User’s Guide_V2.0.7
GIGAMEDIA
GGM GS26L2P User’s Guide
Copyright Notice
You may not replicate or copy the contents in this document by any means, without the
prior written consent from GIGAMEDIA
GIGAMEDIA provides this document without warranty of any kind, including, but not
limited to the expressed or implicated warranty on commerce, quality or particular use .
And the information in this document is subject to change without notice. GIGAMEDIA
reserves the right to make changes to this document or the products described in this
manual at any time.
For Technical Support
Address: Rue du Haut de Sainghin
CRT N°4 - CS30114 59811
LESQUIN Cedex – France
Email: support.actifs@conectis.com
The document number :20150422-GGM GS26L2P_V2.0.7
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Contents
CHAPTER 1 PRODUCT INSTRUCTION ................................................................................................ 5
1.1 Introduction ........................................................................................................................... 5
1.2 Front Panel ............................................................................................................................. 5
1.3 Rear Panel .............................................................................................................................. 6
CHAPTER 2 PREPARATIONS BEFORE INSTRUCTION ........................................................................... 6
2.1 Precautions ............................................................................................................................. 6
2.2 Check Installation Environment ........................................................................................... 6
2.3 Installation Tools .................................................................................................................... 7
CHAPTER 3 INSTALLATION ............................................................................................................... 7
3.1 Install the Switch .................................................................................................................... 7
3.2 Connect the power cord and grounded cord ..................................................................... 7
3.3 Test after Installation ............................................................................................................. 8
CHAPTER 4 TECHNICAL SPECIFICATIONS ....................................................................................... 9
4.1 Hardware Features:............................................................................................................... 9
4.2 Software Features: ................................................................................................................ 9
PART TWO WEB CONFIGURATION GUIDE......................................................................... 12
CHAPTER 1 USER LOGIN ................................................................................................................ 12
CHAPTER 2 SWITCH STATUS........................................................................................................... 13
2.1 System Information ............................................................................................................. 13
2.2 Logging Message ................................................................................................................ 13
2.3 Port Counters ....................................................................................................................... 14
2.4 Aggregation State ................................................................................................................ 14
2.5 LLDP Statistics ..................................................................................................................... 15
2.6 IGMP Statistics ..................................................................................................................... 15
2.7 STP Statistics ....................................................................................................................... 16
CHAPTER 3 BASIC CONFIGURATION ............................................................................................... 16
3.1 IP Configuration ................................................................................................................... 16
3.3 Account Config ..................................................................................................................... 17
3.3 Logging Setting .................................................................................................................... 17
3.4 Time Settings ....................................................................................................................... 18
3.5 Port Setting ........................................................................................................................... 18
CHAPTER 4 ADVANCED CONFIGURATION ...................................................................................... 19
4.1 Port Mirror Configuration .................................................................................................... 19
4.2 Port Aggregation .................................................................................................................. 20
4.3 VLAN Management ............................................................................................................. 21
4.4 Voice VLAN .......................................................................................................................... 22
4.5 Multicast Configuration ....................................................................................................... 23
4.6 IGMP Snooping Configuration ........................................................................................... 23
4.7 Jumbo Frame Configuration .............................................................................................. 24
4.8 LLDP Configuration ............................................................................................................. 24
4.9 SNMP Configuration............................................................................................................ 25
4.10 PoE Management .............................................................................................................. 26
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CHAPTER 5 QOS CONFIG ............................................................................................................... 27
5.1 General.................................................................................................................................. 27
5.2 QoS Basic Mode .................................................................................................................. 27
5.3 Rate Limit .............................................................................................................................. 27
CHAPTER 6 NETWORK SECURITY .................................................................................................. 28
6.1 Dynamic Learend................................................................................................................. 28
6.2 Static MAC Address Table .................................................................................................. 28
6.3 Port Limit Configuration ...................................................................................................... 29
6.4 Storm Control ....................................................................................................................... 30
6.5 Port Isolation......................................................................................................................... 30
6.6 DoS configuration ................................................................................................................ 31
6.7 Loop Protect ......................................................................................................................... 32
6.8 STP Configuration ............................................................................................................... 32
CHAPTER 7 SYSTEM MAINTENANCE .............................................................................................. 33
7.1 Reboot Switch ...................................................................................................................... 33
7.2 Factory Reset ....................................................................................................................... 34
7.3 Firmware Upgrading ............................................................................................................ 34
7.4 Ping Test ............................................................................................................................... 34
7.5 Network Cable Test ............................................................................................................. 35
Appendix Trouble shooting.......................................................................................................... 36
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Packaging list:

PoE

Power Cord

User Guide/CD
x1

Warranty card
x1

Installation accessories kit
Switch
x1
x1
x1
Please contact local reseller or distributor if any accessories are missing.
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Part One Hardware Installation Guide
Chapter 1
1.1
Product Instruction
Introduction
GGM GS26L2P: 24*10/100/1000M PoE ports, 2*1000 Base-X SFP; 1*Console port.
1.2
Front Panel
GGM GS26L2P
24*10/100/1000M PoE ports, 2*1000 Base-X SFP; 1*Console port .
GGM GS26L2P Front Panel
LED Indicator Instruction
Please check the LED indicators on the left of front panel.
1)
System Indicator
The System indicator is on the upper-left side of front panel, it is on when the switch
is powered. The indicator is on when switch works normally.
2)
Power Indicator
Below the System indicator is the power indicator, the indicator is on when switch
works normally. If the indicator is off, please check the power supply.
3)
10/100Mbps Link/ACT Indicators
There is a toggle switch on the right side of front panel (next to the Reset button). If
sliding the toggle switch to the left “Link/ACT” side, the indicators marked with
numbers are yellow when the 10/100M ports auto-negotiate connected, and the
yellow indicators flash when there are data communications through the ports.
4)
1000Mbps Link/ACT Indicators
Slide the toggle switch to the left “Link/ACT” side, the indicators marked with
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numbers are green when the 1000Mbps ports auto-negotiate connected, and the
green indicators will flash when there are data communications through the ports.
5)
PoE Indicators
Slide the toggle switch to the right “POE” side, the indicators marked with numbers
are yellow when the PoE function works. And the yellow indicators will flash when
the PoE ports failed to work or the PDs are overloaded, please remove the PD, and
reconnect after examination.
1.3 Rear Panel
Rear Panel
Power Socket: Three-core power socket is adopted, please connect female head
of power cord to the socket, and connect the AC power supply with male head.
Chapter 2
Preparations before Instruction
2.1 Precautions
Please read the following precautions carefully before operation, to avoid damaging the
device or causing body injuries.
1). Please remove the power socket before cleaning the switch. Don’ wipe the switch with wet
cloth or wash the switch with liquid.
2). Don’t stock the device in damp environment or near water, to avoid water or moisture
penetrating into the inner device.
3). Don’t put the device on a unstable box or desk, the device will get damaged from falling.
4). Please keep good ventilation indoor, and make sure the heat dissipation function of switch
works well.
5). The switch only works normally in suitable voltage. Please check the working voltage first.
6). Please don’t open the switch enclosure randomly, especially when the switch is powered
on, there is risk of electric shock.
7). Please wear anti-static wrist strap when change the interface board, to avoid the static
electricity damage the board.
2.2
Check Installation Environment
The switch is for indoor use only, please pay attention to the following problems when install
the switch in a cabinet or put the device directly on the desktop.
1)
The air vents of switch must have enough space to dissipate the heat inside enclosure.
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2)
A good heat dissipation system in the cabinet or on the desktop.
3)
The cabinet or desktop strong enough to support the weight of switch and installation
accessories.
4)
Safe ground connection for the cabinet or desktop.
2.3
Installation Tools
1)
Flathead screw driver
2)
Cross screw driver
3)
Anti-static wrist strap
Chapter 3
3.1
Installation
Install the Switch
3.1.1 Install the switch on a 19 inch standard cabinet
1) First fix the provided two L-shaped brackets on the two sides of switch.
2) Fix the switch on the rack with screws (screws are not provided).
Cabinet Installation
3.1.2 Install the switch on the desktop
When there is no 19 inch standard cabinet, the switch is usually put on clean desktop. The
operation is easier, please follow the below instructions:
1)
Keep the desktop stable and safely grounded.
2)
Set aside 10cm space around switch for heat dissipation.
3)
Don’t put any heavy device on the switch.
3.2
Connect the power cord and grounded cord
3.2.1 Select of AC Power Socket
The neutral one-phase 3-wire power socket is advised to adopt, or the multifunctional PC
power socket. The neutral point of power supply must be well grounded, please check the
grounded power supply before operation.
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one-phase 3-wire power socket
3.2.2 Connection of AC power cord
Step one: please connect one end of power cord to the power jack on the switch rear panel,
Connect the other end to the AC power socket.
Step two: check the power indicator (PWR) on the front panel, if the LED is on, connection is
successful.
3.3
Test after Installation
Make sure the working voltage is the same with the rated voltage of switch.
Check the connection of grounded cord.
Check the connection of configuration cable and power input cord.
If the interface cable is partly deployed outdoor, please check the connection of anti-thunder
AC power strip and interface anti-thunder device .
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Chapter 4
Technical Specifications
4.1 Hardware Features:
Items
GGM GS26L2P
24*10/100/1000M PoE ports;
Fixed Ports
2*Gigabit SFP ports;
1*console port
PoE standards
IEEE802.3af/at
Max Output Power(single port)
30W
Total Power Consumption
450W
PoE Pin-out
1/2(+), 3/6(-);
Switching Capacity
≥52Gbps
Forwarding Mode
Full wire-speed storage and forwarding
10M:14880pps/port
Forwarding Rate
100M:148809pps/port
1000M:1488095pps/port
Operation Temperature
-20~50°C
Storage Temperature
-40~70°C
Operation Humidity
10%~90%(non-condensing)
Storage Humidity
5%~95%(non-condensing)
Dimensions
440(L)x285(W)x44.5(H)mm
Input Power Supply
AC:110-240V ~ 50-60Hz/450W
Weight
<5.5Kg
LED Indicator
Power, Link/Act, PoE Status
Energy Saving
Comply with “EEE” Energy Efficient Ethernet
4.2 Software Features:
Item
GGM GS26L2P
IEEE 802.3af, Power Over Ethernet
IEEE 802.3at, Power Over Ethernet Plus
IEEE 802.3u, 100BASE-TX
IEEE 802.3ab, 1000 BASE-T
Standards and Protocols
IEEE 802.3z, 1000 BASE-X
IEEE 802.3ad, Static or Dynamic Link Aggregation
IEEE 802.3x, Full-Duplex Flow Control
IEEE 802.3az, EEE(Energy Efficient Ethernet)
IEEE 802.1s, Multiple Spanning Tree Protocol
MAC Address Table
VLAN
Up to 8K MAC addresses
Support auto-update,
two-way learning
Port-based VLANs\ Port-protocol-based VLANs \
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4K-entry Vlan Table
VLANs based on IEEE 802.1q
Support Spanning Tree Protocol
Spanning Tree
Support Rapid Spanning Tree Protocol
Link Aggregation
Support 8 aggregation groups, and a maximum of 8 ports in
each aggregation group
Support bi-direction port mirroring
Port Mirroring
Port Isolation
Ring Protection
RSPAN function for remote mirroring
Isolation between downlink ports without influence the
communication between downlink and uplink ports
Ring Protection, real-time detecting, quick alarm, precise
localization, smart blocking and auto-recovery
Back-pressure traffic control under Half-Duplex mode
Traffic Control
IEEE 802.3x traffic control under Full-Duplex mode
Port Traffic Restriction
Port-based ingress or egress rate limiting
Support the suppression of broadcast storm based on
Storm Suppression
forwarding rate
Support storm suppression based on bandwidth adjustment,
storm filtering and ACL strategy.
Multicast Control
Support IGMPv1/2/3 and MLDv1/2 Snooping;
Attack Prevention(Land attack\Blat attack\Ping attack\TCP
Security
control flag attack)
MAC & Port based Security
SP(Strict Priority)
WFQ (Weighted Fair Queuing)
WRR (Weighted Round Robin)
QOS
Weighted Random Early Detection (WRED)
Head Of Line
802.1p(Port Queuing Priority)
Differentiated Service Code Point(DSCP Priority)
IPv6
IPv6 Parsing
Total PoE power budget control
Per port PoE function enable/disable
PoE Management
PoE Port Power feeding priority
Per PoE port power limitation
PD classification detection
PoE schedule
10/100Base-TX:UTP category 3/4/5 cables( Maximum 100m)
Physic Medium
1000Base-T:UTP Category 5 cable( Maximum 100m)
1000Base-SX:fiber with 850nm wavelength, supports a max
transmission distance of 550m
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1000Base-LX:fiber with 1310nm / 1550nm wavelength,
supports a max transmission distance of 80km
Network Cable Deployment
Negotiation Pattern
Support Auto-MDIX function, automatically identify straight
forward cable and cross-over cable
Support port auto-negotiation function( automatically negotiate
transmission rate and Duplex modes)
Detect the connectivity of network cables
Uploading or downloading of the configuration data
Maintenance
Uploading of upgrade patch
Support system logs
WEB-based reset to factory defaults
WEB-based interface management
Configuration & Management
Telnet
CLI interface management
SNMP V1/2
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Part Two WEB Configuration Guide
Chapter 1
User Login
GGM GS26L2P smart PoE switch adopt Web-based interface management, the default IP is
192.168.255.1. Please make sure the IP address of PC is in the same network segment with
that of switch, or the PC can’t access to manage the switch. After the setting of IP address,
please input 192.168.255.1 in the browser to access the configuration interface of switch.
The Web management interface consists of five parts, which are switch status, basic
configuration, advanced configuration, network security, system maintenance.
Login Page
Enter user password in the above login page, the default password is admin. The system only
support single user login, other logins will be refused until the user logs out.
If IP address conflict occurs, it suggests the latest user didn’t log out successfully. Please
reboot the device or try to log in again180s later.
It is advised to reset the IP address and password in first login, and make sure the switch is
not configured in the same network segment with DHCP server or Internet Gateway device.
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Chapter 2
2.1
Switch Status
System Information
System Information
Device status can be checked in the above page, which contains: Device Model
number(equipment type), PCB/HW Version, MAC Address, Serial Number(System Object ID),
Firmware Version, Firmware Updated Date, System Running Time(System Up Time).
2.2
Logging Message
Logging Message
System log can be checked in above page. Maintenance technicians can check the
history system log.
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2.3
Port Counters
Port Counters
The above picture shows switch port statistics. Users can check the sent/received bytes,
sent/received packets, wrongly sent/received packets. If there are too many wrong packets, it
suggests the port has very poor working performance, the user need to examine the
connection of network cable or the partner network card.
The current software version doesn’t support real-time statistics refresh, please click
“Refresh” button to get new statistics.
2.4
Aggregation State
Link Aggregation
In above Link Aggregation page, user can check the port aggregation information. Like
aggregator group (LAG), link state, aggregator group member state (active/standby).
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2.5
LLDP Statistics
LLDP Statistics
LLDP information can be checked in above page. When enable the LLDP (Link Layer
Discovery Protocol) function, LLDP information of switch ports can be checked here.
2.6
IGMP Statistics
IGMP Statistics
When the IGMP snooping function is enabled, IGMP information can be checked in
above page.
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2.7
STP Statistics
STP Statistics
In above STP statistics page, users can check the BPDU packets of every port and every
link aggregation STP.
Chapter 3
Basic Configuration
3.1 IP Configuration
IP configuration
The above IP address configuration page can be used to configure the IP address of
device management interface “Interface Vlan 1”. The default IP address, subnet mask
and gateway will be showed in the page. When revise the configuration, please press
“save” to confirm new configuration. Press “reset” to back to original configuration.
Above configuration need to be done under default “Static” state, if switch the IP address
mode to DHCP, IP address will be get dynamically. Please record the new IP address for
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future login.
Notice: Don’t modify the subnet mask unless exceptional case, login problem will be caused by
improper modification.
3.2 Management VLAN
3.3
Account Config
Account config
Login password can be revised in this page, please remember the new password for
future login.
3.3
Logging Setting
Logging Setting
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System log configuration is checked in above page. Remote log server can be
configured, system log can be saved on the remote server as backup use. Enable or
disable the remote backup function in this page, “server IP address” need to be entered
manually.
3.4 Time Settings
3.5
Port Setting
Port Setting
Port Status: The user can enable or disable a port in this page. Click “Enable” to open the port,
click “Disable” to close the port, the default setting is “Enable”.
Port Mode: 6 modes can be configured: Auto-negotiation,10 Half,10 Full,100 Half, 100 Full
and1000 Full. Default mode is Auto-negotiation, can be changed in pull-down list.
Flow Control: This function is defaulted closed, open it when needed.
Loop Detection: The function is defaulted closed, open it when needed. A port will be blocked
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to cut the loop when loop is detected.( Notice: the port link indicator in front panel will be still
on when the port is blocked, for the physic connection is existed; while the link indicator on
the top of web management pages will be off.)
Chapter 4
Advanced Configuration
4.1 Port Mirror Configuration
Port Mirror Configuration
Users can do Port Mirror Configuration in above page. Port mirroring is used on a network
switch to send a copy of network packets or data traffic from some ports (or an entire VLAN)
to a network monitoring connection on specified switch port. The original port is called Source
Port, and the specified port is Mirroring Port. This is commonly used for network appliances
that require monitoring of network traffic without influencing the normal working of every port,
it’s a convenient online-monitoring function.
All ports have mirroring function, but only one port can be configured as Mirroring Port. In the
same system, there is only one mirroring port, while more than one Source Ports can be
existed. When a port is configured as mirroring port, its corresponding port can’t be
configured as source port.
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4.2 Port Aggregation
4.2.1 Static Aggregation
Static Aggregation
Switches support 8 aggregation groups, each group contains maximum 8 ports. The
members in the same aggregation group should have same configuration for port
forwarding rate mode and VLAN distribution.
If LACP function applied for some ports, then static aggregation can’t be configured.
Notice: Static aggregation can’t be configured when LACP function enabled.
4.2.2 LACP Setting
LACP Setting
When the LACP protocol is on, the aggregated devices interactively gather information
through LACP. According to the parameters and status of each device, automatically receive
and dispatch Data of matchable link aggregation. When the Aggregation is formed, switches
keep in an aggregation link status, switches automatically adjusts link aggregation or
dissolute when configuration changes.
If the port is configured as static aggregation, the dynamic LACP will be not available.
Notice: Static aggregation LACP function can’t be used together.
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4.3
VLAN Management
4.3.1 VLAN Setting
VLAN Setting
VLAN can be created or deleted in above page. Users can create a new VLAN and give
a name to the VLAN.
4.3.2 VLAN Port Status
VLAN Port Status
Port features can be configured in above page. Users can create a VLAN and add ports
to the VLAN list with specified mode. VLAN features and port parameters can be
configured.
Ingress Filtering: enable ingress filtering function to abandon or forward unmatched
VLAN packets. This function is default disable, the unmatched packet will be received.
Membership type: tag refers to the port will receive tagged packets (and the VLAN ID in
for tagged packet is not “0”); untag refers to the port receive untagged packets only.
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4.4
Voice VLAN
4.4.1 Voice VLAN
Voice Vlan
Voice VLAN is the VLAN for voice data flow. Create a Voice VLAN and add the ports
connected with voice devices to Voice VLAN, Voice data flow can be centrally
transmitted in Voice VLAN. Users can configure special QoS (Quality of Service) for the
voice data flow, like configure a higher transmitting priority class to ensure a high quality
connection.
4.4.2 Voice VLAN OUI
Voice Vlan OUI
Voice VLAN signify mode can be configured in this page, like Siemens AG phones、Cisco
phones、H3C phones……
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4.5
Multicast Configuration
Multicast Configuration
MLD Snooping is short for Multicast Listener Discovery Snooping, which is IPv6
multicast control mechanism for Layer 2 devices. The function is used to manage and
control IPv6 multicast.
Multicast snooping configuration can be made in above page, enable or disable multicast
snooping and define multicast snooping address range.
4.6
IGMP Snooping Configuration
IGMP Snooping
IGMP snooping configuration can be made in above page, enable or disable IGMP
snooping and define IGMP snooping address range.
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4.7 Jumbo Frame Configuration
Jumbo Frame Configuration
Generally, the max frame size for packet is 1518 Bytes, when packet is larger than this
size, it will be processed in batch, 1518 Bytes as a unit. And users can also set a Jumbo
Frame limitation in this page (from 1522 to 9216 Bytes), enable Jumbo Frames
transmitted smoothly, reduce the load.
4.8 LLDP Configuration
LLDP Configuration
Switches support LLDP(Link Layer Discovery Protocol), which can define switch
capacity,
management
address,
device
tags
and
port
tags
as
different(TLV(type/length/value) and save them in LLDPDU (Link Layer Discovery
Protocol Data Unit). These information will be released to the direct-connected neighbor
device, neighbor devices will save these information based on MIB (Management
Information Base) .These information will be used for network management system
examination or judge link communication condition.
LLDP information can be configured in above page, including transmission interval, hold
time Multiplier, retransmission delay and transmission delay.
Enable LLDP or Disable LLDP can be configured. Users can also configure the
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information transmitted to neighbor devices, like port description, system name, system
description, system property and management address.
4.9
SNMP Configuration
4.9.1 SNMP system configuration
SNMP System Configuration
SNMP(Simple Network Management Protocol) is Internet-standard protocol for
managing devices on IP networks. It consists of a set of standards for network
management, including an application layer protocol, a database schema, and a set of
data objects. SNMP is used mostly in network management systems to monitor
network-attached devices for conditions that warrant administrative attention.
4.9.2 SNMP Community configuration
SNMP Community Configuration
Configure SNMP common identifiers, switches with same community identifier can make
unified management.
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4.9.3 Trap Configuration
Trap Configuration
SNMP trap is a message used in SNMP protocol, the device can send a trap message to
SNMP manager when they experience a problem, rather than waiting for the polling of
SNMP manager.
4.10 PoE Management
Trap Configuration
you can find “Enable/ disable” to enable or disable PoE supply power to powered device.
From the Priority, you can find Low, Middle and High to ensure power output of the port
with the highest priority. You can check current currency from column“(mA)”,Voltage from
column“(V)”
and power from column“(W)” and PoE output grade from column “(Class)”
The default setting is “0”for 0-13W PD, ”1” for less than 4W PD, “2” for 4-7W PD.
“3”for 7-13W PD,”4” for IEEE802.3at PD, “5,6” kept as potential grade.
You can find PoE supply power normally or not from “Status” column or LED indicators
status from Front panel of the Switch.
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Chapter 5
QoS Config
5.1 General
5.2
QoS Basic Mode
5.3 Rate Limit
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Chapter 6
Network Security
6.1 Dynamic Learned
Dynamic MAC Address Configuration
MAC address table and configuration can be checked in above page, users can add the
showed dynamic MAC addresses to static MAC table.
6.2 Static MAC Address Table
Static
ARP Table
Static MAC address configuration can be manually made in this page. MAC items can be
added according “port”, ”VLAN ID”, ”MAC address” and “IP address”.
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6.3
Port Limit Configuration
Ingress Bandwidth Control
egress Bandwidth Control
Egress Queue Bandwidth
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Switch Bandwidth can be configured in above pages. Configurations include
ingress/egress flow control, flow control priority class.
6.4
Storm Control
Storm control
After enable the global situation storm control, please continue with function
configuration. The switch supports multiple storm control modes, like broadcast storm
control, unknown multicast storm control and unknown unitcast storm control.
6.5
Port Isolation
Port Isolation Configuration
In above port isolation page, isolated ports can be configured. Applying port isolation
function to ensure port security .
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6.6
DoS configuration
Global Dos Configuration
Dos Port
Configuration
Dos is short for Denial of Service, what causes DoS problem is DoS attacks, which will
block the normal network service. The most common DoS attacks are computer network
bandwidth attack and connectivity attack. Please configure DoS information in above
pages.
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6.7
Loop Protect
6.8
STP Configuration
STP Global configuration
STP Port configuration
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STP Bridge Configuration
STP configurations can be made in above pages. Users can choose from STP and
RSTP modes according to different network requirements.
Chapter 7
7.1
System Maintenance
Reboot Switch
Reboot Switch
Above page is used to reboot switch. When manage the switch, some configurations need to
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reboot the switch to take effect.
7.2
Factory Reset
Factory Reset
The switch support factory reset, press “restore” button to back factory default settings,
including all configurations, IP address and management password.
7.3
Firmware Upgrading
Firmware Upgrading
Current system software version can be checked in this page, and new software upgrade
can be made.
7.4
Ping Test
Ping Test Configuration
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User’s Guide_V2.0.7
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Ping test is to check if a specified Client can be reached, the function is the same with ping
command under windows command lines. The IP addresses of switch and PC must be in
same network segment.
7.5
Network Cable Test
Network Cable Test
Users can test the twisted pair cable working status. Please select test ports then press
“cooper test” to check the working status.
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User’s Guide_V2.0.7
GIGAMEDIA
Appendix Trouble shooting
Problems
All LEDs are off
when
power on the switch
Reasons
Solutions
Power cord connection error or
Check power cord connection and the
power supply failure
power socket.
1.Network cable is damaged or
The LINK LED is unlit.
the connection is not firm.
2.Wrong network cable type or
Change the network cable.
the cable is longer than 100m.
Slower data transmitting
The communication pattern of
Changed to matched pattern or configure
and packets loss.
switch and PDs are not matched.
to auto-negotiation pattern.
The network cable
There is no data transmitting from
Waiting for 120s, the switch will get
works in one port ,
PD and the switch can’t learn a
auto-updated address or transmitting
doesn’t work in another
new address to do
data from the PD, the switch will get
new port.
communication.
address then.
1. Check if there is a loop problem,
All the “ACT” LEDs flash
and the network rate
Caused by broadcast storm.
slow down
reasonably configure the network.
2. Check if there are large numbers of
broadcast packets from specific sites.
1. Check power connection and the
Stop to work after
1. Abnormal power supply.
working voltage;
working for a while.
2. Overheating.
2. Check the working environment,
including air hole and switch fan.
“PoE” LED indicators
flash
1. PoE port doesn’t work
2. PD is overloaded
3. The network cable is damaged.
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Check the network cable, port
connection or reduce the load of PDs.