured for the MAC-based VLAN entry. No broadcast or multicast MAC addresses are allowed. Legal values for a
VLAN ID are 1 through 4095.
The MAC-based VLAN entry is enabled when you click on "Save". A MAC-based
VLAN without any port members will be deleted when you click "Save".
The “Delete” button can be used to undo the addition of new MAC-based VLANs.
Buttons
: Click to add a new MAC-based VLAN entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
: Updates the table starting from the first entry in the MAC-based VLAN Table.
: Updates the table, starting with the entry after the last entry currently displayed.
4.6.9 IP Subnet-based VLAN
The IP subnet-based VLAN enties can be configured here. This page allows for adding, updating and deleting IP subnet-based
VLAN entries and assigning the entries to different ports. This page shows only static entries. The IP-based VLAN screen in
Figure 4-6-19 appears.
Figure 4-6-19 Protocol to Group Mapping Table page screenshot
The page includes the following fields:
Object
• Delete
• VCE ID
• IP Address
• Mask Length
• VLAN ID
• Port Members
Description
To delete a Protocol to Group Name map entry, check this box. The entry will be deleted on the switch during the next Save.
Indicates the index of the entry. It is user configurable. It's value ranges from
0-256. If a VCE ID is 0, application will auto-generate the VCE ID for that entry.
Deletion and lookup of IP subnet-based VLAN are based on VCE ID.
Indicates the IP address.
Indicates the network mask length.
Indicates the VLAN ID. VLAN ID can be changed for the existing entries.
A row of check boxes for each port is displayed for each IP subnet-based VLAN entry. To include a port in a IP subnet-based VLAN, check the box. To remove or
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• Add New Entry exclude the port from the IP subnet-based VLAN, make sure the box is unchecked. By default, no ports are members, and all boxes are unchecked.
Click “Add New Entry” to add a new IP subnet-based VLAN entry. An empty row is added to the table, and the IP subnet-based VLAN entry can be configured as needed. Any IP address/mask can be configured for the IP subnet-based VLAN entry. Legal values for a VLAN ID are 1 through 4095.
The IP subnet-based VLAN entry is enabled when you click on "Save". The
“Delete: button can be used to undo the addition of new IP subnet-based VLANs.
Buttons
: Click to add a new entry in mapping table.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
4.6.10 Protocol-based VLAN
This page allows you to add new protocols to Group Name (unique for each Group) mapping entries as well as allow you to see and delete already mapped entries for the switch. The Protocol-based VLAN screen in Figure 4-6-20 appears.
Figure 4-6-20: Protocol to Group Mapping Table page Screenshot
The page includes the following fields:
Object
• Delete
• Frame Type
Description
To delete a Protocol to Group Name map entry, check this box. The entry will be deleted on the switch during the next Save.
Frame Type can have one of the following values:
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• Value
1. Ethernet
2. LLC
3. SNAP
Note: On changing the Frame type field, valid value of the following text field will vary depending on the new frame type you selected.
Valid value that can be entered in this text field depends on the option selected from the preceding Frame Type selection menu.
Below is the criteria for three different Frame Types:
1. For Ethernet: Values in the text field when Ethernet is selected as a
Frame Type is called etype. Valid values for etype ranges from
0x0600-0xffff
2. For LLC: Valid value in this case is comprised of two different sub-values. a. DSAP: 1-byte long string (0x00-0xff) b. SSAP: 1-byte long string (0x00-0xff)
Buttons
3. For SNAP: Valid value in this case also is comprised of two different sub-values. a. OUI: OUI (Organizationally Unique Identifier) is value in format of xx-xx-xx where each pair (xx) in string is a hexadecimal value ranges from 0x00-0xff. b. PID: If the OUI is hexadecimal 000000, the protocol ID is the
Ethernet type (EtherType) field value for the protocol running on top of SNAP; if the OUI is an OUI for a particular organization, the protocol ID is a value assigned by that organization to the protocol running on top of SNAP.
In other words, if value of OUI field is 00-00-00 then value of PID will be etype (0x0600-0xffff) and if value of OUI is other than 00-00-00 then valid value of PID will be any value from 0x0000 to 0xffff.
• Group Name
A valid Group Name is a unique 16-character long string for every entry which consists of a combination of alphabets (a-z or A-Z) and integers(0-9).
Note: special character and underscore(_) are not allowed.
• Adding a New Group to
VLAN mapping entry
Click “Add New Entry”to add a new entry in mapping table. An empty row is added to the table; Frame Type, Value and the Group Name can be configured as needed.
The “Delete” button can be used to undo the addition of new entry.
: Click to add a new entry in mapping table.
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: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
4.6.11 Protocol-based VLAN Membership
This page allows you to map an already configured Group Name to a VLAN for the switch. The Group Name to VLAN Mapping
Table screen in Figure 4-6-21 appears.
Figure 4-6-21: Group Name to VLAN Mapping Table page Screenshot
The page includes the following fields:
Object
• Delete
Description
To delete a Group Name to VLAN map entry, check this box. The entry will be deleted on the switch during the next Save
• Group Name
A valid Group Name is a string of all most 16 characters which consists of a combination of alphabets (a-z or A-Z) and integers(0-9), no special character is allowed. Whichever Group name you try map to a VLAN must be present in
Protocol to Group mapping table and must not be preused by any other existing mapping entry on this page.
• VLAN ID
Indicates the ID to which Group Name will be mapped. A valid VLAN ID ranges from 1-4095.
• Port Members
A row of check boxes for each port is displayed for each Group Name to VLAN ID mapping. To include a port in a mapping, check the box. To remove or exclude the port from the mapping, make sure the box is unchecked. By default, no ports are members, and all boxes are unchecked.
• Adding a New Group to
Click “Add New Entry” to add a new entry in mapping table. An empty row is
VLAN mapping entry
added to the table, the Group Name, VLAN ID and port members can be configured as needed. Legal values for a VLAN ID are 1 through 4095.
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The “Delete” button can be used to undo the addition of new entry.
Buttons
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
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4.7 Spanning Tree Protocol
4.7.1 Theory
The Spanning Tree protocol can be used to detect and disable network loops, and to provide backup links between switches, bridges or routers. This allows the switch to interact with other bridging devices in your network to ensure that only one route exists between any two stations on the network, and provide backup links which automatically take over when a primary link goes down. The spanning tree algorithms supported by this switch include these versions:
STP – Spanning Tree Protocol (IEEE 802.1D)
RSTP – Rapid Spanning Tree Protocol (IEEE 802.1w)
MSTP – Multiple Spanning Tree Protocol (IEEE 802.1s)
The IEEE 802.1D Spanning Tree Protocol and IEEE 802.1w Rapid Spanning Tree Protocol allow for the blocking of links between switches that form loops within the network. When multiple links between switches are detected, a primary link is established. Duplicated links are blocked from use and become standby links. The protocol allows for the duplicate links to be used in the event of a failure of the primary link. Once the Spanning Tree Protocol is configured and enabled, primary links are established and duplicated links are blocked automatically. The reactivation of the blocked links (at the time of a primary link failure) is also accomplished automatically without operator intervention.
This automatic network reconfiguration provides maximum uptime to network users. However, the concepts of the Spanning
Tree Algorithm and protocol are a complicated and complex subject and must be fully researched and understood. It is possible to cause serious degradation of the performance of the network if the Spanning Tree is incorrectly configured. Please read the following before making any changes from the default values.
The Switch STP performs the following functions:
Creates a single spanning tree from any combination of switching or bridging elements.
Creates multiple spanning trees – from any combination of ports contained within a single switch, in user specified groups.
Automatically reconfigures the spanning tree to compensate for the failure, addition, or removal of any element in the tree.
Reconfigures the spanning tree without operator intervention.
Bridge Protocol Data Units
For STP to arrive at a stable network topology, the following information is used:
The unique switch identifier
The path cost to the root associated with each switch port
The port identifier
STP communicates between switches on the network using Bridge Protocol Data Units (BPDUs). Each BPDU contains the following information:
The unique identifier of the switch that the transmitting switch currently believes is the root switch
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The path cost to the root from the transmitting port
The port identifier of the transmitting port
The switch sends BPDUs to communicate and construct the spanning-tree topology. All switches connected to the LAN on which the packet is transmitted will receive the BPDU. BPDUs are not directly forwarded by the switch, but the receiving switch uses the information in the frame to calculate a BPDU, and, if the topology changes, initiates a BPDU transmission.
The communication between switches via BPDUs results in the following:
One switch is elected as the root switch
The shortest distance to the root switch is calculated for each switch
A designated switch is selected. This is the switch closest to the root switch through which packets will be forwarded to the root.
A port for each switch is selected. This is the port providing the best path from the switch to the root switch.
Ports included in the STP are selected.
Creating a Stable STP Topology
It is to make the root port a fastest link. If all switches have STP enabled with default settings, the switch with the lowest MAC address in the network will become the root switch. By increasing the priority (lowering the priority number) of the best switch,
STP can be forced to select the best switch as the root switch.
When STP is enabled using the default parameters, the path between source and destination stations in a switched network might not be ideal. For instance, connecting higher-speed links to a port that has a higher number than the current root port can cause a root-port change.
STP Port States
The BPDUs take some time to pass through a network. This propagation delay can result in topology changes where a port that transitioned directly from a Blocking state to a Forwarding state could create temporary data loops. Ports must wait for new network topology information to propagate throughout the network before starting to forward packets. They must also wait for the packet lifetime to expire for BPDU packets that were forwarded based on the old topology. The forward delay timer is used to allow the network topology to stabilize after a topology change. In addition, STP specifies a series of states a port must transition through to further ensure that a stable network topology is created after a topology change.
Each port on a switch using STP exists is in one of the following five states:
Blocking – the port is blocked from forwarding or receiving packets
Listening – the port is waiting to receive BPDU packets that may tell the port to go back to the blocking state
Learning – the port is adding addresses to its forwarding database, but not yet forwarding packets
Forwarding – the port is forwarding packets
Disabled – the port only responds to network management messages and must return to the blocking state first
A port transitions from one state to another as follows:
From initialization (switch boot) to blocking
From blocking to listening or to disabled
From listening to learning or to disabled
From learning to forwarding or to disabled
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Figure 4-7-1: STP Port State Transitions
You can modify each port state by using management software. When you enable STP, every port on every switch in the network goes through the blocking state and then transitions through the states of listening and learning at power up. If properly configured, each port stabilizes to the forwarding or blocking state. No packets (except BPDUs) are forwarded from, or received by, STP enabled ports until the forwarding state is enabled for that port.
2. STP Parameters
STP Operation Levels
The Switch allows for two levels of operation: the switch level and the port level. The switch level forms a spanning tree consisting of links between one or more switches. The port level constructs a spanning tree consisting of groups of one or more ports. The STP operates in much the same way for both levels.
On the switch level, STP calculates the Bridge Identifier for each switch and then sets the Root
Bridge and the Designated Bridges.
On the port level, STP sets the Root Port and the Designated Ports.
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The following are the user-configurable STP parameters for the switch level:
Parameter
Bridge Identifier(Not user configurable except by setting priority below)
Priority
Description Default Value
A combination of the User-set priority and the switch’s MAC address.
The Bridge Identifier consists of two parts: a 16-bit priority and a 48-bit Ethernet MAC address 32768 + MAC
A relative priority for each switch – lower numbers give a higher priority and a greater chance of a given switch being elected as the root bridge
32768 + MAC
32768
Hello Time
Maximum Age Timer
The length of time between broadcasts of the hello message by the switch
2 seconds
Measures the age of a received BPDU for a port and ensures that the BPDU is discarded
20 seconds when its age exceeds the value of the maximum age timer.
15 seconds
Forward Delay Timer
The amount time spent by a port in the learning and listening states waiting for a
BPDU that may return the port to the blocking state.
The following are the user-configurable STP parameters for the port or port group level:
Variable Description
Port Priority
A relative priority for each port –lower numbers give a higher priority and a greater chance of a given port being elected as the root port
Port Cost
A value used by STP to evaluate paths –
STP calculates path costs and selects the path with the minimum cost as the active path
Default Value
128
200,000-100Mbps Fast Ethernet ports
20,000-1000Mbps Gigabit Ethernet ports
0 - Auto
Default Spanning-Tree Configuration
Feature
Enable state
Port priority
Port cost
Bridge Priority
Default Value
STP disabled for all ports
128
0
32,768
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User-Changeable STA Parameters
The Switch’s factory default setting should cover the majority of installations. However, it is advisable to keep the default settings as set at the factory; unless, it is absolutely necessary. The user changeable parameters in the Switch are as follows:
Priority – A Priority for the switch can be set from 0 to 65535. 0 is equal to the highest Priority.
Hello Time – The Hello Time can be from 1 to 10 seconds. This is the interval between two transmissions of BPDU packets sent by the Root Bridge to tell all other Switches that it is indeed the Root Bridge. If you set a Hello Time for your Switch, and it is not the Root Bridge, the set Hello Time will be used if and when your Switch becomes the Root Bridge.
The Hello Time cannot be longer than the Max. Age; otherwise, a configuration error will occur.
Max. Age – The Max Age can be from 6 to 40 seconds. At the end of the Max Age, if a BPDU has still not been received from the Root Bridge, your Switch will start sending its own BPDU to all other Switches for permission to become the Root Bridge. If it turns out that your Switch has the lowest Bridge Identifier, it will become the Root Bridge.
Forward Delay Timer – The Forward Delay can be from 4 to 30 seconds. This is the time any port on the
Switch spends in the listening state while moving from the blocking state to the forwarding state.
Observe the following formulas when setting the above parameters:
Max. Age _ 2 x (Forward Delay - 1 second)
Max. Age _ 2 x (Hello Time + 1 second)
Port Priority – A Port Priority can be from 0 to 240. The lower the number, the greater the probability the port will be chosen as the Root Port.
Port Cost – A Port Cost can be set from 0 to 200000000. The lower the number, the greater the probability the port will be chosen to forward packets.
3. Illustration of STP
A simple illustration of three switches connected in a loop is depicted in the below diagram. In this example, you can anticipate some major network problems if the STP assistance is not applied.
If switch A broadcasts a packet to switch B, switch B will broadcast it to switch C, and switch C will broadcast it to back to switch
A and so on. The broadcast packet will be passed indefinitely in a loop, potentially causing a network failure. In this example,
STP breaks the loop by blocking the connection between switch B and C. The decision to block a particular connection is based on the STP calculation of the most current Bridge and Port settings.
Now, if switch A broadcasts a packet to switch C, then switch C will drop the packet at port 2 and the broadcast will end there.
Setting-up STP using values other than the defaults, can be complex. Therefore, you are advised to keep the default factory settings and STP will automatically assign root bridges/ports and block loop connections. Influencing STP to choose a particular switch as the root bridge using the Priority setting, or influencing STP to choose a particular port to block using the Port Priority and Port Cost settings is, however, relatively straight forward.
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Figure 4-7-2: Before Applying the STA Rules
In this example, only the default STP values are used.
Figure 4-7-3: After Applying the STA Rules
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The switch with the lowest Bridge ID (switch C) was elected the root bridge, and the ports were selected to give a high port cost between switches B and C. The two (optional) Gigabit ports (default port cost = 20,000) on switch A are connected to one
(optional) Gigabit port on both switch B and C. The redundant link between switch B and C is deliberately chosen as a 100 Mbps
Fast Ethernet link (default port cost = 200,000). Gigabit ports could be used, but the port cost should be increased from the default to ensure that the link between switch B and switch C is the blocked link.
4.7.2 STP System Configuration
This page allows you to configure STP system settings. The settings are used by all STP Bridge instances in the Switch or
Switch Stack. The Managed Switch support the following Spanning Tree protocols:
‧ Compatiable -- Spanning Tree Protocol (STP):Provides a single path between end stations, avoiding and eliminating loops.
‧ Normal -- Rapid Spanning Tree Protocol (RSTP) : Detects and uses of network topologies that provide faster spanning tree convergence, without creating forwarding loops.
‧ Extension – Multiple Spanning Tree Protocol (MSTP) : Defines an extension to RSTP to further develop the usefulness of virtual LANs (VLANs). This "Per-VLAN" Multiple Spanning Tree Protocol configures a separate
Spanning Tree for each VLAN group and blocks all but one of the possible alternate paths within each Spanning
Tree.
The STP System Configuration screen in Figure 4-7-4 appears.
Figure 4-7-4: STP Bridge Configuration page Screenshot
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The page includes the following fields:
Basic Settings
Object
•
Protocol Version
• Bridge Priority
•
Forward Delay
•
Max Age
• Maximum Hop Count
•
Transmit Hold Count
Description
The STP protocol version setting. Valid values are:
STP (IEEE 802.1D Spanning Tree Protocol)
RSTP (IEEE 802.2w Rapid Spanning Tree Protocol)
MSTP (IEEE 802.1s Multiple Spanning Tree Protocol)
Controls the bridge priority. Lower numeric values have better priority. The bridge priority plus the MSTI instance number, concatenated with the 6-byte MAC address of the switch forms a Bridge Identifier.
For MSTP operation, this is the priority of the CIST. Otherwise, this is the priority of the STP/RSTP bridge.
The delay used by STP Bridges to transition Root and Designated Ports to
Forwarding (used in STP compatible mode). Valid values are in the range 4 to 30 seconds
-Default: 15
-Minimum: The higher of 4 or [(Max. Message Age / 2) + 1]
-Maximum: 30
The maximum age of the information transmitted by the Bridge when it is the
Root Bridge. Valid values are in the range 6 to 40 seconds.
-Default: 20
-Minimum: The higher of 6 or [2 x (Hello Time + 1)].
-Maximum: The lower of 40 or [2 x (Forward Delay -1)]
This defines the initial value of remaining Hops for MSTI information generated at the boundary of an MSTI region. It defines how many bridges a root bridge can distribute its BPDU information. Valid values are in the range 6 to 40 hops.
The number of BPDU's a bridge port can send per second. When exceeded, transmission of the next BPDU will be delayed. Valid values are in the range 1 to
10 BPDU's per second.
Advanced Settings
Object
•
Edge Port BPDU
Description
Control whether a port explicitly configured as Edge will transmit and receive
Filtering
BPDUs.
•
Edge Port BPDU Guard
Control whether a port explicitly configured as Edge will disable itself upon reception of a BPDU. The port will enter the error-disabled state, and will be removed from the active topology.
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• Port Error Recovery
•
Port Error Recovery
Timeout
Control whether a port in the error-disabled state automatically will be enabled after a certain time. If recovery is not enabled, ports have to be disabled and re-enabled for normal STP operation. The condition is also cleared by a system reboot.
The time that has to pass before a port in the error-disabled state can be enabled. Valid values are between 30 and 86400 seconds (24 hours).
The Managed Switch implements the Rapid Spanning Protocol as the default spanning tree protocol. When selecting “Compatibles” mode, the system uses the RSTP (802.1w) to be compatible and to co-work with another STP (802.1D)’s BPDU control packet.
Buttons
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
4.7.3 Bridge Status
This page provides a status overview for all STP bridge instances. The displayed table contains a row for each STP bridge instance, where the column displays the following information: The Bridge Status screen in Figure 4-7-5 appears.
The page includes the following fields:
Figure 4-7-5: STP Bridge Status page Screenshot
Object
•
MSTI
•
Bridge ID
•
Root ID
•
Root Port
• Root Cost
Description
The Bridge Instance. This is also a link to the STP Detailed Bridge Status.
The Bridge ID of this Bridge instance.
The Bridge ID of the currently elected root bridge.
The switch port currently assigned the root port role.
Root Path Cost. For the Root Bridge this is zero. For all other Bridges, it is the sum of the Port Path Costs on the least cost path to the Root Bridge.
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• Topology Flag
The current state of the Topology Change Flag for this Bridge instance.
• Topology Change Last
The time since last Topology Change occurred.
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
4.7.4 CIST Port Configuration
This page allows the user to inspect the current STP CIST port configurations, and possibly change them as well. The CIST Port
Configuration screen in Figure 4-7-6 appears.
Figure 4-7-6 : STP CIST Port Configuration page Screenshot
The page includes the following fields:
Object
•
Port
•
STP Enabled
Description
The switch port number of the logical STP port.
Controls whether RSTP is enabled on this switch port.
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•
Path Cost
•
Priority
• AdminEdge
• AutoEdge
• Restricted Role
• Restricted TCN
•
BPDU Guard
• Point-to-point
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Controls the path cost incurred by the port. The Auto setting will set the path cost as appropriate by the physical link speed, using the 802.1D recommended values. Using the Specific setting, a user-defined value can be entered. The path cost is used when establishing the active topology of the network. Lower path cost ports are chosen as forwarding ports in favor of higher path cost ports.
Valid values are in the range 1 to 200000000.
Controls the port priority. This can be used to control priority of ports having identical port cost. (See above).
Default: 128
Range: 0-240, in steps of 16
Controls whether the operEdge flag should start as being set or cleared. (The initial operEdge state when a port is initialized).
Controls whether the bridge should enable automatic edge detection on the bridge port. This allows operEdge to be derived from whether BPDU's are received on the port or not.
If enabled, causes the port not to be selected as Root Port for the CIST or any
MSTI, even if it has the best spanning tree priority vector. Such a port will be selected as an Alternate Port after the Root Port has been selected. If set, it can cause lack of spanning tree connectivity. It can be set by a network administrator to prevent bridges external to a core region of the network influence the spanning tree active topology, possibly because those bridges are not under the full control of the administrator. This feature is also known as Root Guard.
If enabled, causes the port not to propagate received topology change notifications and topology changes to other ports. If set it can cause temporary loss of connectivity after changes in a spanning tree's active topology as a result of persistently incorrect learned station location information. It is set by a network administrator to prevent bridges external to a core region of the network, causing address flushing in that region, possibly because those bridges are not under the full control of the administrator or the physical link state of the attached LANs transits frequently.
If enabled, causes the port to disable itself upon receiving valid BPDU's. Contrary to the similar bridge setting, the port Edge status does not effect this setting.
A port entering error-disabled state due to this setting is subject to the bridge Port
Error Recovery setting as well.
Controls whether the port connects to a point-to-point LAN rather than a shared medium. This can be automatically determined, or forced either true or false.
Transitions to the forwarding state is faster for point-to-point LANs than for shared media.
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Buttons
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
By default, the system automatically detects the speed and duplex mode used on each port, and configures the path cost according to the values shown below. Path cost “0” is used to indicate auto-configuration mode. When the short path cost method is selected and the default path cost recommended by the IEEE 8021w standard exceeds 65,535, the default is set to
65,535.
Port Type
Ethernet
IEEE 802.1D-1998
50-600
IEEE 802.1w-2001
200,000-20,000,000
Fast Ethernet
10-60
Gigabit Ethernet
3-10
20,000-2,000,000
2,000-200,000
Table 4-7-1: Recommended STP Path Cost Range
Port Type
Ethernet
Fast Ethernet
Gigabit Ethernet
Link Type IEEE 802.1D-1998 IEEE 802.1w-2001
Half Duplex
Full Duplex
Trunk
Half Duplex
Full Duplex
Trunk
100
95
90
19
18
15
Full Duplex
Trunk
4
3
Table 4-7-2: Recommended STP Path Costs
2,000,000
1,999,999
1,000,000
200,000
100,000
50,000
10,000
5,000
Port Type Link Type IEEE 802.1w-2001
Ethernet
Fast Ethernet
Gigabit Ethernet
Half Duplex
Full Duplex
Trunk
Half Duplex
Full Duplex
Trunk
Full Duplex
Trunk
Table 4-7-3: Default STP Path Costs
2,000,000
1,000,000
500,000
200,000
100,000
50,000
10,000
5,000
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4.7.5 MSTI Priorities
This page allows the user to inspect the current STP MSTI bridge instance priority configurations, and possibly change them as well. The MSTI Priority screen in Figure 4-7-7 appears.
The page includes the following fields:
Figure 4-7-7: MSTI Priority page Screenshot
Object
•
MSTI
• Priority
Description
The bridge instance. The CIST is the default instance, which is always active.
Controls the bridge priority. Lower numerical values have better priority. The bridge priority plus the MSTI instance number, concatenated with the 6-byte MAC address of the switch forms a Bridge Identifier.
Buttons
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
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4.7.6 MSTI Configuration
This page allows the user to inspect the current STP MSTI bridge instance priority configurations, and possibly change them as well. The MSTI Configuration screen in Figure 4-7-8 appears.
Figure 4-7-8: MSTI Configuration page Screenshot
The page includes the following fields:
Configuration Identification
Object
• Configuration Name
Description
The name identifying the VLAN to MSTI mapping. Bridges must share the name and revision (see below), as well as the VLAN-to-MSTI mapping configuration in order to share spanning trees for MSTI's. (Intra-region). The name is at most 32 characters.
• Configuration Revision
The revision of the MSTI configuration named above. This must be an integer between 0 and 65535.
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MSTI Mapping
Object
• MSTI
• VLANs Mapped
Description
The bridge instance. The CIST is not available for explicit mapping, as it will receive the VLANs not explicitly mapped.
The list of VLAN's mapped to the MSTI. The VLANs must be separated with comma and/or space. A VLAN can only be mapped to one MSTI. A unused MSTI should just be left empty. (I.e. not having any VLANs mapped to it.)
Buttons
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
4.7.7 MSTI Ports Configuration
This page allows the user to inspect the current STP MSTI port configurations, and possibly change them as well. A MSTI port is a virtual port, which is instantiated separately for each active CIST (physical) port for each MSTI instance configured and applicable for the port. The MSTI instance must be selected before displaying actual MSTI port configuration options.
This page contains MSTI port settings for physical and aggregated ports. The aggregation settings are stack global. The MSTI
Port Configuration screen in Figure 4-7-9 & Figure 4-7-10 appears.
Figure 4-7-9 : MSTI Port Configuration page Screenshot
The page includes the following fields:
MSTI Port Configuration
Object
• Select MSTI
Description
Select the bridge instance and set more detail configuration.
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Figure 4-7-10 : MST1 MSTI Port Configuration page Screenshot
The page includes the following fields:
MSTx MSTI Port Configuration
Object
• Port
• Path Cost
• Priority
Description
The switch port number of the corresponding STP CIST (and MSTI) port.
Controls the path cost incurred by the port. The Auto setting will set the path cost as appropriate by the physical link speed, using the 802.1D recommended values. Using the Specific setting, a user-defined value can be entered. The path cost is used when establishing the active topology of the network. Lower path cost ports are chosen as forwarding ports in favor of higher path cost ports. Valid values are in the range 1 to 200000000.
Controls the port priority. This can be used to control priority of ports having identical port cost.
Buttons
: Click to set MSTx configuration.
: Click to apply changes.
: Click to undo any changes made locally and revert to previously saved values.
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4.7.8 Port Status
This page displays the STP CIST port status for port physical ports in the currently selected switch.
The STP Port Status screen in Figure 4-7-11 appears.
The page includes the following fields:
Figure 4-7-11: STP Port Status page Screenshot
Object
•
•
•
Port
CIST Role
CIST State
Description
The switch port number of the logical STP port.
The current STP port role of the ICST port. The port role can be one of the following values:
■
AlternatePort
■
BackupPort
■
RootPort
■
DesignatedPort
■
Disable
The current STP port state of the CIST port . The port state can be one of the following values:
■
Disabled
■
Learning
■
Forwarding
The time since the bridge port was last initialized.
• Uptime
Buttons
: Click to refresh the page immediately.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds
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4.7.9 Port Statistics
This page displays the STP port statistics counters for port physical ports in the currently selected switch.
The STP Port Statistics screen in Figure 4-7-12 appears.
The page includes the following fields:
Figure 4-7-12: STP Statistics page Screenshot
Object
•
Port
• MSTP
•
RSTP
Description
The switch port number of the logical RSTP port.
The number of MSTP Configuration BPDU's received/transmitted on the port.
The number of RSTP Configuration BPDU's received/transmitted on the port.
•
•
•
STP
TCN
Discarded Unknown
• Discarded Illegal
The number of legacy STP Configuration BPDU's received/transmitted on the port.
The number of (legacy) Topology Change Notification BPDU's received/transmitted on the port.
The number of unknown Spanning Tree BPDU's received (and discarded) on the port.
The number of illegal Spanning Tree BPDU's received (and discarded) on the port.
Buttons
Auto-refresh : Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
: Clears the counters for all ports.
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4.8 Multicast
4.8.1 IGMP Snooping
The Internet Group Management Protocol (IGMP) lets host and routers share information about multicast groups memberships. IGMP snooping is a switch feature that monitors the exchange of IGMP messages and copies them to the CPU for feature processing. The overall purpose of IGMP Snooping is to limit the forwarding of multicast frames to only ports that are a member of the multicast group.
About the Internet Group Management Protocol (IGMP) Snooping
Computers and network devices that want to receive multicast transmissions need to inform nearby routers that they will become members of a multicast group. The Internet Group Management Protocol (IGMP) is used to communicate this information. IGMP is also used to periodically check the multicast group for members that are no longer active. In the case where there is more than one multicast router on a sub network, one router is elected as the ‘queried’. This router then keeps track of the membership of the multicast groups that have active members. The information received from IGMP is then used to determine if multicast packets should be forwarded to a given sub network or not. The router can check, using IGMP, to see if there is at least one member of a multicast group on a given subnet work. If there are no members on a sub network, packets will not be forwarded to that sub network.
Figure 4-8-1: Multicast Service
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Figure 4-8-2: Multicast Flooding
Figure 4-8-3: IGMP Snooping Multicast Stream Control
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IGMP Versions 1 and 2
Multicast groups allow members to join or leave at any time. IGMP provides the method for members and multicast routers to communicate when joining or leaving a multicast group. IGMP version 1 is defined in RFC 1112. It has a fixed packet size and no optional data. The format of an IGMP packet is shown below:
IGMP Message Format
Octets
0 8 16 31
Type Response Time Checksum
Group Address (all zeros if this is a query)
The IGMP Type codes are shown below:
Type
0x11
Meaning
Membership Query (if Group Address is 0.0.0.0)
0x11
0x16
Specific Group Membership Query (if Group Address is
Present)
Membership Report (version 2)
0x17 Leave a Group (version 2)
0x12 Membership Report (version 1)
IGMP packets enable multicast routers to keep track of the membership of multicast groups, on their respective sub networks.
The following outlines what is communicated between a multicast router and a multicast group member using IGMP.
A host sends an IGMP “report” to join a group
A host will never send a report when it wants to leave a group (for version 1).
A host will send a “leave” report when it wants to leave a group (for version 2).
Multicast routers send IGMP queries (to the all-hosts group address: 224.0.0.1) periodically to see whether any group members exist on their sub networks. If there is no response from a particular group, the router assumes that there are no group members on the network.
The Time-to-Live (TTL) field of query messages is set to 1 so that the queries will not be forwarded to other sub networks.
IGMP version 2 introduces some enhancements such as a method to elect a multicast queried for each LAN, an explicit leave message, and query messages that are specific to a given group.
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The states a computer will go through to join or to leave a multicast group are shown below:
Figure 4-8-4: IGMP State Transitions
IGMP Querier –
A router, or multicast-enabled switch, can periodically ask their hosts if they want to receive multicast traffic. If there is more than one router/switch on the LAN performing IP multicasting, one of these devices is elected “querier” and assumes the role of querying the LAN for group members. It then propagates the service requests on to any upstream multicast switch/router to ensure that it will continue to receive the multicast service.
Multicast routers use this information, along with a multicast routing protocol such as
DVMRP or PIM, to support IP multicasting across the Internet.
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4.8.2 Profile Table
This page provides IPMC Profile related configurations. The IPMC profile is used to deploy the access control on IP multicast streams. It is allowed to create at maximum 64 Profiles with at maximum 128 corresponding rules for each. The Profile Table screen in Figure 4-8-5 appears.
The page includes the following fields:
Figure 4-8-5: IPMC Profile Configuration page
Object
•
Global Profile Mode
• Delete
•
•
•
Profile Name
Rule
Profile Description
Description
Enable/Disable the Global IPMC Profile.
System starts to do filtering based on profile settings only when the global profile mode is enabled.
Check to delete the entry.
The designated entry will be deleted during the next save.
The name used for indexing the profile table.
Each entry has the unique name which is composed of at maximum 16 alphabetic and numeric characters. At least one alphabet must be present.
Additional description, which is composed of at maximum 64 alphabetic and numeric characters, about the profile.
No blank or space characters are permitted as part of description. Use "_" or "-" to separate the description sentence.
When the profile is created, click the edit button to enter the rule setting page of the designated profile. Summary about the designated profile will be shown by clicking the view button. You can manage or inspect the rules of the designated profile by using the following buttons:
: List the rules associated with the designated profile.
: Adjust the rules associated with the designated profile.
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Buttons
: Click to add new IPMC profile. Specify the name and configure the new entry. Click "Save”.
: Click to apply changes
:
Click to undo any changes made locally and revert to previously saved values.
4.8.3 Address Entry
This page provides address range settings used in
IPMC profile
. The address entry is used to specify the address range that will be associated with
IPMC
Profile. It is allowed to create at maximum 128 address entries in the system.
The Profile Table screen in Figure 4-8-6 appears.
Figure 4-8-6: IPMC Profile Address Configuration page
The page includes the following fields:
Object
•
Delete
• Entry Name
•
Start Address
• End Address
Description
Check to delete the entry.
The designated entry will be deleted during the next save.
The name used for indexing the address entry table.
Each entry has the unique name which is composed of at maximum 16 alphabetic and numeric characters. At least one alphabet must be present.
The starting IPv4/IPv6 Multicast Group Address that will be used as an address range.
The ending IPv4/IPv6 Multicast Group Address that will be used as an address range.
Buttons
:
Click to add new address range. Specify the name and configure the addresses. Click "Save
”.
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: Click to apply changes
:
Click to undo any changes made locally and revert to previously saved values.
:
Refreshes the displayed table starting from the input fields.
:
Updates the table starting from the first entry in the IPMC Profile Address Configuration.
:
Updates the table, starting with the entry after the last entry currently displayed.
4.8.4 IGMP Snooping Configuration
This page provides IGMP Snooping related configuration. The IGMP Snooping Configuration screen in Figure 4-8-7 appears.
Figure 4-8-7: IGMP Snooping Configuration page Screenshot
The page includes the following fields:
Object
•
Snooping Enabled
•
Unregistered IPMCv4
Flooding Enabled
Description
Enable the Global IGMP Snooping.
Enable unregistered IPMCv4 traffic flooding.
The flooding control takes effect only when IGMP Snooping is enabled.
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Buttons
• IGMP SSM Range
• Leave Proxy Enable
• Proxy Enable
• Router Port
• Fast Leave
• Throtting
When IGMP Snooping is disabled, unregistered IPMCv4 traffic flooding is always active in spite of this setting.
SSM (Source-Specific Multicast) Range allows the SSM-aware hosts and routers run the SSM service model for the groups in the address range.
Enable IGMP Leave Proxy. This feature can be used to avoid forwarding unnecessary leave messages to the router side.
Enable IGMP Proxy. This feature can be used to avoid forwarding unnecessary join and leave messages to the router side.
Specify which ports act as IGMP router ports. A router port is a port on the
Ethernet switch that leads towards the Layer 3 multicast device or IGMP querier.
The Switch forwards IGMP join or leave packets to an IGMP router port.
Auto:
Select “Auto” to have the Managed Switch automatically uses the port as IGMP Router port if the port receives IGMP query packets.
Fix:
The Managed Switch always uses the specified port as an IGMP
Router port. Use this mode when you connect an IGMP multicast server or IP camera which applied with multicast protocol to the port.
None:
The Managed Switch will not use the specified port as an IGMP
Router port. The Managed Switch will not keep any record of an
IGMP router being connected to this port. Use this mode when you connect other IGMP multicast servers directly on the non-querier
Managed Switch and don’t want the multicast stream to be flooded by uplinking switch throught the port that is connected to the IGMP querier.
Enable the fast leave on the port.
Enable to limit the number of multicast groups to which a switch port can belong.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.8.5 IGMP Snooping VLAN Configuration
Each page shows up to 99 entries from the VLAN table, default being 20, selected through the "entries per page" input field.
When first visited, the web page will show the first 20 entries from the beginning of the VLAN Table. The first displayed will be the one with the lowest VLAN ID found in the VLAN Table.
The "VLAN" input fields allow the user to select the starting point in the VLAN Table. The IGMP Snooping VLAN Configuration screen in Figure 4-8-8 appears.
Figure 4-8-8: IGMP Snooping VLAN Configuration page Screenshot
The page includes the following fields:
Object
•
Delete
Description
Check to delete the entry. The designated entry will be deleted during the next save.
The VLAN ID of the entry.
•
VLAN ID
• IGMP Snooping Enable
Enable the per-VLAN IGMP Snooping. Only up to 32 VLANs can be selected.
• Querier Election
• Querier Address
• Compatibility
Enable the IGMP Querier election in the VLAN. Disable to act as an IGMP
Non-Querier.
Define the IPv4 address as source address used in IP header for IGMP Querier election.
■
When the Querier address is not set, system uses IPv4 management address of the IP interface associated with this VLAN.
■
When the IPv4 management address is not set, system uses the first available IPv4 management address. Otherwise, system uses a pre-defined value.
By default, this value will be 192.0.2.1
Compatibility is maintained by hosts and routers taking appropriate actions depending on the versions of IGMP operating on hosts and routers within a network. The allowed selection is IGMP-Auto, Forced IGMPv1, Forced
IGMPv2, Forced IGMPv3.
Default compatibility value is IGMP-Auto.
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• PRI
• RV
(PRI) Priority of Interface. It indicates the IGMP control frame priority level generated by the system. These values can be used to prioritize different classes of traffic.
The allowed range is 0 (best effort) to 7 (highest), default interface priority value is 0
Robustness Variable. The Robustness Variable allows tuning for the expected packet loss on a network.
Buttons
• QI
• QRI
The allowed range is 1 to 255, default robustness variable value is 2.
Query Interval. The Query Interval is the interval between General Queries sent by the Querier. The allowed range is 1 to 31744 seconds, default query interval is
125 seconds.
Query Response Interval. The Max Response Time used to calculate the Max
Resp Code inserted into the periodic General Queries.
The allowed range is 0 to 31744 in tenths of seconds, default query response interval is 100 in tenths of seconds (10 seconds).
• LLQI (LMQI for IGMP)
Last Member Query Interval. The Last Member Query Time is the time value represented by the Last Member Query Interval, multiplied by the Last Member
Query Count.
• URI
The allowed range is 0 to 31744 in tenths of seconds, default last member query interval is 10 in tenths of seconds (1 second).
Unsolicited Report Interval. The Unsolicited Report Interval is the time between repetitions of a host's initial report of membership in a group.
The allowed range is 0 to 31744 seconds, default unsolicited report interval is 1 second.
: Refreshes the displayed table starting from the "VLAN" input fields.
: Updates the table starting from the first entry in the VLAN Table, i.e. the entry with the lowest VLAN ID.
: Updates the table, starting with the entry after the last entry currently displayed.
: Click to add new IGMP VLAN. Specify the VID and configure the new entry.
Click "Save". The specific IGMP VLAN starts working after the corresponding static VLAN is also created.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.8.6 IGMP Snooping Port Group Filtering
In certain switch applications, the administrator may want to control the multicast services that are available to end users. For example, an IP/TV service based on a specific subscription plan. The IGMP filtering feature fulfills this requirement by restricting access to specified multicast services on a switch port, and IGMP throttling limits the number of simultaneous multicast groups a port can join.
IGMP filtering enables you to assign a profile to a switch port that specifies multicast groups that are permitted or denied on the port. An IGMP filter profile can contain one or more, or a range of multicast addresses; but only one profile can be assigned to a port. When enabled, IGMP join reports received on the port are checked against the filter profile. If a requested multicast group is permitted, the IGMP join report is forwarded as normal. If a requested multicast group is denied, the IGMP join report is dropped.
IGMP throttling sets a maximum number of multicast groups that a port can join at the same time. When the maximum number of groups is reached on a port, the switch can take one of two actions; either “deny” or “replace”. If the action is set to deny, any new IGMP join reports will be dropped. If the action is set to replace, the switch randomly removes an existing group and replaces it with the new multicast group. The IGMP Snooping Port Group Filtering Configuration screen in Figure 4-8-9 appears.
Figure 4-8-9: IGMP Snooping Port Filtering Profile Configuration page Screenshot
The page includes the following fields:
Object
•
Port
• Filtering Profile
Description
The logical port for the settings.
Select the IPMC Profile as the filtering condition for the specific port. Summary about the designated profile will be shown by clicking the view button
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.8.7 IGMP Snooping Status
This page provides IGMP Snooping status. The IGMP Snooping Status screen in Figure 4-8-10 appears.
Figure 4-8-10: IGMP Snooping Status page Screenshot
The page includes the following fields:
Object
•
VLAN ID
•
Querier Version
•
Host Version
•
Querier Status
•
Querier Transmitted
• Querier Received
• V1 Reports Received
• V2 Reports Received
• V3 Reports Received
• V2 Leave Received
• Router Port
• Port
• Status
Description
The VLAN ID of the entry.
Working Querier Version currently.
Working Host Version currently.
Show the Querier status is "ACTIVE" or "IDLE".
The number of Transmitted Querier.
The number of Received Querier.
The number of Received V1 Reports.
The number of Received V2 Reports.
The number of Received V3 Reports.
The number of Received V2 Leave.
Display which ports act as router ports. A router port is a port on the Ethernet switch that leads towards the Layer 3 multicast device or IGMP querier.
Static denotes the specific port is configured to be a router port.
Dynamic denotes the specific port is learnt to be a router port.
Both denote the specific port is configured or learnt to be a router port.
Switch port number.
Indicate whether specific port is a router port or not.
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Buttons
: Click to refresh the page immediately.
: Clears all Statistics counters.
Auto-refresh : Automatic refresh occurs every 3 seconds.
4.8.8 IGMP Group Information
Entries in the IGMP Group Table are shown on this page. The IGMP Group Table is sorted first by VLAN ID, and then by group.
Each page shows up to 99 entries from the IGMP Group table, default being 20, selected through the "entries per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the IGMP Group Table. The "Start from
VLAN", and "group" input fields allow the user to select the starting point in the IGMP Group Table. The IGMP Groups
Information screen in Figure 4-8-11 appears.
Figure 4-8-9: IGMP Snooping Groups Information page Screenshot
The page includes the following fields:
Buttons
Object
•
VLAN ID
• Groups
• Port Members
Description
VLAN ID of the group.
Group address of the group displayed.
Ports under this group.
Auto-refresh : Automatic refresh occurs every 3 seconds.
: Refreshes the displayed table starting from the input fields.
: Updates the table, starting with the first entry in the IGMP Group Table.
: Updates the table, starting with the entry after the last entry currently displayed.
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4.8.9 IGMPv3 Information
Entries in the IGMP SSM Information Table are shown on this page. The IGMP SSM Information Table is sorted first by VLAN ID, then by group, and then by Port No. Diffrent source addresses belong to the same group are treated as single entry.
Each page shows up to 99 entries from the IGMP SSM (Source Specific Multicast) Information table, default being 20, selected through the "entries per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the
IGMP SSM Information Table.
The "Start from VLAN", and "Group" input fields allow the user to select the starting point in the IGMP SSM Information Table.
The IGMPv3 Information screen in Figure 4-8-12 appears.
Figure 4-8-12: IGMP SSM Information page Screenshot
The page includes the following fields:
Buttons
Object
• VLAN ID
• Group
• Port
•
Mode
Description
VLAN ID of the group.
Group address of the group displayed.
Switch port number.
Indicates the filtering mode maintained per (VLAN ID, port number, Group
Address) basis. It can be either Include or Exclude.
• Source Address
IP Address of the source. Currently, system limits the total number of IP source addresses for filtering to be 128.
• Type
Indicates the Type. It can be either Allow or Deny.
• Hardware Filter/Switch
Indicates whether data plane destined to the specific group address from the source IPv4 address could be handled by chip or not.
Auto-refresh : Check this box to enable an automatic refresh of the page at regular intervals.
: Click to refresh the page immediately.
: Updates the table, starting with the first entry in the IGMP Group Table.
: Updates the table, starting with the entry after the last entry currently displayed.
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4.8.10 MLD Snooping Configuration
This page provides MLD Snooping related configuration. The MLD Snooping Configuration screen in Figure 4-8-13 appears.
Figure 4-8-13: MLD Snooping Configuration page Screenshot
The page includes the following fields:
Object
•
Snooping Enabled
•
Unregistered IPMCv6
Flooding enabled
• MLD SSM Range
• Leave Proxy Enable
• Proxy Enable
• Router Port
Description
Enable the Global MLD Snooping.
Enable unregistered IPMCv6 traffic flooding.
The flooding control takes effect only when MLD Snooping is enabled.
When MLD Snooping is disabled, unregistered IPMCv6 traffic flooding is always active in spite of this setting.
SSM (Source-Specific Multicast) Range allows the SSM-aware hosts and routers run the SSM service model for the groups in the address range.
Enable MLD Leave Proxy. This feature can be used to avoid forwarding unnecessary leave messages to the router side.
Enable MLD Proxy. This feature can be used to avoid forwarding unnecessary join and leave messages to the router side.
Specify which ports act as router ports. A router port is a port on the Ethernet switch that leads towards the Layer 3 multicast device or MLD querier.
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Buttons
• Fast Leave
• Throtting
: Click to apply changes
If an aggregation member port is selected as a router port, the whole aggregation will act as a router port. The allowed selection is Auto, Fix, Fone, default compatibility value is Auto.
Enable the fast leave on the port.
Enable to limit the number of multicast groups to which a switch port can belong.
: Click to undo any changes made locally and revert to previously saved values.
4.8.11 MLD Snooping VLAN Configuration
Each page shows up to 99 entries from the VLAN table, default being 20, selected through the "entries per page" input field.
When first visited, the web page will show the first 20 entries from the beginning of the VLAN Table. The first displayed will be the one with the lowest VLAN ID found in the VLAN Table.
The "VLAN" input fields allow the user to select the starting point in the VLAN Table. The MLD Snooping VLAN Configuration screen in Figure 4-8-14 appears.
Figure 4-8-14: IGMP Snooping VLAN Configuration page Screenshot
The page includes the following fields:
Object
Description
• Delete
Check to delete the entry. The designated entry will be deleted during the next save.
The VLAN ID of the entry.
• VLAN ID
• MLD Snooping Enable
Enable the per-VLAN MLD Snooping. Up to 32 VLANs can be selected for MLD
Snooping.
• Querier Election
Enable to join MLD Querier election in the VLAN. Disable to act as a MLD
Non-Querier.
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Buttons
• Compatibility
Compatibility is maintained by hosts and routers taking appropriate actions depending on the versions of MLD operating on hosts and routers within a network. The allowed selection is MLD-Auto, Forced MLDv1, Forced MLDv2, default compatibility value is MLD-Auto.
• PRI
(PRI) Priority of Interface. It indicates the MLD control frame priority level generated by the system. These values can be used to prioritize different classes of traffic. The allowed range is 0 (best effort) to 7 (highest), default interface priority value is 0
• RV
Robustness Variable. The Robustness Variable allows tuning for the expected packet loss on a network. The allowed range is 1 to 255, default robustness variable value is 2.
• QI
• QRI
Query Response Interval. The Max Response Time used to calculate the Max
Resp Code inserted into the periodic General Queries. The allowed range is 0 to
31744 in tenths of seconds, default query response interval is 100 in tenths of seconds (10 seconds).
• LLQI (LMQI for IGMP)
Last Member Query Interval. The Last Member Query Time is the time value represented by the Last Member Query Interval, multiplied by the Last Member
Query Count. The allowed range is 0 to 31744 in tenths of seconds, default last member query interval is 10 in tenths of seconds (1 second).
• URI
Query Interval. The Query Interval is the interval between General Queries sent by the Querier. The allowed range is 1 to 31744 seconds, default query interval is
125 seconds.
Unsolicited Report Interval. The Unsolicited Report Interval is the time between repetitions of a host's initial report of membership in a group. The allowed range is 0 to 31744 seconds, default unsolicited report interval is 1 second.
: Refreshes the displayed table starting from the "VLAN" input fields.
: Updates the table starting from the first entry in the VLAN Table, i.e. the entry with the lowest VLAN ID.
: Updates the table, starting with the entry after the last entry currently displayed.
:Click to add new MLD VLAN. Specify the VID and configure the new entry.
Click "Save". The specific MLD VLAN starts working after the corresponding static VLAN is also created.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.8.12 MLD Snooping Port Group Filtering
In certain switch applications, the administrator may want to control the multicast services that are available to end users. For example, an IP/TV service based on a specific subscription plan. The MLD filtering feature fulfills this requirement by restricting access to specified multicast services on a switch port, and MLD throttling limits the number of simultaneous multicast groups a port can join.
MLD filtering enables you to assign a profile to a switch port that specifies multicast groups that are permitted or denied on the port. A MLD filter profile can contain one or more, or a range of multicast addresses; but only one profile can be assigned to a port. When enabled, MLD join reports received on the port are checked against the filter profile. If a requested multicast group is permitted, the MLD join report is forwarded as normal. If a requested multicast group is denied, the MLD join report is dropped.
MLD throttling sets a maximum number of multicast groups that a port can join at the same time. When the maximum number of groups is reached on a port, the switch can take one of two actions; either “deny” or “replace”. If the action is set to deny, any new MLD join reports will be dropped. If the action is set to replace, the switch randomly removes an existing group and replaces it with the new multicast group. The MLD Snooping Port Group Filtering Configuration screen in Figure 4-8-15 appears.
Figure 4-8-15: MLD Snooping Port Group Filtering Configuration page Screenshot
The page includes the following fields:
Object
• Port
• Filtering Group
Description
The logical port for the settings.
Select the IPMC Profile as the filtering condition for the specific port. Summary about the designated profile will be shown by clicking the view button.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.8.13 MLD Snooping Status
This page provides MLD Snooping status. The IGMP Snooping Status screen in Figure 4-8-16 appears.
Figure 4-8-16: MLD Snooping Status page Screenshot
The page includes the following fields:
Object
•
VLAN ID
•
Querier Version
•
Host Version
•
Querier Status
•
Querier Transmitted
• Querier Received
• V1 Reports Received
• V2 Reports Received
• V1 Leave Received
• Router Port
Description
The VLAN ID of the entry.
Working Querier Version currently.
Working Host Version currently.
Shows the Querier status is "ACTIVE" or "IDLE".
"DISABLE" denotes the specific interface is administratively disabled.
The number of Transmitted Querier.
The number of Received Querier.
The number of Received V1 Reports.
The number of Received V2 Reports.
The number of Received V1 Leaves.
Display which ports act as router ports. A router port is a port on the Ethernet switch that leads towards the Layer 3 multicast device or MLD querier.
Static denotes the specific port is configured to be a router port.
Dynamic denotes the specific port is learnt to be a router port.
Both denote the specific port is configured or learnt to be a router port.
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Buttons
• Port
• Status
Switch port number.
Indicates whether specific port is a router port or not.
: Click to refresh the page immediately.
: Clears all Statistics counters.
Auto-refresh : Automatic refresh occurs every 3 seconds.
4.8.14 MLD Group Information
Entries in the MLD Group Table are shown on this page. The MLD Group Table is sorted first by VLAN ID, and then by group.
Each page shows up to 99 entries from the MLD Group table, default being 20, selected through the "entries per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the MLD Group Table.
The "Start from VLAN", and "group" input fields allow the user to select the starting point in the MLD Group Table. The MLD
Groups Information screen in Figure 4-8-17 appears.
Figure 4-8-17: MLD Snooping Groups Information page Screenshot
The page includes the following fields:
Object
•
VLAN ID
• Groups
• Port Members
Description
VLAN ID of the group.
Group address of the group displayed.
Ports under this group.
Buttons
Auto-refresh : Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
: Updates the table, starting with the first entry in the IGMP Group Table.
: Updates the table, starting with the entry after the last entry currently displayed.
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4.8.15 MLDv2 Information
Entries in the MLD SFM Information Table are shown on this page. The MLD SFM (Source-Filtered Multicast) Information Table also contains the SSM (Source-Specific Multicast) information. This table is sorted first by VLAN ID, then by group, and then by
Port. Different source addresses belong to the same group are treated as single entry. Each page shows up to 99 entries from the MLD SFM Information table, default being 20, selected through the "entries per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the MLD SFM Information Table.
The "Start from VLAN", and "group" input fields allow the user to select the starting point in the MLD SFM Information Table.
The MLDv2 Information screen in Figure 4-8-18 appears.
Figure 4-8-18: MLD SSM Information page Screenshot
The page includes the following fields:
Buttons
Object
• VLAN ID
• Group
• Port
•
Mode
Description
VLAN ID of the group.
Group address of the group displayed.
Switch port number.
Indicates the filtering mode maintained per (VLAN ID, port number, Group
Address) basis. It can be either Include or Exclude.
• Source Address
IP Address of the source. Currently, system limits the total number of IP source addresses for filtering to be 128.
• Type
Indicates the Type. It can be either Allow or Deny.
• Hardware Filter/Switch
Indicates whether data plane destined to the specific group address from the source IPv6 address could be handled by chip or not.
Auto-refresh : Automatic refresh occurs every 3 seconds.
: Refreshes the displayed table starting from the input fields.
: Updates the table starting from the first entry in the MLD SFM Information Table.
: Updates the table, starting with the entry after the last entry currently displayed.
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4.8.16 MVR (Multicast VLAN Registration)
The MVR feature enables multicast traffic forwarding on the Multicast VLANs.
■
In a multicast television application, a PC or a network television or a set-top box can receive the multicast stream.
■
Multiple set-top boxes or PCs can be connected to one subscriber port, which is a switch port configured as an MVR receiver port. When a subscriber selects a channel, the set-top box or PC sends an IGMP/MLD report message to Switch
A to join the appropriate multicast group address.
■
Uplink ports that send and receive multicast data to and from the multicast VLAN are called MVR source ports.
It is allowed to create at maximum 8 MVR VLANs with corresponding channel settings for each Multicast VLAN. There will be totally at maximum 256 group addresses for channel settings.
This page provides MVR related configuration. The MVR screen in Figure 4-8-19 appears.
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Figure 4-8-19: MVR Configuration page Screenshot
The page includes the following fields:
Object
• MVR Mode
• Delete
• MVR VID
• MVR Name
• IGMP Address
Description
Enable/Disable the Global MVR.
The Unregistered Flooding control depends on the current configuration in
IGMP/MLD Snooping.
It is suggested to enable Unregistered Flooding control when the MVR group table is full.
Check to delete the entry. The designated entry will be deleted during the next save.
Specify the Multicast VLAN ID.
Be Caution: MVR source ports are not recommended to be overlapped with management VLAN ports.
MVR Name is an optional attribute to indicate the name of the specific MVR
VLAN. Maximum length of the MVR VLAN Name string is 16. MVR VLAN Name can only contain alphabets or numbers. When the optional MVR VLAN name is given, it should contain at least one alphabet. MVR VLAN name can be edited for the existing MVR VLAN entries or it can be added to the new entries.
Define the IPv4 address as source address used in IP header for IGMP control
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• Mode
• Tagging
• Priority
• LLQI
• Interface Channel
Setting
• Port
• Port Role
• Immediate Leave
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frames. The default IGMP address is not set (0.0.0.0).
When the IGMP address is not set, system uses IPv4 management address of the IP interface associated with this VLAN.
When the IPv4 management address is not set, system uses the first available
IPv4 management address. Otherwise, system uses a pre-defined value. By default, this value will be 192.0.2.1.
Specify the MVR mode of operation. In Dynamic mode, MVR allows dynamic
MVR membership reports on source ports. In Compatible mode, MVR membership reports are forbidden on source ports. The default is Dynamic mode.
Specify whether the traversed IGMP/MLD control frames will be sent as
Untagged or Tagged with MVR VID. The default is Tagged.
Specify how the traversed IGMP/MLD control frames will be sent in prioritized manner. The default Priority is 0.
Define the maximum time to wait for IGMP/MLD report memberships on a receiver port before removing the port from multicast group membership. The value is in units of tenths of a seconds. The range is from 0 to 31744. The default
LLQI is 5 tenths or one-half second.
When the MVR VLAN is created, select the IPMC Profile as the channel filtering condition for the specific MVR VLAN. Summary about the Interface Channel
Profiling (of the MVR VLAN) will be shown by clicking the view button. Profile selected for designated interface channel is not allowed to have overlapped permit group address.
The logical port for the settings.
Configure an MVR port of the designated MVR VLAN as one of the following roles.
Inactive: The designated port does not participate MVR operations.
Source: Configure uplink ports that receive and send multicast data as source ports. Subscribers cannot be directly connected to source ports.
Receiver: Configure a port as a receiver port if it is a subscriber port and should only receive multicast data. It does not receive data unless it becomes a member of the multicast group by issuing IGMP/MLD messages.
Be Caution: MVR source ports are not recommended to be overlapped with management VLAN ports.
Select the port role by clicking the Role symbol to switch the setting.
I indicates Inactive; S indicates Source; R indicates Receiver
The default Role is Inactive.
Enable the fast leave on the port.
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Buttons
: Click to add new MVR VLAN. Specify the VID and configure the new entry. Click "Save"
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.8.17 MVR Status
This page provides MVR status. The MVR Status screen in Figure 4-8-20 appears.
The page includes the following fields:
Figure 4-8-20: MVR Status page Screenshot
Buttons
Object
• VLAN ID
Description
The Multicast VLAN ID.
• IGMP/MLD Queries
Received
• IGMP/MLD Queries
Transmitted
• IGMPv1 Joins
Received
• IGMPv2/MLDv1
Reports Received
• IGMPv3/MLDv2
The number of Received Queries for IGMP and MLD, respectively.
The number of Transmitted Queries for IGMP and MLD, respectively.
The number of Received IGMPv1 Joins.
The number of Received IGMPv2 Joins and MLDv1 Reports, respectively.
The number of Received IGMPv1 Joins and MLDv2 Reports, respectively.
Reports Received
• IGMPv2/MLDv1 Leaves
Received
The number of Received IGMPv2 Leaves and MLDv1 Dones, respectively.
: Click to refresh the page immediately.
: Clears all Statistics counters.
Auto-refresh : Automatic refresh occurs every 3 seconds.
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4.8.18 MVR Groups Information
Entries in the MVR Group Table are shown on this page. The MVR Group Table is sorted first by VLAN ID, and then by group.
Each page shows up to 99 entries from the MVR Group table, default being 20, selected through the "entries per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the MVR Group Table.
The "Start from VLAN", and "group" input fields allow the user to select the starting point in the MVR Group Table. The MVR
Groups Information screen in Figure 4-8-21 appears.
Figure 4-8-21: MVR Groups Information page Screenshot
The page includes the following fields:
Buttons
Object
• VLAN
• Groups
• Port Members
Description
VLAN ID of the group.
Group ID of the group displayed.
Ports under this group.
Auto-refresh : Automatic refresh occurs every 3 seconds.
: Refreshes the displayed table starting from the input fields.
: Updates the table starting from the first entry in the MVR Channels (Groups) Information Table.
: Updates the table, starting with the entry after the last entry currently displayed.
4.8.19 MVR SFM Information
Entries in the MVR SFM Information Table are shown on this page. The MVR SFM (Source-Filtered Multicast) Information
Table also contains the SSM (Source-Specific Multicast) information. This table is sorted first by VLAN ID, then by group, and then by Port. Different source addresses belong to the same group are treated as single entry.
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Each page shows up to 99 entries from the MVR SFM Information Table, default being 20, selected through the "entries per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the MVR SFM Information
Table.
The "Start from VLAN", and "Group Address" input fields allow the user to select the starting point in the MVR SFM Information
Table. The MVR SFM Information screen in Figure 4-8-22 appears.
Figure 4-8-22: MVR SFM Information page Screenshot
The page includes the following fields:
Object
• VLAN ID
• Group
• Port
• Mode
• Source Address
• Type
• Hardware Filter /
Switch
Description
VLAN ID of the group.
Group address of the group displayed.
Switch port number.
Indicates the filtering mode maintained per (VLAN ID, port number, Group
Address) basis. It can be either Include or Exclude.
IP Address of the source. Currently, system limits the total number of IP source addresses for filtering to be 128. When there is no any source filtering address, the text "None" is shown in the Source Address field.
Indicates the Type. It can be either Allow or Deny.
Indicates whether data plane destined to the specific group address from the source IPv4/IPv6 address could be handled by chip or not.
Buttons
Auto-refresh : Automatic refresh occurs every 3 seconds.
: Refreshes the displayed table starting from the input fields.
: Updates the table starting from the first entry in the MVR SFM Information Table.
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4.9 Quality of Service
4.9.1 Understanding QoS
Quality of Service (QoS) is an advanced traffic prioritization feature that allows you to establish control over network traffic. QoS enables you to assign various grades of network service to different types of traffic, such as multi-media, video, protocol-specific, time critical, and file-backup traffic.
QoS reduces bandwidth limitations, delay, loss, and jitter. It also provides increased reliability for delivery of your data and allows you to prioritize certain applications across your network. You can define exactly how you want the switch to treat selected applications and types of traffic. You can use QoS on your system to:
• Control a wide variety of network traffic by:
• Classifying traffic based on packet attributes.
• Assigning priorities to traffic (for example, to set higher priorities to time-critical or business-critical applications).
• Applying security policy through traffic filtering.
• Provide predictable throughput for multimedia applications such as video conferencing or voice over IP by minimizing delay and jitter.
• Improve performance for specific types of traffic and preserve performance as the amount of traffic grows.
• Reduce the need to constantly add bandwidth to the network.
• Manage network congestion.
QoS Terminology
• Classifier－classifies the traffic on the network. Traffic classifications are determined by protocol, application, source, destination, and so on. You can create and modify classifications. The Switch then groups classified traffic in order to schedule them with the appropriate service level.
• DiffServ Code Point (DSCP) － is the traffic prioritization bits within an IP header that are encoded by certain applications and/or devices to indicate the level of service required by the packet across a network.
• Service Level－defines the priority that will be given to a set of classified traffic. You can create and modify service levels.
• Policy－comprises a set of “rules” that are applied to a network so that a network meets the needs of the business. That is, traffic can be prioritized across a network according to its importance to that particular business type.
• QoS Profile－consists of multiple sets of rules (classifier plus service level combinations). The QoS profile is assigned to a port(s).
• Rules－comprises a service level and a classifier to define how the Switch will treat certain types of traffic. Rules are associated with a QoS Profile (see above).
To implement QoS on your network, you need to carry out the following actions:
1.
Define a service level to determine the priority that will be applied to traffic.
2.
Apply a classifier to determine how the incoming traffic will be classified and thus treated by the Switch.
3.
Create a QoS profile which associates a service level and a classifier.
4.
Apply a QoS profile to a port(s).
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4.9.2 Port Policing
This page allows you to configure the Policer settings for all switch ports. The Port Policing screen in Figure 4-9-1 appears.
Figure 4-9-1: QoS Ingress Port Policers page Screenshot
The page includes the following fields:
Object
•
Port
•
Enable
•
Rate
•
•
Unit
Flow Control
Description
The port number for which the configuration below applies.
Controls whether the policer is enabled on this switch port.
Controls the rate for the policer. This value is restricted to 100-1000000 when the
"Unit" is "kbps" or "fps", and it is restricted to 1-3300 when the "Unit" is "Mbps" or "kfps".
The default value is 500.
Controls the unit of measure for the policer rate as kbps, Mbps, fps or kfps .
The default value is "kbps".
If flow control is enabled and the port is in flow control mode, then pause frames are sent instead of discarding frames.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.9.3 Port Classification
This page allows you to configure the basic QoS Ingress Classification settings for all switch ports. The Port Classification screen in Figure 4-9-2 appears.
Figure 4-9-2 : QoS Ingress Port Classification page Screenshot
The page includes the following fields:
Object
• Port
• CoS
• DPL
Description
The port number for which the configuration below applies.
Controls the default class of service.
All frames are classified to a CoS. There is a one to one mapping between CoS, queue and priority. A CoS of 0 (zero) has the lowest priority.
If the port is VLAN aware and the frame is tagged, then the frame is classified to a CoS that is based on the PCP value in the tag as shown below. Otherwise the frame is classified to the default CoS.
PCP value: 0 1 2 3 4 5 6 7
CoS value: 1 0 2 3 4 5 6 7
The classified CoS can be overruled by a QCL entry.
Note: If the default CoS has been dynamically changed, then the actual default
CoS is shown in parentheses after the configured default CoS.
Controls the default drop precedence level.
All frames are classified to a drop precedence level.
If the port is VLAN aware and the frame is tagged, then the frame is classified to a DPL that is equal to the DEI value in the tag. Otherwise the frame is classified
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• PCP
• DEI
• Tag Class. to the default DPL. The classified DPL can be overruled by a QCL entry
Controls the default PCP value.
All frames are classified to a PCP value.
If the port is VLAN aware and the frame is tagged, then the frame is classified to the PCP value in the tag. Otherwise the frame is classified to the default PCP value.
Controls the default DEI value.
All frames are classified to a DEI value.
If the port is VLAN aware and the frame is tagged, then the frame is classified to the DEI value in the tag. Otherwise the frame is classified to the default DEI value.
Shows the classification mode for tagged frames on this port.
Disabled: Use default CoS and DPL for tagged frames.
Enabled: Use mapped versions of PCP and DEI for tagged frames.
Click on the mode in order to configure the mode and/or mapping.
Note: This setting has no effect if the port is VLAN unaware. Tagged frames received on VLAN unaware ports are always classified to the default CoS and DPL.
Click to Enable DSCP Based QoS Ingress Port Classification.
Buttons
•
DSCP Based
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.9.4 Port Scheduler
This page provides an overview of QoS Egress Port Schedulers for all switch ports. The Port Scheduler screen in Figure 4-9-3 appears.
Figure 4-9-3: QoS Egress Port Schedule page Screenshot
The page includes the following fields:
Object
• Port
• Mode
•
Q0 ~ Q5
Description
The logical port for the settings contained in the same row.
Click on the port number in order to configure the schedulers.
For more detail, please refer to chapter 4.9.5.1.
Shows the scheduling mode for this port.
Shows the weight for this queue and port.
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4.9.5 Port Shaping
This page provides an overview of QoS Egress Port Shapers for all switch ports. The Port Shapping screen in Figure 4-9-4 appears.
Figure 4-9-4: QoS Egress Port Shapers page Screenshot
The page includes the following fields:
Object
• Port
• Q0 ~Q7
•
Port
Description
The logical port for the settings contained in the same row.
Click on the port number in order to configure the shapers.
For more detail, please refer to chapter 4.9.5.1.
Shows "disabled" or actual queue shaper rate - e.g. "800 Mbps".
Shows "disabled" or actual port shaper rate - e.g. "800 Mbps".
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4.9.5.1 QoS Egress Port Schedule and Shapers
The Port Scheduler and Shapers for a specific port are configured on this page. The QoS Egress Port Schedule and Shaper sscreen in Figure 4-9-5 appears.
Figure 4-9-5: QoS Egress Port Schedule and Shapers page Screenshot
The page includes the following fields:
Object
• Schedule Mode
Description
Controls whether the scheduler mode is "Strict Priority" or "Weighted" on this switch port.
• Queue Shaper Enable
Controls whether the queue shaper is enabled for this queue on this switch port.
• Queue Shaper Rate
Controls the rate for the queue shaper.
This value is restricted to 100-1000000 when the "Unit" is "kbps", and it is restricted to 1-13200 when the "Unit" is "Mbps".
The default value is 500.
• Queue Shaper Unit
Controls the unit of measure for the queue shaper rate as "kbps" or "Mbps".
The default value is "kbps".
• Queue Shaper Excess
Controls whether the queue is allowed to use excess bandwidth.
• Queue Scheduler
Controls the weight for this queue.
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Buttons
• Queue Scheduler
Percent
• Port Shaper Enable
• Port Shaper Rate
•
Weight
Port Shaper Unit
This value is restricted to 1-100. This parameter is only shown if "Scheduler
Mode" is set to "Weighted".
The default value is "17".
Shows the weight in percent for this queue. This parameter is only shown if
"Scheduler Mode" is set to "Weighted".
Controls whether the port shaper is enabled for this switch port.
Controls the rate for the port shaper.
This value is restricted to 100-1000000 when the "Unit" is "kbps", and it is restricted to 1-13200 when the "Unit" is "Mbps".
The default value is 500.
Controls the unit of measure for the port shaper rate as "kbps" or "Mbps".
The default value is "kbps".
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
: Click to undo any changes made locally and return to the previous page.
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4.9.6 Port Tag Remarking
This page provides an overview of QoS Egress Port Tag Remarking for all switch ports. The Port Tag Remarking screen in
Figure 4-9-6 appears.
Figure 4-9-6: QoS Egress Port Tag Remarking page Screenshot
The page includes the following fields:
Object
• Port
•
Mode
Description
The logical port for the settings contained in the same row.
Click on the port number in order to configure tag remarking.
For more detail, please refer to chapter 4.9.6.1.
Shows the tag remarking mode for this port.
■
Classified: Use classified PCP/DEI values
■
Default: Use default PCP/DEI values.
■
Mapped: Use mapped versions of QoS class and DP level.
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4.9.6.1 QoS Egress Port Tag Remarking
The QoS Egress Port Tag Remarking for a specific port are configured on this page. The QoS Egress Port Tag Remarking screen in Figure 4-9-7 appears.
Figure 4-9-7: QoS Egress Port Tag Remarking page Screenshot
The page includes the following fields:
Buttons
Object
• Mode
Description
Controls the tag remarking mode for this port.
■
Classified: Use classified PCP/DEI values.
■
Default: Use default PCP/DEI values.
■
Mapped: Use mapped versions of QoS class and DP level.
• PCP/DEI Configuration
Controls the default PCP and DEI values used when the mode is set to Default.
•
(QoS class, DP level) to (PCP, DEI) Mapping
Controls the mapping of the classified (QoS class, DP level) to (PCP, DEI) values when the mode is set to Mapped.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.9.7 Port DSCP
This page allows you to configure the basic QoS Port DSCP Configuration settings for all switch ports. The Port DSCP screen in
Figure 4-9-8 appears.
Figure 4-9-8: QoS Port DSCP Configuration page Screenshot
The page includes the following fields:
Object
• Port
• Ingress
Description
The Port column shows the list of ports for which you can configure dscp ingress and egress settings.
In Ingress settings you can change ingress translation and classification settings for individual ports.
There are two configuration parameters available in Ingress:
Translate
Classify
To Enable the Ingress Translation click the checkbox.
• Translate
• Classify
Classification for a port have 4 different values.
Disable: No Ingress DSCP Classification.
DSCP=0: Classify if incoming (or translated if enabled) DSCP is 0.
Selected: Classify only selected DSCP for which classification is enabled as specified in DSCP Translation window for the specific DSCP.
All: Classify all DSCP.
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Port Egress Rewriting can be one of -
Disable: No Egress rewrite.
Enable: Rewrite enable without remapped.
Remap DP Unaware: DSCP from analyzer is remapped and frame is remarked with remapped DSCP value. The remapped DSCP value is always taken from the 'DSCP Translation->Egress Remap DP0' table.
Remap DP Aware: DSCP from analyzer is remapped and frame is remarked with remapped DSCP value. Depending on the DP level of the frame, the remapped DSCP value is either taken from the 'DSCP
Translation->Egress Remap DP0' table or from the 'DSCP
Translation->Egress Remap DP1' table.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.9.8 DSCP-based QoS
This page allows you to configure the basic QoS DSCP-based QoS Ingress Classification settings for all switches. The
DSCP-based QoS screen in Figure 4-9-9 appears.
Figure 4-9-9: DSCP-based QoS Ingress Classification page Screenshot
The page includes the following fields:
Object
• DSCP
• Trust
• QoS Class
•
DPL
Description
Maximum number of support ed DSCP values are 64.
Controls whether a specific DSCP value is trusted. Only frames with trusted
DSCP values are mapped to a specific QoS class and Drop Precedence Level.
Frames with untrusted DSCP values are treated as a non-IP frame.
QoS Class value can be any of (0-7)
Drop Precedence Level (0-1)
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4.9.9 DSCP Translation
This page allows you to configure the basic QoS DSCP Translation settings for all switches. DSCP translation can be done in
Ingress or Egress. The DSCP Translation screen in Figure 4-9-10 appears.
Figure 4-9-10: DSCP Translation page Screenshot
The page includes the following fields:
Object
• DSCP
• Ingress
• Translate
Description
Maximum number of supported DSCP values are 64 and valid DSCP value ranges from 0 to 63.
Ingress side DSCP can be first translated to new DSCP before using the DSCP for QoS class and DPL map.
There are two configuration parameters for DSCP Translation –
■
Translate
■
Classify
DSCP at Ingress side can be translated to any of (0-63) DSCP values.
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• Classify
• Egress
•
Remap DP
•
Remap DP1
Click to enable Classification at Ingress side.
There are the following configurable parameters for Egress side –
Remap DP0 Controls the remapping for frames with DP level 0.
Remap DP1 Controls the remapping for frames with DP level 1.
Select the DSCP value from select menu to which you want to remap. DSCP value ranges form 0 to 63.
Select the DSCP value from select menu to which you want to remap. DSCP value ranges form 0 to 63.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.9.10 DSCP Classification
This page allows you to map DSCP value to a QoS Class and DPL value. The DSCP Classification screen in Figure 4-9-11 appears.
Figure 4-9-11: DSCP Classification page Screenshot
The page includes the following fields:
Object
• QoS Class
Description
Available QoS Class value ranges from 0 to 7. QoS Class (0-7) can be mapped
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to followed parameters.
• DPL
•
DSCP
Actual Drop Precedence Level.
Select DSCP value (0-63) from DSCP menu to map DSCP to corresponding QoS
Class and DPL value
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.9.11 QoS Control List
This page shows the QoS Control List(QCL), which is made up of the QCEs. Each row describes a QCE that is defined. The maximum number of QCEs is 256 on each switch.
Click on the lowest plus sign to add a new QCE to the list. The QoS Control List screen in Figure 4-9-12 appears.
Figure 4-9-12: QoS Control List Configuration page Screenshot
The page includes the following fields:
Object
•
QCE#
• Port
• DMAC
• SMAC
Description
Indicates the index of QCE.
Indicates the list of ports configured with the QCE.
Specify the type of Destination MAC addresses for incoming frame. Possible values are:
■
Any: All types of Destination MAC addresses are allowed.
■
Unicast: Only Unicast MAC addresses are allowed.
■
Multicast: Only Multicast MAC addresses are allowed.
■
Broadcast: Only Broadcast MAC addresses are allowed.
The default value is 'Any'.
Displays the OUI field of Source MAC address, i.e. first three octet (byte) of MAC address.
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• Tag Type
• VID
• PCP
•
• Frame Type
•
DEI
Action
•
Modification Buttons
Indicates tag type. Possible values are:
■
Any: Match tagged and untagged frames.
■
Untagged: Match untagged frames.
■
Tagged: Match tagged frames.
The default value is 'Any'
Indicates (VLAN ID), either a specific VID or range of VIDs. VID can be in the range 1-4095 or 'Any'
Priority Code Point: Valid value PCP are specific(0, 1, 2, 3, 4, 5, 6, 7) or range(0-1, 2-3, 4-5, 6-7, 0-3, 4-7) or 'Any'.
Drop Eligible Indicator: Valid value of DEI can be any of values between 0, 1 or
'Any'.
Indicates the type of frame to look for incoming frames. Possible frame types are:
■
Any: The QCE will match all frame type.
■
Ethernet: Only Ethernet frames (with Ether Type 0x600-0xFFFF) are allowed.
■
LLC: Only (LLC) frames are allowed.
■
SNAP: Only (SNAP) frames are allowed.
■
IPv4: The QCE will match only IPV4 frames.
■
IPv6: The QCE will match only IPV6 frames.
Indicates the classification action taken on ingress frame if parameters configured are matched with the frame's content.
There are three action fields: Class, DPL and DSCP.
■
Class: Classified QoS class.
■
DPL: Classified Drop Precedence Level.
■
DSCP: Classified DSCP value.
You can modify each QCE in the table using the following buttons:
: Inserts a new QCE before the current row.
: Edits the QCE.
: Moves the QCE up the list.
: Moves the QCE down the list.
: Deletes the QCE.
: The lowest plus sign adds a new entry at the bottom of the list of QCL.
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4.9.11.1 QoS Control Entry Configuration
The QCE Configuration screen in Figure 4-9-13 appears.
User’s Manual of SGS-5220 Series
Figure 4-9-13: QCE Configuration page Screenshot
The page includes the following fields:
Object
•
Port Members
•
Key Parameters
Description
Check the checkbox button in case you what to make any port member of the
QCL entry. By default all ports will be checked
Key configuration are described as below:
■
DMAC Type Destination MAC type: possible values are unicast(UC), multicast(MC), broadcast(BC) or 'Any'
■
SMAC Source MAC address: 24 MS bits (OUI) or 'Any'
■
Tag Value of Tag field can be 'Any', 'Untag' or 'Tag'
■
VID Valid value of VLAN ID can be any value in the range 1-4095 or 'Any'; user can enter either a specific value or a range of VIDs
■
PCP Priority Code Point: Valid value PCP are specific(0, 1, 2, 3, 4, 5, 6, 7) or range(0-1, 2-3, 4-5, 6-7, 0-3, 4-7) or 'Any'
■
DEI Drop Eligible Indicator: Valid value of DEI can be any of values between 0, 1 or 'Any'
■
Frame Type Frame Type can have any of the following values
1. Any
2. Ethernet
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• Any
• EtherType
• LLC
• SNAP
• IPv4
• IPv6
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3. LLC
4. SNAP
5. IPv4
6. IPv6
Note: all frame types are explained below.
Allow all types of frames.
Ethernet Type Valid ethernet type can have value within 0x600-0xFFFF or 'Any' but excluding 0x800(IPv4) and 0x86DD(IPv6), default value is 'Any'.
■
SSAP Address Valid SSAP(Source Service Access Point) can vary from
0x00 to 0xFF or 'Any', the default value is 'Any'
■
DSAP Address Valid DSAP(Destination Service Access Point) can vary from 0x00 to 0xFF or 'Any', the default value is 'Any'
■
Control Address Valid Control Address can vary from 0x00 to 0xFF or
'Any', the default value is 'Any'
PID Valid PID(a.k.a ethernet type) can have value within 0x00-0xFFFF or 'Any', default value is 'Any'
■
Protocol IP protocol number: (0-255, TCP or UDP) or 'Any'
■
Source IP Specific Source IP address in value/mask format or 'Any'. IP and
Mask are in the format x.y.z.w where x, y, z, and w are decimal numbers between 0 and 255. When Mask is converted to a 32-bit binary string and read from left to right, all bits following the first zero must also be zero
DSCP Diffserv Code Point value(DSCP): It can be specific value, range of value or 'Any'. DSCP values are in the range 0-63 including BE, CS1-CS7,
EF or AF11-AF43
■
IP Fragment IPv4 frame fragmented option: yes|no|any
■
Sport Source TCP/UDP port:(0-65535) or 'Any', specific or port range applicable for IP protocol UDP/TCP
■
Dport Destination TCP/UDP port:(0-65535) or 'Any', specific or port range applicable for IP protocol UDP/TCP
Protocol IP protocol number: (0-255, TCP or UDP) or 'Any'
Source IP IPv6 source address: (a.b.c.d) or 'Any', 32 LS bits
DSCP Diffserv Code Point value(DSCP): It can be specific value, range of value or 'Any'. DSCP values are in the range 0-63 including BE, CS1-CS7, EF or
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Buttons
•
Action Parameters
AF11-AF43
Sport Source TCP/UDP port:(0-65535) or 'Any', specific or port range applicable for IP protocol UDP/TCP
Dport Destination TCP/UDP port:(0-65535) or 'Any', specific or port range applicable for IP protocol UDP/TCP
Class QoS class: (0-7) or 'Default'.
DPL Valid Drop Precedence Level can be (0-3) or 'Default'.
DSCP Valid DSCP value can be (0-63, BE, CS1-CS7, EF or AF11-AF43) or
'Default'.
'Default' means that the default classified value is not modified by this QCE.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values
: Return to the previous page without saving the configuration change
4.9.12 QCL Status
This page shows the QCL status by different QCL users. Each row describes the QCE that is defined. It is a conflict if a specific
QCE is not applied to the hardware due to hardware limitations. The maximum number of QCEs is 256 on each switch. The
QoS Control List Status screen in Figure 4-9-14 appears.
Figure 4-9-14: QoS Control List Status page Screenshot
The page includes the following fields:
Object Description
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• User
•
•
•
•
QCE#
• Port
Frame Type
Action
Conflict
Indicates the QCL user.
Indicates the index of QCE.
Indicates the list of ports configured with the QCE.
Indicates the type of frame to look for incoming frames. Possible frame types are:
■
Any: The QCE will match all frame type.
■
Ethernet: Only Ethernet frames (with Ether Type 0x600-0xFFFF) are allowed.
■
LLC: Only (LLC) frames are allowed.
■
SNAP: Only (SNAP) frames are allowed.
■
IPv4: The QCE will match only IPV4 frames.
■
IPv6: The QCE will match only IPV6 frames.
Indicates the classification action taken on ingress frame if parameters configured are matched with the frame's content.
There are three action fields: Class, DPL and DSCP.
■
Class: Classified QoS class; if a frame matches the QCE it will be put in the queue.
■
DPL: Drop Precedence Level; if a frame matches the QCE then DP level will set to value displayed under DPL column.
■
DSCP: If a frame matches the QCE then DSCP will be classified with the value displayed under DSCP column.
Displays Conflict status of QCL entries. As H/W resources are shared by multiple applications. It may happen that resources required to add a QCE may not be available, in that case it shows conflict status as 'Yes', otherwise it is always 'No'.
Please note that conflict can be resolved by releasing the H/W resources required to add QCL entry on pressing 'Resolve Conflict' button.
Buttons
: Select the QCL status from this drop down list.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to release the resources required to add QCL entry, in case the conflict status for any QCL entry is 'yes'.
: Click to refresh the page.
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4.9.13 Storm Control Configuration
Storm control for the switch is configured on this page. There is a unicast storm rate control, multicast storm rate control, and a broadcast storm rate control. These only affect flooded frames, i.e. frames with a (VLAN ID, DMAC) pair not present on the MAC
Address table.
The configuration indicates the permitted packet rate for unicast, multicast or broadcast traffic across the switch.
The Storm Control Configuration screen in Figure 4-9-15 appears.
Figure 4-9-15: Storm Control Configuration page Screenshot
The page includes the following fields:
Object
•
Port
•
Enable
• Rate
• Unit
Description
The port number for which the configuration below applies.
Controls whether the storm control is enabled on this switch port.
Controls the rate for the storm control. The default value is 500. This value is restricted to 100-1000000 when the "Unit" is "kbps" or "fps", and it is restricted to
1-13200 when the "Unit" is "Mbps" or "kfps”.
Controls the unit of measure for the storm control rate as kbps, Mbps, fps or kfps . The default value is "kbps".
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.9.14 WRED
This page allows you to configure the Random Early Detection (RED) settings for queue 0 to 5. RED cannot be applied to queue 6 and 7. Through different RED configuration for the queues (QoS classes) it is possible to obtain Weighted Random
Early Detection (WRED) operation between queues. The settings are global for all ports in the switch. The WRED screen in
Figure 4-9-16 appears.
Figure 4-9-16 WRED page screenshot
The page includes the following fields:
Object
• Queue
• Enable
• Min. Threshold
• Max. DP 1
• Max. DP2
• Max. DP3
Description
The queue number (QoS class) for which the configuration below applies.
Controls whether RED is enabled for this queue.
Controls the lower RED threshold. If the average queue filling level is below this threshold, the drop probability is zero.
This value is restricted to 0-100.
Controls the drop probability for frames marked with Drop Precedence Level 1 when the average queue filling level is 100%.
This value is restricted to 0-100.
Controls the drop probability for frames marked with Drop Precedence Level 2 when the average queue filling level is 100%.
This value is restricted to 0-100.
Controls the drop probability for frames marked with Drop Precedence Level 3 when the average queue filling level is 100%.
This value is restricted to 0-100.
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RED Drop Probability Function
The following illustration shows the drop probability function with associated parameters.
Max. DP 1-3 is the drop probability when the average queue filling level is 100%. Frames marked with Drop Precedence Level 0 are never dropped. Min. Threshold is the average queue filling level where the queues randomly start dropping frames. The drop probability for frames marked with Drop Precedence Level n increases linearly from zero (at Min. Threshold average queue filling level) to Max. DP n (at 100% average queue filling level).
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.9.15 QoS Statistics
This page provides statistics for the different queues for all switch ports. The QoS Statistics screen in Figure 4-9-17 appears.
The page includes the following fields:
Figure 4-9-17: Queuing Counters page Screenshot
Object
•
Port
•
Q0 ~ Q7
• Rx/Tx
Description
The logical port for the settings contained in the same row.
There are 8 QoS queues per port. Q0 is the lowest priority queue.
The number of received and transmitted packets per queue.
Buttons
: Click to refresh the page immediately.
: Clears the counters for all ports.
Auto-refresh : Check this box to enable an automatic refresh of the page at regular intervals.
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4.9.16 Voice VLAN Configuration
The Voice VLAN feature enables voice traffic forwarding on the Voice VLAN, then the switch can classify and schedule network traffic. It is recommended that there be two VLANs on a port - one for voice, one for data.
Before connecting the IP device to the switch, the IP phone should configure the voice VLAN ID correctly. It should be configured through its own GUI. The Voice VLAN Configuration screen in Figure 4-9-18 appears.
Figure 4-9-18: Voice VLAN Configuration page Screenshot
The page includes the following fields:
Object
• Mode
• VLAN ID
Description
Indicates the Voice VLAN mode operation. We must disable MSTP feature before we enable Voice VLAN. It can avoid the conflict of ingress filter. Possible modes are:
■
Enabled: Enable Voice VLAN mode operation.
■
Disabled: Disable Voice VLAN mode operation.
Indicates the Voice VLAN ID. It should be a unique VLAN ID in the system and cannot equal each port PVID. It is conflict configuration if the value equal
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• Aging Time
• Traffic Class
• Mode
• Port Security
• Port Discovery
Protocol
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management VID, MVR VID, PVID etc.
The allowed range is 1 to 4095.
Indicates the Voice VLAN secure learning age time. The allowed range is 10 to
10000000 seconds. It used when security mode or auto detect mode is enabled.
In other cases, it will based hardware age time.
The actual age time will be situated in the [age_time; 2 * age_time] interval.
Indicates the Voice VLAN traffic class. All traffic on Voice VLAN will apply this class.
Indicates the Voice VLAN port mode.
Possible port modes are:
■
Disabled: Disjoin from Voice VLAN.
■
Auto: Enable auto detect mode. It detects whether there is VoIP phone attached to the specific port and configures the Voice VLAN members automatically.
■
Forced: Force join to Voice VLAN.
Indicates the Voice VLAN port security mode. When the function is enabled, all non-telephone MAC address in Voice VLAN will be blocked 10 seconds. Possible port modes are:
■
Enabled: Enable Voice VLAN security mode operation.
■
Disabled: Disable Voice VLAN security mode operation.
Indicates the Voice VLAN port discovery protocol. It will only work when auto detect mode is enabled. We should enable LLDP feature before configuring discovery protocol to "LLDP" or "Both". Changing the discovery protocol to "OUI" or "LLDP" will restart auto detect process. Possible discovery protocols are:
■
OUI: Detect telephony device by OUI address.
■
LLDP: Detect telephony device by LLDP.
■
Both: Both OUI and LLDP.
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4.9.17 Voice VLAN OUI Table
Configure VOICE VLAN OUI table on this page. The maximum entry number is 16. Modifying the OUI table will restart auto detection of OUI process. The Voice VLAN OUI Table screen in Figure 4-9-19 appears.
Figure 4-9-19: Voice VLAN OUI Table page Screenshot
The page includes the following fields:
Object
• Delete
• Telephony OUI
• Description
Description
Check to delete the entry. It will be deleted during the next save.
An telephony OUI address is a globally unique identifier assigned to a vendor by
IEEE. It must be 6 characters long and the input format is "xx-xx-xx" (x is a hexadecimal digit).
The description of OUI address. Normally, it describes which vendor telephony device it belongs to.
The allowed string length is 0 to 32.
Buttons
: Click to add a new access management entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.10 Access Control Lists
ACL is an acronym for Access Control List. It is the list table of ACEs, containing access control entries that specify individual users or groups permitted or denied to specific traffic objects, such as a process or a program.
Each accessible traffic object contains an identifier to its ACL. The privileges determine whether there are specific traffic object access rights.
ACL implementations can be quite complex, for example, when the ACEs are prioritized for the various situation. In networking, the ACL refers to a list of service ports or network services that are available on a host or server, each with a list of hosts or servers permitted or denied to use the service. ACL can generally be configured to control inbound traffic, and in this context, they are similar to firewalls.
ACE is an acronym for Access Control Entry. It describes access permission associated with a particular ACE ID.
There are three ACE frame types (Ethernet Type, ARP, and IPv4) and two ACE actions (permit and deny). The ACE also contains many detailed, different parameter options that are available for individual application.
4.10.1 Access Control List Status
This page shows the ACL status by different ACL users. Each row describes the ACE that is defined. It is a conflict if a specific
ACE is not applied to the hardware due to hardware limitations. The maximum number of ACEs is 512 on each switch. The
Voice VLAN OUI Table screen in Figure 4-10-1 appears.
The page includes the following fields:
Figure 4-10-1: ACL Status page Screenshot
Object
• User
• Ingress Port
• Frame Type
Description
Indicates the ACL user.
Indicates the ingress port of the ACE. Possible values are:
■
All: The ACE will match all ingress port.
■
Port: The ACE will match a specific ingress port.
Indicates the frame type of the ACE. Possible values are:
■
Any: The ACE will match any frame type.
■
EType: The ACE will match Ethernet Type frames. Note that an
Ethernet Type based ACE will not get matched by IP and ARP
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• Action
• Rate Limiter
• Port Redirect
• Mirror
• CPU
• CPU Once
• Counter
• Conflict frames.
■
ARP: The ACE will match ARP/RARP frames.
■
IPv4: The ACE will match all IPv4 frames.
■
IPv4/ICMP: The ACE will match IPv4 frames with ICMP protocol.
■
IPv4/UDP: The ACE will match IPv4 frames with UDP protocol.
■
IPv4/TCP: The ACE will match IPv4 frames with TCP protocol.
■
IPv4/Other: The ACE will match IPv4 frames, which are not
ICMP/UDP/TCP.
■
IPv6: The ACE will match all IPv6 standard frames.
Indicates the forwarding action of the ACE.
■
Permit: Frames matching the ACE may be forwarded and learned.
■
Deny: Frames matching the ACE are dropped.
Indicates the rate limiter number of the ACE. The allowed range is 1 to 16. When
Disabled is displayed, the rate limiter operation is disabled.
Indicates the port redirect operation of the ACE. Frames matching the ACE are redirected to the port number.
The allowed values are Disabled or a specific port number. When Disabled is displayed, the port redirect operation is disabled.
Specify the mirror operation of this port. The allowed values are:
■
Enabled: Frames received on the port are mirrored.
■
Disabled: Frames received on the port are not mirrored.
The default value is "Disabled".
Forward packet that matched the specific ACE to CPU.
Forward first packet that matched the specific ACE to CPU.
The counter indicates the number of times the ACE was hit by a frame.
Indicates the hardware status of the specific ACE. The specific ACE is not applied to the hardware due to hardware limitations.
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page.
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4.10.2 Access Control List Configuration
This page shows the Access Control List (ACL), which is made up of the ACEs defined on this switch. Each row describes the
ACE that is defined. The maximum number of ACEs is 512 on each switch.
Click on the lowest plus sign to add a new ACE to the list. The reserved ACEs used for internal protocol, cannot be edited or deleted, the order sequence cannot be changed and the priority is highest. The Access Control List Configuration screen in
Figure 4-10-2 appears.
Figure 4-10-2: Access Control List Configuration page Screenshot
The page includes the following fields:
Object
• Ingress Port
• Policy / Bitmask
• Frame Type
• Action
Description
Indicates the ingress port of the ACE. Possible values are:
■
All: The ACE will match all ingress port.
■
Port: The ACE will match a specific ingress port.
Indicates the policy number and bitmask of the ACE.
Indicates the frame type of the ACE. Possible values are:
■
Any: The ACE will match any frame type.
■
EType: The ACE will match Ethernet Type frames. Note that an
Ethernet Type based ACE will not get matched by IP and ARP frames.
■
ARP: The ACE will match ARP/RARP frames.
■
IPv4: The ACE will match all IPv4 frames.
■
IPv4/ICMP: The ACE will match IPv4 frames with ICMP protocol.
■
IPv4/UDP: The ACE will match IPv4 frames with UDP protocol.
■
IPv4/TCP: The ACE will match IPv4 frames with TCP protocol.
■
IPv4/Other: The ACE will match IPv4 frames, which are not
ICMP/UDP/TCP.
■
IPv6: The ACE will match all IPv6 standard frames.
Indicates the forwarding action of the ACE.
■
Permit: Frames matching the ACE may be forwarded and learned.
■
Deny: Frames matching the ACE are dropped.
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Buttons
• Rate Limiter
• Port Redirect
• Counter
• Modification Buttons
Indicates the rate limiter number of the ACE. The allowed range is 1 to 16. When
Disabled is displayed, the rate limiter operation is disabled.
Indicates the port redirect operation of the ACE. Frames matching the ACE are redirected to the port number.
The allowed values are Disabled or a specific port number. When Disabled is displayed, the port redirect operation is disabled.
The counter indicates the number of times the ACE was hit by a frame.
You can modify each ACE (Access Control Entry) in the table using the following buttons:
: Inserts a new ACE before the current row.
: Edits the ACE row.
: Moves the ACE up the list.
: Moves the ACE down the list.
: Deletes the ACE.
: The lowest plus sign adds a new entry at the bottom of the ACE listings.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page; any changes made locally will be undone.
: Click to clear the counters.
: Click to remove all ACEs.
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4.10.3 ACE Configuration
Configure an ACE (Access Control Entry) on this page. An ACE consists of several parameters. These parameters vary according to the frame type that you select. First select the ingress port for the ACE, and then select the frame type. Different parameter options are displayed depending on the frame type selected. A frame that hits this ACE matches the configuration that is defined here. The ACE Configuration screen in Figure 4-10-3 appears.
Figure 4-10-3: ACE Configuration page Screenshot
The page includes the following fields:
Object
•
Ingress Port
• Policy Filter
• Policy Value
• Policy Bitmask
•
Frame Type
Description
Select the ingress port for which this ACE applies.
■
Any: The ACE applies to any port.
■
Port n: The ACE applies to this port number, where n is the number of the switch port.
Specify the policy number filter for this ACE.
■
Any: No policy filter is specified. (policy filter status is "don't-care".)
■
Specific: If you want to filter a specific policy with this ACE, choose this value. Two field for entering an policy value and bitmask appears.
When "Specific" is selected for the policy filter, you can enter a specific policy value.
The allowed range is 0 to 255.
When "Specific" is selected for the policy filter, you can enter a specific policy bitmask.
The allowed range is 0x0 to 0xff.
Select the frame type for this ACE. These frame types are mutually exclusive.
■
Any: Any frame can match this ACE.
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•
Action
•
Rate Limiter
• Port Redirect
• Logging
• Shutdown
• Counter
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■
Ethernet Type: Only Ethernet Type frames can match this ACE. The IEEE
802.3 describes the value of Length/Type Field specifications to be greater than or equal to 1536 decimal (equal to 0600 hexadecimal).
■
ARP: Only ARP frames can match this ACE. Notice the ARP frames won't match the ACE with Ethernet type.
■
IPv4: Only IPv4 frames can match this ACE. Notice the IPv4 frames won't match the ACE with Ethernet type.
■
IPv6: Only IPv6 frames can match this ACE. Notice the IPv6 frames won't match the ACE with Ehternet type.
Specify the action to take with a frame that hits this ACE.
■
Permit: The frame that hits this ACE is granted permission for the ACE operation.
■
Deny: The frame that hits this ACE is dropped.
Specify the rate limiter in number of base units.
The allowed range is 1 to 16.
Disabled indicates that the rate limiter operation is disabled.
Frames that hit the ACE are redirected to the port number specified here.
The allowed range is the same as the switch port number range.
Disabled indicates that the port redirect operation is disabled.
Specify the logging operation of the ACE. The allowed values are:
■
Enabled: Frames matching the ACE are stored in the System Log.
■
Disabled: Frames matching the ACE are not logged.
Note: The logging feature only works when the packet length is less than 1518(without
VLAN tags) and the System Log memory size and logging rate is limited.
Specify the port shut down operation of the ACE. The allowed values are:
■
Enabled: If a frame matches the ACE, the ingress port will be disabled.
■
Disabled: Port shut down is disabled for the ACE.
Note: The shutdown feature only works when the packet length is less than
1518(without VLAN tags).
The counter indicates the number of times the ACE was hit by a frame.
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MAC Parameters
Object
•
SMAC Filter
•
SMAC Value
•
DMAC Filter
•
DMAC Value
Description
(Only displayed when the frame type is Ethernet Type or ARP.)
Specify the source MAC filter for this ACE.
■
Any: No SMAC filter is specified. (SMAC filter status is "don't-care".)
■
Specific: If you want to filter a specific source MAC address with this ACE, choose this value. A field for entering an SMAC value appears.
When "Specific" is selected for the SMAC filter, you can enter a specific source MAC address. The legal format is "xx-xx-xx-xx-xx-xx" or "xx.xx.xx.xx.xx.xx" or
"xxxxxxxxxxxx" (x is a hexadecimal digit). A frame that hits this ACE matches this
SMAC value.
Specify the destination MAC filter for this ACE.
■
Any: No DMAC filter is specified. (DMAC filter status is "don't-care".)
■
MC: Frame must be multicast.
■
BC: Frame must be broadcast.
■
UC: Frame must be unicast.
■
Specific: If you want to filter a specific destination MAC address with this
ACE, choose this value. A field for entering a DMAC value appears.
When "Specific" is selected for the DMAC filter, you can enter a specific destination
MAC address. The legal format is "xx-xx-xx-xx-xx-xx" or "xx.xx.xx.xx.xx.xx" or
"xxxxxxxxxxxx" (x is a hexadecimal digit). A frame that hits this ACE matches this
DMAC value.
VLAN Parameters
Object
•
VLAN ID Filter
•
VLAN ID
•
Tag Priority
Description
Specify the VLAN ID filter for this ACE.
■
Any: No VLAN ID filter is specified. (VLAN ID filter status is "don't-care".)
■
Specific: If you want to filter a specific VLAN ID with this ACE, choose this value. A field for entering a VLAN ID number appears.
When "Specific" is selected for the VLAN ID filter, you can enter a specific VLAN ID number. The allowed range is 1 to 4095. A frame that hits this ACE matches this VLAN
ID value.
Specify the tag priority for this ACE. A frame that hits this ACE matches this tag priority.
The allowed number range is 0 to 7. The value Any means that no tag priority is specified (tag priority is "don't-care".)
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ARP Parameters
The ARP parameters can be configured when Frame Type "ARP" is selected.
Object
•
ARP/RARP
•
Request/Reply
•
Sender IP Filter
•
Sender IP Address
•
Sender IP Mask
• Target IP Filter
• Target IP Address
• Target IP Mask
• ARP Sender MAC
Match
Description
Specify the available ARP/RARP opcode (OP) flag for this ACE.
■
Any: No ARP/RARP OP flag is specified. (OP is "don't-care".)
■
ARP: Frame must have ARP/RARP opcode set to ARP.
■
RARP: Frame must have ARP/RARP opcode set to RARP.
■
Other: Frame has unknown ARP/RARP Opcode flag.
Specify the available ARP/RARP opcode (OP) flag for this ACE.
■
Any: No ARP/RARP OP flag is specified. (OP is "don't-care".)
■
Request: Frame must have ARP Request or RARP Request OP flag set.
■
Reply: Frame must have ARP Reply or RARP Reply OP flag.
Specify the sender IP filter for this ACE.
■
Any: No sender IP filter is specified. (Sender IP filter is "don't-care".)
■
Host: Sender IP filter is set to Host. Specify the sender IP address in the
SIP Address field that appears.
■
Network: Sender IP filter is set to Network. Specify the sender IP address and sender IP mask in the SIP Address and SIP Mask fields that appear.
When "Host" or "Network" is selected for the sender IP filter, you can enter a specific sender IP address in dotted decimal notation.
When "Network" is selected for the sender IP filter, you can enter a specific sender IP mask in dotted decimal notation.
Specify the target IP filter for this specific ACE.
■
Any: No target IP filter is specified. (Target IP filter is "don't-care".)
■
Host: Target IP filter is set to Host. Specify the target IP address in the
Target IP Address field that appears.
■
Network: Target IP filter is set to Network. Specify the target IP address and target IP mask in the Target IP Address and Target IP Mask fields that appear.
When "Host" or "Network" is selected for the target IP filter, you can enter a specific target IP address in dotted decimal notation.
When "Network" is selected for the target IP filter, you can enter a specific target
IP mask in dotted decimal notation.
Specify whether frames can hit the action according to their sender hardware address field (SHA) settings.
■
0: ARP frames where SHA is not equal to the SMAC address.
■
1: ARP frames where SHA is equal to the SMAC address.
■
Any: Any value is allowed ("don't-care").
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• RARP Target MAC
Match
• IP/Ethernet Length
• IP
• Ethernet
Specify whether frames can hit the action according to their target hardware address field (THA) settings.
■
0: RARP frames where THA is not equal to the SMAC address.
■
1: RARP frames where THA is equal to the SMAC address.
■
Any: Any value is allowed ("don't-care").
Specify whether frames can hit the action according to their ARP/RARP hardware address length (HLN) and protocol address length (PLN) settings.
■
0: ARP/RARP frames where the HLN is equal to Ethernet (0x06) and the
(PLN) is equal to IPv4 (0x04).
■
1: ARP/RARP frames where the HLN is equal to Ethernet (0x06) and the
(PLN) is equal to IPv4 (0x04).
■
Any: Any value is allowed ("don't-care").
Specify whether frames can hit the action according to their ARP/RARP hardware address space (HRD) settings.
■
0: ARP/RARP frames where the HLD is equal to Ethernet (1).
■
1: ARP/RARP frames where the HLD is equal to Ethernet (1).
■
Any: Any value is allowed ("don't-care").
Specify whether frames can hit the action according to their ARP/RARP protocol address space (PRO) settings.
■
0: ARP/RARP frames where the PRO is equal to IP (0x800).
■
1: ARP/RARP frames where the PRO is equal to IP (0x800).
■
Any: Any value is allowed ("don't-care").
IP Parameters
The IP parameters can be configured when Frame Type "IPv4" is selected.
Object
•
IP Protocol Filter
Description
Specify the IP protocol filter for this ACE.
■
Any: No IP protocol filter is specified ("don't-care").
■
Specific: If you want to filter a specific IP protocol filter with this ACE, choose this value. A field for entering an IP protocol filter appears.
■
ICMP: Select ICMP to filter IPv4 ICMP protocol frames. Extra fields for defining ICMP parameters will appear. These fields are explained later in this help file.
■
UDP: Select UDP to filter IPv4 UDP protocol frames. Extra fields for defining UDP parameters will appear. These fields are explained later in this help file.
■
TCP: Select TCP to filter IPv4 TCP protocol frames. Extra fields for defining
TCP parameters will appear. These fields are explained later in this help file.
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• IP Protocol Value
• IP TTL
• IP Fragment
• IP Option
• SIP Filter
• SIP Address
• SIP Mask
• DIP Filter
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When "Specific" is selected for the IP protocol value, you can enter a specific value. The allowed range is 0 to 255. A frame that hits this ACE matches this IP protocol value.
Specify the Time-to-Live settings for this ACE.
■
zero: IPv4 frames with a Time-to-Live field greater than zero must not be able to match this entry.
■
non-zero: IPv4 frames with a Time-to-Live field greater than zero must be able to match this entry.
■
Any: Any value is allowed ("don't-care").
Specify the fragment offset settings for this ACE. This involves the settings for the
More Fragments (MF) bit and the Fragment Offset (FRAG OFFSET) field for an
IPv4 frame.
■
No: IPv4 frames where the MF bit is set or the FRAG OFFSET field is greater than zero must not be able to match this entry.
■
Yes: IPv4 frames where the MF bit is set or the FRAG OFFSET field is greater than zero must be able to match this entry.
■
Any: Any value is allowed ("don't-care").
Specify the options flag setting for this ACE.
■
No: IPv4 frames where the options flag is set must not be able to match this entry.
■
Yes: IPv4 frames where the options flag is set must be able to match this entry.
■
Any: Any value is allowed ("don't-care").
Specify the source IP filter for this ACE.
■
Any: No source IP filter is specified. (Source IP filter is "don't-care".)
■
Host: Source IP filter is set to Host. Specify the source IP address in the
SIP Address field that appears.
■
Network: Source IP filter is set to Network. Specify the source IP address and source IP mask in the SIP Address and SIP Mask fields that appear.
When "Host" or "Network" is selected for the source IP filter, you can enter a specific SIP address in dotted decimal notation.
When "Network" is selected for the source IP filter, you can enter a specific SIP mask in dotted decimal notation.
Specify the destination IP filter for this ACE.
■
Any: No destination IP filter is specified. (Destination IP filter is
"don't-care".)
■
Host: Destination IP filter is set to Host. Specify the destination IP address in the DIP Address field that appears.
■
Network: Destination IP filter is set to Network. Specify the destination IP address and destination IP mask in the DIP Address and DIP Mask fields
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• DIP Address
• DIP Mask
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that appear.
When "Host" or "Network" is selected for the destination IP filter, you can enter a specific DIP address in dotted decimal notation.
When "Network" is selected for the destination IP filter, you can enter a specific
DIP mask in dotted decimal notation.
IPv6 Parameters
Object
•
Next Header Fliter
•
Next Header Value
•
SIP Filter
• SIP Address
• SIP BitMask
Description
Specify the IPv6 next header filter for this ACE.
■
Any: No IPv6 next header filter is specified ("don't-care").
■
Specific: If you want to filter a specific IPv6 next header filter with this
ACE, choose this value. A field for entering an IPv6 next header filter appears.
■
ICMP: Select ICMP to filter IPv6 ICMP protocol frames. Extra fields for defining ICMP parameters will appear. These fields are explained later in this help file.
■
UDP: Select UDP to filter IPv6 UDP protocol frames. Extra fields for defining UDP parameters will appear. These fields are explained later in this help file.
■
TCP: Select TCP to filter IPv6 TCP protocol frames. Extra fields for defining
TCP parameters will appear. These fields are explained later in this help file.
When "Specific" is selected for the IPv6 next header value, you can enter a specific value. The allowed range is 0 to 255. A frame that hits this ACE matches this IPv6 protocol value.
Specify the source IPv6 filter for this ACE.
■
Any: No source IPv6 filter is specified. (Source IPv6 filter is "don't-care".)
■
Specific: Source IPv6 filter is set to Network. Specify the source IPv6 address and source IPv6 mask in the SIP Address fields that appear.
When "Specific" is selected for the source IPv6 filter, you can enter a specific
SIPv6 address. The field only supported last 32 bits for IPv6 address.
When "Specific" is selected for the source IPv6 filter, you can enter a specific
SIPv6 mask. The field only supported last 32 bits for IPv6 address. Notice the usage of bitmask, if the binary bit value is "0", it means this bit is "don't-care".
The real matched pattern is [sipv6_address & sipv6_bitmask] (last 32 bits). For example, if the SIPv6 address is 2001::3 and the SIPv6 bitmask is
0xFFFFFFFE(bit 0 is "don't-care" bit), then SIPv6 address 2001::2 and 2001::3 are applied to this rule.
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• Hop Limit
Specify the hop limit settings for this ACE.
■
zero: IPv6 frames with a hop limit field greater than zero must not be able to match this entry.
■
non-zero: IPv6 frames with a hop limit field greater than zero must be able to match this entry.
■
Any: Any value is allowed ("don't-care”).
ICMP Parameters
Object
•
ICMP Type Filter
•
ICMP Type Value
•
ICMP Code Filter
•
ICMP Code Value
Description
Specify the ICMP filter for this ACE.
■
Any: No ICMP filter is specified (ICMP filter status is "don't-care").
■
Specific: If you want to filter a specific ICMP filter with this ACE, you can enter a specific ICMP value. A field for entering an ICMP value appears.
When "Specific" is selected for the ICMP filter, you can enter a specific ICMP value.
The allowed range is 0 to 255. A frame that hits this ACE matches this ICMP value.
Specify the ICMP code filter for this ACE.
■
Any: No ICMP code filter is specified (ICMP code filter status is
"don't-care").
■
Specific: If you want to filter a specific ICMP code filter with this ACE, you can enter a specific ICMP code value. A field for entering an ICMP code value appears.
When "Specific" is selected for the ICMP code filter, you can enter a specific
ICMP code value.
The allowed range is 0 to 255. A frame that hits this ACE matches this ICMP code value.
TCP/UDP Parameters
Object Description
•
TCP/UDP Source Filter
Specify the TCP/UDP source filter for this ACE.
■
Any: No TCP/UDP source filter is specified (TCP/UDP source filter status is "don't-care").
■
Specific: If you want to filter a specific TCP/UDP source filter with this
ACE, you can enter a specific TCP/UDP source value. A field for entering a
TCP/UDP source value appears.
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•
•
TCP/UDP Source No.
TCP/UDP Source
Range
• TCP FIN
• TCP SYN
• TCP RST
•
TCP/UDP Destination
Filter
•
TCP/UDP Destination
Number
• TCP/UDP Destination
Range
■
Range: If you want to filter a specific TCP/UDP source range filter with this
ACE, you can enter a specific TCP/UDP source range value. A field for entering a TCP/UDP source value appears.
When "Specific" is selected for the TCP/UDP source filter, you can enter a specific TCP/UDP source value. The allowed range is 0 to 65535. A frame that hits this ACE matches this TCP/UDP source value.
When "Range" is selected for the TCP/UDP source filter, you can enter a specific
TCP/UDP source range value. The allowed range is 0 to 65535. A frame that hits this ACE matches this TCP/UDP source value.
Specify the TCP/UDP destination filter for this ACE.
■
Any: No TCP/UDP destination filter is specified (TCP/UDP destination filter status is "don't-care").
■
Specific: If you want to filter a specific TCP/UDP destination filter with this
ACE, you can enter a specific TCP/UDP destination value. A field for entering a TCP/UDP destination value appears.
■
Range: If you want to filter a specific range TCP/UDP destination filter with this ACE, you can enter a specific TCP/UDP destination range value. A field for entering a TCP/UDP destination value appears.
When "Specific" is selected for the TCP/UDP destination filter, you can enter a specific TCP/UDP destination value. The allowed range is 0 to 65535. A frame that hits this ACE matches this TCP/UDP destination value.
When "Range" is selected for the TCP/UDP destination filter, you can enter a specific TCP/UDP destination range value. The allowed range is 0 to 65535. A frame that hits this ACE matches this TCP/UDP destination value.
Specify the TCP "No more data from sender" (FIN) value for this ACE.
■
0: TCP frames where the FIN field is set must not be able to match this entry.
■
1: TCP frames where the FIN field is set must be able to match this entry.
■
Any: Any value is allowed ("don't-care").
Specify the TCP "Synchronize sequence numbers" (SYN) value for this ACE.
■
0: TCP frames where the SYN field is set must not be able to match this entry.
■
1: TCP frames where the SYN field is set must be able to match this entry.
■
Any: Any value is allowed ("don't-care").
Specify the TCP "Reset the connection" (RST) value for this ACE.
■
0: TCP frames where the RST field is set must not be able to match this entry.
■
1: TCP frames where the RST field is set must be able to match this entry.
■
Any: Any value is allowed ("don't-care").
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• TCP PSH
• TCP ACK
• TCP URG
Ethernet Type Parameters
Specify the TCP "Push Function" (PSH) value for this ACE.
■
0: TCP frames where the PSH field is set must not be able to match this entry.
■
1: TCP frames where the PSH field is set must be able to match this entry.
■
Any: Any value is allowed ("don't-care").
Specify the TCP "Acknowledgment field significant" (ACK) value for this ACE.
■
0: TCP frames where the ACK field is set must not be able to match this entry.
■
1: TCP frames where the ACK field is set must be able to match this entry.
■
Any: Any value is allowed ("don't-care").
Specify the TCP "Urgent Pointer field significant" (URG) value for this ACE.
■
0: TCP frames where the URG field is set must not be able to match this entry.
■
1: TCP frames where the URG field is set must be able to match this entry.
■
Any: Any value is allowed ("don't-care").
The Ethernet Type parameters can be configured when Frame Type "Ethernet Type" is selected.
Object
•
EtherType Filter
•
Ethernet Type Value
Description
Specify the Ethernet type filter for this ACE.
■
Any: No EtherType filter is specified (EtherType filter status is
"don't-care").
■
Specific: If you want to filter a specific EtherType filter with this ACE, you can enter a specific EtherType value. A field for entering a
EtherType value appears.
When "Specific" is selected for the EtherType filter, you can enter a specific
EtherType value.
The allowed range is 0x600 to 0xFFFF but excluding 0x800(IPv4), 0x806(ARP) and 0x86DD(IPv6). A frame that hits this ACE matches this EtherType value.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
: Return to the previous page.
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4.10.4 ACL Ports Configuration
Configure the ACL parameters (ACE) of each switch port. These parameters will affect frames received on a port unless the frame matches a specific ACE. The ACL Ports Configuration screen in Figure 4-10-4 appears.
Figure 4-10-4: ACL Ports Configuration page Screenshot
The page includes the following fields:
Object
•
Port
•
Policy ID
•
•
Action
Rate Limiter ID
• Port Redirect
• Logging
Description
The logical port for the settings contained in the same row.
Select the policy to apply to this port. The allowed values are 0 through 255.
The default value is 0.
Select whether forwarding is permitted ("Permit") or denied ("Deny").
The default value is "Permit".
Select which rate limiter to apply on this port. The allowed values are Disabled or the values 1 through 16.
The default value is "Disabled".
Select which port frames are redirected on. The allowed values are Disabled or a specific port number and it can't be set when action is permitted. The default value is "Disabled".
Specify the logging operation of this port. The allowed values are:
■
Enabled: Frames received on the port are stored in the System Log.
■
Disabled: Frames received on the port are not logged.
The default value is "Disabled".
Please note that the System Log memory size and logging rate are limited.
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• Shutdown
• State
Specify the port shut down operation of this port. The allowed values are:
■
Enabled: If a frame is received on the port, the port will be disabled.
■
Disabled: Port shut down is disabled.
The default value is "Disabled".
Specify the port state of this port. The allowed values are:
■
Enabled: To reopen ports by changing the volatile port configuration of the
ACL user module.
■
Disabled: To close ports by changing the volatile port configuration of the
ACL user module.
The default value is "Enabled".
Counts the number of frames that match this ACE.
Buttons
• Counter
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
: Click to refresh the page; any changes made locally will be undone.
: Click to clear the counters.
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4.10.5 ACL Rate Limiter Configuration
Configure the rate limiter for the ACL of the switch.
The ACL Rate Limiter Configuration screen in Figure 4-10-5 appears.
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Figure 4-10-5: ACL Rate Limiter Configuration page Screenshot
The page includes the following fields:
Object
•
Rate Limiter ID
•
Rate (pps)
Description
The rate limiter ID for the settings contained in the same row.
The allowed values are: 0-3276700 in pps or 0, 100, 200, 300, ..., 1000000 in kbps.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.11 Authentication
This section is to control the access of the Managed Switch, includes the user access and management control.
The Authentication section contains links to the following main topics:
IEEE 802.1X Port-Based Network Access Control
MAC-Based Authentication
User Authentication
Overview of 802.1X (Port-Based) Authentication
In the 802.1X-world, the user is called the supplicant, the switch is the authenticator, and the RADIUS server is the authentication server. The switch acts as the man-in-the-middle, forwarding requests and responses between the supplicant and the authentication server. Frames sent between the supplicant and the switch are special 802.1X frames, known as EAPOL
(EAP Over LANs) frames. EAPOL frames encapsulate EAP PDUs (RFC3748). Frames sent between the switch and the
RADIUS server are RADIUS packets. RADIUS packets also encapsulate EAP PDUs together with other attributes like the switch's IP address, name, and the supplicant's port number on the switch. EAP is very flexible, in that it allows for different authentication methods, like MD5-Challenge, PEAP, and TLS. The important thing is that the authenticator (the switch) doesn't need to know which authentication method the supplicant and the authentication server are using, or how many information exchange frames are needed for a particular method. The switch simply encapsulates the EAP part of the frame into the relevant type (EAPOL or RADIUS) and forwards it.
When authentication is complete, the RADIUS server sends a special packet containing a success or failure indication. Besides forwarding this decision to the supplicant, the switch uses it to open up or block traffic on the switch port connected to the supplicant.
Overview of MAC-Based Authentication
Unlike 802.1X, MAC-based authentication is not a standard, but merely a best-practices method adopted by the industry. In
MAC-based authentication, users are called clients, and the switch acts as the supplicant on behalf of clients. The initial frame
(any kind of frame) sent by a client is snooped by the switch, which in turn uses the client's MAC address as both username and password in the subsequent EAP exchange with the RADIUS server. The 6-byte MAC address is converted to a string on the following form "xx-xx-xx-xx-xx-xx", that is, a dash (-) is used as separator between the lower-cased hexadecimal digits. The switch only supports the MD5-Challenge authentication method, so the RADIUS server must be configured accordingly.
When authentication is complete, the RADIUS server sends a success or failure indication, which in turn causes the switch to open up or block traffic for that particular client, using static entries into the MAC Table. Only then will frames from the client be forwarded on the switch. There are no EAPOL frames involved in this authentication, and therefore, MAC-based Authentication has nothing to do with the 802.1X standard.
The advantage of MAC-based authentication over 802.1X is that several clients can be connected to the same port (e.g. through a 3rd party switch or a hub) and still require individual authentication, and that the clients don't need special supplicant software
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to authenticate. The disadvantage is that MAC addresses can be spoofed by malicious users, equipment whose MAC address is a valid RADIUS user can be used by anyone, and only the MD5-Challenge method is supported.
The 802.1X and MAC-Based Authentication configuration consists of two sections, a system- and a port-wide.
Overview of User Authentication
It is allowed to configure the Managed Switch to authenticate users logging into the system for management access using local or remote authentication methods, such as telnet and Web browser. This Managed Switch provides secure network management access using the following options:
Remote Authentication Dial-in User Service (RADIUS)
Terminal Access Controller Access Control System Plus (TACACS+)
Local user name and Priviledge Level control
RADIUS and TACACS+ are logon authentication protocols that use software running on a central server to control access to
RADIUS-aware or TACACS-aware devices on the network. An authentication server contains a database of multiple user name / password pairs with associated privilege levels for each user that requires management access to the Managed Switch.
4.11.1 Understanding IEEE 802.1X Port-Based Authentication
The IEEE 802.1X standard defines a client-server-based access control and authentication protocol that restricts unauthorized clients from connecting to a LAN through publicly accessible ports. The authentication server authenticates each client connected to a switch port before making available any services offered by the switch or the LAN.
Until the client is authenticated, 802.1X access control allows only Extensible Authentication Protocol over LAN (EAPOL) traffic through the port to which the client is connected. After authentication is successful, normal traffic can pass through the port.
This section includes this conceptual information:
• Device Roles
• Authentication Initiation and Message Exchange
• Ports in Authorized and Unauthorized States
Device Roles
With 802.1X port-based authentication, the devices in the network have specific roles as shown below.
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Figure 4-11-1
Client—the device (workstation) that requests access to the LAN and switch services and responds to requests from the switch. The workstation must be running 802.1X-compliant client software such as that offered in the Microsoft
Windows XP operating system. (The client is the supplicant in the IEEE 802.1X specification.)
Authentication server—performs the actual authentication of the client. The authentication server validates the identity of the client and notifies the switch whether or not the client is authorized to access the LAN and switch services.
Because the switch acts as the proxy, the authentication service is transparent to the client. In this release, the Remote
Authentication Dial-In User Service (RADIUS) security system with Extensible Authentication Protocol (EAP) extensions is the only supported authentication server; it is available in Cisco Secure Access Control Server version 3.0.
RADIUS operates in a client/server model in which secure authentication information is exchanged between the
RADIUS server and one or more RADIUS clients.
Switch (802.1X device)—controls the physical access to the network based on the authentication status of the client.
The switch acts as an intermediary (proxy) between the client and the authentication server, requesting identity information from the client, verifying that information with the authentication server, and relaying a response to the client.
The switch includes the RADIUS client, which is responsible for encapsulating and decapsulating the Extensible
Authentication Protocol (EAP) frames and interacting with the authentication server. When the switch receives EAPOL frames and relays them to the authentication server, the Ethernet header is stripped and the remaining EAP frame is re-encapsulated in the RADIUS format. The EAP frames are not modified or examined during encapsulation, and the authentication server must support EAP within the native frame format. When the switch receives frames from the
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authentication server, the server's frame header is removed, leaving the EAP frame, which is then encapsulated for
Ethernet and sent to the client.
Authentication Initiation and Message Exchange
The switch or the client can initiate authentication. If you enable authentication on a port by using the dot1x port-control auto interface configuration command, the switch must initiate authentication when it determines that the port link state transitions from down to up. It then sends an EAP-request/identity frame to the client to request its identity (typically, the switch sends an initial identity/request frame followed by one or more requests for authentication information). Upon receipt of the frame, the client responds with an EAP-response/identity frame.
However, if during bootup, the client does not receive an EAP-request/identity frame from the switch, the client can initiate authentication by sending an EAPOL-start frame, which prompts the switch to request the client's identity
If 802.1X is not enabled or supported on the network access device, any EAPOL frames from the client are dropped. If the client does not receive an EAP-request/identity frame after three attempts to start authentication, the client transmits frames as if the port is in the authorized state. A port in the authorized state effectively means that the client has been successfully authenticated.
When the client supplies its identity, the switch begins its role as the intermediary, passing EAP frames between the client and the authentication server until authentication succeeds or fails. If the authentication succeeds, the switch port becomes authorized.
The specific exchange of EAP frames depends on the authentication method being used. “ Figure 4-11-2 ” shows a message exchange initiated by the client using the One-Time-Password (OTP) authentication method with a RADIUS server.
Figure 4-11-2: EAP Message Exchange
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Ports in Authorized and Unauthorized States
The switch port state determines whether or not the client is granted access to the network. The port starts in the unauthorized state. While in this state, the port disallows all ingress and egress traffic except for 802.1X protocol packets. When a client is successfully authenticated, the port transitions to the authorized state, allowing all traffic for the client to flow normally.
If a client that does not support 802.1X is connected to an unauthorized 802.1X port, the switch requests the client's identity. In this situation, the client does not respond to the request, the port remains in the unauthorized state, and the client is not granted access to the network.
In contrast, when an 802.1X-enabled client connects to a port that is not running the 802.1X protocol, the client initiates the authentication process by sending the EAPOL-start frame. When no response is received, the client sends the request for a fixed number of times. Because no response is received, the client begins sending frames as if the port is in the authorized state
If the client is successfully authenticated (receives an Accept frame from the authentication server), the port state changes to authorized, and all frames from the authenticated client are allowed through the port. If the authentication fails, the port remains in the unauthorized state, but authentication can be retried. If the authentication server cannot be reached, the switch can retransmit the request. If no response is received from the server after the specified number of attempts, authentication fails, and network access is not granted.
When a client logs off, it sends an EAPOL-logoff message, causing the switch port to transition to the unauthorized state.
If the link state of a port transitions from up to down, or if an EAPOL-logoff frame is received, the port returns to the unauthorized state.
4.11.2 Authentication Configuration
This page allows you to configure how a user is authenticated when he logs into the switch via one of the management client interfaces. The Authentication Method Configuration screen in Figure 4-11-3 appears.
Figure 4-11-3: Authentication Method Configuration page Screenshot
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The page includes the following fields:
Buttons
Object
• Client
Description
The management client for which the configuration below applies.
• Authentication Method
Authentication Method can be set to one of the following values:
■
None: authentication is disabled and login is not possible.
■
Local: use the local user database on the switch stack for authentication.
■
RADIUS: use a remote RADIUS server for authentication.
■
TACACS+: use a remote TACACS+ server for authentication.
Methods that involves remote servers are timed out if the remote servers are offline. In this case the next method is tried. Each method is tried from left to right and continues until a method either approves or rejects a user. If a remote server is used for primary authentication it is recommended to configure secondary authentication as 'local'. This will enable the management client to login via the local user database if none of the configured authentication servers are alive.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.11.3 Network Access Server Configuration
This page allows you to configure the IEEE 802.1X and MAC-based authentication system and port settings.
The IEEE 802.1X standard defines a port-based access control procedure that prevents unauthorized access to a network by requiring users to first submit credentials for authentication. One or more central servers, the backend servers, determine whether the user is allowed access to the network. These backend (RADIUS) servers are configured on the
"Configuration→Security→AAA" page. The IEEE802.1X standard defines port-based operation, but non-standard variants overcome security limitations as shall be explored below.
MAC-based authentication allows for authentication of more than one user on the same port, and doesn't require the user to have special 802.1X supplicant software installed on his system. The switch uses the user's MAC address to authenticate against the backend server. Intruders can create counterfeit MAC addresses, which makes MAC-based authentication less secure than 802.1X authentication. The NAS configuration consists of two sections, a system- and a port-wide. The Network
Access Server Configuration screen in Figure 4-11-4 appears.
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Figure 4-11-4: Network Access Server Configuration page Screenshot
The page includes the following fields:
System Configuration
Object
• Mode
• Reauthentication
Enabled
Description
Indicates if NAS is globally enabled or disabled on the switch. If globally disabled, all ports are allowed forwarding of frames.
If checked, successfully authenticated supplicants/clients are reauthenticated after the interval specified by the Reauthentication Period. Reauthentication for
802.1X-enabled ports can be used to detect if a new device is plugged into a switch port or if a supplicant is no longer attached.
For MAC-based ports, reauthentication is only useful if the RADIUS server configuration has changed. It does not involve communication between the
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• Reauthentication
Period
• EAPOL Timeout
• Aging Period
• Hold Time
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switch and the client, and therefore doesn't imply that a client is still present on a port.
Determines the period, in seconds, after which a connected client must be reauthenticated. This is only active if the Reauthentication Enabled checkbox is checked. Valid values are in the range 1 to 3600 seconds.
Determines the time for retransmission of Request Identity EAPOL frames.
Valid values are in the range 1 to 65535 seconds. This has no effect for
MAC-based ports.
This setting applies to the following modes, i.e. modes using the Port Security functionality to secure MAC addresses:
■
Single 802.1X
■
Multi 802.1X
■
MAC-Based Auth.
When the NAS module uses the Port Security module to secure MAC addresses, the Port Security module needs to check for activity on the MAC address in question at regular intervals and free resources if no activity is seen within a given period of time. This parameter controls exactly this period and can be set to a number between 10 and 1000000 seconds.
If reauthentication is enabled and the port is in a 802.1X-based mode, this is not so critical, since supplicants that are no longer attached to the port will get removed upon the next reauthentication, which will fail. But if reauthentication is not enabled, the only way to free resources is by aging the entries.
For ports in MAC-based Auth. mode, reauthentication doesn't cause direct communication between the switch and the client, so this will not detect whether the client is still attached or not, and the only way to free any resources is to age the entry.
This setting applies to the following modes, i.e. modes using the Port Security functionality to secure MAC addresses:
■
Single 802.1X
■
Multi 802.1X
■
MAC-Based Auth.
If a client is denied access - either because the RADIUS server denies the client access or because the RADIUS server request times out (according to the timeout specified on the "Configuration→Security→AAA" page) - the client is put on hold in the Unauthorized state. The hold timer does not count during an on-going authentication.
In MAC-based Auth. mode, the switch will ignore new frames coming from the
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client during the hold time.
The Hold Time can be set to a number between 10 and 1000000 seconds.
• RADIUS-Assigned QoS
RADIUS-assigned QoS provides a means to centrally control the traffic class to
Enabled
which traffic coming from a successfully authenticated supplicant is assigned on the switch. The RADIUS server must be configured to transmit special RADIUS attributes to take advantage of this feature.
The "RADIUS-Assigned QoS Enabled" checkbox provides a quick way to globally enable/disable RADIUS-server assigned QoS Class functionality. When checked, the individual ports' ditto setting determines whether RADIUS-assigned
QoS Class is enabled for that port. When unchecked, RADIUS-server assigned
QoS Class is disabled for all ports.
• RADIUS-Assigned
VLAN Enabled
RADIUS-assigned VLAN provides a means to centrally control the VLAN on which a successfully authenticated supplicant is placed on the switch. Incoming traffic will be classified to and switched on the RADIUS-assigned VLAN. The
RADIUS server must be configured to transmit special RADIUS attributes to take advantage of this feature.
The "RADIUS-Assigned VLAN Enabled" checkbox provides a quick way to globally enable/disable RADIUS-server assigned VLAN functionality. When checked, the individual ports' ditto setting determine whether RADIUS-assigned
VLAN is enabled for that port. When unchecked, RADIUS-server assigned VLAN is disabled for all ports.
• Guest VLAN Enabled
A Guest VLAN is a special VLAN - typically with limited network access - on which 802.1X-unaware clients are placed after a network administrator-defined timeout. The switch follows a set of rules for entering and leaving the Guest
VLAN as listed below.
The "Guest VLAN Enabled" checkbox provides a quick way to globally enable/disable Guest VLAN functionality. When checked, the individual ports' ditto setting determines whether the port can be moved into Guest VLAN. When unchecked, the ability to move to the Guest VLAN is disabled for all ports.
• Guest VLAN ID
This is the value that a port's Port VLAN ID is set to if a port is moved into the
Guest VLAN. It is only changeable if the Guest VLAN option is globally enabled.
Valid values are in the range [1; 4095].
• Max. Reauth. Count
The number of times that the switch transmits an EAPOL Request Identity frame without response before considering entering the Guest VLAN is adjusted with this setting. The value can only be changed if the Guest VLAN option is globally
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• Allow Guest VLAN if
EAPOL Seen
enabled.
Valid values are in the range [1; 255].
The switch remembers if an EAPOL frame has been received on the port for the life-time of the port. Once the switch considers whether to enter the Guest VLAN, it will first check if this option is enabled or disabled. If disabled (unchecked; default), the switch will only enter the Guest VLAN if an EAPOL frame has not been received on the port for the life-time of the port. If enabled (checked), the switch will consider entering the Guest VLAN even if an EAPOL frame has been received on the port for the life-time of the port.
The value can only be changed if the Guest VLAN option is globally enabled.
Port Configuration
The table has one row for each port on the selected switch in the stack and a number of columns, which are:
Object
• Port
• Admin State
Description
The port number for which the configuration below applies.
If NAS is globally enabled, this selection controls the port's authentication mode.
The following modes are available:
Force Authorized
In this mode, the switch will send one EAPOL Success frame when the port link comes up, and any client on the port will be allowed network access without authentication.
Force Unauthorized
In this mode, the switch will send one EAPOL Failure frame when the port link comes up, and any client on the port will be disallowed network access.
Port-based 802.1X
In the 802.1X-world, the user is called the supplicant, the switch is the authenticator, and the RADIUS server is the authentication server. The authenticator acts as the man-in-the-middle, forwarding requests and responses between the supplicant and the authentication server. Frames sent between the supplicant and the switch are special 802.1X frames, known as EAPOL (EAP
Over LANs) frames. EAPOL frames encapsulate EAP PDUs (RFC3748). Frames sent between the switch and the RADIUS server are RADIUS packets. RADIUS
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packets also encapsulate EAP PDUs together with other attributes like the switch's IP address, name, and the supplicant's port number on the switch. EAP is very flexible, in that it allows for different authentication methods, like
MD5-Challenge, PEAP, and TLS. The important thing is that the authenticator
(the switch) doesn't need to know which authentication method the supplicant and the authentication server are using, or how many information exchange frames are needed for a particular method. The switch simply encapsulates the
EAP part of the frame into the relevant type (EAPOL or RADIUS) and forwards it.
When authentication is complete, the RADIUS server sends a special packet containing a success or failure indication. Besides forwarding this decision to the supplicant, the switch uses it to open up or block traffic on the switch port connected to the supplicant.
Note: Suppose two backend servers are enabled and that the server timeout is configured to X seconds (using the AAA configuration page), and suppose that the first server in the list is currently down (but not considered dead). Now, if the supplicant retransmits EAPOL Start frames at a rate faster than X seconds, then it will never get authenticated, because the switch will cancel on-going backend authentication server requests whenever it receives a new EAPOL Start frame from the supplicant. And since the server hasn't yet failed (because the X seconds haven't expired), the same server will be contacted upon the next backend authentication server request from the switch. This scenario will loop forever. Therefore, the server timeout should be smaller than the supplicant's
EAPOL Start frame retransmission rate.
Single 802.1X
In port-based 802.1X authentication, once a supplicant is successfully authenticated on a port, the whole port is opened for network traffic. This allows other clients connected to the port (for instance through a hub) to piggy-back on the successfully authenticated client and get network access even though they really aren't authenticated. To overcome this security breach, use the Single
802.1X variant.
Single 802.1X is really not an IEEE standard, but features many of the same characteristics as does port-based 802.1X. In Single 802.1X, at most one supplicant can get authenticated on the port at a time. Normal EAPOL frames are used in the communication between the supplicant and the switch. If more than one supplicant is connected to a port, the one that comes first when the port's link comes up will be the first one considered. If that supplicant doesn't provide valid credentials within a certain amount of time, another supplicant will get a chance.
Once a supplicant is successfully authenticated, only that supplicant will be
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allowed access. This is the most secure of all the supported modes. In this mode, the Port Security module is used to secure a supplicant's MAC address once successfully authenticated.
Multi 802.1X
Multi 802.1X is - like Single 802.1X - not an IEEE standard, but a variant that features many of the same characteristics. In Multi 802.1X, one or more supplicants can get authenticated on the same port at the same time. Each supplicant is authenticated individually and secured in the MAC table using the
Port Security module.
In Multi 802.1X it is not possible to use the multicast BPDU MAC address as destination MAC address for EAPOL frames sent from the switch towards the supplicant, since that would cause all supplicants attached to the port to reply to requests sent from the switch. Instead, the switch uses the supplicant's MAC address, which is obtained from the first EAPOL Start or EAPOL Response
Identity frame sent by the supplicant. An exception to this is when no supplicants are attached. In this case, the switch sends EAPOL Request Identity frames using the BPDU multicast MAC address as destination - to wake up any supplicants that might be on the port.
The maximum number of supplicants that can be attached to a port can be limited using the Port Security Limit Control functionality.
MAC-based Auth.
Unlike port-based 802.1X, MAC-based authentication is not a standard, but merely a best-practices method adopted by the industry. In MAC-based authentication, users are called clients, and the switch acts as the supplicant on behalf of clients. The initial frame (any kind of frame) sent by a client is snooped by the switch, which in turn uses the client's MAC address as both username and password in the subsequent EAP exchange with the RADIUS server. The 6-byte
MAC address is converted to a string on the following form "xx-xx-xx-xx-xx-xx", that is, a dash (-) is used as separator between the lower-cased hexadecimal digits. The switch only supports the MD5-Challenge authentication method, so the RADIUS server must be configured accordingly.
When authentication is complete, the RADIUS server sends a success or failure indication, which in turn causes the switch to open up or block traffic for that particular client, using the Port Security module. Only then will frames from the client be forwarded on the switch. There are no EAPOL frames involved in this authentication, and therefore, MAC-based Authentication has nothing to do with
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the 802.1X standard.
The advantage of MAC-based authentication over port-based 802.1X is that several clients can be connected to the same port (e.g. through a 3rd party switch or a hub) and still require individual authentication, and that the clients don't need special supplicant software to authenticate. The advantage of
MAC-based authentication over 802.1X-based authentication is that the clients don't need special supplicant software to authenticate. The disadvantage is that
MAC addresses can be spoofed by malicious users - equipment whose MAC address is a valid RADIUS user can be used by anyone. Also, only the
MD5-Challenge method is supported. The maximum number of clients that can be attached to a port can be limited using the Port Security Limit Control functionality.
• RADIUS-Assigned QoS
When RADIUS-Assigned QoS is both globally enabled and enabled (checked)
Enabled
for a given port, the switch reacts to QoS Class information carried in the
RADIUS Access-Accept packet transmitted by the RADIUS server when a supplicant is successfully authenticated. If present and valid, traffic received on the supplicant's port will be classified to the given QoS Class. If
(re-)authentication fails or the RADIUS Access-Accept packet no longer carries a
QoS Class or it's invalid, or the supplicant is otherwise no longer present on the port, the port's QoS Class is immediately reverted to the original QoS Class
(which may be changed by the administrator in the meanwhile without affecting the RADIUS-assigned).
This option is only available for single-client modes, i.e.
Port-based 802.1X
Single 802.1X
RADIUS attributes used in identifying a QoS Class:
The User-Priority-Table attribute defined in RFC4675 forms the basis for identifying the QoS Class in an Access-Accept packet.
Only the first occurrence of the attribute in the packet will be considered, and to be valid, it must follow this rule:
All 8 octets in the attribute's value must be identical and consist of ASCII characters in the range '0' - '7', which translates into the desired QoS Class in the range [0; 7].
• RADIUS-Assigned
VLAN Enabled
When RADIUS-Assigned VLAN is both globally enabled and enabled (checked) for a given port, the switch reacts to VLAN ID information carried in the RADIUS
Access-Accept packet transmitted by the RADIUS server when a supplicant is
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successfully authenticated. If present and valid, the port's Port VLAN ID will be changed to this VLAN ID, the port will be set to be a member of that VLAN ID, and the port will be forced into VLAN unaware mode. Once assigned, all traffic arriving on the port will be classified and switched on the RADIUS-assigned
VLAN ID.
If (re-)authentication fails or the RADIUS Access-Accept packet no longer carries a VLAN ID or it's invalid, or the supplicant is otherwise no longer present on the port, the port's VLAN ID is immediately reverted to the original VLAN ID (which may be changed by the administrator in the meanwhile without affecting the
RADIUS-assigned).
This option is only available for single-client modes, i.e.
Port-based 802.1X
Single 802.1X
For trouble-shooting VLAN assignments, refer the "Monitor→VLANs→VLAN
Membership and VLAN Port" pages. These pages show which modules have
(temporarily) overridden the current Port VLAN configuration.
RADIUS attributes used in identifying a VLAN ID:
RFC2868 and RFC3580 form the basis for the attributes used in identifying a
VLAN ID in an Access-Accept packet. The following criteria are used:
The Tunnel-Medium-Type, Tunnel-Type, and Tunnel-Private-Group-ID attributes must all be present at least once in the Access-Accept packet.
The switch looks for the first set of these attributes that have the same
Tag value and fulfil the following requirements (if Tag == 0 is used, the
Tunnel-Private-Group-ID does not need to include a Tag):
Value of Tunnel-Medium-Type must be set to "IEEE-802" (ordinal 6).
Value of Tunnel-Type must be set to "VLAN" (ordinal 13).
Value of Tunnel-Private-Group-ID must be a string of ASCII chars in the range '0' - '9', which is interpreted as a decimal string representing the VLAN ID. Leading '0's are discarded. The final value must be in the range [1; 4095].
• Guest VLAN Enabled
When Guest VLAN is both globally enabled and enabled (checked) for a given port, the switch considers moving the port into the Guest VLAN according to the rules outlined below.
This option is only available for EAPOL-based modes, i.e.:
Port-based 802.1X
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Single 802.1X
Multi 802.1X
For troubleshooting VLAN assignments, use the "Monitor→VLANs→VLAN
Membership and VLAN Port" pages. These pages show which modules have
(temporarily) overridden the current Port VLAN configuration.
Guest VLAN Operation:
When a Guest VLAN enabled port's link comes up, the switch starts transmitting
EAPOL Request Identity frames. If the number of transmissions of such frames exceeds Max. Reauth. Count and no EAPOL frames have been received, meanwhile, the switch considers entering the Guest VLAN. The interval between transmission of EAPOL Request Identity frames is configured with EAPOL
Timeout. If Allow Guest VLAN if EAPOL Seen is enabled, the port will now be placed in the Guest VLAN. If disabled, the switch will first check its history to see if an EAPOL frame has previously been received on the port (this history is cleared if the port link goes down or the port's Admin State is changed), and if not, the port will be placed in the Guest VLAN. Otherwise it will not move to the
Guest VLAN, but continue transmitting EAPOL Request Identity frames at the rate given by EAPOL Timeout.
Once in the Guest VLAN, the port is considered authenticated, and all attached clients on the port are allowed access on this VLAN. The switch will not transmit an EAPOL Success frame when entering the Guest VLAN.
While in the Guest VLAN, the switch monitors the link for EAPOL frames, and if one such frame is received, the switch immediately takes the port out of the
Guest VLAN and starts authenticating the supplicant according to the port mode.
If an EAPOL frame is received, the port will never be able to go back into the
Guest VLAN if the "Allow Guest VLAN if EAPOL Seen" is disabled.
The current state of the port. It can undertake one of the following values:
■
Globally Disabled: NAS is globally disabled.
■
Link Down: NAS is globally enabled, but there is no link on the port.
■
Authorized: The port is in Force Authorized or a single-supplicant mode and the supplicant is authorized.
■
Unauthorized: The port is in Force Unauthorized or a single-supplicant mode and the supplicant is not successfully authorized by the RADIUS server.
■
X Auth/Y Unauth: The port is in a multi-supplicant mode. Currently X clients are authorized and Y are unauthorized.
Two buttons are available for each row. The buttons are only enabled when
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authentication is globally enabled and the port's Admin State is in an
EAPOL-based or MAC-based mode.
Clicking these buttons will not cause settings changed on the page to take effect.
■
Reauthenticate: Schedules a reauthentication to whenever the quiet-period of the port runs out (EAPOL-based authentication). For
MAC-based authentication, reauthentication will be attempted immediately.
The button only has effect for successfully authenticated clients on the port and will not cause the clients to get temporarily unauthorized.
■
Reinitialize: Forces a reinitialization of the clients on the port and thereby a reauthentication immediately. The clients will transfer to the unauthorized state while the reauthentication is in progress.
Buttons
: Click to refresh the page.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.11.4 Network Access Overview
This page provides an overview of the current NAS port states for the selected switch. The Network Access Overview screen in
Figure 4-11-5 appears.
Figure 4-11-5: Network Access Server Switch Status page Screenshot
The page includes the following fields:
Object
• Port
• Admin State
• Port State
• Last Source
• Last ID
• QoS Class
• Port VLAN ID
Description
The switch port number. Click to navigate to detailed NAS statistics for this port.
The port's current administrative state. Refer to NAS Admin State for a description of possible values.
The current state of the port. Refer to NAS Port State for a description of the individual states.
The source MAC address carried in the most recently received EAPOL frame for
EAPOL-based authentication, and the most recently received frame from a new client for MAC-based authentication.
The user name (supplicant identity) carried in the most recently received
Response Identity EAPOL frame for EAPOL-based authentication, and the source MAC address from the most recently received frame from a new client for
MAC-based authentication.
QoS Class assigned to the port by the RADIUS server if enabled.
The VLAN ID that NAS has put the port in. The field is blank, if the Port VLAN ID is not overridden by NAS.
If the VLAN ID is assigned by the RADIUS server, "(RADIUS-assigned)" is appended to the VLAN ID. Read more about RADIUS-assigned VLANs here.
If the port is moved to the Guest VLAN, "(Guest)" is appended to the VLAN ID.
Read more about Guest VLANs here.
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Buttons
: Click to refresh the page immediately.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
4.11.5 Network Access Statistics
This page provides detailed NAS statistics for a specific switch port running EAPOL-based IEEE 802.1X authentication. For
MAC-based ports, it shows selected backend server (RADIUS Authentication Server) statistics, only. Use the port select box to select which port details to be displayed. The Network Access Statistics screen in Figure 4-11-6 appears.
Figure 4-11-6: Network Access Statistics page Screenshot
The page includes the following fields:
Port State
Object
• Admin State
• Port State
• QoS Class
• Port VLAN ID
Description
The port's current administrative state. Refer to NAS Admin State for a description of possible values.
The current state of the port. Refer to NAS Port State for a description of the individual states.
The QoS class assigned by the RADIUS server. The field is blank if no QoS class is assigned.
The VLAN ID that NAS has put the port in. The field is blank, if the Port VLAN ID is not overridden by NAS.
If the VLAN ID is assigned by the RADIUS server, "(RADIUS-assigned)" is appended to the VLAN ID. Read more about RADIUS-assigned VLANs here.
If the port is moved to the Guest VLAN, "(Guest)" is appended to the VLAN ID.
Read more about Guest VLANs here.
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Port Counters
Object
• EAPOL Counters
Description
These supplicant frame counters are available for the following administrative states:
■
Force Authorized
■
Force Unauthorized
■
Port-based 802.1X
■
Single 802.1X
■
Multi 802.1X
Description Direction Name
Rx
Total
IEEE Name
dot1xAuthEapolFrames
Rx
The number of valid EAPOL frames of any type that have been received by the switch.
Rx
Response ID
dot1xAuthEapolRespId
FramesRx
The number of valid EAPOL
Response Identity frames that have been received by the switch.
Rx
Rx
Rx
Rx
Rx
Responses
Start
Logoff
dot1xAuthEapolRespFr amesRx
The number of valid EAPOL response frames (other than
Response Identity frames) that have been received by the switch. dot1xAuthEapolStartFra mesRx
The number of EAPOL Start frames that have been received by the switch. dot1xAuthEapolLogoffFr amesRx
The number of valid EAPOL
Logoff frames that have been received by the switch.
Invalid Type
dot1xAuthInvalidEapolF ramesRx
The number of EAPOL frames that have been received by the switch in which the frame type is not recognized.
Invalid Length
dot1xAuthEapLengthErr orFramesRx
The number of EAPOL frames that have been received by the switch in
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Tx
Total
which the Packet Body
Length field is invalid. dot1xAuthEapolFrames
Tx
The number of EAPOL frames of any type that have been transmitted by the switch.
Tx
Tx
Request ID
Requests
dot1xAuthEapolReqIdFr amesTx
The number of EAPOL
Request Identity frames that have been transmitted by the switch. dot1xAuthEapolReqFra mesTx
The number of valid EAPOL
Request frames (other than
Request Identity frames) that have been transmitted by the switch.
These backend (RADIUS) frame counters are available for the following administrative states:
■
Port-based 802.1X
■
Single 802.1X
■
Multi 802.1X
■
MAC-based Auth.
Description Direction Name
Rx
Access
Challenges
IEEE Name
dot1xAuthBackendAcce ssChallenges
802.1X-based:
Counts the number of times that the switch receives the first request from the backend server following the first response from the supplicant.
Indicates that the backend server has communication with the switch.
MAC-based:
Counts all Access Challenges received from the backend server for this port (left-most table) or client (right-most table).
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Other
Requests
Auth.
Successes
dot1xAuthBackendOther
RequestsToSupplicant dot1xAuthBackendAuth
Successes
802.1X-based:
Counts the number of times that the switch sends an EAP
Request packet following the first to the supplicant.
Indicates that the backend server chose an EAP-method.
MAC-based:
Not applicable.
802.1X- and MAC-based:
Counts the number of times that the switch receives a success indication. Indicates that the supplicant/client has successfully authenticated to the backend server.
Auth.
Failures
dot1xAuthBackendAuth
Fails
Responses
dot1xAuthBackendResp onses
802.1X- and MAC-based:
Counts the number of times that the switch receives a failure message. This indicates that the supplicant/client has not authenticated to the backend server.
802.1X-based:
Counts the number of times that the switch attempts to send a supplicant's first response packet to the backend server. Indicates the switch attempted communication with the backend server. Possible retransmissions are not counted.
MAC-based:
Counts all the backend server packets sent from the switch towards the backend server
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• Last Supplicant/Client
Info
for a given port (left-most table) or client (right-most table). Possible retransmissions are not counted.
Information about the last supplicant/client that attempted to authenticate. This information is available for the following administrative states:
■
Port-based 802.1X
■
Single 802.1X
■
Multi 802.1X
■
MAC-based Auth.
Name
MAC
Address
IEEE Name
dot1xAuthLastEapolF rameSource
Description
The MAC address of the last supplicant/client.
VLAN ID
Version
Identity
- The VLAN ID on which the last frame from the last supplicant/client was received. dot1xAuthLastEapolF rameVersion
-
802.1X-based:
The protocol version number carried in the most recently received EAPOL frame.
MAC-based:
Not applicable.
802.1X-based:
The user name (supplicant identity) carried in the most recently received Response Identity
EAPOL frame.
MAC-based:
Not applicable.
Selected Counters
Object
• Selected Counters
Description
The Selected Counters table is visible when the port is one of the following administrative states:
■
Multi 802.1X
■
MAC-based Auth.
The table is identical to and is placed next to the Port Counters table, and will be empty if
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no MAC address is currently selected. To populate the table, select one of the attached
MAC Addresses from the table below.
Attached MAC Address
Object
• Identity
• MAC Address
• VLAN ID
• State
• Last Authentication
Description
Shows the identity of the supplicant, as received in the Response Identity EAPOL frame.
Clicking the link causes the supplicant's EAPOL and Backend Server counters to be shown in the Selected Counters table. If no supplicants are attached, it shows No supplicants attached.
This column is not available for MAC-based Auth.
For Multi 802.1X, this column holds the MAC address of the attached supplicant.
For MAC-based Auth., this column holds the MAC address of the attached client.
Clicking the link causes the client's Backend Server counters to be shown in the
Selected Counters table. If no clients are attached, it shows No clients attached.
This column holds the VLAN ID that the corresponding client is currently secured through the Port Security module.
The client can either be authenticated or unauthenticated. In the authenticated state, it is allowed to forward frames on the port, and in the unauthenticated state, it is blocked. As long as the backend server hasn't successfully authenticated the client, it is unauthenticated. If an authentication fails for one or the other reason, the client will remain in the unauthenticated state for Hold Time seconds.
Shows the date and time of the last authentication of the client (successful as well as unsuccessful).
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
: This button is available in the following modes:
• Force Authorized
• Force Unauthorized
• Port-based 802.1X
• Single 802.1X
Click to clear the counters for the selected port.
: This button is available in the following modes:
• Multi 802.1X
• MAC-based Auth.X
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Click to clear both the port counters and all of the attached client's counters. The "Last Client" will not be cleared, however.
: This button is available in the following modes:
• Multi 802.1X
• MAC-based Auth.X
Click to clear only the currently selected client's counters.
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4.11.6 RADIUS
This page allows you to configure the RADIUS Servers. The RADIUS Configuration screen in Figure 4-11-7 appears.
Figure 4-11-7: RADIUS Server Configuration page Screenshot
The page includes the following fields:
Global Configuration
These setting are common for all of the RADIUS Servers.
Object
• Timeout
• Retransmit
• Dead Time
• Key
Description
Timeout is the number of seconds, in the range 1 to 1000, to wait for a reply from a RADIUS server before retransmitting the request.
Retransmit is the number of times, in the range from 1 to 1000, a RADIUS request is retransmitted to a server that is not responding. If the server has not responded after the last retransmit it is considered to be dead.
The Dead Time, which can be set to a number between 0 and 3600 seconds, is the period during which the switch will not send new requests to a server that has failed to respond to a previous request. This will stop the switch from continually trying to contact a server that it has already determined as dead.
Setting the Dead Time to a value greater than 0 (zero) will enable this feature, but only if more than one server has been configured.
The secret key - up to 63 characters long - shared between the RADIUS server and the switch.
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• NAS-IP-Address
• NAS-IPv6-Address
• NAS-Identifier
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The IPv4 address to be used as attribute 4 in RADIUS Access-Request packets.
If this field is left blank, the IP address of the outgoing interface is used.
The IPv6 address to be used as attribute 95 in RADIUS Access-Request packets. If this field is left blank, the IP address of the outgoing interface is used.
The identifier - up to 253 characters long - to be used as attribute 32 in RADIUS
Access-Request packets. If this field is left blank, the NAS-Identifier is not included in the packet.
Server Configuration
The table has one row for each RADIUS Server and a number of columns, which are:
Object
• Delete
• Hostname
• Auth Port
• Acct Port
• Timeout
• Retransmit
• Key
Description
To delete a RADIUS server entry, check this box. The entry will be deleted during the next Save.
The IP address or hostname of the RADIUS server.
The UDP port to use on the RADIUS server for authentication.
The UDP port to use on the RADIUS server for accounting.
This optional setting overrides the global timeout value. Leaving it blank will use the global timeout value.
This optional setting overrides the global retransmit value. Leaving it blank will use the global retransmit value.
This optional setting overrides the global key. Leaving it blank will use the global key.
Buttons
: Click to ad d a new RADIUS server. An empty row is added to the table, and the RADIUS server can be configured as needed. Up to 5 servers are supported.
: Click to undo the addition of the new server.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.11.7 TACACS+
This page allows you to configure the TACACS+ Servers. The TACACS+ Configuration screen in Figure 4-11-8 appears.
Figure 4-11-8: TACACS+ Server Configuration page Screenshot
The page includes the following fields:
Global Configuration
These setting are common for all of the TACACS+ Servers.
Object
• Timeout
• Dead Time
• Key
Description
Timeout is the number of seconds, in the range 1 to 1000, to wait for a reply from a TACACS+ server before it is considered to be dead.
The Dead Time, which can be set to a number between 0 to 1440 minutes, is the period during which the switch will not send new requests to a server that has failed to respond to a previous request. This will stop the switch from continually trying to contact a server that it has already determined as dead.
Setting the Deadtime to a value greater than 0 (zero) will enable this feature, but only if more than one server has been configured.
The secret key - up to 63 characters long - shared between the TACACS+ server and the switch.
Server Configuration
The table has one row for each TACACS+ server and a number of columns, which are:
Object Description
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• Delete
• Hostname
• Port
• Timeout
• Key
To delete a TACACS+ server entry, check this box. The entry will be deleted during the next Save.
The IP address or hostname of the TACACS+ server.
The TCP port to use on the TACACS+ server for authentication.
This optional setting overrides the global timeout value. Leaving it blank will use the global timeout value.
This optional setting overrides the global key. Leaving it blank will use the global key.
Buttons
: Click to ad d a new TACACS+ server. An empty row is added to the table, and the
TACACS+ server can be configured as needed. Up to 5 servers are supported.
: Click to undo the addition of the new server.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.11.8 RADIUS Overview
This page provides an overview of the status of the RADIUS servers configurable on the Authentication configuration page. The
RADIUS Authentication/Accounting Server Overview screen in Figure 4-11-9 appears.
Figure 4-11-9: RADIUS Authentication/Accounting Server Overview page Screenshot
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The page includes the following fields:
RADIUS Authentication Server Status Overview
Object
• #
• IP Address
• Status
Description
The RADIUS server number. Click to navigate to detailed statistics for this server.
The IP address and UDP port number (in <IP Address>:<UDP Port> notation) of this server.
The current state of the server. This field takes one of the following values:
Disabled: The server is disabled.
Not Ready: The server is enabled, but IP communication is not yet up and running.
Ready: The server is enabled, IP communication is up and running, and the RADIUS module is ready to accept access attempts.
Dead (X seconds left): Access attempts were made to this server, but it did not reply within the configured timeout. The server has temporarily been disabled, but will get re-enabled when the dead-time expires. The number of seconds left before this occurs is displayed in parentheses. This state is only reachable when more than one server is enabled.
RADIUS Accounting Server Status Overview
Object
• #
• IP Address
• Status
Description
The RADIUS server number. Click to navigate to detailed statistics for this server.
The IP address and UDP port number (in <IP Address>:<UDP Port> notation) of this server.
The current state of the server. This field takes one of the following values:
Disabled: The server is disabled.
Not Ready: The server is enabled, but IP communication is not yet up and running.
Ready: The server is enabled, IP communication is up and running, and the RADIUS module is ready to accept accounting attempts.
Dead (X seconds left): Accounting attempts were made to this server, but it did not reply within the configured timeout. The server has temporarily been disabled, but will get re-enabled when the dead-time expires. The number of seconds left before this occurs is displayed in parentheses. This state is only reachable when more than one server is enabled.
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4.11.9 RADIUS Details
This page provides detailed statistics for a particular RADIUS server. The RADIUS Authentication/Accounting for Server
Overview screen in Figure 4-11-10 appears.
Figure 4-11-10: RADIUS Authentication/Accounting for Server Overview page Screenshot
The page includes the following fields:
RADIUS Authentication Statistics
The statistics map closely to those specified in RFC4668 - RADIUS Authentication Client MIB. Use the server select box to switch between the backend servers to show details for.
Object
• Packet Counters
Description
RADIUS authentication server packet counter. There are seven receive and four transmit counters.
Direction Name RFC4668 Name Description
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Access
Accepts
radiusAuthClientExtA ccessAccepts
The number of RADIUS
Access-Accept packets (valid or invalid) received from the server.
Access Rejects
radiusAuthClientExtA ccessRejects
The number of RADIUS
Access-Reject packets (valid or invalid) received from the server.
Access
Challenges
Malformed
Access
Responses
radiusAuthClientExtA ccessChallenges
The number of RADIUS
Access-Challenge packets
(valid or invalid) received from the server. radiusAuthClientExt
MalformedAccessRe sponses
The number of malformed
RADIUS Access-Response packets received from the server. Malformed packets include packets with an invalid length. Bad authenticators or
Message Authenticator attributes or unknown types are not included as malformed access responses.
Bad
Authenticators
radiusAuthClientExtB adAuthenticators
The number of RADIUS
Access-Response packets containing invalid authenticators or Message
Authenticator attributes received from the server.
Unknown
Types
Packets
Dropped
radiusAuthClientExtU nknownTypes
The number of RADIUS packets that were received from the server on the authentication port and dropped for some other reason. radiusAuthClientExtP acketsDropped
The number of RADIUS packets that were received from the server on the
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Tx
Tx
Tx
Tx
Access
Requests
authentication port and dropped for some other reason. radiusAuthClientExtA ccessRequests
The number of RADIUS
Access-Request packets sent to the server. This does not include retransmissions.
Access
Retransmissio ns
radiusAuthClientExtA ccessRetransmission s
The number of RADIUS
Access-Request packets retransmitted to the RADIUS authentication server.
Pending
Requests
Timeouts
radiusAuthClientExtP endingRequests
The number of RADIUS
Access-Request packets destined for the server that have not yet timed out or received a response. This variable is incremented when an Access-Request is sent and decremented due to receipt of an Access-Accept,
Access-Reject,
Access-Challenge, timeout, or retransmission. radiusAuthClientExtT imeouts
The number of authentication timeouts to the server. After a timeout, the client may retry to the same server, send to a different server, or give up. A retry to the same server is counted as a retransmit as well as a timeout. A send to a different server is counted as a
Request as well as a timeout.
This section contains information about the state of the server and the latest round-trip time.
Name
IP Address
RFC4668 Name
-
Description
IP address and UDP port for the authentication server
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State
Round-Trip
Time
in question.
- radiusAuthClient
ExtRoundTripTim e
Shows the state of the server. It takes one of the following values:
Disabled: The selected server is disabled.
Not Ready: The server is enabled, but IP communication is not yet up and running.
Ready: The server is enabled, IP communication is up and running, and the RADIUS module is ready to accept access attempts.
Dead (X seconds left): Access attempts were made to this server, but it did not reply within the configured timeout. The server has temporarily been disabled, but will get re-enabled when the dead-time expires. The number of seconds left before this occurs is displayed in parentheses.
This state is only reachable when more than one server is enabled.
The time interval (measured in milliseconds) between the most recent Access-Reply/Access-Challenge and the Access-Request that matched it from the RADIUS authentication server. The granularity of this measurement is 100 ms. A value of 0 ms indicates that there hasn't been round-trip communication with the server yet.
RADIUS Accounting Statistics
The statistics map closely to those specified in RFC4670 - RADIUS Accounting Client MIB. Use the server select box to switch between the backend servers to show details for.
Object
• Packet Counters
Description
RADIUS accounting server packet counter. There are five receive and four transmit counters.
Direction Name
Rx
Responses
RFC4670 Name
radiusAccClientExt
Responses
Description
The number of RADIUS packets (valid or invalid) received from the server.
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Malformed
Responses
Bad
Authenticators
radiusAccClientExt
MalformedRespons es
The number of malformed
RADIUS packets received from the server. Malformed packets include packets with an invalid length. Bad authenticators or or unknown types are not included as malformed access responses. radiusAcctClientExt
BadAuthenticators
The number of RADIUS packets containing invalid authenticators received from the server.
Unknown Types
radiusAccClientExt
UnknownTypes
The number of RADIUS packets of unknown types that were received from the server on the accounting port.
Packets Dropped
radiusAccClientExt
PacketsDropped
The number of RADIUS packets that were received from the server on the accounting port and dropped for some other reason.
Requests
radiusAccClientExt
Requests
The number of RADIUS packets sent to the server.
This does not include retransmissions.
Retransmissions
radiusAccClientExt
Retransmissions
The number of RADIUS packets retransmitted to the
RADIUS accounting server.
Pending
Requests
radiusAccClientExt
PendingRequests
The number of RADIUS packets destined for the server that have not yet timed out or received a response. This variable is incremented when a Request is sent and decremented due to receipt of a Response, timeout, or
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Tx
Timeouts
retransmission. radiusAccClientExt
Timeouts
The number of accounting timeouts to the server. After a timeout, the client may retry to the same server, send to a different server, or give up. A retry to the same server is counted as a retransmit as well as a timeout. A send to a different server is counted as a
Request as well as a timeout.
This section contains information about the state of the server and the latest round-trip time.
Name RFC4670 Name
IP Address
-
Description
IP address and UDP port for the accounting server in question.
State
Round-Trip
Time
- radiusAccClientExtRo undTripTime
Shows the state of the server. It takes one of the following values:
Disabled: The selected server is disabled.
Not Ready: The server is enabled, but IP communication is not yet up and running.
Ready: The server is enabled, IP communication is up and running, and the
RADIUS module is ready to accept accounting attempts.
Dead (X seconds left): Accounting attempts were made to this server, but it did not reply within the configured timeout.
The server has temporarily been disabled, but will get re-enabled when the dead-time expires. The number of seconds left before this occurs is displayed in parentheses. This state is only reachable when more than one server is enabled.
The time interval (measured in milliseconds) between the most recent
Response and the Request that matched it from the RADIUS accounting server.
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The granularity of this measurement is
100 ms. A value of 0 ms indicates that there hasn't been round-trip communication with the server yet.
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
: Clears the counters for the selected server. The "Pending Requests" counter will not be cleared by this operation.
4.11.10 Windows Platform RADIUS Server Configuration
Setup the RADIUS server and assign the client IP address to the Managed switch. In this case, field in the default IP Address of the Managed Switch with 192.168.0.100. And also make sure the shared secret key is as same as the one you had set at the Managed Switch’s 802.1x system configuration – 12345678 at this case.
1. Configure the IP Address of remote RADIUS server and secret key.
Figure 4-11-11: RADIUS Server Configuration Screenshot
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2. Add New RADIUS Cleint on the Windows 2003 server
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Figure 4-11-12: Windows Server – Add New RADIUS Client Setting
3. Assign the client IP address to the Managed Switch
Figure 4-11-13: Windows Server RADIUS Server Setting
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4. The shared secret key should be as same as the key configured on the Managed Switch.
Figure 4-11-14: Windows Server RADIUS Server Setting
5. Configure ports attribute of 802.1X, the same as “802.1X Port Configuration”.
Figure 4-11-15: 802.1x Port Configuration
6. Create user data. The establishment of the user data needs to be created on the Radius Server PC. For example, the
Radius Server founded on Win2003 Server, and then:
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Figure 4-11-16: Windows 2003 AD Server Setting Path
7. Enter ” Active Directory Users and Computers”, create legal user data; next, right-click a user what you created to enter properties, and what to be noticed:
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Figure 4-11-17: Add User Properties Screen
Figure 4-11-18: Add User Properties Screen
Set the Port Authenticate Status to “Force Authorized” if the port is connected to the RADIUS server or the port is an uplink port that is connected to another switch. Or once the 802.1X starts to work, the switch might not be able to access the RADIUS server.
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4.11.11 802.1X Client Configuration
Windows XP is originally 802.1X support. As to other operating systems (windows 98SE, ME, 2000), an 802.1X client utility is needed. The following procedures show how to configure 802.1X Authentication in Windows XP.
Please note that if you want to change the 802.1x authentication type of a wireless client, i.e. switch to EAP-TLS from EAP-MD5, you must remove the current existing wireless network from your preferred connection first, and add it in again.
Configure Sample: EAP-MD5 Authentication
1. Go to Start > Control Panel, double-click on “Network Connections”.
2. Right-click on the Local Network Connection.
3. Click “Properties” to open up the Properties setting window.
Figure 4-11-19
4. Select “Authentication” tab.
5. Select “Enable network access control using IEEE 802.1X” to enable 802.1x authentication.
6. Select “MD-5 Challenge” from the drop-down list box for EAP type.
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Figure 4-11-20
7. Click “OK”.
8. When client has associated with the Managed Switch, a user authentication notice appears in system tray. Click on the notice to continue.
Figure 4-11-21: Windows Client Popup Login Request Message
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9. Enter the user name, password and the logon domain that your account belongs.
10. Click “OK” to complete the validation process.
Figure 4-11-22
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4.12 Security
This section is to control the access of the Managed Switch, includes the user access and management control.
The Security page contains links to the following main topics:
Port Limit Control
Access Management
HTTPs / SSH
DHCP Snooping
IP Source Guard
ARP Inspection
4.12.1 Port Limit Control
This page allows you to configure the Port Security Limit Control system and port settings. Limit Control allows for limiting the number of users on a given port. A user is identified by a MAC address and VLAN ID. If Limit Control is enabled on a port, the limit specifies the maximum number of users on the port. If this number is exceeded, an action is taken. The action can be one of the four different actions as described below.
The Limit Control module utilizes a lower-layer module and Port Security module, which manages MAC addresses learnt on the port. The Limit Control configuration consists of two sections, a system- and a port-wide. The Port Limit Control Configuration screen in Figure 4-12-1 appears.
Figure 4-12-1: Port Limit Control Configuration Overview page Screenshot
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The page includes the following fields:
System Configuration
Object
• Mode
• Aging Enabled
• Aging Period
Description
Indicates if Limit Control is globally enabled or disabled on the switchstack. If globally disabled, other modules may still use the underlying functionality, but limit checks and corresponding actions are disabled.
If checked, secured MAC addresses are subject to aging as discussed under
Aging Period.
If Aging Enabled is checked, then the aging period is controlled with this input. If other modules are using the underlying port security for securing MAC addresses, they may have other requirements to the aging period. The underlying port security will use the shorter requested aging period of all modules that use the functionality.
The Aging Period can be set to a number between 10 and 10,000,000 seconds.
To understand why aging may be desired, consider the following scenario:
Suppose an end-host is connected to a 3rd party switch or hub, which in turn is connected to a port on this switch on which Limit Control is enabled. The end-host will be allowed to forward if the limit is not exceeded. Now suppose that the end-host logs off or powers down. If it wasn't for aging, the end-host would still take up resources on this switch and will be allowed to forward. To overcome this situation, enable aging. With aging enabled, a timer is started once the end-host gets secured. When the timer expires, the switch starts looking for frames from the end-host, and if such frames are not seen within the next Aging
Period, the end-host is assumed to be disconnected, and the corresponding resources are freed on the switch.
Port Configuration
The table has one row for each port on the selected switch in the stack and a number of columns, which are:
Object
• Port
• Mode
Description
The port number for which the configuration below applies.
Controls whether Limit Control is enabled on this port. Both this and the Global
Mode must be set to Enabled for Limit Control to be in effect. Notice that other modules may still use the underlying port security features without enabling Limit
Control on a given port.
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• Action
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The maximum number of MAC addresses that can be secured on this port. This number cannot exceed 1024. If the limit is exceeded, the corresponding action is taken.
The switch is "born" with a total number of MAC addresses from which all ports draw whenever a new MAC address is seen on a Port Security-enabled port.
Since all ports draw from the same pool, it may happen that a configured maximum cannot be granted, if the remaining ports have already used all available MAC addresses.
If Limit is reached, the switch can take one of the following actions:
None: Do not allow more than Limit MAC addresses on the port, but take no further action.
Trap: If Limit + 1 MAC addresses is seen on the port, send an SNMP trap. If
Aging is disabled, only one SNMP trap will be sent, but with Aging enabled, new SNMP traps will be sent every time the limit gets exceeded.
Shutdown: If Limit + 1 MAC addresses is seen on the port, shut down the port. This implies that all secured MAC addresses will be removed from the port, and no new will be learned. Even if the link is physically disconnected and reconnected on the port (by disconnecting the cable), the port will remain shut down. There are three ways to re-open the port:
1) Boot the stack or elect a new masterthe switch,
2) Disable and re-enable Limit Control on the port or the switch,
3) Click the Reopen button.
Trap & Shutdown: If Limit + 1 MAC addresses is seen on the port, both the
"Trap" and the "Shutdown" actions described above will be taken.
This column shows the current state of the port as seen from the Limit Control's point of view. The state takes one of four values:
Disabled: Limit Control is either globally disabled or disabled on the port.
Ready: The limit is not yet reached. This can be shown for all actions.
Limit Reached: Indicates that the limit is reached on this port. This state can only be shown if Action is set to None or Trap.
Shutdown: Indicates that the port is shut down by the Limit Control module.
This state can only be shown if Action is set to Shutdown or Trap &
Shutdown.
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If a port is shutdown by this module, you may reopen it by clicking this button, which will only be enabled if this is the case. For other methods, refer to
Shutdown in the Action section.
Note, that clicking the reopen button causes the page to be refreshed, so non-committed changes will be lost.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
: Click to refresh the page. Note that non-committed changes will be lost.
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4.12.2 Access Management
Configure access management table on this page. The maximum entry number is 16. If the application's type match any one of the access management entries, it will allow access to the switch. The Access Management Configuration screen in Figure
4-12-2 appears.
Figure 4-12-2: Access Management Configuration Overview page Screenshot
The page includes the following fields:
Object
• Mode
• Delete
• VLAN ID
• Start IP address
• End IP address
• HTTP/HTTPS
• SNMP
• TELNET/SSH
Description
Indicates the access management mode operation. Possible modes are:
Enabled: Enable access management mode operation.
Disabled: Disable access management mode operation.
Check to delete the entry. It will be deleted during the next apply .
Indicates the VLAN ID for the access management entry.
Indicates the start IP address for the access management entry.
Indicates the end IP address for the access management entry.
Indicates the host can access the switch from HTTP/HTTPS interface that the host IP address matched the entry.
Indicates the host can access the switch from SNMP interface that the host IP address matched the entry.
Indicates the host can access the switch from TELNET/SSH interface that the host IP address matched the entry.
Buttons
: Click to add a new access management entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.12.3 Access Management Statistics
This page provides statistics for access management. The Access Management Statistics screen in Figure 4-12-3 appears.
Figure 4-12-3: Access Management Statistics Overview page Screenshot
The page includes the following fields:
Object
• Interface
• Receive Packets
Description
The interface that allowed remote host can access the switch.
• Allow Packets
• Discard Packets
The received packets number from the interface under access management mode is enabled.
The allowed packets number from the interface under access management mode is enabled.
The discarded packets number from the interface under access management mode is enabled.
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
: Clears all statistics.
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4.12.4 HTTPs
Configure HTTPS on this page. The HTTPS Configuration screen in Figure 4-12-4 appears.
Figure 4-12-4: HTTPS Configuration Screen page Screenshot
The page includes the following fields:
Object
• Mode
• Automatic Redirect
Description
Indicates the HTTPS mode operation. When the current connection is HTTPS, to apply HTTPS disabled mode operation will automatically redirect web browser to an HTTP connection. Possible modes are:
Enabled: Enable HTTPS mode operation.
Disabled: Disable HTTPS mode operation.
Indicates the HTTPS redirect mode operation. It only significant if HTTPS mode
"Enabled" is selected. Automatically redirects web browser to an HTTPS connection when both HTTPS mode and Automatic Redirect are enabled or redirects web browser to an HTTP connection when both are disabled. Possible modes are:
Enabled: Enable HTTPS redirect mode operation.
Disabled: Disable HTTPS redirect mode operation.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.12.5 SSH
Configure SSH on this page. This page shows the Port Security status. Port Security is a module with no direct configuration.
Configuration comes indirectly from other modules - the user modules. When a user module has enabled port security on a port, the port is set-up for software-based learning. In this mode, frames from unknown MAC addresses are passed on to the port security module, which in turn asks all user modules whether to allow this new MAC address to forward or block it. For a MAC address to be set in the forwarding state, all enabled user modules must unanimously agree on allowing the MAC address to forward. If only one chooses to block it, it will be blocked until that user module decides otherwise.
The status page is divided into two sections - one with a legend of user modules and one with the actual port status. The SSH
Configuration screen in Figure 4-12-5 appears.
Figure 4-12-5: SSH Configuration Screen page Screenshot
The page includes the following fields:
Object
• Mode
Description
Indicates the SSH mode operation. Possible modes are:
Enabled: Enable SSH mode operation.
Disabled: Disable SSH mode operation.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.12.6 Port Security Status
This page shows the Port Security status. Port Security is a module with no direct configuration. Configuration comes indirectly from other modules - the user modules. When a user module has enabled port security on a port, the port is set-up for software-based learning. In this mode, frames from unknown MAC addresses are passed on to the port security module, which in turn asks all user modules whether to allow this new MAC address to forward or block it. For a MAC address to be set in the forwarding state, all enabled user modules must unanimously agree on allowing the MAC address to forward. If only one chooses to block it, it will be blocked until that user module decides otherwise.
The status page is divided into two sections - one with a legend of user modules and one with the actual port status. The Port
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Security Status screen in Figure 4-12-6 appears.
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Figure 4-12-6: Port Security Status Screen page Screenshot
The page includes the following fields:
User Module Legend
The legend shows all user modules that may request Port Security services.
Object
• User Module Name
• Abbr
Description
The full name of a module that may request Port Security services.
A one-letter abbreviation of the user module. This is used in the Users column in the port status table.
Port Status
The table has one row for each port on the selected switch in the switch and a number of columns, which are:
Object
• Port
• Users
Description
The port number for which the status applies. Click the port number to see the status for this particular port.
Each of the user modules has a column that shows whether that module has enabled Port Security or not. A '-' means that the corresponding user module is
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not enabled, whereas a letter indicates that the user module abbreviated by that letter has enabled port security.
• State
• MAC Count
(Current, Limit)
Shows the current state of the port. It can take one of four values:
Disabled: No user modules are currently using the Port Security service.
Ready: The Port Security service is in use by at least one user module, and is awaiting frames from unknown MAC addresses to arrive.
Limit Reached: The Port Security service is enabled by at least the Limit
Control user module, and that module has indicated that the limit is reached and no more MAC addresses should be taken in.
Shutdown: The Port Security service is enabled by at least the Limit Control user module, and that module has indicated that the limit is exceeded. No
MAC addresses can be learned on the port until it is administratively re-opened on the Limit Control configuration web page.
The two columns indicate the number of currently learned MAC addresses
(forwarding as well as blocked) and the maximum number of MAC addresses that can be learned on the port, respectively.
If no user modules are enabled on the port, the Current column will show a dash
(-).
If the Limit Control user module is not enabled on the port, the Limit column will show a dash (-).
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Click to refresh the page immediately.
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4.12.7 Port Security Detail
This page shows the MAC addresses secured by the Port Security module. Port Security is a module with no direct configuration. Configuration comes indirectly from other modules - the user modules. When a user module has enabled port security on a port, the port is set-up for software-based learning. In this mode, frames from unknown MAC addresses are passed on to the port security module, which in turn asks all user modules whether to allow this new MAC address to forward or block it. For a MAC address to be set in the forwarding state, all enabled user modules must unanimously agree on allowing the
MAC address to forward. If only one chooses to block it, it will be blocked until that user module decides otherwise. The Port
Security Detail screen in Figure 4-12-7 appears.
Figure 4-12-7: Port Security Detail Screen page Screenshot
The page includes the following fields:
Object
• MAC Address & VLAN
ID
• State
Description
The MAC address and VLAN ID that is seen on this port. If no MAC addresses are learned, a single row stating "No MAC addresses attached" is displayed.
Indicates whether the corresponding MAC address is blocked or forwarding. In the blocked state, it will not be allowed to transmit or receive traffic.
Shows the date and time when this MAC address was first seen on the port.
• Time of Addition
• Age/Hold
If at least one user module has decided to block this MAC address, it will stay in the blocked state until the hold time (measured in seconds) expires.
If all user modules have decided to allow this MAC address to forward, and aging is enabled, the Port Security module will periodically check that this
MAC address still forwards traffic.
If the age period (measured in seconds) expires and no frames have been seen, the MAC address will be removed from the MAC table. Otherwise a new age period will begin.
If aging is disabled or a user module has decided to hold the MAC address indefinitely, a dash (-) will be shown.
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4.12.8 DHCP Snooping
DHCP Snooping is used to block intruder on the untrusted ports of DUT when it tries to intervene by injecting a bogus DHCP reply packet to a legitimate conversation between the DHCP client and server.
Configure DHCP Snooping on this page. The DHCP Snooping Configuration screen in Figure 4-12-8 appears.
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Figure 4-12-8: DHCP Snooping Configuration Screen page Screenshot
The page includes the following fields:
Object
• Snooping Mode
• Port Mode
Configuration
Description
Indicates the DHCP snooping mode operation. Possible modes are:
Enabled: Enable DHCP snooping mode operation. When enable DHCP snooping mode operation, the request DHCP messages will be forwarded to trusted ports and only allowed reply packets from trusted ports.
Disabled: Disable DHCP snooping mode operation.
Indicates the DHCP snooping port mode. Possible port modes are:
Trusted: Configures the port as trusted sources of the DHCP message.
Untrusted: Configures the port as untrusted sources of the DHCP message.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.12.9 Snooping Table
This page display the dynamic IP assigned information after DHCP Snooping mode is disabled. All DHCP clients obtained the dynamic IP address from the DHCP server will be listed in this table except for local VLAN interface IP addresses. Entries in the Dynamic DHCP snooping Table are shown on this page
. The Dynamic DHCP Snooping Table screen in Figure 4-12-9 appears.
Figure 4-12-9: Dynamic DHCP Snooping Table Screen page Screenshot
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: It will use the last entry of the currently displayed table as a basis for the next lookup. When the end is reached the text "No more entries" is shown in the displayed table
: To start over
4.12.10 IP Source Guard Configuration
IP Source Guard is a secure feature used to restrict IP traffic on DHCP snooping untrusted ports by filtering traffic based on the DHCP Snooping Table or manually configured IP Source Bindings. It helps prevent IP spoofing attacks when a host tries to spoof and use the IP address of another host. This page provides IP Source Guard related configuration. The IP Source Guard
Configuration screen in Figure 4-12-10 appears.
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Figure 4-12-10: IP Source Guard Configuration Screen page Screenshot
The page includes the following fields:
Buttons
Object
• Mode of IP Source
Guard Configuration
• Port Mode
Configuration
• Max Dynamic Clients
Description
Enable the Global IP Source Guard or disable the Global IP Source Guard. All configured ACEs will be lost when the mode is enabled.
Specify IP Source Guard is enabled on which ports. Only when both Global Mode and Port Mode on a given port are enabled, IP Source Guard is enabled on this given port.
Specify the maximum number of dynamic clients can be learned on given ports.
This value can be 0, 1, 2 and unlimited. If the port mode is enabled and the value of max dynamic client is equal 0, it means only allow the IP packets forwarding that are matched in static entries on the specific port.
: Click to translate all dynamic entries to static entries.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.12.11 IP Source Guard Static Table
This page provides Static IP Source Guard Table. The Static IP Source Guard Table screen in Figure 4-12-11 appears.
Figure 4-12-11: Static IP Source Guard Table Screen page Screenshot
The page includes the following fields:
Buttons
Object
• Delete
• Port
• VLAN ID
• IP Address
• MAC Address
Description
Check to delete the entry. It will be deleted during the next save.
The logical port for the settings.
The VLAN ID for the settings.
Allowed Source IP address.
Allowed Source MAC address.
: Click to add a new entry to the Static IP Source Guard table.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.12.12 ARP Inspection
ARP Inspection is a secure feature. Several types of attacks can be launched against a host or devices connected to Layer 2 networks by "poisoning" the ARP caches. This feature is used to block such attacks. Only valid ARP requests and responses can go through DUT. This page provides ARP Inspection related configuration. The ARP Inspection Configuration screen in
Figure 4-12-12 appears.
Figure 4-12-12: ARP Inspection Configuration Screen page Screenshot
The page includes the following fields:
Object
• Mode of ARP Inspection
Description
Enable the Global ARP Inspection or disable the Global ARP Inspection.
Configuration
• Port Mode Configuration
Specify ARP Inspection is enabled on which ports. Only when both Global
Mode and Port Mode on a given port are enabled, ARP Inspection is enabled on this given port. Possible modes are:
Enabled: Enable ARP Inspection operation.
Disabled: Disable ARP Inspection operation.
If you want to inspect the VLAN configuration, you have to enable the setting
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of "Check VLAN". The default setting of "Check VLAN" is disabled. When the setting of "Check VLAN" is disabled, the log type of ARP Inspection will refer to the port setting. And the setting of "Check VLAN" is enabled, the log type of
ARP Inspection will refer to the VLAN setting. Possible setting of "Check
VLAN" are:
Enabled: Enable check VLAN operation.
Disabled: Disable check VLAN operation.
Only the Global Mode and Port Mode on a given port are enabled, and the setting of "Check VLAN" is disabled, the log type of ARP Inspection will refer to the port setting. There are four log types and possible types are:
None: Log nothing.
Deny: Log denied entries.
Permit: Log permitted entries.
ALL: Log all entries.
Buttons
: Click to translate all dynamic entries to static entries.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.12.13 ARP Inspection Static Table
This page provides Static ARP Inspection Table. The Static ARP Inspection Table screen in Figure 4-12-13 appears.
Figure 4-12-13: Static ARP Inspection Table Screen page Screenshot
The page includes the following fields:
Object Description
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Buttons
• Delete
• Port
• VLAN ID
• MAC Address
• IP Address
Check to delete the entry. It will be deleted during the next save.
The logical port for the settings.
The VLAN ID for the settings.
Allowed Source MAC address in ARP request packets.
Allowed Source IP address in ARP request packets.
: Click to add a new entry to the Static ARP Inspection table.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.13 Address Table
Switching of frames is based upon the DMAC address contained in the frame. The Managed Switch builds up a table that maps
MAC addresses to switch ports for knowing which ports the frames should go to (based upon the DMAC address in the frame ).
This table contains both static and dynamic entries. The static entries are configured by the network administrator if the administrator wants to do a fixed mapping between the DMAC address and switch ports.
The frames also contain a MAC address (SMAC address ), which shows the MAC address of the equipment sending the frame.
The SMAC address is used by the switch to automatically update the MAC table with these dynamic MAC addresses. Dynamic entries are removed from the MAC table if no frame with the corresponding SMAC address have been seen after a configurable age time.
4.13.1 MAC Table Configuration
The MAC Address Table is configured on this page. Set timeouts for entries in the dynamic MAC Table and configure the static
MAC table here. The MAC Address Table Configuration screen in Figure 4-13-1 appears.
Figure 4-13-1: MAC Address Table Configuration page Screenshot
The page includes the following fields:
Aging Configuration
By default, dynamic entries are removed from the MAC table after 300 seconds. This removal is also called aging.
Object Description
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• Disable Automatic
Aging
• Aging Time
Enables/disables the the automatic aging of dynamic entries
The time after which a learned entry is discarded. By default, dynamic entries are removed from the MAC after 300 seconds. This removal is also called aging.
(Range: 10-10000000 seconds; Default: 300 seconds)
MAC Table Learning
If the learning mode for a given port is grayed out, another module is in control of the mode, so that it cannot be changed by the user. An example of such a module is the MAC-Based Authentication under 802.1X.
Object
• Auto
• Disable
• Secure
Description
Learning is done automatically as soon as a frame with unknown SMAC is received.
No learning is done.
Only static MAC entries are learned, all other frames are dropped.
Note: Make sure that the link used for managing the switch is added to the Static
Mac Table before changing to secure learning mode, otherwise the management link is lost and can only be restored by using another non-secure port or by connecting to the switch via the serial interface.
Static MAC Table Configuration
The static entries in the MAC table are shown in this table. The static MAC table can contain 64 entries. The MAC table is sorted first by VLAN ID and then by MAC address.
Buttons
Object
• Delete
• VLAN ID
• MAC Address
• Port Members
• Adding a New Static
Entry
Description
Check to delete the entry. It will be deleted during the next save.
The VLAN ID of the entry.
The MAC address of the entry.
Checkmarks indicate which ports are members of the entry. Check or uncheck as needed to modify the entry.
Click to add a new entry to the static MAC table.
Specify the VLAN ID, MAC address, and port members for the new entry. Click
"Save".
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.13.2 MAC Address Table Status
Dynamic MAC Table
Entries in the MAC Table are shown on this page. The MAC Table contains up to 8192 entries, and is sorted first by VLAN ID, then by MAC address. The MAC Address Table screen in Figure 4-13-2 appears.
Figure 4-13-2: MAC Address Table Status page Screenshot
Navigating the MAC Table
Each page shows up to 999 entries from the MAC table, default being 20, selected through the "entries per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the MAC Table. The first displayed will be the one with the lowest VLAN ID and the lowest MAC address found in the MAC Table.
The "Start from MAC address" and "VLAN" input fields allow the user to select the starting point in the MAC Table.
Clicking the “Refresh” button will update the displayed table starting from that or the closest next MAC Table match.
In addition, the two input fields will - upon a “Refresh” button click - assume the value of the first displayed entry, allowing for continuous refresh with the same start address.
The “
>>
” will use the last entry of the currently displayed VLAN/MAC address pairs as a basis for the next lookup. When the end is reached the text "no more entries" is shown in the displayed table. Use the “
|<<
” button to start over.
The page includes the following fields:
Object
•
Type
•
VLAN
•
MAC Address
•
Port Members
Description
Indicates whether the entry is a static or dynamic entry.
The VLAN ID of the entry.
The MAC address of the entry.
The ports that are members of the entry.
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Buttons
Auto-refresh : Automatic refresh occurs every 3 seconds.
: Refreshes the displayed table starting from the "Start from MAC address" and "VLAN" input fields.
: Flushes all dynamic entries.
: Updates the table starting from the first entry in the MAC Table, i.e. the entry with the lowest VLAN ID and MAC address.
: Updates the table, starting with the entry after the last entry currently displayed.
4.13.3 Dynamic ARP Inspection Table
Entries in the Dynamic ARP Inspection Table are shown on this page. The Dynamic ARP Inspection Table contains up to 1024 entries, and is sorted first by port, then by VLAN ID, then by MAC address, and then by IP address. The Dynamic ARP
Inspection Table screen in Figure 4-13-3 appears.
Figure 4-13-3: Dynamic ARP Inspection Table Screenshot
Navigating the ARP Inspection Table
Each page shows up to 99 entries from the Dynamic ARP Inspection table, default being 20, selected through the "entries per
page" input field. When first visited, the web page will show the first 20 entries from the beginning of the Dynamic ARP
Inspection Table.
The "Start from port address", "VLAN", "MAC address" and "IP address" input fields allow the user to select the starting point in the Dynamic ARP Inspection Table. Clicking the “Refresh” button will update the displayed table starting from that or the closest next Dynamic ARP Inspection Table match. In addition, the two input fields will - upon a “Refresh” button click - assume the value of the first displayed entry, allowing for continuous refresh with the same start address.
The “
>>
” will use the last entry of the currently displayed as a basis for the next lookup. When the end is reached the text "No more entries" is shown in the displayed table. Use the “
|<<
” button to start over. The page includes the following fields:
Object
•
Port
Description
The port number for which the status applies. Click the port number to see the
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•
VLAN ID
•
MAC Address
•
IP Address
status for this particular port.
The VLAN ID of the entry.
The MAC address of the entry.
The IP address of the entry.
Buttons
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Refreshes the displayed table starting from the "Start from MAC address" and "VLAN" input fields.
: Flushes all dynamic entries.
: Updates the table starting from the first entry in the MAC Table, i.e. the entry with the lowest VLAN ID and MAC address.
: Updates the table, starting with the entry after the last entry currently displayed.
4.13.4 Dynamic IP Source Guard Table
Entries in the Dynamic IP Source Guard Table are shown on this page. The Dynamic IP Source Guard Table is sorted first by port, then by VLAN ID, then by IP address, and then by IP mask. The Dynamic IP Source Guard Table screen in Figure 4-13-4 appears.
Figure 4-13-4: Dynamic IP Source Guard Table Screenshot
Navigating the ARP Inspection Table
Each page shows up to 99 entries from the Dynamic IP Source Guard table, default being 20, selected through the "entries per
page" input field. When first visited, the web page will show the first 20 entries from the beginning of the Dynamic IP Source
Guard Table.
The "Start from port address", "VLAN", "IP address" and "IP mask" input fields allow the user to select the starting point in the
Dynamic IP Source Guard Table. Clicking the “Refresh” button will update the displayed table starting from that or the closest
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next Dynamic IP Source Guard Table match. In addition, the two input fields will - upon a “Refresh” button click - assume the value of the first displayed entry, allowing for continuous refresh with the same start address.
The “
>>
” will use the last entry of the currently displayed as a basis for the next lookup. When the end is reached the text "No more entries" is shown in the displayed table. Use the “
|<<
” button to start over. The page includes the following fields:
Object
•
Port
Buttons
•
VLAN ID
•
IP Address
•
MAC Address
Description
The port number for which the status applies. Click the port number to see the status for this particular port.
The VLAN ID of the entry.
The IP address of the entry.
The MAC address of the entry.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Refreshes the displayed table starting from the "Start from MAC address" and "VLAN" input fields.
: Flushes all dynamic entries.
: Updates the table starting from the first entry in the MAC Table, i.e. the entry with the lowest VLAN ID and MAC address.
: Updates the table, starting with the entry after the last entry currently displayed.
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4.14 LLDP
4.14.1 Link Layer Discovery Protocol
Link Layer Discovery Protocol (LLDP) is used to discover basic information about neighboring devices on the local broadcast domain. LLDP is a Layer 2 protocol that uses periodic broadcasts to advertise information about the sending device. Advertised information is represented in Type Length Value (TLV) format according to the IEEE 802.1ab standard, and can include details such as device identification, capabilities and configuration settings. LLDP also defines how to store and maintain information gathered about the neighboring network nodes it discovers.
Link Layer Discovery Protocol - Media Endpoint Discovery (LLDP-MED) is an extension of LLDP intended for managing endpoint devices such as Voice over IP phones and network switches. The LLDP-MED TLVs advertise information such as network policy, power, inventory, and device location details. LLDP and LLDP-MED information can be used by SNMP applications to simplify troubleshooting, enhance network management, and maintain an accurate network topology.
4.14.2 LLDP Configuration
This page allows the user to inspect and configure the current LLDP port settings. The LLDP Configuration screen in Figure
4-14-1 appears.
Figure 4-14-1: LLDP Configuration page Screenshot
The page includes the following fields:
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LLDP Parameters
Object
•
Tx Interval
•
Tx Hold
•
Tx Delay
•
Tx Reinit
Description
The switch is periodically transmitting LLDP frames to its neighbors for having the network discovery information up-to-date. The interval between each LLDP frame is determined by the Tx Interval value. Valid values are restricted to 5 -
32768 seconds.
Default: 30 seconds
This attribute must comply with the following rule:
(Transmission Interval * Hold Time Multiplier) ≤65536, and Transmission Interval
>= (4 * Delay Interval)
Each LLDP frame contains information about how long the information in the
LLDP frame shall be considered valid. The LLDP information valid period is set to
Tx Hold multiplied by Tx Interval seconds. Valid values are restricted to 2 - 10 times.
TTL in seconds is based on the following rule:
(Transmission Interval * Holdtime Multiplier)
≤ 65536.
Therefore, the default TTL is 4*30 = 120 seconds.
If some configuration is changed (e.g. the IP address) a new LLDP frame is transmitted, but the time between the LLDP frames will always be at least the value of Tx Delay seconds. Tx Delay cannot be larger than 1/4 of the Tx Interval value. Valid values are restricted to 1 - 8192 seconds.
This attribute must comply with the rule:
(4 * Delay Interval) ≤Transmission Interval
When a port is disabled, LLDP is disabled or the switch is rebooted a LLDP shutdown frame is transmitted to the neighboring units, signaling that the LLDP information isn't valid anymore. Tx Reinit controls the amount of seconds between the shutdown frame and a new LLDP initialization. Valid values are restricted to 1 - 10 seconds.
LLDP Port Configuration
The LLDP port settings relate to the currently selected stack unit, as reflected by the page header.
Object
•
Port
•
Mode
Description
The switch port number of the logical LLDP port.
Select LLDP mode.
Rx only The switch will not send out LLDP information, but LLDP information from neighbor units is analyzed.
Tx only The switch will drop LLDP information received from neighbors, but
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will send out LLDP information.
Disabled The switch will not send out LLDP information, and will drop LLDP information received from neighbors.
Enabled The switch will send out LLDP information, and will analyze LLDP information received from neighbors.
• CDP Aware
Select CDP awareness.
The CDP operation is restricted to decoding incoming CDP frames (
The switch doesn't transmit CDP frames
). CDP frames are only decoded if LLDP on the port is enabled.
Only CDP TLVs that can be mapped to a corresponding field in the LLDP neighbours' table are decoded. All other TLVs are discarded (Unrecognized CDP
TLVs and discarded CDP frames are not shown in the LLDP statistics.). CDP
TLVs are mapped onto LLDP neighbours' table as shown below.
CDP TLV "Device ID" is mapped to the LLDP "Chassis ID" field.
CDP TLV "Address" is mapped to the LLDP "Management Address" field.
The CDP address TLV can contain multiple addresses, but only the first address is shown in the LLDP neighbours table.
CDP TLV "Port ID" is mapped to the LLDP "Port ID" field.
CDP TLV "Version and Platform" is mapped to the LLDP "System
Description" field.
Both the CDP and LLDP support "system capabilities", but the CDP capabilities cover capabilities that are not part of the LLDP. These capabilities are shown as
"others" in the LLDP neighbours' table.
If all ports have CDP awareness disabled the switch forwards CDP frames
Buttons
received from neighbour devices. If at least one port has CDP awareness enabled all CDP frames are terminated by the switch.
Note: When CDP awareness on a port is disabled the CDP information isn't removed immediately, but gets removed when the hold time is exceeded.
•
Port Description
Optional TLV: When checked the "port description" is included in LLDP information transmitted.
•
System Name
Optional TLV: When checked the "system name" is included in LLDP information transmitted.
•
System Description
Optional TLV: When checked the "system description" is included in LLDP information transmitted.
• System Capabilities
Optional TLV: When checked the "system capability" is included in LLDP information transmitted.
• Management Address
Optional TLV: When checked the "management address" is included in LLDP information transmitted.
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: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.14.3 LLDP MED Configuration
This page allows you to configure the LLDP-MED. The LLDPMED Configuration screen in Figure 4-14-2 appears.
Figure 4-14-2: LLDPMED Configuration page Screenshot
The page includes the following fields:
Fast start repeat count
Object Description
•
Fast start repeat count
Rapid startup and Emergency Call Service Location Identification Discovery of endpoints is a critically important aspect of VoIP systems in general. In addition, it is best to advertise only those pieces of information which are specifically relevant to particular endpoint types (for example only advertise the voice network policy to permitted voice-capable devices), both in order to conserve the limited LLDPU space and to reduce security and system integrity issues that can come with inappropriate knowledge of the network policy.
With this in mind LLDP-MED defines an LLDP-MED Fast Start interaction
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between the protocol and the application layers on top of the protocol, in order to achieve these related properties. Initially, a Network Connectivity Device will only transmit LLDP TLVs in an LLDPDU. Only after an LLDP-MED Endpoint Device is detected, will an LLDP-MED capable Network Connectivity Device start to advertise LLDP-MED TLVs in outgoing LLDPDUs on the associated port. The
LLDP-MED application will temporarily speed up the transmission of the
LLDPDU to start within a second, when a new LLDP-MED neighbour has been detected in order share LLDP-MED information as fast as possible to new neighbours.
Because there is a risk of an LLDP frame being lost during transmission between neighbours, it is recommended to repeat the fast start transmission multiple times to increase the possibility of the neighbours receiving the LLDP frame. With Fast
start repeat count it is possible to specify the number of times the fast start transmission would be repeated. The recommended value is 4 times, given that 4
LLDP frames with a 1 second interval will be transmitted, when an LLDP frame with new information is received.
It should be noted that LLDP-MED and the LLDP-MED Fast Start mechanism is only intended to run on links between LLDP-MED Network Connectivity Devices and Endpoint Devices, and as such does not apply to links between LAN infrastructure elements, including Network Connectivity Devices, or other types of links.
Coordinates Location
Object
• Latitude
• Longitude
• Altitude
Description
Latitude SHOULD be normalized to within 0-90 degrees with a maximum of 4 digits.
It is possible to specify the direction to either North of the equator or South of the equator.
Longitude SHOULD be normalized to within 0-180 degrees with a maximum of 4 digits.
It is possible to specify the direction to either East of the prime meridian or West of the prime meridian.
Altitude SHOULD be normalized to within -32767 to 32767 with a maximum of 4 digits.
It is possible to select between two altitude types (floors or meters).
Meters: Representing meters of Altitude defined by the vertical datum specified.
Floors: Representing altitude in a form more relevant in buildings which have different floor-to-floor dimensions. An altitude = 0.0 is meaningful even outside a
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building, and represents ground level at the given latitude and longitude. Inside a building, 0.0 represents the floor level associated with ground level at the main entrance.
The Map Datum used for the coordinates given in this Option
WGS84: (Geographical 3D) - World Geodesic System 1984, CRS Code
4327, Prime Meridian Name: Greenwich.
NAD83/NAVD88: North American Datum 1983, CRS Code 4269, Prime
Meridian Name: Greenwich; The associated vertical datum is the North
American Vertical Datum of 1988 (NAVD88). This datum pair is to be used when referencing locations on land, not near tidal water (which would use
Datum = NAD83/MLLW).
NAD83/MLLW: North American Datum 1983, CRS Code 4269, Prime
Meridian Name: Greenwich; The associated vertical datum is Mean Lower
Low Water (MLLW). This datum pair is to be used when referencing locations on water/sea/ocean.
Civic Address Location
IETF Geopriv Civic Address based Location Configuration Information (Civic Address LCI).
Object
• Country code
Description
The two-letter ISO 3166 country code in capital ASCII letters - Example: DK, DE or US.
• State
• County
• City
National subdivisions (state, canton, region, province, prefecture).
County, parish, gun (Japan), district.
City, township, shi (Japan) - Example: Copenhagen
• City district
City division, borough, city district, ward, chou (Japan)
• Block (Neighborhood)
Neighborhood, block
• Street
• Leading street
Street - Example: Poppelvej
Leading street direction - Example: N
direction
• Trailing street suffix
• Street suffix
• House no.
• House no. suffix
• Landmark
• Additional location
info
• Name
• Zip code
Trailing street suffix - Example: SW
Street suffix - Example: Ave, Platz
House number - Example: 21
House number suffix - Example: A, 1/2
Landmark or vanity address - Example: Columbia University
Additional location info - Example: South Wing
Name (residence and office occupant) - Example: Flemming Jahn
Postal/zip code - Example: 2791
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• Building
• Apartment
• Floor
• Room no.
• Place type
• Postal community
name
• P.O. Box
• Additional code
Building (structure) - Example: Low Library
Unit (Apartment, suite) - Example: Apt 42
Floor - Example: 4
Room number - Example: 450F
Place type - Example: Office
Postal community name - Example: Leonia
Post office box (P.O. BOX) - Example: 12345
Additional code - Example: 1320300003
Emergency Call Service
Emergency Call Service (e.g. E911 and others), such as defined by TIA or NENA.
Object
• Emergency Call
Service
Description
Emergency Call Service ELIN identifier data format is defined to carry the ELIN identifier as used during emergency call setup to a traditional CAMA or ISDN trunk-based PSAP. This format consists of a numerical digit string, corresponding to the ELIN to be used for emergency calling.
Policies
Network Policy Discovery enables the efficient discovery and diagnosis of mismatch issues with the VLAN configuration, along with the associated Layer 2 and Layer 3 attributes, which apply for a set of specific protocol applications on that port. Improper network policy configurations are a very significant issue in VoIP environments that frequently result in voice quality degradation or loss of service.
Policies are only intended for use with applications that have specific 'real-time’ network policy requirements, such as interactive voice and/or video services.
The network policy attributes advertised are:
1. Layer 2 VLAN ID (IEEE 802.1Q-2003)
2. Layer 2 priority value (IEEE 802.1D-2004)
3. Layer 3 Diffserv code point (DSCP) value (IETF RFC 2474)
This network policy is potentially advertised and associated with multiple sets of application types supported on a given port.
The application types specifically addressed are:
1. Voice
2. Guest Voice
3. Softphone Voice
4. Video Conferencing
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5. Streaming Video
6. Control / Signaling (conditionally support a separate network policy for the media types above)
A large network may support multiple VoIP policies across the entire organization, and different policies per application type.
LLDP-MED allows multiple policies to be advertised per port, each corresponding to a different application type. Different ports on the same Network Connectivity Device may advertise different sets of policies, based on the authenticated user identity or port configuration.
It should be noted that LLDP-MED is not intended to run on links other than between Network Connectivity Devices and
Endpoints, and therefore does not need to advertise the multitude of network policies that frequently run on an aggregated link interior to the LAN.
Object
• Delete
• Policy ID
• Application Type
Description
Check to delete the policy. It will be deleted during the next save.
ID for the policy. This is auto generated and shall be used when selecting the polices that shall be mapped to the specific ports.
Intended use of the application types:
Voice - for use by dedicated IP Telephony handsets and other similar appliances supporting interactive voice services. These devices are typically deployed on a separate VLAN for ease of deployment and enhanced security by isolation from data applications.
Voice Signaling (conditional) - for use in network topologies that require a different policy for the voice signaling than for the voice media. This application type should not be advertised if all the same network policies apply as those advertised in the Voice application policy.
Guest Voice - support a separate 'limited feature-set' voice service for guest users and visitors with their own IP Telephony handsets and other similar appliances supporting interactive voice services.
Guest Voice Signaling (conditional) - for use in network topologies that require a different policy for the guest voice signaling than for the guest voice media. This application type should not be advertised if all the same network policies apply as those advertised in the Guest
Voice application policy.
Softphone Voice - for use by softphone applications on typical data centric devices, such as PCs or laptops. This class of endpoints frequently does not support multiple VLANs, if at all, and are typically configured to use an 'untagged’ VLAN or a single 'tagged’ data specific
VLAN. When a network policy is defined for use with an 'untagged’
VLAN (see Tagged flag below), then the L2 priority field is ignored and
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• Tag
• VLAN ID
• L2 Priority
• DSCP
• Adding a new policy only the DSCP value has relevance.
Video Conferencing - for use by dedicated Video Conferencing equipment and other similar appliances supporting real-time interactive video/audio services.
Streaming Video - for use by broadcast or multicast based video content distribution and other similar applications supporting streaming video services that require specific network policy treatment. Video applications relying on TCP with buffering would not be an intended use of this application type.
Video Signaling (conditional) - for use in network topologies that require a separate policy for the video signaling than for the video media. This application type should not be advertised if all the same network policies apply as those advertised in the Video Conferencing application policy.
Tag indicating whether the specified application type is using a 'tagged’ or an
'untagged’ VLAN.
Untagged indicates that the device is using an untagged frame format and as such does not include a tag header as defined by IEEE
802.1Q-2003. In this case, both the VLAN ID and the Layer 2 priority fields are ignored and only the DSCP value has relevance.
Tagged indicates that the device is using the IEEE 802.1Q tagged frame format, and that both the VLAN ID and the Layer 2 priority values are being used, as well as the DSCP value. The tagged format includes an additional field, known as the tag header. The tagged frame format also includes priority tagged frames as defined by IEEE
802.1Q-2003.
VLAN identifier (VID) for the port as defined in IEEE 802.1Q-2003
L2 Priority is the Layer 2 priority to be used for the specified application type. L2
Priority may specify one of eight priority levels (0 through 7), as defined by IEEE
802.1D-2004. A value of 0 represents use of the default priority as defined in
IEEE 802.1D-2004.
DSCP value to be used to provide Diffserv node behavior for the specified application type as defined in IETF RFC 2474. DSCP may contain one of 64 code point values (0 through 63). A value of 0 represents use of the default
DSCP value as defined in RFC 2475.
Click to add a new policy. Specify the Application type,
Tag, VLAN ID, L2 Priority and DSCP for the new policy. Click "Save".
The number of policies supported is 32
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Port Policies Configuration
Every port may advertise a unique set of network policies or different attributes for the same network policies, based on the authenticated user identity or port configuration.
Object
• Port
• Policy ID
Description
The port number for which the configuration applies.
The set of policies that shall apply for a given port. The set of policies is selected by checkmarking the checkboxes that corresponds to the policies
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.14.4 LLDP-MED Neighbor
This page provides a status overview for all LLDP-MED neighbors. The displayed table contains a row for each port on which an
LLDP neighbor is detected. The LLDP-MED Neighbor Information screen in Figure 4-14-3 appears. The columns hold the following information:
Figure 4-14-3: LLDP-MED Neighbor Information page Screenshot
The page includes the following fields:
Fast start repeat count
Object
• Port
Description
The port on which the LLDP frame was received.
• Device Type
LLDP-MED Devices are comprised of two primary Device Types: Network
Connectivity Devices and Endpoint Devices.
LLDP-MED Network Connectivity Device Definition
LLDP-MED Network Connectivity Devices, as defined in TIA-1057, provide
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access to the IEEE 802 based LAN infrastructure for LLDP-MED Endpoint
Devices. An LLDP-MED Network Connectivity Device is a LAN access device based on any of the following technologies:
1. LAN Switch/Router
2. IEEE 802.1 Bridge
3. IEEE 802.3 Repeater (included for historical reasons)
4. IEEE 802.11 Wireless Access Point
5. Any device that supports the IEEE 802.1AB and MED extensions defined by
TIA-1057 and can relay IEEE 802 frames via any method.
LLDP-MED Endpoint Device Definition
Within the LLDP-MED Endpoint Device category, the LLDP-MED scheme is broken into further Endpoint Device Classes, as defined in the following.
Each LLDP-MED Endpoint Device Class is defined to build upon the capabilities defined for the previous Endpoint Device Class. Fore-example will any
LLDP-MED Endpoint Device claiming compliance as a Media Endpoint (Class II) also support all aspects of TIA-1057 applicable to Generic Endpoints (Class I), and any LLDP-MED Endpoint Device claiming compliance as a Communication
Device (Class III) will also support all aspects of TIA-1057 applicable to both
Media Endpoints (Class II) and Generic Endpoints (Class I).
LLDP-MED Generic Endpoint (Class I)
The LLDP-MED Generic Endpoint (Class I) definition is applicable to all endpoint products that require the base LLDP discovery services defined in TIA-1057, however do not support IP media or act as an end-user communication appliance. Such devices may include (but are not limited to) IP Communication
Controllers, other communication related servers, or any device requiring basic services as defined in TIA-1057.
Discovery services defined in this class include LAN configuration, device location, network policy, power management, and inventory management.
LLDP-MED Media Endpoint (Class II)
The LLDP-MED Media Endpoint (Class II) definition is applicable to all endpoint products that have IP media capabilities however may or may not be associated with a particular end user. Capabilities include all of the capabilities defined for the previous Generic Endpoint Class (Class I), and are extended to include aspects related to media streaming. Example product categories expected to adhere to this class include (but are not limited to) Voice / Media Gateways,
Conference Bridges, Media Servers, and similar.
Discovery services defined in this class include media-type-specific network layer policy discovery.
LLDP-MED Communication Endpoint (Class III)
The LLDP-MED Communication Endpoint (Class III) definition is applicable to all
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endpoint products that act as end user communication appliances supporting IP media. Capabilities include all of the capabilities defined for the previous Generic
Endpoint (Class I) and Media Endpoint (Class II) classes, and are extended to include aspects related to end user devices. Example product categories expected to adhere to this class include (but are not limited to) end user communication appliances, such as IP Phones, PC-based softphones, or other communication appliances that directly support the end user.
Discovery services defined in this class include provision of location identifier
(including ECS / E911 information), embedded L2 switch support, inventory management
LLDP-MED Capabilities describes the neighbor unit's LLDP-MED capabilities.
The possible capabilities are:
1. LLDP-MED capabilities
2. Network Policy
3. Location Identification
4. Extended Power via MDI - PSE
5. Extended Power via MDI - PD
6. Inventory
7. Reserved
Application Type indicating the primary function of the application(s) defined for this network policy, advertised by an Endpoint or Network Connectivity Device.
The possible application types are shown below.
Voice - for use by dedicated IP Telephony handsets and other similar appliances supporting interactive voice services. These devices are typically deployed on a separate VLAN for ease of deployment and enhanced security by isolation from data applications.
Voice Signaling - for use in network topologies that require a different policy for the voice signaling than for the voice media.
Guest Voice - to support a separate limited feature-set voice service for guest users and visitors with their own IP Telephony handsets and other similar appliances supporting interactive voice services.
Guest Voice Signaling - for use in network topologies that require a different policy for the guest voice signaling than for the guest voice media.
Softphone Voice - for use by softphone applications on typical data centric devices, such as PCs or laptops.
Video Conferencing - for use by dedicated Video Conferencing equipment and other similar appliances supporting real-time interactive video/audio services.
Streaming Video - for use by broadcast or multicast based video content distribution and other similar applications supporting streaming video
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• Policy
• TAG
• VLAN ID
• Priority
• DSCP
• Auto-negotiation
• Auto-negotiation
status
services that require specific network policy treatment. Video applications relying on TCP with buffering would not be an intended use of this application type.
Video Signaling - for use in network topologies that require a separate policy for the video signaling than for the video media.
Policy indicates that an Endpoint Device wants to explicitly advertise that the policy is required by the device. Can be either Defined or Unknown
Unknown: The network policy for the specified application type is currently unknown.
Defined: The network policy is defined.
TAG is indicating whether the specified application type is using a tagged or an untagged VLAN. Can be Tagged ot Untagged
Untagged: The device is using an untagged frame format and as such does not include a tag header as defined by IEEE 802.1Q-2003.
Tagged: The device is using the IEEE 802.1Q tagged frame format
VLAN ID is the VLAN identifier (VID) for the port as defined in IEEE
802.1Q-2003. A value of 1 through 4094 is used to define a valid VLAN ID. A value of 0 (Priority Tagged) is used if the device is using priority tagged frames as defined by IEEE 802.1Q-2003, meaning that only the IEEE 802.1D priority level is significant and the default PVID of the ingress port is used instead.
Priority is the Layer 2 priority to be used for the specified application type.One of eight priority levels (0 through 7)
DSCP is the DSCP value to be used to provide Diffserv node behavior for the specified application type as defined in IETF RFC 2474. Contain one of 64 code point values (0 through 63).
Auto-negotiation identifies if MAC/PHY auto-negotiation is supported by the link partner.
Auto-negotiation status identifies if auto-negotiation is currently enabled at the link partner. If Auto-negotiation is supported and Auto-negotiation status is disabled, the 802.3 PMD operating mode will be determined the operational MAU type field value rather than by auto-negotiation.
Auto-negotiation Capabilities shows the link partners MAC/PHY capabilities.
Buttons
• Auto-negotiation
Capabilities
: Click to refresh the page immediately.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
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4.14.5 Neighbor
This page provides a status overview for all LLDP neighbors. The displayed table contains a row for each port on which an
LLDP neighbor is detected. The LLDP Neighbor Information screen in Figure 4-14-4 appears.
Figure 4-14-4: LLDP Neighbor Information page Screenshot
The page includes the following fields:
Object
• Local Port
• Chassis ID
• Port ID
• Port Description
Description
The port on which the LLDP frame was received.
The Chassis ID is the identification of the neighbor's LLDP frames.
The Port ID is the identification of the neighbor port.
Port Description is the port description advertised by the neighbor unit.
• System Name
System Name is the name advertised by the neighbor unit.
• System Capabilities
System Capabilities describes the neighbor unit's capabilities. The possible capabilities are:
1. Other
2. Repeater
3. Bridge
4. WLAN Access Point
5. Router
6. Telephone
7. DOCSIS cable device
8. Station only
9. Reserved
When a capability is enabled, the capability is followed by (+). If the capability is disabled, the capability is followed by (-).
• Management Address
Management Address is the neighbor unit's address that is used for higher layer entities to assist the discovery by the network management. This could for instance hold the neighbor's IP address.
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4.14.6 Port Statistics
This page provides an overview of all LLDP traffic. Two types of counters are shown. Global counters are counters that refer to the whole stack, switch, while local counters refers to counters for the currently selected switch. The LLDP Statistics screen in
Figure 4-14-5 appears.
The page includes the following fields:
Global Counters
Figure 4-14-5: LLDP Statistics page Screenshot
Object
•
Neighbor entries were last changed
•
Total Neighbors
Entries Added
•
Total Neighbors
Entries Deleted
•
Total Neighbors
Entries Dropped
•
Total Neighbors
Entries Aged Out
Description
It also shows the time when the last entry was last deleted or added. It also shows the time elapsed since the last change was detected.
Shows the number of new entries added since switch reboot.
Shows the number of new entries deleted since switch reboot.
Shows the number of LLDP frames dropped due to that the entry table was full.
Shows the number of entries deleted due to Time-To-Live expiring.
LLDP Statistics Local Counters
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The displayed table contains a row for each port. The columns hold the following information:
Object
•
Local Port
•
Tx Frames
•
Rx Frames
•
Rx Errors
•
Frames Discarded
• TLVs Discarded
• TLVs Unrecognized
• Org. Discarded
• Age-Outs
Description
The port on which LLDP frames are received or transmitted.
The number of LLDP frames transmitted on the port.
The number of LLDP frames received on the port.
The number of received LLDP frames containing some kind of error.
If an LLDP frame is received on a port, and the switch's internal table has run full, the LLDP frame is counted and discarded. This situation is known as "Too Many
Neighbors" in the LLDP standard. LLDP frames require a new entry in the table when the Chassis ID or Remote Port ID is not already contained within the table.
Entries are removed from the table when a given port links down, an LLDP shutdown frame is received, or when the entry ages out.
Each LLDP frame can contain multiple pieces of information, known as TLVs
(TLV is short for "Type Length Value"). If a TLV is malformed, it is counted and discarded.
The number of well-formed TLVs, but with an unknown type value.
The number of organizationally TLVs received.
Each LLDP frame contains information about how long time the LLDP information is valid (age-out time). If no new LLDP frame is received within the age out time, the LLDP information is removed, and the Age-Out counter is incremented.
Buttons
: Click to refresh the page immediately.
: Clears the local counters. All counters (including global counters) are cleared upon reboot.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
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4.15 Network Diagnostics
This section provide the Physical layer and IP layer network diagnostics tools for troubleshoot. The diagnostic tools are designed for network manager to help them quickly diagnose problems between point to point and better service customers.
Use the Diagnostics menu items to display and configure basic administrative details of the Managed Switch. Under System the following topics are provided to configure and view the system information:
This section has the following items:
Ping
IPv6 Ping
Remote IP Ping
Cable Diagnostics
PING
The ping and IPv6 ping allow you to issue ICMP PING packets to troubleshoot IP connectivity issues. The Managed Switch transmit ICMP packets, and the sequence number and roundtrip time are displayed upon reception of a reply.
Cable Diagnostics
The Cable Diagnostics performing tests on copper cables. These functions have the ability to identify the cable length and operating conditions, and to isolate a variety of common faults that can occur on the Cat5 twisted-pair cabling. There might be two statuses as follow:
If the link is established on the twisted-pair interface in 1000BASE-T mode, the Cable Diagnostics can run without disruption of the link or of any data transfer.
If the link is established in 100BASE-TX or 10BASE-T, the Cable Diagnostics cause the link to drop while the diagnostics are running.
After the diagnostics are finished, the link is reestablished. And the following functions are available.
Coupling between cable pairs.
Cable pair termination
Cable Length
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4.15.1 Ping
This page allows you to issue ICMP PING packets to troubleshoot IP connectivity issues.
After you press “Start”, 5 ICMP packets are transmitted, and the sequence number and roundtrip time are displayed upon reception of a reply. The page refreshes automatically until responses to all packets are received, or until a timeout occurs. The
ICMP Ping screen in Figure 4-15-1 appears.
The page includes the following fields:
Figure 4-15-1: ICMP Ping page Screenshot
Object
•
IP Address
• Ping Length
Description
The destination IP Address.
The payload size of the ICMP packet. Values range from 2 bytes to 1452 bytes.
Be sure the target IP Address is within the same network subnet of the Managed Switch, or you had setup the correct gateway IP address.
Buttons
: Click to transmit ICMP packets.
: Click to re-start diagnostics with PING.
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4.15.2 IPv6 Ping
This page allows you to issue ICMPv6 PING packets to troubleshoot IPv6 connectivity issues.
After you press “Start”, 5 ICMPv6 packets are transmitted, and the sequence number and roundtrip time are displayed upon reception of a reply. The page refreshes automatically until responses to all packets are received, or until a timeout occurs. The
ICMPv6 Ping screen in Figure 4-15-2 appears.
The page includes the following fields:
Figure 4-15-2: ICMPv6 Ping page Screenshot
Object
•
IP Address
• Ping Length
• Egress Interface
Description
The destination IP Address.
The payload size of the ICMP packet. Values range from 2 bytes to 1452 bytes.
The VLAN ID (VID) of the specific egress IPv6 interface which ICMP packet goes. The given VID ranges from 1 to 4094 and will be effective only when the corresponding IPv6 interface is valid. When the egress interface is not given,
PING6 finds the best match interface for destination.
Do not specify egress interface for loopback address.
Do specify egress interface for link-local or multicast address.
Buttons
: Click to transmit ICMP packets.
: Click to re-start diagnostics with PING.
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4.15.3 Remote IP Ping Test
This page allows you to issue ICMP PING packets to troubleshoot IP connectivity issues on special port.
After you press “Test”, 5 ICMP packets are transmitted, and the sequence number and roundtrip time are displayed upon reception of a reply. The page refreshes automatically until responses to all packets are received, or until a timeout occurs. The
ICMP Ping screen in Figure 4-15-3 appears.
Figure 4-15-3: Remote IP Ping Test page Screenshot
The page includes the following fields:
Buttons
Object
• Port
•
Remote IP Address
•
Ping Size
•
Result
Description
The logical port for the settings.
The destination IP Address.
The payload size of the ICMP packet. Values range from 8 bytes to 1400 bytes.
Display the ping result.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
: Clears the IP Address and the result of ping value.
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4.15.4 Cable Diagnostics
This page is used for running the Cable Diagnostics.
Press to run the diagnostics. This will take approximately 5 seconds. If all ports are selected, this can take approximately 15 seconds. When completed, the page refreshes automatically, and you can view the cable diagnostics results in the cable status table. Note that Cable Diagnostics is only accurate for cables of length 7 - 140 meters.
10 and 100 Mbps ports will be linked down while running cable diagnostic. Therefore, running cable diagnastic on a 10 or 100
Mbps management port will cause the switch to stop responding until VeriPHY is complete. The ports belong to the currently selected stack unit, as reflected by the page header. The VeriPHY Cable Diagnostics screen in Figure 4-15-4 appears.
Figure 4-15-4: VeriPHY Cable Diagnostics page Screenshot
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The page includes the following fields:
Object
•
Port
• Description
•
Cable Status
Description
The port where you are requesting Cable Diagnostics.
Display per port description.
Port:
Port number.
Pair:
The status of the cable pair.
OK - Correctly terminated pair
Open - Open pair
Short - Shorted pair
Short A - Cross-pair short to pair A
Short B - Cross-pair short to pair B
Short C - Cross-pair short to pair C
Short D - Cross-pair short to pair D
Cross A - Abnormal cross-pair coupling with pair A
Cross B - Abnormal cross-pair coupling with pair B
Cross C - Abnormal cross-pair coupling with pair C
Cross D - Abnormal cross-pair coupling with pair D
Length:
The length (in meters) of the cable pair. The resolution is 3 meters
Buttons
: Click to run the diagnostics.
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4.16 Power over Ethernet (SGS-5220-24P2X only)
Providing up to 24 PoE, in-line power interfaces, the SGS-5220-24P2X PoE Switch can easily build a power central-controlled
IP phone system, IP Camera system, AP group for the enterprise. For instance, 24 cameras/APs can be easily installed around the corners of the company for surveillance demands or a wireless roaming environment in the office can be built. Without the power-socket limitation, the SGS-5220-24P2X PoE Switch makes the installation of cameras or WLAN AP easier and more efficient.
Figure 4-16-1: Power over Ethernet Status
4.16.1 Power over Ethernet Powered Device
3~5 watts
Voice over IP phones
Enterprises can install PoE VoIP phones, ATA sand other
Ethernet/non-Ethernet end-devices in the center where UPS is installed for un-interruptible power system and power control system.
6~12 watts
Wireless LAN Access Points
Access points can be installed at museums, sightseeing sites, airports, hotels, campuses, factories, warehouses, etc.
10~12 watts
IP Surveillance
IP cameras can be installed at enterprises, museums, campuses, hospitals, banks, etc. without worrying about electrical outlets.
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PoE Splitter
PoE Splitter split the PoE 56V DC over the Ethernet cable into 5/12V DC power output. It frees the device deployment from restrictions due to power outlet locations, which eliminate the costs for additional AC wiring and reduces the installation time.
High Power PoE Splitter
High PoE Splitter split the PoE 56V DC over the Ethernet cable into 24/12V
DC power output. It frees the device deployment from restrictions due to power outlet locations, which eliminate the costs for additional AC wiring and reduces the installation time.
High Power Speed Dome
Its state-of-the-art design fits in various network environments like traffic centers, shopping malls, railway stations, warehouses, airports and production facilities for the most demanding outdoor surveillance applications. No electricians are needed to install AC sockets.
30 watts
Since the PoE port of SGS-5220-24P2X series supports 52V DC PoE power output, please check and assure the powered device’s (PD) acceptable DC power range is from 52V DC; otherwise, it will damage the PD.
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4.16.2 System Configuration
In a power over Ethernet system, operating power is applied from a power source (PSU or -power supply unit) over the LAN infrastructure to powered devices (PDs), which are connected to ports. Under some conditions, the total output power required by PDs can exceed the maximum available power provided by the PSU. The system may come with a PSU capable of supplying less power than the total potential power consumption of all the PoE ports in the system. In order to maintain the activity of the majority of ports, power management is implemented.
The PSU input power consumption is monitored by measuring voltage and current .The input power consumption is equal to the system’s aggregated power consumption .The power management concept allows all ports to be active and activates additional ports, as long as the aggregated power of the system is lower than the power level at which additional PDs cannot be connected .When this value is exceeded, ports will be deactivated, according to user-defined priorities. The power budget is managed according to the following user-definable parameters: maximum available power, ports priority, maximum allowable power per port.
Reserved Power determined by
There are five modes for configuring how the ports/PDs may reserve power and when to shut down ports.
Classification mode
In this mode each port automatically determines how much power to reserve according to the class the connected PD belongs to, and reserves the power accordingly. Four different port classes exist and one for 4, 7, 15.4 and 30.8 watts.
Class
0
1
2
3
4
Usage
Default
Optional
Optional
Optional
Optional
Range of maximum power used by the PD
0.44 to 12.95 watts
0.44 to 3.84 watts
3.84 to 6.49 watts
6.49 to 12.95 watts (or to 15.4 watts)
12.95 to 25.50 watts (or to 30.8 watts)
Class Description
Classification unimplement
Very low power
Low power
Mid power
High power
1. In this mode the Maximum Power fields have no effect.
2. The PoE chip of PD69012 has been designed to Class level 0 meaning it will be assigned to 15.4 watts in AF mode and 30.8 watts in AT mode under the power limit classification. It is hardware limited.
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Allocation mode
In this mode the user allocates the amount of power that each port may reserve. The allocated/reserved power for each port/PD is specified in the Maximum Power fields. The ports are shut down when total reserved powered exceeds the amount of power that the power supply can deliver.
In this mode the port power will not be turned on if the PD requests more available power.
LLDP mode
In this mode the ports of PoE power are managed and determined by LLDP Media Protocol.
4.16.3 Power Over Ethernet Configuration
This section allows the user to inspect and configure the current PoE configuration settings
, as Figure 4-16-2 appears.
The page includes the following fields:
Figure 4-16-2: PoE Configuration Screenshot
Object
• System PoE Admin
Mode
• PoE Temperature
Protection
• PoE Management
Mode
Description
Allows user to enable or disable PoE function. It will causes all of PoE ports to supply or not supply power.
Allows user to enable or disable PoE Temperature Protection.
There are Six modes for configuring how the ports/PDs may reserve power and when to shut down ports.
Class-Consumption mode: System offers PoE power according to PD real power consumption.
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Buttons
Class-Reserved-Power mode: System reserves PoE power to PD according to PoE class level.
Allocation-Consumption mode: System offers PoE power according to PD real power consumption.
Allocation-Reserved-Power mode: Users are allowed to assign how much
PoE power for each port and system will reserve PoE power to PD.
LLDP-Consumption mode: System offers PoE power according to PD real power consumption.
LLDP-Reserved-Power mode: System reserves PoE power to PD according to LLDP configuration.
• Power Supply Budget
[W]
• Temperature
Threshold
Set limit value of the total PoE port providing power to the PDs.
SGS-5220-24P2X available maximum value is 440watts.
Allows setting over temperature protection threshold value. If Its system temperature is over the threshold then system will lower total PoE power budget automatically.
• PoE Usage Threshold
Allows setting how much PoE power budget could be limited.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
PD Classifications
A PD may be classified by the PSE based on the classification information provided by the PD. The intent of PD classification is to provide information about the maximum power required by the PD during operation. However, to improve power management at the PSE, the PD provides a signature about Class level.
The PD is classified based on power. The classification of the PD is the maximum power that the PD will draw across all input voltages and operational modes.
A PD will return to Class 0 to 4 in accordance with the maximum power draw as specified by Table 4-16-1.
Class Description
Mid power or high power
Class
0
1
2
3
4
Usage
Default
Optional
Optional
Optional
Optional
Range of maximum power used by the PD
12.95 watts (or to 15.4 watts for AF mode)
25.5 watts (or to 30.8 watts for AT mode)
0.44 to 3.84 watts
3.84 to 6.49 watts
6.49 to 12.95 watts (or to 15.4 watts)
12.95 to 25.50 watts (or to 30.8 watts)
Table 4-16-1 Device Class
Very low power
Low power
Mid power
High power
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4.16.4 Port Sequential
This page allows the user to configure the PoE Ports started up interval time
. The PoE Port will start up one by one as
Figure 4-16-3 shows.
Figure 4-16-3: PoE Port Sequential Power Up Interval Configuration Screenshot
The PoE port will start up after the whole system program has finished running.
The page includes the following fields:
Buttons
Object
• Sequential Power up
Option
• Sequential Power up
Interval
• Sequential Power up
Port Option
Description
Allows user to enable or disable Sequential Power up function.
Allows user to configure the PoE Port Start Up interval time.
There are two modes for Starting Up the PoE Port
By Port: The PoE Port will start up by following Port number.
By Priority: The PoE Port will start up by following the PoE Priority.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.16.5 Port Configuration
This section allows the user to inspect and configure the current PoE port settings
as Figure 4-16-4 shows.
Figure 4-16-4: Power over Ethernet Configuration Screenshot
The page includes the following fields:
Object
• PoE Mode
• Schedule
Description
There are three modes for PoE mode.
Enable: enable PoE function..
Disable: disable PoE function.
Schedule: enable PoE function in schedule mode.
Indicates the schedule profile mode. Possible profiles are:
Profile1
Profile2
Profile3
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Profile4
Allows user to select 802.3at or 802.3af compatibility mode. The default value is
802.3at mode.
This function will affect PoE power reservation under the power limit classification only. As in 802.3af mode, the system will reserve a maximum of 15.4W for PD that supports Class3 level. As in IEEE 802.3at mode, the system will reserve
30.8W for PD that supports Class4 level.
From class1 to class3 level in the 802.3at mode, the PoE power will be reserved the same as that in 802.3af mode.
The Priority represents PoE ports priority. There are three levels of power priority named Low, High and Critical.
The priority is used in case the total power consumption is over the total power budget. In this case, the port with the lowest priority will be turned off, and power for the port of higher priority will be offered.
It can limit the port PoE supply wattage. Per port maximum value must be less than 30.8W watts; total ports values must be less than the Power Reservation value. Once power overload is detected, the port will automatically shut down and continue to be in detection mode until Pad’s power consumption is lower than the power limit value.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.16.6 PoE Status
This page allows the user to inspect the total power consumption, total power reserved and current status for all PoE ports. The screen in Figure 4-16-5 appears.
Figure 4-16-5:PoE Status Screenshot
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The page includes the following fields:
Object
• Sequential Power On
Description
Displays the current sequential power on mode.
• System Power Budget
Displays the maximum PoE power budget.
• Operation Mode
• Current Budget
• Current Ports in Use
• Class 1 ~ 4 ports
• Power Consumption
• Reserved Power
(Reserved mode)
• PoE Temperature
Displays the current PoE operation mode.
Displays the current maximum PoE budget.
Displays the current PoE ports in use.
Displays the current PoE class 1 ~ 4 ports.
Dispalys the current power consumption (total watts and percentage)
Shows how much the total power is reserved for all PDs.
Displays the current operating temperature of the first PoE chip unit.
Chipset 1 = port 1 ~ 12; Chipset 2 = port 13 ~ 24
Shows the total watts usage of Managed PoE Switch.
• Current Power
Consumption
• Total Power Reserved
• Temperature 1
• Temperature 2
Shows how much the total power is reserved for all PDs.
Displays the current operating temperature of the first PoE chip unit.
Displays the current operating temperature of the second PoE chip unit.
•
Local Port
•
PD Class
This is the logical port number for this row.
Displays the class of the PD attached to the port, as established by the classification process. Class 0 is the default for PDs. The PD is powered based on PoE Class level if system is working in Classification mode. A PD will return Class to 0 to 4 in accordance with the maximum power draw as specified by
Table 4-16-1
.
The Power Used shows how much power the PD currently is using.
•
Power Used [W]
•
Current Used [mA]
• Priority
• Port Status
• AF / AT Mode
• Total
The Power Used shows how much current the PD currently is using.
The Priority shows the port's priority configured by the user.
The Port Status shows the port's status.
Displays per PoE port operating in 802.3af or 802.3at mode.
Shows the total power and current usage of all PDs.
Buttons
Auto-refresh : Check this box to enable an automatic refresh of the page at regular intervals.
: Click to refresh the page immediately.
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4.16.7 PoE Schedule
This page allows the user to define PoE schedule and schedule power recycle.
PoE Schedule
Besides being used as an IP Surveillance, the Managed PoE switch is certainly applicable to constructing any PoE network including VoIP and Wireless LAN. Under the trend of energy saving worldwide and contributing to the environmental protection on the Earth, the Managed PoE switch can effectively control the power supply besides its capability of giving high watts power.
The “PoE schedule” function helps you to enable or disable PoE power feeding for each PoE port during specified time intervals and it is a powerful function to help SMBs or Enterprises save power and budget.
Scheduled Power Recycling
The Managed PoE switch allows each of the connected PoE IP cameras to reboot in a specific time each week. Therefore, it will reduce the chance of IP camera crash resulting from buffer overflow.
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Figure 4-16-6: PoE Schedule Screenshot
Please press the Add New Rule button to start setting PoE Schedule function. You have to set PoE schedule to profile and then go back to PoE Port Configuration, and select “Schedule” mode from per port “PoE Mode” option. You can then indicate which schedule profile could be applied to the PoE port.
The page includes the following fields:
Object
• Profile
• Week Day
• Start Hour
• Start Min
• End Hour
• End Min
Description
Set the schedule profile mode. Possible profiles are:
Profile1
Profile2
Profile3
Profile4
Allows user to set week day for defining PoE function should be enabled on the day.
Allows user to set what hour does PoE function enables.
Allows user to set what minute does PoE function enables.
Allows user to set what hour does PoE function disables.
Allows user to set what minute does PoE function disables.
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• Reboot Enable
• Reboot Only
Buttons
• Reboot Hour
• Reboot Min
: click to add new rule.
: Click to apply changes
: Check to delete the entry.
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Allows user to enable or disable whole PoE port reboot by PoE reboot schedule.
Please be noticed that if you want to PoE schedule and PoE reboot schedule work at the same time, please use this function, and don’t use Reboot Only function.
This function offers administrator to reboot PoE device at indicate time if administrator has this kind of requirement.
Allows user to reboot PoE function by PoE reboot schedule. Please be noticed that if administrator enable this function, PoE schedule will not to set time to profile. This function just ony for PoE port reset on the indicate time.
Allows user to set what hour PoE reboots. This function only for PoE reboot schedule.
Allows user to set what minute PoE reboots. This function only for PoE reboot schedule.
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4.16.8 LLDP PoE Neighbours
This page provides a status overview for all LLDP PoE neighbors. The displayed table contains a row for each port on which an
LLDP PoE neighbor is detected. The columns hold the following information: The screen in Figure 4-16-78 appears.
Figure 4-16-87: LLDP PoE Neighbour Screenshot
Please note that administrator has to enable LLDP port from LLDP configuration, please refer to the following example (The screen in Figure 4-16-98 appears.) To enable LLDP function from port1 to port3, administrator has to plug a PD that supports
PoE LLDP function, and then administrator is going to see the PoE information of the PD from LLDP.
Figure 4-16-98: LLDP Configuration Screenshot
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4.17 Loop Protection
This chapter describes enabling loop protection function that provides loop protection to prevent broadcast loops in Managed
Switch.
4.17.1 Configuration
This page allows the user to inspect the current Loop Protection configurations, and possibly change them as well; screen in
Figure 4-17-1 appears.
Figure 4-17-1: Loop Protection Configuration page Screenshot
The page includes the following fields:
General Settings
Object
•
Enable Loop
Protection
Description
Controls whether loop protections is enabled (as a whole).
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• Transmission Time
•
Shutdown Time
The interval between each loop protection PDU sent on each port. valid values are 1 to 10 seconds.
The period (in seconds) for which a port will be kept disabled in the event of a loop is detected (and the port action shuts down the port). Valid values are 0 to
604800 seconds (7 days). A value of zero will keep a port disabled (until next device restart).
Port Configuration
Object
•
Port
• Enable
• Action
•
Tx Mode
Description
The switch port number of the port.
Controls whether loop protection is enabled on this switch port.
Configures the action performed when a loop is detected on a port. Valid values are Shutdown Port, Shutdown Port and Log or Log Only.
Controls whether the port is actively generating loop protection PDU's, or whether it is just passively looking for looped PDU's.
Buttons
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
4.17.2 Loop Protection Status
This page displays the loop protection port status of the switch; screen in Figure 4-17-2 appears.
The page includes the following fields:
Figure 4-17-2: Loop Protection Status Screenshot
Object
• Port
Description
The Managed Switch port number of the logical port.
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Buttons
• Action
• Transmit
• Loops
• Status
• Loop
• Time of Last Loop
The currently configured port action.
The currently configured port transmit mode.
The number of loops detected on this port.
The current loop protection status of the port.
Whether a loop is currently detected on the port.
The time of the last loop event detected.
: Click to refresh the page immediately.
Auto-refresh : Check this box to enable an automatic refresh of the page at regular intervals.
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4.18 RMON
RMON is the most important expansion of the standard SNMP. RMON is a set of MIB definitions, used to define standard network monitor functions and interfaces, enabling the communication between SNMP management terminals and remote monitors. RMON provides a highly efficient method to monitor actions inside the subnets.
MIB of RMON consists of 10 groups. The switch supports the most frequently used group 1, 2, 3 and 9:
Statistics: Maintain basic usage and error statistics for each subnet monitored by the agent.
History: Record periodical statistic samples available from statistics.
Alarm: Allow management console users to set any count or integer for sample intervals and alert thresholds for
RMON agent records.
Event: A list of all events generated by RMON agent.
Alarm depends on the implementation of Event. Statistics and History display some current or history subnet statistics. Alarm and Event provide a method to monitor any integer data change in the network, and provide some alerts upon abnormal events
(sending Trap or record in logs).
4.18.1 RMON Alarm Configuration
Configure RMON Alarm table on this page. The entry index key is ID.; screen in Figure 4-18-1 appears.
Figure 4-18-1: RMON Alarm Configuration page Screenshot
The page includes the following fields:
Object
• Delete
• ID
• Interval
• Variable
Description
Check to delete the entry. It will be deleted during the next save.
Indicates the index of the entry. The range is from 1 to 65535.
Indicates the interval in seconds for sampling and comparing the rising and falling threshold. The range is from 1 to 2^31-1.
Indicates the particular variable to be sampled, the possible variables are:
InOctets: The total number of octets received on the interface, including framing characters.
InUcastPkts: The number of uni-cast packets delivered to a higher-layer protocol.
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• Sample Type
• Value
• Startup Alarm
Buttons
• Rising Threshold
• Rising Index
• Falling Threshold
• Falling Index
InNUcastPkts: The number of broad-cast and multi-cast packets delivered to a higher-layer protocol.
InDiscards: The number of inbound packets that are discarded even the packets are normal.
InErrors: The number of inbound packets that contain errors preventing them from being deliverable to a higher-layer protocol.
InUnknownProtos: the number of the inbound packets that is discarded because of the unknown or un-support protocol.
OutOctets: The number of octets transmitted out of the interface , including framing characters.
OutUcastPkts: The number of uni-cast packets that request to transmit.
OutNUcastPkts: The number of broad-cast and multi-cast packets that request to transmit.
OutDiscards: The number of outbound packets that is discarded event the packets are normal.
OutErrors: The number of outbound packets that could not be transmitted because of errors.
OutQLen: The length of the output packet queue (in packets).
The method of sampling the selected variable and calculating the value to be compared against the thresholds, possible sample types are:
Absolute: Get the sample directly.
Delta: Calculate the difference between samples (default).
The value of the statistic during the last sampling period.
The method of sampling the selected variable and calculating the value to be compared against the thresholds, possible sample types are:
RisingTrigger alarm when the first value is larger than the rising threshold.
FallingTrigger alarm when the first value is less than the falling threshold.
RisingOrFallingTrigger alarm when the first value is larger than the rising threshold or less than the falling threshold (default).
Rising threshold value (-2147483648-2147483647).
Rising event index (1-65535).
Falling threshold value (-2147483648-2147483647)
Falling event index (1-65535).
: Click to add a new community entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.18.2 RMON Alarm Status
This page provides an overview of RMON Alarm entries. Each page shows up to 99 entries from the Alarm table, default being
20, selected through the "entries per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the Alarm table. The first displayed will be the one with the lowest ID found in the Alarm table; screen in Figure
4-18-2 appears.
Figure 4-18-2: RMON Alarm Overview page Screenshot
The page includes the following fields:
Object
• ID
• Interval
• Variable
• Sample Type
Description
Indicates the index of Alarm control entry.
Indicates the interval in seconds for sampling and comparing the rising and falling threshold.
Indicates the particular variable to be sampled
The method of sampling the selected variable and calculating the value to be compared against the thresholds.
The value of the statistic during the last sampling period.
The alarm that may be sent when this entry is first set to valid.
Rising threshold value.
Rising event index.
Falling threshold value.
Falling event index.
Buttons
• Value
• Startup Alarm
• Rising Threshold
• Rising Index
• Falling Threshold
• Falling Index
: Click to refresh the page immediately.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Updates the table, starting from the first entry in the Alarm Table, i.e. the entry with the lowest ID.
: Updates the table, starting with the entry after the last entry currently displayed.
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4.18.3 RMON Event Configuration
Configure RMON Event table on this page. The entry index key is ID; screen in Figure 4-18-3 appears.
Figure 4-18-4: RMON Event Configuration page Screenshot
The page includes the following fields:
Object
• Delete
• ID
• Desc
• Type
• Community
• Event Last Time
Description
Check to delete the entry. It will be deleted during the next save.
Indicates the index of the entry. The range is from 1 to 65535.
Indicates this event, the string length is from 0 to 127, default is a null string.
Indicates the notification of the event, the possible types are:
none: The total number of octets received on the interface, including framing characters.
log: The number of uni-cast packets delivered to a higher-layer protocol.
snmptrap: The number of broad-cast and multi-cast packets delivered to a higher-layer protocol.
logandtrap: The number of inbound packets that are discarded even the packets are normal.
Specify the community when trap is sent, the string length is from 0 to 127, default is "public".
Indicates the value of sysUpTime at the time this event entry last generated an event.
Buttons
: Click to add a new community entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.18.4 RMON Event Status
This page provides an overview of RMON Event table entries. Each page shows up to 99 entries from the Event table, default being 20, selected through the "entries per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the Event table. The first displayed will be the one with the lowest Event Index and Log Index found in the Event table table; screen in Figure 4-18-5 appears.
Figure 4-18-5: RMON Event Overview page Screenshot
The page includes the following fields:
Object
• Event Index
• Log Index
• LogTime
• LogDescription
Description
Indicates the index of the event entry.
Indicates the index of the log entry.
Indicates Event log time.
Indicates the Event description.
Buttons
: Click to refresh the page immediately.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Updates the table starting from the first entry in the Alarm Table, i.e. the entry with the lowest ID.
: Updates the table, starting with the entry after the last entry currently displayed.
: Updates the table, starting with the entry after the last entry currently displayed.
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4.18.5 RMON History Configuration
Configure RMON History table on this page. The entry index key is ID; screen in Figure 4-18-6 appears.
Figure 4-18-6: RMON History Configuration page Screenshot
The page includes the following fields:
Object
• Delete
• ID
• Data Source
• Interval
• Buckets
Description
Check to delete the entry. It will be deleted during the next save.
Indicates the index of the entry. The range is from 1 to 65535.
Indicates the port ID which wants to be monitored. If in stacking switch, the value must add 1000*(switch ID-1), for example, if the port is switch 3 port 5, the value is 2005.
Indicates the interval in seconds for sampling the history statistics data. The range is from 1 to 3600, default value is 1800 seconds.
Indicates the maximum data entries associated this History control entry stored in
RMON. The range is from 1 to 3600, default value is 50.
The number of data will be saved in the RMON.
Buttons
• Buckets Granted
: Click to add a new community entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.18.6 RMON History Status
This page provides an detail of RMON history entries; screen in Figure 4-18-7 appears.
Figure 4-18-7: RMON History Overview page Screenshot
The page includes the following fields:
Object
• History Index
• Sample Index
• Sample Start
• Drop
• Octets
• Pkts
• Broadcast
• Multicast
CRC Errors
• Undersize
• Oversize
• Frag.
• Jabb.
• Coll.
Description
Indicates the index of History control entry.
Indicates the index of the data entry associated with the control entry.
The value of sysUpTime at the start of the interval over which this sample was measured.
The total number of events in which packets were dropped by the probe due to lack of resources.
The total number of octets of data (including those in bad packets) received on the network.
The total number of packets (including bad packets, broadcast packets, and multicast packets) received.
The total number of good packets received that were directed to the broadcast address.
The total number of good packets received that were directed to a multicast address.
The total number of packets received that had a length (excluding framing bits, but including FCS octets) of between 64 and 1518 octets, inclusive, but had either a bad Frame Check Sequence (FCS) with an integral number of octets
(FCS Error) or a bad FCS with a non-integral number of octets (Alignment Error).
The total number of packets received that were less than 64 octets.
The total number of packets received that were longer than 1518 octets.
The number of frames which size is less than 64 octets received with invalid
CRC.
The number of frames whose size is larger than 64 octets received with invalid
CRC.
The best estimate of the total number of collisions in this Ethernet segment.
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• Utilization
The best estimate of the mean physical layer network utilization on this interface during this sampling interval, in hundredths of a percent.
Buttons
: Click to refresh the page immediately.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Updates the table, starting from the first entry in the History table, i.e., the entry with the lowest History
Index and Sample Index
: Updates the table, starting with the entry after the last entry currently displayed.
4.18.7 RMON Statistics Configuration
Configure RMON Statistics table on this page. The entry index key is ID; screen in Figure 4-18-8 appears.
Figure 4-18-8: RMON Statistics Configuration page Screenshot
The page includes the following fields:
Object
• Delete
• ID
• Data Source
Description
Check to delete the entry. It will be deleted during the next save.
Indicates the index of the entry. The range is from 1 to 65535.
Indicates the port ID which wants to be monitored. If in stacking switch, the value must add 1000*(switch ID-1), for example, if the port is switch 3 port 5, the value is 2005
Buttons
: Click to add a new community entry.
: Click to apply changes
: Click to undo any changes made locally and revert to previously saved values.
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4.18.8 RMON Statistics Status
This page provides an overview of RMON Statistics entries. Each page shows up to 99 entries from the Statistics table, default being 20, selected through the "entries per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the Statistics table. The first displayed will be the one with the lowest ID found in the Statistics table; screen in
Figure 4-18-9 appears.
Figure 4-18-9: RMON Statistics Status Overview page Screenshot
The page includes the following fields:
Object
• ID
• Data Source (ifIndex)
• Drop
• Octets
• Pkts
• Broadcast
• Multicast
• CRC Errors
• Undersize
• Oversize
• Frag.
• Jabb.
Description
Indicates the index of Statistics entry.
The port ID which wants to be monitored.
The total number of events in which packets were dropped by the probe due to lack of resources.
The total number of octets of data (including those in bad packets) received on the network.
The total number of packets (including bad packets, broadcast packets, and multicast packets) received.
The total number of good packets received that were directed to the broadcast address.
The total number of good packets received that were directed to a multicast address.
The total number of packets received that had a length (excluding framing bits, but including FCS octets) of between 64 and 1518 octets.
The total number of packets received that were less than 64 octets.
The total number of packets received that were longer than 1518 octets.
The number of frames whose size is less than 64 octets received with invalid
CRC.
The number of frames whose size is larger than 64 octets received with invalid
CRC.
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• Coll.
• 64 Bytes
• 65~127
• 128~255
• 256~511
• 512~1023
• 1024~1518
The best estimate of the total number of collisions in this Ethernet segment.
The total number of packets (including bad packets) received that were 64 octets in length.
The total number of packets (including bad packets) received that were between
65 to 127 octets in length.
The total number of packets (including bad packets) received that were between
128 to 255 octets in length.
The total number of packets (including bad packets) received that were between
256 to 511 octets in length.
The total number of packets (including bad packets) received that were between
512 to 1023 octets in length.
The total number of packets (including bad packets) received that were between
1024 to 1518 octets in length.
Buttons
: Click to refresh the page immediately.
Auto-refresh : Check this box to refresh the page automatically. Automatic refresh occurs every 3 seconds.
: Updates the table, starting from the first entry in the Alarm Table, i.e. the entry with the lowest ID.
: Updates the table, starting with the entry after the last entry currently displayed.
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4.19 Stack
Using Stacking, it is possible to connect a number of switches together in a stack, which behaves as a single switch as seen from outside the stack.
Two types of stack topologies are supported:
Ring topology
Chain topology (same as a disconnected ring)
Multiple PLANET SGS-5220 series devices may be connected together to constitute a ring or chain stack topology using the
STX / 10Gbps SFP+ ports as interconnect links. Dedicated stacking features built into SGS-5220 series makes all devices in the stack operate together as a single, much larger switch. Among the stacking features are:
Hardware controlled stack wide learning and continuous automatic MAC table synchronization
Shortest path forwarding, providing low latency and optimal use of stacking link bandwidth
QoS consistency across stack
Single point of management for simple stack administration
Low Cost and Flexible SFP+ stacking solution
Real Plug and Play connectivity
The following figure shows an example with five devices in a ring topology stack. Each device in the stack is, in a stack context, called a unit. The ports connecting the units are called stack ports, and the ports connecting to external hosts and switches are called front ports.
Chain Stack: A chain of sample switches, that is, no redundant forwarding paths.
Figure 4-19-1 Chain Stack topology
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Ring Stack: A ring of sample switches, thereby providing redundant forwarding paths.
Figure 4-19-2 Ring Stack topology
Back-to-Back Stack : Two sample switches interconnected on both stacking ports.
Figure 4-19-3 Back to Back Stack topology
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4.19.1 Stack
This section provides information for understand stacking architecture, include the below items:
Switch IDs
• Assigning and Swapping Switch IDs
• Removing a Switch From the Stack
• Replacing a Switch
• General Switch ID Assignment Rules
Master Election
Stack Redundancy
Shortest Path Forwarding
4.19.1.1 Switch IDs
The Switch ID (1-16) assigned to a SGS-5220 Series Switch.
Assigning and Swapping Switch IDs
When a switch is added to the stack, a Switch ID is automatically assigned to the switch. The automatic SID assignment can be modified by choosing a different Switch ID on the Stack Configuration page. This method allows Switch IDs to be assigned so that it is easier for the user to remember the ID of each switch.
The Switch IDs of two switches can be swapped by simply interchanging the values in the Switch ID column.
Changing Switch IDs does not result in any interruption of the stack operation.
Removing a Switch From the Stack
When a switch is removed from the stack, the configuration for the switch is preserved, and the switch still appears on the
Stack Configuration page. If the configuration of the switch is not to be transferred to another switch, then the configuration may be deleted by choosing Delete, followed by "Save".
Replacing a Switch
If a switch is to be replaced with another switch (for example, replacing failing hardware), the following procedure must be used to assign the configuration of the failing switch to the new hardware:
1. Remove the failing switch from the stack. For example, assume that the failing switch had Switch ID 3.
2. Insert the new switch into the stack. The new switch is assigned an unused Switch ID.
3. To remove the automatic switch ID assignment, choose "Delete", followed by "Save". The new switch is then shown with Switch ID set to "-".
4. To assign the configuration of Switch ID 3 to the new hardware, simply choose 3 in the Switch ID column and click
"Save".
5. The new hardware has now taken over the configuration of the failing hardware.
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General Switch ID Assignment Rules
When assigning Switch IDs to the devices in the stack, you must note the following:
1. Switches with assigned IDs can be changed to use any other switch ID (possibly by swapping Switch ID with another active switch).
2. When swapping two Switch IDs, the devices will retain their (own) configuration, except for the Switch ID.
3. Switches without an assigned Switch ID can only be assigned to any unused ID.
4. When assigning a Switch ID of an inactive switch to a new switch, the new switch will inherit the former's configuration (see "Replacing a Switch" above).
5. Deleting a switch will remove any configuration pertaining to it.
6. Deleting an active switch will leave it with an unassigned Switch ID until rebooted or manually assigning a Switch
ID.
4.19.1.2 Master Selection
Within a managed stack, one master switch (or just "master") must be selected. Any switch not being master is a slave switch
(or just "slave").
To elect a master, the following criteria are evaluated sequentially:
1. If any switch already claims to have been master for more than 30 seconds, then that switch will become master.
2. If multiple switches claim to have been master for more than 30 seconds, then the switch which has been master for the longest period of time will become master.
3. The switch with the smallest master priority.
4. The switch with the smallest MAC address.
The above algorithm ensures that once a master has been selected and has been master for more than 30 seconds, it will remain master. However in some cases the user may want to enforce a new master selection.
4.19.1.3 Stack Redundancy
In the unlikely event that a SGS-5220 Series Switch fails in a stack, stack integrity is maintained if the redundant cable is connected to the stack. The affected switch within the sack can be replaced or removed without disrupting normal operation.
The broken link is bypassed and data transmission continues uninterrupted. The single management IP address for the stack is also preserved for uninterrupted management and monitoring.
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Figure 4-19-4 Remove or Replace a switch from the stack
4.19.1.4 Shortest Path Forwarding
The SGS-5220 Switch series supports the shortest path forwarding technology to optimal data flow across the stack. The advantage of the shortest path forwarding as shown below:
Automatic Loop Prevention – Using Time To Live (TTL) information in the stack-header
Utilize all stack links in the ring.
Figure 4-19-5 True Ring Topology
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4.19.2 Stack Configuration
This page is used for configure the stack, including assigning Switch ID, master priority and displaying the current stack member information. The screen in Figure 4-19-6 appears.
Figure 4-19-6 Stack Configuration page screenshot
The page includes the following fields:
Object
•
Delete
•
Stack Member
•
Switch ID
Description
Deletes this switch from the stack configuration.
The MAC address of the switch.
The Switch ID (1-16) assigned to a switch. For more information, see description of Switch IDs
Assigning and Swapping Switch IDs
When a switch is added to the stack, a Switch ID is automatically assigned to the switch. The automatic SID assignment can be modified by choosing a different
Switch ID on the Stack Configuration page. This method allows Switch IDs to be assigned so that it is easier for the user to remember the ID of each switch.
The Switch IDs of two switches can be swapped by simply interchanging the values in the Switch ID column. Changing Switch IDs does not result in any interruption of the stack operation.
Removing a Switch From the Stack
When a switch is removed from the stack, the configuration for the switch is preserved, and the switch still appears on the Stack Configuration page. If the configuration of the switch is not to be transferred to another switch, then the configuration may be deleted by choosing Delete, followed by "Save".
Replacing a Switch
If a switch is to be replaced with another switch (for example, replacing failing hardware), the following procedure must be used to assign the configuration of the failing switch to the new hardware:
1. Remove the failing switch from the stack. For example, assume that the
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•
•
Master Capable
Master Priority
• Stacks Ports
• Switch Status
• Switch Type
• Start Master Election failing switch had Switch ID 3.
2. Insert the new switch into the stack. The new switch is assigned an unused Switch ID.
3. To remove the automatic switch ID assignment, choose "Delete", followed by "Save". The new switch is then shown with Switch ID set to
"-".
4. To assign the configuration of Switch ID 3 to the new hardware, simply choose 3 in the Switch ID column and click "Save".
5. The new hardware has now taken over the configuration of the failing hardware.
General Switch ID Assignment Rules
When assigning Switch IDs to the devices in the stack, you must note the following:
1. Switches with assigned IDs can be changed to use any other switch ID
(possibly by swapping Switch ID with another active switch).
2. When swapping two Switch IDs, the devices will retain their (own) configuration, except for the Switch ID.
3. Switches without an assigned Switch ID can only be assigned to any unused ID.
4. When assigning a Switch ID of an inactive switch to a new switch, the new switch will inherit the former's configuration (see "Replacing a
Switch" above).
5. Deleting a switch will remove any configuration pertaining to it.
6. Deleting an active switch will leave it with an unassigned Switch ID until rebooted or manually assigning a Switch ID.
Indicates whether a switch is capable of being master. An unmanaged switch, for example, will not be Master Capable.
The priority that the switch has in the master election process.
The smaller the priority, the more likely the switch will become master during the master election process.
The stackable port of the switch. In the SGS-5220-24T2X and SGS-5220-24P2X,
STX1 is mapping to Port 27, STX2 is mapping to Port 28. Users can’t modify default stacked port mapping.
Present the switches status:
Active: The switch is alive.
Not Present: The switch is down
The product name of the switch.
By checking this option, the "Save" operation will also start the master election
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process.
This is done by clicking "Start Master Election", followed by "Save". This causes the first two criteria to be ignored, thereby basing master election only on master priority and MAC address. When master election is enforced, the first two criteria are ignored for a period of 10-15 seconds.
Within a managed stack, one master switch (or just "master") must be elected.
Any switch not being master is a slave switch (or just "slave").
To elect a master, the following criteria are evaluated sequentially:
1. If any switch already claims to have been master for more than 30 seconds, then that switch will become master.
2. If multiple switches claim to have been master for more than 30 seconds, then the switch which has been master for the longest period of time will become master.
3. The switch with the smallest master priority.
4. The switch with the smallest MAC address.
The above algorithm ensures that once a master has been elected and has been master for more than 30 seconds, it will remain master. However in some cases the user may want to enforce a new master election. This is done by clicking
"Start Master Election", followed by "Save". This causes the first two criteria to be ignored, thereby basing master election only on master priority and MAC address. When master election is enforced, the first two criteria are ignored for a period of 10-15 seconds. On the Stack State Monitor web page, this is shown by
"Reelect" being set to "Yes" for one of the switches in the stack.
On the Stack State Monitor web page, this is shown by "Reelect" being set to "Yes" for one of the switches in the stack.
Buttons
: Click to save changes.
: Click to undo any changes made locally and revert to previously saved values.
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4.19.3 Stack Information
This page provides an overview of the stack topology, as detected by SPROUT.
Stack Topology
The Stack Topology screen in Figure 4-19-7 appears.
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Figure 4-17-7 Stack Information page screenshot - Stack Topology
The page includes the following fields:
Object
•
Stack Topology
Description
Specifies the type of topology for the stack:
Chain: A chain of switches, that is, no redundant forwarding paths.
Ring: A ring of switches, thereby providing redundant forwarding paths.
Back-to-Back: Two switches interconnected on both stacking ports.
The number of switches in the stack.
•
Stack Member Count
•
Last Topology Change
The time of the last topology change in the stack.
•
Master Switch
•
Last Master Change
The MAC address of the current stack master switch.
The time of the last master change in the stack.
Stack List
For each switch in the stack, the following information is shown: The MAC address, Switch ID, product name and version, and master election state. The master election state is normally "No". Only when a forced master election is enforced by the user, the master election state takes the value "Yes". For details about the master election algorithm, see Stack Configuration.
The Stack List screen in Figure 4-19-8 appears.
Figure 4-19-8 Stack Information page screenshot - Stack List
Master Forwarding Table
As the heading suggests, the information in the table is as seen from the master view.
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For each switch in the stack, the following information is shown:
• The MAC address, switch ID, distance information, and the primary forwarding path to the switch.
• For ring topology, a backup path is also provided.
Figure 4-19-9 Stack Information page screenshot - Master Forwarding Table
4.19.4 Stack Port State Overview
This page provides an overview of the current switch port states. Clicking on the image of a port opens the Port Statistics page.The port states are illustrated as follows:
SWITCH ID
MASTER LED
Stack Port Link status
Port Link status
Stack Port Link status
Figure 4-19-10 Port State Overview page screenshot
4.19.5 Stack Example
Stacking function is convenient for administrator to manage multiple switches by single IP. Basically, you got to have min. 2 units.
The SGS-5220 Series Switch supports auto stack configuration. Once the stack cable is connect to the stack port of each
SGS-5220 Series switch and power on them, the stack is builded automatically and the Switch ID is automatically assigned to the switch. It is also easy to add or delete stackable switch to the stack without service interruption. The key point of the Stack management are:
Identify the Master Switch
Assign / re-assign Switch ID for each management purpose
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Step 1: linking the switches by CB-DASFP-0.5M stack cable.
Step 2: Check the Master LED of each SGS-5220 Series switch to find out the Master Switch that is elected automatically by the stack operation.
Step 3: Use the Web browser such as IE 7.0 to login the Master Switch, the default IP address is 192.168.0.100. Or you can use the PLANET Smart Discovery Utility to find out the IP address of the stack group.
Figure 4-19-11 Use PLANET Smart Discovery Utility to display the IP address of stack master
Step 4: Choose “Stack/Stack Configuration” from menu tree. You can see the Stack was established automatically as the screen appears below:
1.
The Switch ID is automatically assigned to the switches
2.
All switches are with the same Priority value “3”.
3.
The one can’t be deleted is the Stack master.
Figure 4-19-12 Stack Configuration
Example 1: We wish to make the SGS-5220 Series switch with MAC “00-30-4f-b8-e7-c3” / Switch ID=1 swap the Switch ID to 4.
Select the switch with ID=1 and assign a new ID for this unit, for example, ID=4.
Apply the settings to the Apply button.
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Figure 4-19-13 Assigning new ID for current master
Example 2: Currently 00-30-4f-b8-e7-c3 is the master of stack group, and we wish to make the SGS-5220 Series switch with
“MAC:00-30-4f-b8-ee-6f / Priority=1” be the Master Switch of stack group.
Select the target switch and set up with lower priority “1”. After clicking Save, click “Start Master Election” and save again.
Apply the settings to the Apply button.
Figure 4-19-14 Assigning lower priority value for the target switch
View the master status from “Stack/Stack List”; the switch with MAC address “00-30-4f-b8-ee-6f” will become the stack master now.
Figure 4-19-15 The result after master election
Step 6: After the Stack Master and Members have been configured, any switch in the stack can be managed from the web agent by choosing the desired Member ID from the Switch drop-down menu. To connect to a Member switch through the CLI, use the command.
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Figure 4-19-16 To manage the member switch
Slave switch IP will be covered by Master one, and disappear temporarily. The slave IP address can be the same as Master IP address. Thus, if master switch is malfunctioned, you can still access the other switch by the same IP address.
If you have difficulty in selecting another switch, you may be connecting to the slave switch’s web. Please close the browser window, use the “arp –d * ” DOS command to clear the ARP table and then reopen the web.
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5. SWITCH OPERATION
5.1 Address Table
The Managed Switch is implemented with an address table. This address table is composed of many entries. Each entry is used to store the address information of some node in network, including MAC address, port number, etc. This information comes from the learning process of Managed Switch.
5.2 Learning
When one packet comes in from any port, the Managed Switch will record the source address, port number and the other related information in address table. This information will be used to decide either forwarding or filtering for future packets.
5.3 Forwarding & Filtering
When one packet comes from some port of the Managed Switch, it will also check the destination address besides the source address learning. The Managed Switch will look up the address-table for the destination address. If not found, this packet will be forwarded to all the other ports except the port, which this packet comes in. And these ports will transmit this packet to the network it connected. If found, and the destination address is located at a different port from this packet comes in, the Managed
Switch will forward this packet to the port where this destination address is located according to the information from address table. But, if the destination address is located at the same port with this packet comes in, then this packet will be filtered, thereby increasing the network throughput and availability.
5.4 Store-and-Forward
Store-and-Forward is one type of packet-forwarding techniques. A Store-and-Forward Managed Switch stores the incoming frame in an internal buffer, do the complete error checking before transmission. Therefore, no error packets occur and it is the best choice when a network needs efficiency and stability.
The Managed Switch scans the destination address from the packet-header, searches the routing table provided for the incoming port and forwards the packet, only if required. The fast forwarding makes the switch attractive for connecting servers directly to the network, thereby increasing throughput and availability. However, the switch is most commonly used to segment existing hubs, which nearly always improve the overall performance. An Ethernet Switching can be easily configured in any
Ethernet network environment to significantly boost bandwidth using conventional cabling and adapters.
Due to the learning function of the Managed Switch, the source address and corresponding port number of each incoming and outgoing packet are stored in a routing table. This information is subsequently used to filter packets whose destination address is on the same segment as the source address. This confines network traffic to its respective domain and reduce the overall
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load on the network.
The Managed Switch performs "Store and Fforward"; therefore, no error packets occur. More reliably, it reduces the re-transmission rate. No packet loss will occur.
5.5 Auto-Negotiation
The STP ports on the Switch have built-in "Auto-negotiation". This technology automatically sets the best possible bandwidth when a connection is established with another network device (usually at Power On or Reset). This is done by detecting the modes and speeds at the second of both devices are connected. Both 10BASE-T and 100BASE-TX devices can connect with the port in either half- or full-duplex mode. 1000BASE-T can be only connected in full-duplex mode.
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6. TROUBLESHOOTING
This chapter contains information to help you solve issues. If the Managed Switch is not functioning properly, make sure the Managed Switch was set up according to instructions in this manual.
■ The Link LED is not lit
Solution:
Check the cable connection and remove duplex mode of the Managed Switch
■ Some stations cannot talk to other stations located on the other port
Solution:
Please check the VLAN settings, trunk settings, or port enabled/disabled status.
■ Performance is bad
Solution:
Check the full duplex status of the Managed Switch. If the Managed Switch is set to full duplex and the partner is set to half duplex, then the performance will be poor. Please also check the in/out rate of the port.
■ Why the Switch doesn't connect to the network
Solution:
1. Check the LNK/ACT LED on the switch
2. Try another port on the Switch
3. Make sure the cable is installed properly
4. Make sure the cable is the right type
5. Turn off the power. After a while, turn on power again
■ 1000BASE-T port link LED is lit, but the traffic is irregular
Solution:
Check that the attached device is not set to dedicate full duplex. Some devices use a physical or software switch to change duplex modes. Auto-negotiation may not recognize this type of full-duplex setting.
■ Switch does not power up
Solution:
1. AC power cord not inserted or faulty
2. Check that the AC power cord is inserted correctly
3. Replace the power cord If the cord is inserted correctly, check that the AC power source is working by connecting a different device in place of the switch.
4. If that device works, refer to the next step.
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5. If that device does not work, check the AC power
■ The SGS switch series can’t be stacked up well
Solution:
Please install the SFP+ fiber transceiver with true patch cable; any kind of CRC errors will cause the stack function down.
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APPENDIX A: Networking Connection
A.1 PoE RJ45 Port Pin Assignments
PIN NO
1
2
RJ45 POWER ASSIGNMENT
• Power +
• Power +
3
• Power -
6
• Power -
A.2 Switch's Data RJ45 Pin Assignments - 1000Mbps, 1000BASE-T
PIN NO MDI MDI-X
1
2
3
BI_DA+
BI_DA-
BI_DB+
BI_DB+
BI_DB-
BI_DA+
6
7
4
5
BI_DC+
BI_DC-
BI_DB-
BI_DD+
BI_DD+
BI_DD-
BI_DA-
BI_DC+
8 BI_DD- BI_DC-
Implicit implementation of the crossover function within a twisted-pair cable, or at a wiring panel, while not expressly forbidden, is beyond the scope of this standard.
A.3 10/100Mbps, 10/100BASE-TX
When connecting your Switch to another Fast Ethernet switch, a bridge or a hub, a straight or crossover cable is necessary. Each port of the Switch supports auto-MDI/MDI-X detection. That means you can directly connect the Switch to any Ethernet devices without making a crossover cable. The following table and diagram show the standard RJ45 receptacle/connector and their pin assignments:
RJ45 Connector pin assignment
PIN NO
MDI
Media Dependent Interface
MDI-X
Media Dependent Interface-Cross
1
Tx + (transmit) Rx + (receive)
2
Tx - (transmit) Rx - (receive)
3
Rx + (receive) Tx + (transmit)
4, 5
Not used
6
Rx - (receive)
Tx - (transmit)
7, 8
Not used
The standard cable, RJ45 pin assignment
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6
3
2 1
The standard RJ45 receptacle/connector
There are 8 wires on a standard UTP/STP cable and each wire is color-coded. The following shows the pin allocation and color of straight cable and crossover cable connection:
Straight Cable
1 2 3 4 5 6 7 8
SIDE 1
1 2
1 2
1 2
3
Crossover Cable
3 4
3
4
4
5
5
5
6
6
6
7
7
7
8
8
8
SIDE 2
SIDE 1
SIDE 2
SIDE 1
1 = White / Orange
2 = Orange
3 = White / Green
4 = Blue
5 = White / Blue
6 = Green
7 = White / Brown
8 = Brown
SIDE 1
1 = White / Orange
2 = Orange
3 = White / Green
4 = Blue
5 = White / Blue
6 = Green
7 = White / Brown
8 = Brown
SIDE 2
1 = White / Orange
2 = Orange
3 = White / Green
4 = Blue
5 = White / Blue
6 = Green
7 = White / Brown
8 = Brown
SIDE 2
1 = White / Green
2 = Green
3 = White / Orange
4 = Blue
5 = White / Blue
6 = Orange
7 = White / Brown
8 = Brown
Figure A-1: Straight-through and Crossover Cable
Please make sure your connected cables are with the same pin assignment and color as the above picture before deploying the cables into your network.
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APPENDIX B : GLOSSARY
A
ACE
ACE is an acronym for Access Control Entry. It describes access permission associated with a particular ACE ID.
There are three ACE frame types (Ethernet Type, ARP, and IPv4) and two ACE actions (permit and deny). The ACE also contains many detailed, different parameter options that are available for individual application.
ACL
ACL is an acronym for Access Control List. It is the list table of ACEs, containing access control entries that specify individual users or groups permitted or denied to specific traffic objects, such as a process or a program.
Each accessible traffic object contains an identifier to its ACL. The privileges determine whether there are specific traffic object access rights.
ACL implementations can be quite complex, for example, when the ACEs are prioritized for the various situation. In networking, the ACL refers to a list of service ports or network services that are available on a host or server, each with a list of hosts or servers permitted or denied to use the service. ACL can generally be configured to control inbound traffic, and in this context, they are similar to firewalls.
There are 3 web-pages associated with the manual ACL configuration:
ACL|Access Control List: The web page shows the ACEs in a prioritized way, highest (top) to lowest (bottom).
Default the table is empty. An ingress frame will only get a hit on one ACE even though there are more matching ACEs.
The first matching ACE will take action (permit/deny) on that frame and a counter associated with that ACE is incremented. An ACE can be associated with a Policy, 1 ingress port, or any ingress port (the whole switch). If an ACE
Policy is created then that Policy can be associated with a group of ports under the "Ports" web-page. There are number of parameters that can be configured with an ACE. Read the Web page help text to get further information for each of them. The maximum number of ACEs is 64.
ACL|Ports: The ACL Ports configuration is used to assign a Policy ID to an ingress port. This is useful to group ports to obey the same traffic rules. Traffic Policy is created under the "Access Control List" - page. You can you also set up specific traffic properties (Action / Rate Limiter / Port copy, etc) for each ingress port. They will though only apply if the frame gets past the ACE matching without getting matched. In that case a counter associated with that port is incremented. See the Web page help text for each specific port property.
ACL|Rate Limiters: Under this page you can configure the rate limiters. There can be 15 different rate limiters, each
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ranging from 1-1024K packets per seconds. Under "Ports" and "Access Control List" web-pages you can assign a Rate
Limiter ID to the ACE(s) or ingress port(s).
AES
AES is an acronym for Advanced Encryption Standard. The encryption key protocol is applied in 802.1i standard to improve WLAN security. It is an encryption standard by the U.S. government, which will replace DES and 3DES. AES has a fixed block size of 128 bits and a key size of 128, 192, or 256 bits.
AMS
AMS is an acronym for Auto Media Select. AMS is used for dual media ports (ports supporting both copper (cu) and fiber (SFP) cables. AMS automatically determines if a SFP or a CU cable is inserted and switches to the corresponding media. If both SFP and cu cables are inserted, the port will select the prefered media.
APS
APS is an acronym for Automatic Protection Switching. This protocol is used to secure that switching is done bidirectional in the two ends of a protection group, as defined in G.8031.
Aggregation
Using multiple ports in parallel to increase the link speed beyond the limits of a port and to increase the redundancy for higher availability.
(Also Port Aggregation, Link Aggregation).
ARP
ARP is an acronym for Address Resolution Protocol. It is a protocol that used to convert an IP address into a physical address, such as an Ethernet address. ARP allows a host to communicate with other hosts when only the Internet address of its neighbors is known. Before using IP, the host sends a broadcast ARP request containing the Internet address of the desired destination system.
ARP Inspection
ARP Inspection is a secure feature. Several types of attacks can be launched against a host or devices connected to
Layer 2 networks by "poisoning" the ARP caches. This feature is used to block such attacks. Only valid ARP requests and responses can go through the switch device.
Auto-Negotiation
Auto-negotiation is the process where two different devices establish the mode of operation and the speed settings that can be shared by those devices for a link.
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C
CC
CCM
CC is an acronym for Continuity Check. It is a MEP functionality that is able to detect loss of continuity in a network by transmitting CCM frames to a peer MEP.
CCM is an acronym for Continuity Check Message. It is a OAM frame transmitted from a MEP to it's peer MEP and used to implement CC functionality.
CDP
CDP is an acronym for Cisco Discovery Protocol.
D
DEI
DEI is an acronym for Drop Eligible Indicator. It is a 1-bit field in the VLAN tag.
DES
DES is an acronym for Data Encryption Standard. It provides a complete description of a mathematical algorithm for encrypting (enciphering) and decrypting (deciphering) binary coded information.
Encrypting data converts it to an unintelligible form called cipher. Decrypting cipher converts the data back to its original form called plaintext. The algorithm described in this standard specifies both enciphering and deciphering operations which are based on a binary number called a key.
DHCP
DHCP is an acronym for Dynamic Host Configuration Protocol. It is a protocol used for assigning dynamic IP addresses to devices on a network.
DHCP used by networked computers (clients) to obtain IP addresses and other parameters such as the default gateway, subnet mask, and IP addresses of DNS servers from a DHCP server.
The DHCP server ensures that all IP addresses are unique, for example, no IP address is assigned to a second client while the first client's assignment is valid (its lease has not expired). Therefore, IP address pool management is done by the server and not by a human network administrator.
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Dynamic addressing simplifies network administration because the software keeps track of IP addresses rather than requiring an administrator to manage the task. This means that a new computer can be added to a network without the hassle of manually assigning it a unique IP address.
DHCP Relay
DHCP Relay is used to forward and to transfer DHCP messages between the clients and the server when they are not on the same subnet domain.
The DHCP option 82 enables a DHCP relay agent to insert specific information into a DHCP request packets when forwarding client DHCP packets to a DHCP server and remove the specific information from a DHCP reply packets when forwarding server DHCP packets to a DHCP client. The DHCP server can use this information to implement IP address or other assignment policies. Specifically the option works by setting two sub-options: Circuit ID (option 1) and
Remote ID (option2). The Circuit ID sub-option is supposed to include information specific to which circuit the request came in on. The Remote ID sub-option was designed to carry information relating to the remote host end of the circuit.
The definition of Circuit ID in the switch is 4 bytes in length and the format is "vlan_id" "module_id" "port_no". The parameter of "vlan_id" is the first two bytes represent the VLAN ID. The parameter of "module_id" is the third byte for the module ID (in standalone switch it always equal 0, in stackable switch it means switch ID). The parameter of
"port_no" is the fourth byte and it means the port number.
The Remote ID is 6 bytes in length, and the value is equal the DHCP relay agents MAC address.
DHCP Snooping
DHCP Snooping is used to block intruder on the untrusted ports of the switch device when it tries to intervene by injecting a bogus DHCP reply packet to a legitimate conversation between the DHCP client and server.
DNS
DNS is an acronym for Domain Name System. It stores and associates many types of information with domain names.
Most importantly, DNS translates human-friendly domain names and computer hostnames into computer-friendly IP addresses. For example, the domain name www.example.com might translate to 192.168.0.1.
DoS
DoS is an acronym for Denial of Service. In a denial-of-service (DoS) attack, an attacker attempts to prevent legitimate users from accessing information or services. By targeting at network sites or network connection, an attacker may be able to prevent network users from accessing email, web sites, online accounts (banking, etc.), or other services that rely on the affected computer.
Dotted Decimal Notation
Dotted Decimal Notation refers to a method of writing IP addresses using decimal numbers and dots as separators between octets.
An IPv4 dotted decimal address has the form x.y.z.w, where x, y, z, and w are decimal numbers between 0 and 255.
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DSCP
DSCP is an acronym for Differentiated Services Code Point. It is a field in the header of IP packets for packet classification purposes.
E
EEE
EEE is an abbreviation for Energy Efficient Ethernet defined in IEEE 802.3az.
EPS
EPS is an abbreviation for Ethernet Protection Switching defined in ITU/T G.8031.
Ethernet Type
Ethernet Type, or EtherType, is a field in the Ethernet MAC header, defined by the Ethernet networking standard. It is used to indicate which protocol is being transported in an Ethernet frame.
F
FTP
FTP is an acronym for File Transfer Protocol. It is a transfer protocol that uses the Transmission Control Protocol (TCP) and provides file writing and reading. It also provides directory service and security features.
Fast Leave
IGMP snooping Fast Leave processing allows the switch to remove an interface from the forwarding-table entry without first sending out group specific queries to the interface. The VLAN interface is pruned from the multicast tree for the multicast group specified in the original leave message. Fast-leave processing ensures optimal bandwidth management for all hosts on a switched network, even when multiple multicast groups are in use simultaneously.
H
HTTP
HTTP is an acronym for Hypertext Transfer Protocol. It is a protocol that used to transfer or convey information on the
World Wide Web (WWW).
HTTP defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands. For example, when you enter a URL in your browser, this actually sends an HTTP command to the Web server directing it to fetch and transmit the requested Web page. The other main standard that controls how the World Wide Web works is HTML, which covers how Web pages are formatted and displayed.
Any Web server machine contains, in addition to the Web page files it can serve, an HTTP daemon, a program that is designed to wait for HTTP requests and handle them when they arrive. The Web browser is an HTTP client, sending requests to server machines. An HTTP client initiates a request by establishing a Transmission Control Protocol (TCP)
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connection to a particular port on a remote host (port 80 by default). An HTTP server listening on that port waits for the client to send a request message.
HTTPS
HTTPS is an acronym for Hypertext Transfer Protocol over Secure Socket Layer. It is used to indicate a secure HTTP connection.
HTTPS provide authentication and encrypted communication and is widely used on the World Wide Web for security-sensitive communication such as payment transactions and corporate logons.
HTTPS is really just the use of Netscape's Secure Socket Layer (SSL) as a sublayer under its regular HTTP application layering. (HTTPS uses port 443 instead of HTTP port 80 in its interactions with the lower layer, TCP/IP.)
SSL uses a 40-bit key size for the RC4 stream encryption algorithm, which is considered an adequate degree of encryption for commercial exchange.
I
ICMP
ICMP is an acronym for Internet Control Message Protocol. It is a protocol that generated the error response, diagnostic or routing purposes. ICMP messages generally contain information about routing difficulties or simple exchanges such as time-stamp or echo transactions. For example, the PING command uses ICMP to test an Internet connection.
IEEE 802.1X
IEEE 802.1X is an IEEE standard for port-based Network Access Control. It provides authentication to devices attached to a LAN port, establishing a point-to-point connection or preventing access from that port if authentication fails. With 802.1X, access to all switch ports can be centrally controlled from a server, which means that authorized users can use the same credentials for authentication from any point within the network.
IGMP
IGMP is an acronym for Internet Group Management Protocol. It is a communications protocol used to manage the membership of Internet Protocol multicast groups. IGMP is used by IP hosts and adjacent multicast routers to establish multicast group memberships. It is an integral part of the IP multicast specification, like ICMP for unicast connections.
IGMP can be used for online video and gaming, and allows more efficient use of resources when supporting these uses.
IGMP Querier
A router sends IGMP Query messages onto a particular link. This router is called the Querier.
IMAP
IMAP is an acronym for Internet Message Access Protocol. It is a protocol for email clients to retrieve email messages
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from a mail server.
IMAP is the protocol that IMAP clients use to communicate with the servers, and SMTP is the protocol used to transport mail to an IMAP server.
The current version of the Internet Message Access Protocol is IMAP4. It is similar to Post Office Protocol version 3
(POP3), but offers additional and more complex features. For example, the IMAP4 protocol leaves your email messages on the server rather than downloading them to your computer. If you wish to remove your messages from the server, you must use your mail client to generate local folders, copy messages to your local hard drive, and then delete and expunge the messages from the server.
IP
IP is an acronym for Internet Protocol. It is a protocol used for communicating data across a internet network.
IP is a "best effort" system, which means that no packet of information sent over it is assured to reach its destination in the same condition it was sent. Each device connected to a Local Area Network (LAN) or Wide Area Network (WAN) is given an Internet Protocol address, and this IP address is used to identify the device uniquely among all other devices connected to the extended network.
The current version of the Internet protocol is IPv4, which has 32-bits Internet Protocol addresses allowing for in excess of four billion unique addresses. This number is reduced drastically by the practice of webmasters taking addresses in large blocks, the bulk of which remain unused. There is a rather substantial movement to adopt a new version of the Internet Protocol, IPv6, which would have 128-bits Internet Protocol addresses. This number can be represented roughly by a three with thirty-nine zeroes after it. However, IPv4 is still the protocol of choice for most of the Internet.
IPMC
IPMC is an acronym for IP MultiCast.
IP Source Guard
IP Source Guard is a secure feature used to restrict IP traffic on DHCP snooping untrusted ports by filtering traffic based on the DHCP Snooping Table or manually configured IP Source Bindings. It helps prevent IP spoofing attacks when a host tries to spoof and use the IP address of another host.
L
LACP
LLDP
LACP is an IEEE 802.3ad standard protocol. The Link Aggregation Control Protocol, allows bundling several physical ports together to form a single logical port.
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LLDP is an IEEE 802.1ab standard protocol.
The Link Layer Discovery Protocol(LLDP) specified in this standard allows stations attached to an IEEE 802 LAN to advertise, to other stations attached to the same IEEE 802 LAN, the major capabilities provided by the system incorporating that station, the management address or addresses of the entity or entities that provide management of those capabilities, and the identification of the stations point of attachment to the IEEE 802 LAN required by those management entity or entities. The information distributed via this protocol is stored by its recipients in a standard
Management Information Base (MIB), making it possible for the information to be accessed by a Network Management
System (NMS) using a management protocol such as the Simple Network Management Protocol (SNMP).
LLDP-MED
LLDP-MED is an extendsion of IEEE 802.1ab and is defined by the telecommunication industry association
(TIA-1057).
LOC
LOC is an acronym for Loss Of Connectivity and is detected by a MEP and is indicating lost connectivity in the network.
Can be used as a switch criteria by EPS
M
MAC Table
Switching of frames is based upon the DMAC address contained in the frame. The switch builds up a table that maps
MAC addresses to switch ports for knowing which ports the frames should go to ( based upon the DMAC address in the frame ). This table contains both static and dynamic entries. The static entries are configured by the network administrator if the administrator wants to do a fixed mapping between the DMAC address and switch ports.
The frames also contain a MAC address ( SMAC address ), which shows the MAC address of the equipment sending the frame. The SMAC address is used by the switch to automatically update the MAC table with these dynamic MAC addresses. Dynamic entries are removed from the MAC table if no frame with the corresponding SMAC address have been seen after a configurable age time.
MEP
MEP is an acronym for Maintenance Entity Endpoint and is an endpoint in a Maintenance Entity Group (ITU-T Y.1731).
MD5
MD5 is an acronym for Message-Digest algorithm 5. MD5 is a message digest algorithm, used cryptographic hash function with a 128-bit hash value. It was designed by Ron Rivest in 1991. MD5 is officially defined in RFC 1321 - The
MD5 Message-Digest Algorithm.
Mirroring
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For debugging network problems or monitoring network traffic, the switch system can be configured to mirror frames from multiple ports to a mirror port. (In this context, mirroring a frame is the same as copying the frame.)
Both incoming (source) and outgoing (destination) frames can be mirrored to the mirror port.
MLD
MLD is an acronym for Multicast Listener Discovery for IPv6. MLD is used by IPv6 routers to discover multicast listeners on a directly attached link, much as IGMP is used in IPv4. The protocol is embedded in ICMPv6 instead of using a separate protocol.
MVR
Multicast VLAN Registration (MVR) is a protocol for Layer 2 (IP)-networks that enables multicast-traffic from a source
VLAN to be shared with subscriber-VLANs.
The main reason for using MVR is to save bandwidth by preventing duplicate multicast streams being sent in the core network, instead the stream(s) are received on the MVR-VLAN and forwarded to the VLANs where hosts have requested it/them(Wikipedia).
N
NAS
NAS is an acronym for Network Access Server. The NAS is meant to act as a gateway to guard access to a protected source. A client connects to the NAS, and the NAS connects to another resource asking whether the client's supplied credentials are valid. Based on the answer, the NAS then allows or disallows access to the protected resource. An example of a NAS implementation is IEEE 802.1X.
NetBIOS
NetBIOS is an acronym for Network Basic Input/Output System. It is a program that allows applications on separate computers to communicate within a Local Area Network (LAN), and it is not supported on a Wide Area Network (WAN).
The NetBIOS giving each computer in the network both a NetBIOS name and an IP address corresponding to a different host name, provides the session and transport services described in the Open Systems Interconnection (OSI) model.
NFS
NFS is an acronym for Network File System. It allows hosts to mount partitions on a remote system and use them as though they are local file systems.
NFS allows the system administrator to store resources in a central location on the network, providing authorized users continuous access to them, which means NFS supports sharing of files, printers, and other resources as persistent storage over a computer network.
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NTP
NTP is an acronym for Network Time Protocol, a network protocol for synchronizing the clocks of computer systems.
NTP uses UDP (datagrams) as transport layer.
O
OAM
OAM is an acronym for Operation Administration and Maintenance.
It is a protocol described in ITU-T Y.1731 used to implement carrier ethernet functionality. MEP functionality like CC and RDI is based on this.
Optional TLVs.
A LLDP frame contains multiple TLVs
For some TLVs it is configurable if the switch shall include the TLV in the LLDP frame. These TLVs are known as optional TLVs. If an optional TLVs is disabled the corresponding information is not included in the LLDP frame.
OUI
OUI is the organizationally unique identifier. An OUI address is a globally unique identifier assigned to a vendor by
IEEE. You can determine which vendor a device belongs to according to the OUI address which forms the first 24 bits of a MAC address.
P
PCP
PCP is an acronym for Priority Code Point. It is a 3-bit field storing the priority level for the 802.1Q frame. It is also known as User Priority.
PD
PD is an acronym for Powered Device. In a PoE> system the power is delivered from a PSE ( power sourcing equipment ) to a remote device. The remote device is called a PD.
PHY
PHY is an abbreviation for Physical Interface Transceiver and is the device that implement the Ethernet physical layer
(IEEE-802.3).
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PING
Ping is a program that sends a series of packets over a network or the Internet to a specific computer in order to generate a response from that computer. The other computer responds with an acknowledgment that it received the packets. Ping was created to verify whether a specific computer on a network or the Internet exists and is connected. ping
uses Internet Control Message Protocol (ICMP) packets. The PING Request is the packet from the origin computer, and the PING Reply is the packet response from the target.
Policer
A policer can limit the bandwidth of received frames. It is located in front of the ingress queue.
POP3
POP3 is an acronym for Post Office Protocol version 3. It is a protocol for email clients to retrieve email messages from a mail server.
POP3 is designed to delete mail on the server as soon as the user has downloaded it. However, some implementations allow users or an administrator to specify that mail be saved for some period of time. POP can be thought of as a "store-and-forward" service.
An alternative protocol is Internet Message Access Protocol (IMAP). IMAP provides the user with more capabilities for retaining e-mail on the server and for organizing it in folders on the server. IMAP can be thought of as a remote file server.
POP and IMAP deal with the receiving of e-mail and are not to be confused with the Simple Mail Transfer Protocol
(SMTP). You send e-mail with SMTP, and a mail handler receives it on your recipient's behalf. Then the mail is read using POP or IMAP. IMAP4 and POP3 are the two most prevalent Internet standard protocols for e-mail retrieval.
Virtually all modern e-mail clients and servers support both.
PPPoE
PPPoE is an acronym for Point-to-Point Protocol over Ethernet.
It is a network protocol for encapsulating Point-to-Point Protocol (PPP) frames inside Ethernet frames. It is used mainly with ADSL services where individual users connect to the ADSL transceiver (modem) over Ethernet and in plain Metro
Ethernet networks (Wikipedia).
Private VLAN
In a private VLAN, communication between ports in that private VLAN is not permitted. A VLAN can be configured as a private VLAN.
PTP
PTP is an acronym for Precision Time Protocol, a network protocol for synchronizing the clocks of computer systems.
Q
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QCE
QCE is an acronym for QoS Control Entry. It describes QoS class associated with a particular QCE ID.
There are six QCE frame types: Ethernet Type, VLAN, UDP/TCP Port, DSCP, TOS, and Tag Priority. Frames can be classified by one of 4 different QoS classes: "Low", "Normal", "Medium", and "High" for individual application.
QCL
QCL is an acronym for QoS Control List. It is the list table of QCEs, containing QoS control entries that classify to a specific QoS class on specific traffic objects.
Each accessible traffic object contains an identifier to its QCL. The privileges determine specific traffic object to specific
QoS class.
QL
QoS
QL In SyncE this is the Quality Level of a given clock source. This is received on a port in a SSM indicating the quality of the clock received in the port.
QoS is an acronym for Quality of Service. It is a method to guarantee a bandwidth relationship between individual applications or protocols.
A communications network transports a multitude of applications and data, including high-quality video and delay-sensitive data such as real-time voice. Networks must provide secure, predictable, measurable, and sometimes guaranteed services.
Achieving the required QoS becomes the secret to a successful end-to-end business solution. Therefore, QoS is the set of techniques to manage network resources.
QoS class
Every incoming frame is classified to a QoS class, which is used throughout the device for providing queuing, scheduling and congestion control guarantees to the frame according to what was configured for that specific QoS class. There is a one to one mapping between QoS class, queue and priority. A QoS class of 0 (zero) has the lowest priority.
R
RARP
RADIUS
RARP is an acronym for Reverse Address Resolution Protocol. It is a protocol that is used to obtain an IP address for a given hardware address, such as an Ethernet address. RARP is the complement of ARP.
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RADIUS is an acronym for Remote Authentication Dial In User Service. It is a networking protocol that provides centralized access, authorization and accounting management for people or computers to connect and use a network service.
RDI
RDI is an acronym for Remote Defect Indication. It is a OAM functionallity that is used by a MEP to indicate defect detected to the remote peer MEP
Router Port
A router port is a port on the Ethernet switch that leads switch towards the Layer 3 multicast device.
RSTP
In 1998, the IEEE with document 802.1w introduced an evolution of STP: the Rapid Spanning Tree Protocol, which provides for faster spanning tree convergence after a topology change. Standard IEEE 802.1D-2004 now incorporates
RSTP and obsoletes STP, while at the same time being backwards-compatible with STP.
S
SAMBA
Samba is a program running under UNIX-like operating systems that provides seamless integration between UNIX and
Microsoft Windows machines. Samba acts as file and print servers for Microsoft Windows, IBM OS/2, and other SMB client machines. Samba uses the Server Message Block (SMB) protocol and Common Internet File System (CIFS), which is the underlying protocol used in Microsoft Windows networking.
Samba can be installed on a variety of operating system platforms, including Linux, most common Unix platforms,
OpenVMS, and IBM OS/2.
Samba can also register itself with the master browser on the network so that it would appear in the listing of hosts in
Microsoft Windows "Neighborhood Network".
SHA
Shaper
SHA is an acronym for Secure Hash Algorithm. It designed by the National Security Agency (NSA) and published by the NIST as a U.S. Federal Information Processing Standard. Hash algorithms compute a fixed-length digital representation (known as a message digest) of an input data sequence (the message) of any length.
A shaper can limit the bandwidth of transmitted frames. It is located after the ingress queues.
SMTP
SMTP is an acronym for Simple Mail Transfer Protocol. It is a text-based protocol that uses the Transmission Control
Protocol (TCP) and provides a mail service modeled on the FTP file transfer service. SMTP transfers mail messages between systems and notifications regarding incoming mail.
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SNAP
The SubNetwork Access Protocol (SNAP) is a mechanism for multiplexing, on networks using IEEE 802.2 LLC, more protocols than can be distinguished by the 8-bit 802.2 Service Access Point (SAP) fields. SNAP supports identifying protocols by Ethernet type field values; it also supports vendor-private protocol identifier.
SNMP
SNMP is an acronym for Simple Network Management Protocol. It is part of the Transmission Control Protocol/Internet
Protocol (TCP/IP) protocol for network management. SNMP allow diverse network objects to participate in a network management architecture. It enables network management systems to learn network problems by receiving traps or change notices from network devices implementing SNMP.
SNTP
SNTP is an acronym for Simple Network Time Protocol, a network protocol for synchronizing the clocks of computer systems. SNTP uses UDP (datagrams) as transport layer.
SPROUT
Stack Protocol using ROUting Technology. An advanced protocol for almost instantaneous discovery of topology changes within a stack as well as election of a master switch. SPROUT also calculates parameters for setting up each switch to perform shortest path forwarding within the stack.
SSID
Service Set Identifier is a name used to identify the particular 802.11 wireless LANs to which a user wants to attach. A client device will receive broadcast messages from all access points within range advertising their SSIDs, and can choose one to connect to based on pre-configuration, or by displaying a list of SSIDs in range and asking the user to select one (wikipedia).
SSH
SSH is an acronym for Secure SHell. It is a network protocol that allows data to be exchanged using a secure channel between two networked devices. The encryption used by SSH provides confidentiality and integrity of data over an insecure network. The goal of SSH was to replace the earlier rlogin, TELNET and rsh protocols, which did not provide strong authentication or guarantee confidentiality (Wikipedia).
SSM
SSM In SyncE this is an abbreviation for Synchronization Status Message and is containing a QL indication.
STP
Spanning Tree Protocol is an OSI layer-2 protocol which ensures a loop free topology for any bridged LAN. The original STP protocol is now obsoleted by RSTP.
SyncE
SyncE Is an abbreviation for Synchronous Ethernet. This functionality is used to make a network 'clock frequency' synchronized. Not to be confused with real time clock synchronized (IEEE 1588).
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T
TACACS+
TACACS+ is an acronym for Terminal Acess Controller Access Control System Plus. It is a networking protocol which provides access control for routers, network access servers and other networked computing devices via one or more centralized servers. TACACS+ provides separate authentication, authorization and accounting services.
Tag Priority
Tag Priority is a 3-bit field storing the priority level for the 802.1Q frame.
TCP
TCP is an acronym for Transmission Control Protocol. It is a communications protocol that uses the Internet Protocol
(IP) to exchange the messages between computers.
The TCP protocol guarantees reliable and in-order delivery of data from sender to receiver and distinguishes data for multiple connections by concurrent applications (for example, Web server and e-mail server) running on the same host.
The applications on networked hosts can use TCP to create connections to one another. It is known as a connection-oriented protocol, which means that a connection is established and maintained until such time as the message or messages to be exchanged by the application programs at each end have been exchanged. TCP is responsible for ensuring that a message is divided into the packets that IP manages and for reassembling the packets back into the complete message at the other end.
Common network applications that use TCP include the World Wide Web (WWW), e-mail, and File Transfer Protocol
(FTP).
TELNET
TELNET is an acronym for TELetype NETwork. It is a terminal emulation protocol that uses the Transmission Control
Protocol (TCP) and provides a virtual connection between TELNET server and TELNET client.
TELNET enables the client to control the server and communicate with other servers on the network. To start a Telnet session, the client user must log in to a server by entering a valid username and password. Then, the client user can enter commands through the Telnet program just as if they were entering commands directly on the server console.
TFTP
TFTP is an acronym for Trivial File Transfer Protocol. It is transfer protocol that uses the User Datagram Protocol (UDP) and provides file writing and reading, but it does not provides directory service and security features.
ToS
ToS is an acronym for Type of Service. It is implemented as the IPv4 ToS priority control. It is fully decoded to
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determine the priority from the 6-bit ToS field in the IP header. The most significant 6 bits of the ToS field are fully decoded into 64 possibilities, and the singular code that results is compared against the corresponding bit in the IPv4
ToS priority control bit (0~63).
TLV
TLV is an acronym for Type Length Value. A LLDP frame can contain multiple pieces of information. Each of these pieces of information is known as TLV.
TKIP
TKIP is an acronym for Temporal Key Integrity Protocol. It used in WPA to replace WEP with a new encryption algorithm. TKIP comprises the same encryption engine and RC4 algorithm defined for WEP. The key used for encryption in TKIP is 128 bits and changes the key used for each packet.
U
UDP
UDP is an acronym for User Datagram Protocol. It is a communications protocol that uses the Internet Protocol (IP) to exchange the messages between computers.
UDP is an alternative to the Transmission Control Protocol (TCP) that uses the Internet Protocol (IP). Unlike TCP, UDP does not provide the service of dividing a message into packet datagrams, and UDP doesn't provide reassembling and sequencing of the packets. This means that the application program that uses UDP must be able to make sure that the entire message has arrived and is in the right order. Network applications that want to save processing time because they have very small data units to exchange may prefer UDP to TCP.
UDP provides two services not provided by the IP layer. It provides port numbers to help distinguish different user requests and, optionally, a checksum capability to verify that the data arrived intact.
Common network applications that use UDP include the Domain Name System (DNS), streaming media applications such as IPTV, Voice over IP (VoIP), and Trivial File Transfer Protocol (TFTP).
UPnP
UPnP is an acronym for Universal Plug and Play. The goals of UPnP are to allow devices to connect seamlessly and to simplify the implementation of networks in the home (data sharing, communications, and entertainment) and in corporate environments for simplified installation of computer components
User Priority
User Priority is a 3-bit field storing the priority level for the 802.1Q frame.
V
VLAN
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Virtual LAN. A method to restrict communication between switch ports. VLANs can be used for the following applications:
VLAN unaware switching: This is the default configuration. All ports are VLAN unaware with Port VLAN ID 1 and members of VLAN 1. This means that MAC addresses are learned in VLAN 1, and the switch does not remove or insert VLAN tags.
VLAN aware switching: This is based on the IEEE 802.1Q standard. All ports are VLAN aware. Ports connected to
VLAN aware switches are members of multiple VLANs and transmit tagged frames. Other ports are members of one
VLAN, set up with this Port VLAN ID, and transmit untagged frames.
Provider switching: This is also known as Q-in-Q switching. Ports connected to subscribers are VLAN unaware, members of one VLAN, and set up with this unique Port VLAN ID. Ports connected to the service provider are VLAN aware, members of multiple VLANs, and set up to tag all frames. Untagged frames received on a subscriber port are forwarded to the provider port with a single VLAN tag. Tagged frames received on a subscriber port are forwarded to the provider port with a double VLAN tag.
VLAN ID
VLAN ID is a 12-bit field specifying the VLAN to which the frame belongs.
Voice VLAN
Voice VLAN is VLAN configured specially for voice traffic. By adding the ports with voice devices attached to voice
VLAN, we can perform QoS-related configuration for voice data, ensuring the transmission priority of voice traffic and voice quality.
W
WEP
WEP is an acronym for Wired Equivalent Privacy. WEP is a deprecated algorithm to secure IEEE 802.11 wireless networks. Wireless networks broadcast messages using radio, so are more susceptible to eavesdropping than wired networks. When introduced in 1999, WEP was intended to provide confidentiality comparable to that of a traditional wired network (Wikipedia).
WiFi
WiFi is an acronym for Wireless Fidelity. It is meant to be used generically when referring of any type of 802.11 network, whether 802.11b, 802.11a, dual-band, etc. The term is promulgated by the Wi-Fi Alliance.
WPA
WPA is an acronym for Wi-Fi Protected Access. It was created in response to several serious weaknesses researchers had found in the previous system , Wired Equivalent Privacy (WEP). WPA implements the majority of the IEEE 802.11i standard, and was intended as an intermediate measure to take the place of WEP while 802.11i was prepared. WPA is specifically designed to also work with pre-WPA wireless network interface cards (through firmware upgrades), but not
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necessarily with first generation wireless access points. WPA2 implements the full standard, but will not work with some older network cards (Wikipedia).
WPA-PSK
WPA-PSK is an acronym for Wi-Fi Protected Access - Pre Shared Key. WPA was designed to enhance the security of wireless networks. There are two flavors of WPA: enterprise and personal. Enterprise is meant for use with an IEEE
802.1X authentication server, which distributes different keys to each user. Personal WPA utilizes less scalable
'pre-shared key' (PSK) mode, where every allowed computer is given the same passphrase. In PSK mode, security depends on the strength and secrecy of the passphrase. The design of WPA is based on a Draft 3 of the IEEE 802.11i standard (Wikipedia)
WPA-Radius
WPA-Radius is an acronym for Wi-Fi Protected Access - Radius (802.1X authentication server). WPA was designed to enhance the security of wireless networks. There are two flavors of WPA: enterprise and personal. Enterprise is meant for use with an IEEE 802.1X authentication server, which distributes different keys to each user. Personal WPA utilizes less scalable 'pre-shared key' (PSK) mode, where every allowed computer is given the same passphrase. In PSK mode, security depends on the strength and secrecy of the passphrase. The design of WPA is based on a Draft 3 of the IEEE 802.11i standard (Wikipedia)
WPS
WPS is an acronym for Wi-Fi Protected Setup. It is a standard for easy and secure establishment of a wireless home network. The goal of the WPS protocol is to simplify the process of connecting any home device to the wireless network (Wikipedia).
WRED
WRED is an acronym for Weighted Random Early Detection. It is an active queue management mechanism that provides preferential treatment of higher priority frames when traffic builds up within a queue. A frame's DP level is used as input to WRED. A higher DP level assigned to a frame results in a higher probability that the frame is dropped during times of congestion.
WTR
WTR is an acronym for Wait To Restore. This is the time a fail on a resource has to be 'not active' before restoration back to this (previously failing) resource is done.
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EC Declaration of Conformity
For the following equipment:
*Type of Product : L2+ 24-Port 10/100/1000T 802.3at PoE + 2-Port 10G SFP+
Stackable Managed Switch
: SGS-5220-24P2X *Model Number
* Produced by:
Manufacturer‘s Name : Planet Technology Corp.
Manufacturer‘s Address : 10F., No.96, Minquan Rd., Xindian Dist.,
New Taipei City 231, Taiwan (R.O.C.). is herewith confirmed to comply with the requirements set out in the Council Directive on the
Approximation of the Laws of the Member States relating to Electromagnetic Compatibility
Directive on (2004/108/EC) and Low Voltage Directive 2006/95/EC.
For the evaluation regarding the EMC, the following standards were applied:
EN 55022
EN 61000-3-2
(2010+AC: 2011)
(2006+A1:2009+A2:2009)
EN 61000-3-3
EN 55024
EN 61000-4-2
EN 61000-4-3
EN 61000-4-4
EN 61000-4-5
EN 61000-4-6
EN 61000-4-8
EN 61000-4-11
EN60950-1
(2008)
(2010)
(2009)
(2006+A2:2010)
(2012)
(2006)
(2009)
(2010)
(2004)
(2006+A11:2009+A1:2010+A12:2011+A2:2013)
Responsible for marking this declaration if the:
Manufacturer
Authorized representative established within the EU
Authorized representative established within the EU (if applicable):
Company Name: Planet Technology Corp.
Company Address: 10F., No.96, Minquan Rd., Xindian Dist., New Taipei City 231, Taiwan
(R.O.C.)
Person responsible for making this declaration
Name, Surname Kent Kang
Position / Title : Director
Taiwan
Place
4 th
, Jun., 2015
Date Legal Signature
PLANET TECHNOLOGY CORPORATION
e-mail: [email protected] http://www.planet.com.tw
10F., No.96, Minquan Rd., Xindian Dist., New Taipei City, Taiwan, R.O.C. Tel:886-2-2219-9518 Fax:886-2-2219-9528
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Key Features
- 24 Gigabit Ethernet ports with 2 SFP/SFP+ uplink ports for high-speed connectivity
- Layer 2+ features including VLAN, QoS, IGMP snooping, and port security for enhanced network management
- L2+ multicast features like IGMP/MLD snooping, PIM-DM/SM, VBST for optimized multicast performance
- Advanced QoS features like DiffServ, 802.1p/1Q priority, and rate limiting for traffic prioritization
- Robust stacking capabilities with up to 32 units in a single stack for scalability and redundancy
- Intuitive web management interface and command-line interface for easy configuration and monitoring