Allied Telesyn International Corp | AT-8324SX | User`s guide | Allied Telesyn International Corp AT-8324SX User`s guide

Allied Telesyn International Corp AT-8324SX User`s guide
Management
Software
®
AT-S29
◆
User’s Guide
FOR USE WITH THE AT-8324SX FAST ETHERNET
SWITCH PRODUCT
VERSION 1.12
PN 613-50115-00 Rev A
Copyright  2000 Allied Telesyn International, Corp.
960 Stewart Drive Suite B, Sunnyvale, CA 94086 USA
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn International, Corp.
CentreCom is a registered trademark of Allied Telesyn International, Corp.
Internet Explorer is a trademark of Microsoft Corporation. Netscape Navigator is a registered trademark of Netscape Communications Corporation. All other product
names, company names, logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners.
Allied Telesyn International, Corp. reserves the right to make changes in specifications and other information contained in this document without prior written notice.
The information provided herein is subject to change without notice. In no event shall Allied Telesyn International, Corp. be liable for any incidental, special, indirect, or
consequential damages whatsoever, including but not limited to lost profits, arising out of or related to this manual or the information contained herein, even if Allied
Telesyn International, Corp. has been advised of, known, or should have known, the possibility of such damages.
Table of Contents
Preface ...................................................................................................................................................................................................................vii
Supported Platform ........................................................................................................................................................................................vii
Purpose of This Guide ...................................................................................................................................................................................viii
How This Guide is Organized ...................................................................................................................................................................... ix
Where to Find Web-based Guides ............................................................................................................................................................ x
Document Conventions .................................................................................................................................................................................xi
Contacting Allied Telesyn Technical Support ................................................................................................................................... xii
Online Support .......................................................................................................................................................................................... xii
Telephone and Fax Support............................................................................................................................................................... xii
E-mail Support ........................................................................................................................................................................................... xii
Returning Products ........................................................................................................................................................................................xiii
FTP Server ............................................................................................................................................................................................................xiv
For Sales or Corporate Information ........................................................................................................................................................xv
Tell Us What You Think .................................................................................................................................................................................xvi
Chapter 1
Switch Management ....................................................................................................................................................................................17
Configuration Options ...................................................................................................................................................................................17
Making Connections for System Configuration ..............................................................................................................................1 8
Serial Connection ..................................................................................................................................................................................... 18
In-Band Connections ............................................................................................................................................................................. 18
Chapter 2
Using the System Configuration Program ...................................................................................................................................21
Login Screen ........................................................................................................................................................................................................21
Main Menu ...........................................................................................................................................................................................................22
System Information Menu ...........................................................................................................................................................................25
Displaying System Information ........................................................................................................................................................ 25
Displaying Version and Module Information ........................................................................................................................... 26
Management Setup Menu ..........................................................................................................................................................................28
Changing the Network Configuration.......................................................................................................................................... 29
Configuring the Serial Port ................................................................................................................................................................. 33
Assigning SNMP Parameters ............................................................................................................................................................. 34
Console Login Configuration ............................................................................................................................................................ 37
Downloading System Software ....................................................................................................................................................... 38
iii
Table of Contents
Configuring the Switch .................................................................................................................................................................................39
Configuring Port Parameters ............................................................................................................................................................ 41
Viewing the Current Port Configuration .................................................................................................................................... 42
Using the Spanning Tree Algorithm ............................................................................................................................................. 43
Viewing the Current Spanning Tree Configuration.............................................................................................................. 46
Using a Mirror Port for Analysis ....................................................................................................................................................... 50
Configuring Port Trunks ...................................................................................................................................................................... 51
IGMP Multicast Filtering ...................................................................................................................................................................... 53
Configuring Bridge MIB Extensions............................................................................................................................................... 55
Configuring Traffic Classes ................................................................................................................................................................. 56
Configuring Virtual LANs .................................................................................................................................................................... 58
Monitoring the Switch ..................................................................................................................................................................................64
Displaying Port Statistics ..................................................................................................................................................................... 65
Displaying RMON Statistics ................................................................................................................................................................ 66
Displaying the Unicast Address Table ......................................................................................................................................... 68
Displaying the IP Multicast Registration Table ....................................................................................................................... 70
Configuring Static Unicast Addresses .......................................................................................................................................... 71
Resetting the System .....................................................................................................................................................................................73
Logging Off the System ................................................................................................................................................................................ 74
Chapter 3
Web-based Management ........................................................................................................................................................................ 75
Web-based Configuration and Monitoring ....................................................................................................................................... 75
Navigating the Web Browser Interface ................................................................................................................................................ 76
Home Page ................................................................................................................................................................................................. 76
Panel Display ............................................................................................................................................................................................. 77
Main Menu .................................................................................................................................................................................................. 77
System Information ........................................................................................................................................................................................79
Switch Information .........................................................................................................................................................................................80
Main Board .................................................................................................................................................................................................. 80
Management Expansion Slot ............................................................................................................................................................ 80
Expansion Slot........................................................................................................................................................................................... 81
IP Configuration ................................................................................................................................................................................................82
SNMP Configuration .......................................................................................................................................................................................83
SNMP Community .................................................................................................................................................................................. 83
Trap Managers .......................................................................................................................................................................................... 84
Security Configuration ..................................................................................................................................................................................85
Change Password.................................................................................................................................................................................... 85
Firmware Upgrade Options .......................................................................................................................................................................86
Web Upload Management ................................................................................................................................................................. 86
TFTP Download Management ......................................................................................................................................................... 87
Address Table Configuration ..................................................................................................................................................................... 88
STA (Spanning Tree Algorithm) ............................................................................................................................................................... 89
Spanning Tree Information ................................................................................................................................................................ 89
Spanning Tree Configuration ........................................................................................................................................................... 92
STA Port Configuration ........................................................................................................................................................................ 94
Configuring Bridge MIB Extensions ....................................................................................................................................................... 95
Bridge Capability ..................................................................................................................................................................................... 95
Bridge Settings ......................................................................................................................................................................................... 96
Priority ....................................................................................................................................................................................................................97
Port Priority Configuration ................................................................................................................................................................. 97
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AT-S29 Management Software User’s Guide
Port Traffic Class Information ............................................................................................................................................................ 98
Configuring Virtual LANs ..............................................................................................................................................................................99
VLAN Basic Information ........................................................................................................................................................................ 99
VLAN Current Table ............................................................................................................................................................................. 100
VLAN Static List ...................................................................................................................................................................................... 101
VLAN Static Table .................................................................................................................................................................................. 101
VLAN Static Membership by Port ................................................................................................................................................. 103
VLAN Port Configuration .................................................................................................................................................................. 104
IGMP Multicast Filtering .............................................................................................................................................................................105
Configuring IGMP ................................................................................................................................................................................. 105
IP Multicast Registration Table ...................................................................................................................................................... 106
Port Menus ........................................................................................................................................................................................................107
Port Information .................................................................................................................................................................................... 107
Port Configuration................................................................................................................................................................................ 108
Expansion Port Information ............................................................................................................................................................ 109
Expansion Port Configuration........................................................................................................................................................ 110
Using a Port Mirror for Analysis .............................................................................................................................................................111
Port Trunk Configuration ..........................................................................................................................................................................112
Port Statistics ...................................................................................................................................................................................................114
Etherlike Statistics ................................................................................................................................................................................. 114
RMON Statistics ...................................................................................................................................................................................... 115
Chapter 4
Advanced Topics .........................................................................................................................................................................................119
Spanning Tree Algorithm ..........................................................................................................................................................................119
Using STA and Trunk Ports .............................................................................................................................................................. 120
Virtual LANs ......................................................................................................................................................................................................121
Assigning Ports to VLANs ................................................................................................................................................................. 122
Forwarding Tagged/ Untagged Frames ................................................................................................................................... 123
Forwarding Traffic with Unknown VLAN Tags ...................................................................................................................... 123
Automatic VLAN Registration ........................................................................................................................................................ 123
Port Trunks ........................................................................................................................................................................................................124
Class-of-Service (CoS) Support ...............................................................................................................................................................125
IGMP Snooping and IP Multicast Filtering ....................................................................................................................................... 126
SNMP Management Software ................................................................................................................................................................127
Remote Monitoring ......................................................................................................................................................................................128
Appendix A
Troubleshooting ..........................................................................................................................................................................................129
Console Connection ....................................................................................................................................................................................129
In-Band Connection .....................................................................................................................................................................................129
Upgrading Firmware via the Serial Port ............................................................................................................................................130
Appendix B
Pin Assignments ..........................................................................................................................................................................................133
DB9 Serial Port Pin Description ..............................................................................................................................................................133
DB-9 Port Pin Assignments .............................................................................................................................................................. 134
Connection from Switch’s Serial Port to 9-Pin COM Port on PC.................................................................................. 134
Connection from Switch’s Serial Port to 25-Pin DCE Port ............................................................................................... 135
Connection from Switch’s Serial Port to 25-Pin DTE Port on PC ................................................................................. 135
v
Preface
This guide contains instructions on how to use the AT-S29 software to
manage and configure your AT-8324SX Fast Ethernet Switch.
Supported Platform
Version 1.12 of the AT-S29 software is supported on the following Fast
Ethernet switch:
❑
AT-8324SX Fast Ethernet Switch
This version supports the following optional modules for the switch:
❑
AT-BMGMT Management Module
❑
AT-BSTACK1 Stacking Module
❑
AT-B15/SX 1000Base-X Gigabit Expansion Module
❑
AT-B15/LX 1000Base-X Gigabit Expansion Module
❑
AT-B17 100Base-FX Expansion Module
vii
Preface
Purpose of This Guide
This guide is intended for network administrators who are responsible
for managing the switches. Network administrators should be familiar
with Ethernet switches, Ethernet and Fast Ethernet technology,
bridging, and the Spanning Tree Protocol (STP).
viii
AT-S29 Management Software User’s Guide
How This Guide is Organized
This guide contains the following chapters and appendices:
Chapter 1, Switch Management, explains switch configuration options
and required switch connections.
Chapter 2, Using the System Configuration Program, describes how
to configure the switch and its ports using the Telnet program or by
connecting a terminal to the console port on the management module.
Chapter 3, Web-Based Management, explains how to configure the
switch and its ports using a Web browser.
Chapter 4, Advanced Topics, describes networking concepts such as
spanning tree algorithm and virtual LANs, SNMP, and RMON.
Appendix A, Troubleshooting, describes known problems and
recommended solutions.
Appendix B, Pin Assignments, briefly describes different wiring
assignments.
ix
Preface
Where to Find Web-based Guides
The Allied Telesyn web site at www.alliedtelesyn.com offers you an easy
way to access the most recent documentation and technical information
for all of our products. All web-based documentation for this product
and other Allied Telesyn products can be downloaded from the web site
in pdf format.
There are several manuals that you will need in order to manage your
Ethernet switch. Some guides are shipped with their respective
products, while other manuals, such as this one, are only available from
the Allied Telesyn web site.
The following manual contains the complete hardware installation
instructions for the switch. You can obtain this manual from the Allied
Telesyn web site.
❑
AT-8324SX Fast Ethernet Switch Installation Guide,
PN 613-50118-00
The following manual is shipped with the switch and contains an
abbreviated version of the installation instructions:
❑
x
AT-8324SX Fast Ethernet Switch Quick Install Guide,
PN 613-50120-00
AT-S29 Management Software User’s Guide
Document Conventions
This guide uses several conventions that you should become familiar
with first before you begin to install the product.
Note
Notes provide additional information.
Warning
Warnings inform you that performing or omitting a specific action
may result in bodily injury.
Caution
Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.
xi
Preface
Contacting Allied Telesyn Technical Support
There are several ways that you can contact Allied Telesyn technical
support: online, telephone, fax and e-mail.
Online Support
You can request technical support online by filling out the Technical
Support Form at www.alliedtelesyn.com/forms/support.htm.
Telephone and
Fax Support
E-mail Support
Americas
United States, Canada, Mexico,
Central America, South America
Tel: 1 (800) 428-4835, option 4
Fax: 1 (503) 639-3176
Germany
Germany, Switzerland, Austria, Eastern
Europe
Tel: (+49) 0130/83-56-66
Fax: (+49) 30-435-900-115
Asia
Singapore, Taiwan, Thailand, Malaysia,
Indonesia, Korea, Philippines, China,
India, Hong Kong
Tel: (+65) 381-5612
Fax: (+65) 383-3830
Italy
Italy, Spain, Portugal, Greece, Turkey, Israel
Tel: (+39) 02-416047
Fax: (+39) 02-419282
Australia
Tel: 1 (800) 000-880
Fax: (+61) 2-9438-4966
Japan
Tel: (+81) 3-3443-5640
Fax: (+81) 3-3443-2443
France
France, Belgium, Luxembourg,
The Netherlands, Middle East,
Africa
Tel: (+33) 0-1-60-92-15-25
Fax: (+33) 0-1-69-28-37-49
United Kingdom
United Kingdom, Denmark, Norway,
Sweden, Finland
Tel: (+0044) 1235-442500
Fax: (+44) 1-235-442680
United States and Canada
TS1@alliedtelesyn.com
Latin America, Mexico, Puerto Rico, Caribbean, and Virgin Islands
latin_america@alliedtelesyn.com
United Kingdom, Sweden, Norway, Denmark, and Finland
support_europe@alliedtelesyn.com
xii
AT-S29 Management Software User’s Guide
Returning Products
Products for return or repair must first be assigned a Return Materials
Authorization (RMA) number. A product sent to Allied Telesyn without a
RMA number will be returned to the sender at the sender’s expense.
To obtain an RMA number, contact Allied Telesyn’s Technical Support at
one of the following locations:
North America
2205 Ringwood Ave
San Jose, CA 95131
Tel: 1-800-428-4835, option 4
Fax: 1-503-639-3716
European Customer Support Centre
10/11 Bridgemead Close
Westmead Industrial Estate
Swindon, Wiltshire SN5 7YT
England
Tel: +44-1793-501401
Fax: +44-1793-431099
Mexico and Puerto Rico
Latin America, the Caribbean,
Virgin Islands
Tel: 1-800-424-5012, ext 3852 or
1-800-424-4284, ext 3852
Tel: international code + 425-481-3852
Fax: international code + 425-483-9458 Mexico only: 95-800-424-5012, ext 3852
Fax: international code + 425-489-9191
xiii
Preface
FTP Server
If you need a driver for an Allied Telesyn device and you know the name
of the driver, you can download the software by connecting directly to
our FTP server at ftp://gateway.centre.com.
At login, enter ‘anonymous’. Enter your e-mail address for the password
as requested by the server at login.
xiv
AT-S29 Management Software User’s Guide
For Sales or Corporate Information
Allied Telesyn International, Corp.
19800 North Creek Parkway, Suite 200
Bothell, WA 98011
Tel: 1 (425) 487-8880
Fax: 1 (425) 489-9191
Allied Telesyn International, Corp.
960 Stewart Drive, Suite B
Sunnyvale, CA 94086
Tel: 1 (800) 424-4284 (USA and Canada)
Fax: 1 (408) 736-0100
xv
Preface
Tell Us What You Think
If you have any comments or suggestions on how we might improve this
or other Allied Telesyn documents, please fill out the Send Us Feedback
Form at www.alliedtelesyn.com/forms/feedback.htm.
xvi
Chapter 1
Switch Management
Configuration Options
For advanced management capability, the AT-8324SX switch’s
AT-BMGMT Management Module provides a menu-driven system
configuration program. This program can be accessed by a direct or
modem connection to the serial port on the management module (outof-band), or by a Telnet connection over the network (in-band).
The management module is based on SNMP (Simple Network
Management Protocol). This SNMP agent permits a switch stack to be
managed from any PC in the network using in-band management
software.
The management module also includes an embedded HTTP Web agent.
This Web agent can be accessed using a standard Web browser from any
computer attached to the network.
The system configuration program and the SNMP agent support
management functions such as:
❑
Enable/disable any port
❑
Set the communication mode for any port
❑
Configure SNMP parameters
❑
Select VLANs or multicast filtering
❑
Display system information or statistics
❑
Configure the switch to join a Spanning Tree Domain
❑
Download system firmware
❑
Restart the system
17
Switch Management
Making Connections for System Configuration
The switch includes a menu-driven configuration program. The ASCII
interface to this program can be accessed by making a direct connection
to the serial port on the Network Management Module, or by a Telnet
connection to the switch over the network.
This section describes how to access the menu-driven configuration
program via:
❑
Serial connection: A terminal or workstation connected to the
serial port on the Network Management Module.
❑
Telnet connection: A workstation connected to a remote switch
via a Telnet connection.
It also describes how to access the embedded Web agent over the
network using any standard browser, or with the provided network
management software or other third-party management software.
Serial Connection
Attach a VT100 compatible terminal or a PC running a terminal
emulation program to the serial port on the Network Management
Module. Use the null-modem cable provided with this package, or use a
null modem connection that complies with the wiring assignments
shown in Appendix B, Pin Assignments of this guide.
When attaching to a PC, set terminal emulation type to VT100, specify
the port used by your PC (i.e., COM 1~4), and then set communications
to 8 data bits, 1 stop bit, no parity, and 9600 bps (for initial
configuration). Also be sure to set flow control to "none." (Refer to
Configuring the Serial Port on page 33 for a complete description of
configuration options.)
In-Band
Connections
Prior to accessing the Network Management Module via a network
connection, you must first configure it with a valid IP address, subnet
mask, and default gateway using an out-of-band connection or the
BootP protocol.
Telnet Connection
After configuring the switch’s IP parameters, you can access the onboard configuration program from anywhere within the attached
network using Telnet.
18
Note
Use the Network Configuration menu to specify the maximum
number of simultaneous Telnet sessions that are supported by the
system.
In-Band Network Connection
The on-board configuration program can be accessed using Telnet from
any computer attached to the network. The switch and stack can also be
managed by any computer using a Web browser (Internet Explorer 4.0
or above, or Netscape Navigator 4.0 or above), or from a network
computer using network management software.
Note
The on-board program only provides access to basic configuration
functions. To access the full range of SNMP management functions,
you must use SNMP-based network management software.
19
Chapter 2
Using the System Configuration
Program
Login Screen
Once a direct connection to the serial port or a Telnet connection is
established, the login screen for the on-board configuration program
appears. If this is your first time to log into the configuration program,
then the default user names are "admin" and "guest," with no password.
The administrator has Read/Write access to all configuration parameters
and statistics, while the guest has Read Only access to the management
program.
AT-8324SX version 1.12
V1.12 05-10-2000 (c) Copyright by Allied Telesyn
User Name :
Password :
You should define a new administrator password, record it and put it in a
safe place. Select Console Login Configuration from the Management
Setup Menu and enter a a new password for the administrator. Note that
passwords can consist of up to 11 alphanumeric characters and are not
case sensitive.
Note
Based on the default configuration, a user is allowed three attempts
to enter the correct password; on the third failed attempt the current
connection is terminated.
21
Using the System Configuration Program
Main Menu
With the system configuration program you can define system
parameters, manage and control the switch, the connected stack and all
its ports, or monitor network conditions. The figure below of the Main
Menu and the following table briefly describe the selections available
from this program.
Note
Options for the currently selected item are displayed in the
highlighted area at the bottom of the interface screen.
Main Menu
=========
System Information Menu ...
Management Setup Menu ...
Device Control Menu ...
Network Monitor Menu ...
Restart System Menu ...
Exit
Use <TAB> or arrow keys to move. <Enter> to select.
22
AT-S29 Management Software User’s Guide
Menu
Description
System Information Menu:
System Information
Provides basic system description, including contact information.
Switch Information
Shows hardware/firmware version numbers, power status, and
expansion modules used in the stack.
Management Setup Menu:
Network Configuration
Includes IP setup, Ping facility, HTTP (Web Agent) setup, Telnet
enable, and MAC address.
Serial Port Configuration
Sets communication parameters for the serial port, including
management mode, baud rate, console time-out, and screen data
refresh interval.
SNMP Configuration
Activates traps; and configures communities and trap managers.
Console Login
Configuration
Sets the user names and passwords for system access, as well as the
invalid password threshold and lockout time.
TFTP Download
Downloads new version of firmware to update your system (inband).
Device Control Menu:
Port Configuration
Enables any port, enables/disables flow control, and sets
communication mode to auto-negotiation, full duplex or half
duplex.
Port Information
Displays operational status, including link state, flow control
method, and duplex mode.
Spanning Tree
Configuration
Enables Spanning Tree Algorithm; also sets parameters for hello
time, maximum message age, switch priority, and forward delay; as
well as port priority and path cost.
Spanning Tree
Information
Displays full listing of parameters for Spanning Tree Algorithm.
Mirror Port Configuration
Specifies the source and target ports for mirroring.
Port Trunking
Configuration
Specifies ports to group into aggregate trunks.
IGMP Configuration
Configures IGMP multicast filtering.
Extended Bridge
configuration
Displays/configures extended bridge capabilities provided by this
switch, including support for traffic classes, GMRP multicast
filtering, and VLAN extensions.
802.1P Configuration
Configures default port priorities and queue assignments.
23
Using the System Configuration Program
Menu
Description
802.1Q VLAN Base
Information
Displays basic VLAN information, such as VLAN version number and
maximum VLANs supported.
802.1Q VLAN Current
Table Information
Displays VLAN groups and port members.
802.1Q VLAN Static Table
Configuration
Configures VLAN groups via static assignments, including setting
port members, or restricting ports from being dynamically added
to a port by the GVRP protocol.
802.1Q VLAN Port
Configuration
Displays/configures port-specific VLAN settings, including PVID,
ingress filtering, and GVRP.
Port GARP Configuration1
Configures settings used in multicast filtering.
Port GMRP Configuration1 Configures GMRP multicast filtering.
Network Monitor Menu:
Port Statistics
Displays statistics on network traffic passing through the selected
port.
RMON Statistics
Displays detailed statistical information for the selected port such
as packet type and frame size counters.
Unicast Address Table
Provides full address listing, as well as search and clear functions.
Multicast Address
Registration Table1
-
IP Multicast Registration
Table
Displays all the multicast groups active on this switch, including
multicast IP addresses and corresponding VLAN IDs.
Static Unicast Address
Table Configuration
Used to manually configure host MAC address in the unicast table.
Static Multicast Address
Table Configuration1
-
Restart System
Restarts system with options to use POST, or to retain factory
defaults, IP settings, or user authentication settings.
Exit
Exits the configuration program.
1. Not implemented in this firmware release.
24
AT-S29 Management Software User’s Guide
System Information Menu
Use the System Information Menu to display a basic description of the
switch, including contact information, and hardware/ firmware versions.
System Information Menu
=======================
System Information ...
Switch Information ...
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
Displaying
System
Information
Use the System Information screen to display descriptive information
about the switch or for quick system identification, as shown in the
following figure and table.
System Information
==================
System Description : AT-8324SX version 1.12
System Object ID
: 1.3.6.1.4.1.207.1.4.42
System Up Time
: 48067 (0 day, 1 hr, 2min, 34 sec)
System Name
: Engineering Unit #001
System Contact
: MIS Dept.
System Location
: Lab #3
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
25
Using the System Configuration Program
Parameter
Description
System Description
System hardware description.
System Object ID
MIB II object identifier for switch’s network
management subsystem
(ATI: 207.1.4.42)
System Up Time
Length of time the current management agent
has been running. (Note that the first value is
1/100 seconds.)
System Name1
Name assigned to the switch system.
System Contact1
Contact person for the system.
System Location 1
Specifies the area or location where the system
resides.
1. Maximum string length is 99, but the screen only displays 45 characters. You can use the arrow keys to
browse the whole string.
Displaying
Version and
Module
Information
Use the Switch Information screen to display hardware/firmware version
numbers for the main board and agent modules, as well as the power
status and modules plugged into the system.
Screen Information: Unit 1
=================
Main Board
Hardware Version
Firmware Version
Serial Number
Port Number
Internal Power Status
Redundant Power Status
Expansion Slot 1
Expansion Slot 2
:
:
:
:
:
:
:
:
V3.0
1.11
00-30-84-9A-3B-80
25
Active
Inactive
1000Base-SX
Stacking
Agent Module
Hardware Version
POST ROM Version
Firmware Version
SNMP Agent
<APPLY>
<OK>
:
V2.0 (801 CPU)
:
:
:
1.10
1.12
Master
<CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
26
AT-S29 Management Software User’s Guide
Menu
Description
Main Board:
Hardware Version
Hardware version of the main board.
Firmware Version
System firmware version in ROM.
Serial Number
MAC address associated with the main
board.
Port Number
Number of ports in this unit.
Internal Power Status
Power status for the switch.
Redundant Power Status
Redundant power status for the switch.
Expansion Slot 1
Shows module type if inserted (100BaseFX, 1000Base-SX, or 1000Base-LX).
Expansion Slot 2
Shows module type if inserted (100BaseFX, 1000Base-SX, 1000Base-LX, or Stack).
Menu
Description
Agent Module:
Hardware Version
Hardware version of the agent module.
POST ROM Version
Power-On Self-Test version number.
Firmware Version
Firmware version of the agent module.
SNMP Agent
Shows if this module is Master or
Backup.
27
Using the System Configuration Program
Management Setup Menu
After initially logging onto the system, adjust the communication
parameters for your console to ensure a reliable connection (Console
Configuration menu). Specify the IP addresses for the agent module
(Network Configuration / IP Configuration), and then set the
Administrator and User passwords (Console Login Configuration).
Remember to record them in a safe place. Also set the community string
which controls access to the on-board SNMP agent via in-band
management software (SNMP Configuration). The items provided by the
Management Setup Menu are described in the following sections.
Management Setup
=================
Network Configuration ...
Serial Port Configuration ...
SNMP Configuration ...
Console Login Configuration ...
TFTP Download ...
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
28
AT-S29 Management Software User’s Guide
Changing the
Network
Configuration
Use the Network Configuration menu to set the bootup option,
configure the switch’s Internet Protocol (IP) parameters, enable the onboard Web Agent, or enable Telnet access. The screen shown below is
described in the following table.
Network Configuration
=================
IP Configuration ...
IP Connectivity Test (Ping) ...
HTTP Configuration ...
MAX Number of Allowed Telnet Sessions (1 -4) : 2
MAC Address : 00-30-84-9A-3B-80
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
Parameter
Description
IP Configuration
Screen used to set the bootup option, or
configure the switch’s IP parameters.
IP Connectivity Test (Ping)
Screen used to test IP connectivity to a
specified device.
HTTP Configuration
Screen used to enable Web Agent.
MAX Number of Allowed
Telnet Sessions
The maximum number of Telnet
sessions allowed to simultaneously
access the agent module.
MAC Address
Physical address of the agent module.
29
Using the System Configuration Program
IP Configuration
Use the IP Configuration screen to set the bootup option, or configure
the switch’s IP parameters. The screen shown below is described in the
following table.
Network Configuration IP Configuration
=================
Interface Type :
Ethernet
IP Address
:
149.35.19.10
Subnet Mask
:
255.255.255.0
Gateway IP
:
149.35.1.1
IP State
:
USER-CONFIG
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move, other keys to make
changes.
<Space> to toggle.
Parameter
Default
Description
Ethernet Interface
IP Address
10.1.0.1
IP address of the stack you are managing when accessing the
agent module over the network. The agent module supports
SNMP over UDP/IP transport protocol. In this environment, all
systems on the Internet, such as network interconnection
devices and any PC accessing the agent module are assigned
an IP address.
Valid IP addresses consist of four numbers, of 0 to 255, and
separated by periods. Anything outside of this format will not
be accepted by the configuration program.
Subnet Mask
255.255.0.0
Subnet mask of the agent you have selected. This mask
identifies the host address bits used for routing to specific
subnets.
30
AT-S29 Management Software User’s Guide
Parameter
Default
Description
Default
Gateway
0.0.0.0
Gateway used to pass trap messages from the switch’s agent
to the management station. Note that the gateway must be
defined if the management station is located in a different IP
segment.
IP State
USERCONFIG
Specifies whether IP functionality is enabled via manual
configuration, or set by Boot Protocol (BootP). Options include:
USER-CONFIG - IP functionality is enabled based on the default
or user specified IP Configuration. (This is the default setting.)
BootP Get IP - IP is enabled but will not function until a BootP
reply has been received. BootP requests will be periodically
broadcast by the switch in an effort to learn its IP address.
(BootP values include the IP address, default gateway, subnet
mask, TFTP boot file name, and TFTP server IP.)
IP Connectivity Test (Ping)
Use the IP Connectivity Test to see if another site on the Internet can be
reached. The screen shown below is described in the following table.
Network Configuration IP Connectivity Test (Ping)
=================
IP Address
: 149.35.211.109
Test Times
: 1000
Interval : 1
Success
: 1000
Failure
: 0
[Start]
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
Parameter
Description
IP Address
IP address of the site you want to ping
Test Times
The number of ICMP echo requests to send to the specified site
(1~1000)
Interval
The interval (in seconds) between pinging the specified site (1~ 10
seconds)
Success/Failure
The number of times the specified site has responded or not to pinging
31
Using the System Configuration Program
HTTP Configuration
Use the HTTP Configuration screen to enable/disable the on-board Web
Agent, and to specify the TCP port that will provide HTTP service. The
screen shown below is described in the following table.
Network Configuration: HTTP Configuration
=================
HTTP Server
: ENABLED
HTTP Port Number : 80
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
32
Parameter
Description
HTTP Server
Enables/disables access to the on-board Web
Agent.
HTTP Port Number
Specifies the TCP port that will provide HTTP
service. (Range is 0~65535. Default is Port 80.
Telnet Port 23 is prohibited.)
AT-S29 Management Software User’s Guide
Configuring the
Serial Port
You can access the on-board configuration program by attaching a
VT100 compatible device to the switch’s serial port. (For more
information on connecting to this port, refer to the section on Making
the Connections Required for System Configuration on page 9.) The
communication parameters for this port are accessed from the Serial
Port Configuration screen seen below and described in the following
table.
Serial Port Configuration
========================
Management Mode
: CONSOLE MODE
Baud rate
:
Data bits
:
Stop bits
:
Parity
:
Time-Out (in minutes)
:
Auto Refresh (in seconds) :
<APPLY>
<OK>
9600
8
1
NONE
10
5
<CANCEL>
Use <TAB> or arrow keys to move. <Space> to select.
Parameter
Default
Description
Management
Mode
Console Mode
Indicates that the console port settings are for direct console
connection.
Baud Rate
9600 bps
The rate at which data is sent between devices. (Options:
2400, 4800, 9600, 19200 bps, and Auto detection).
Databits
8 bits
Sets the databits of the RS-232 port. (Options: 7, 8)
Stopbits
1 bit
Sets the stop bits of the RS-232 port. (Options: 1, 2)
Parity
none
Sets the parity of the RS-232 port. (Options: none/odd/even)
Time-Out
10 minutes
If no input is received from the attached device after this
interval (in minutes), the current session is automatically
closed. (Range: 0 - 60 minutes; where 0 indicates disabled.)
Auto Refresh
5 sec.
Sets the interval before a console session will auto refresh
the console information, including Spanning Tree
Information, Port Configuration, Port Statistics, and RMON
Statistics. (Range: 5 - 255 seconds; where 0 indicates
disabled.)
33
Using the System Configuration Program
Assigning SNMP
Parameters
Use the SNMP Configuration screen to display and modify parameters
for the Simple Network Management Protocol (SNMP). The switch
includes an on-board SNMP agent which monitors the status of its
hardware, as well as the traffic passing through its ports. A computer
attached to the network, called a Network Management Station (NMS),
can be used to access this information. Access rights to the on-board
agent are controlled by community strings. To communicate with the
switch, the NMS must first submit a valid community string for
authentication. The options for configuring community strings and
related trap functions are described in the following figures and table:
SNMP Configuration
=================
Send Authentication Fail Traps
: ENABLED
SNMP Communities ...
IP Trap Managers ...
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move. <Space> to scroll
options. <Enter> to select.
34
Name
Description
Send Authentication Fail
Traps
Issue a trap message to specified IP trap
managers whenever authentication of
an SNMP request fails. (The default is
enabled.)
SNMP Communities
Assigns SNMP access based on specified
community strings.
IP Trap Managers
Specifies management stations that will
receive authentication failure messages
or other trap messages from the switch.
AT-S29 Management Software User’s Guide
Configuring Community Names
The following figure and table describe how to configure the
community strings authorized for trap management access. Up to 5
community names may be entered.
SNMP Configuration: SNMP Communities
=================
Community Name
1.
2.
3.
4.
5.
public
private
netman
<APPLY>
Access
Status
READ ONLY
READ/WRITE
READ/WRITE
ENABLED
ENABLED
ENABLED
<OK>
<CANCEL>
Use <TAB> or arrow keys to move, other keys to make
changes.
<Space> to scroll options.
Parameter
Description
Community Name
A community entry authorized for trap
management access.
Default string: public (read/write
Maximum string length: 19 characters
Access
Management access is restricted to Read
Only or Read/Write.
Status
Sets administrative status of entry to
enabled or disabled.
35
Using the System Configuration Program
Configuring IP Trap Managers
The following figure and table describe how to specify management
stations that will receive authentication failure messages or other trap
messages from the switch. Up to 5 trap managers may be entered.
SNMP Configuration: IP Trap Managers
=====================
IP Address
1.
2.
3.
4.
5.
149.35.19.20
<APPLY>
Community Name Status
public
<OK>
DISABLED
<CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
<Space> to scroll options.
36
Parameter
Description
IP Address
IP address of the trap manager.
Community Name
A community specified for trap
management access.
Status
Sets administrative status of entry to
enabled or disabled.
AT-S29 Management Software User’s Guide
Console Login
Configuration
Use the Management Setup: Console Login Configuration to restrict
management access based on specified user names and passwords, or
to set the invalid password threshold and timeout. There are two user
types, Administrator and Guest. Only the Administrator has write access
for parameters governing the SNMP agent. You should therefore assign
a user name and password to the Administrator as soon as possible, and
store it in a safe place. (If for some reason your password is lost, or you
cannot gain access to the System Configuration Program, contact your
Allied Telesyn distributor for assistance.) The parameters shown on this
screen are indicated in the following figure and table.
Console Login Configuration
=================
Password Threshold
Lock-out Time (in minutes)
:
:
3
0
User Type
User Name
Password
------------------------------------------1. ADMIN :
2. GUEST
3.
4.
5.
admin
guest
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move. other keys to make
changes.
Parameter
Default
Description
Password
3
Sets the password intrusion threshold which limits the number of
failed logon attempts. (Range: 0~65500)
Lock-out Time
0
The time (in seconds) the management console will be disabled,
due to an excessive number of failed logon attempts. (Range:
0~65535)
Admin 1
name:
Administrator has access privilege of Read/Write for all screens.
admin
password
: null
Guest 1
name:
Guest has access privilege of Read Only for all screens.
guest
password
: null
1. Passwords can consist of up to 11 alphanumeric characters and are not case sensitive.
37
Using the System Configuration Program
Downloading
System Software
Using TFTP Protocol to Download Over the Network
Use the TFTP Download menu to load software updates into the switch.
The download file should be an AT-8324SX compressed binary file from
Allied Telesyn; otherwise the agent will not accept it. The success of the
download operation depends on the accessibility of the TFTP server and
the quality of the network connection. After downloading the new
software, the agent will automatically restart itself. Parameters shown on
this screen are indicated in the following figure and table.
TFTP Download
=============
Download Server IP
:
Agent Software Upgrade
Download Filename
Download Mode
: ENABLED
: AT-S29-V1.12
: PERMANENT
(Process TFTP Download)
Download status : Complete
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move. Other keys to make
changes.
<Space> to scroll options.<Enter> to select.
Parameter
Description
Download Server
IP
IP address of a TFTP server.
Agent Software Upgrade
Download
Filename
The binary file to download to the agent module.
Download Mode
Downloads to permanent flash ROM.
Process TFTP
Download
Issues request to TFTP server to download the
specified file.
Note
You can also download firmware using the Web agent or via a direct
console connection.
38
AT-S29 Management Software User’s Guide
Configuring the Switch
The Device Control menu is used to set the communication parameters
for individual ports and to fine-tune the performance of your switch.
Configuration menus are also provided for advanced functions, such as
Virtual LANs, port trunking, and port mirroring. Each of the setup screens
provided by the configuration menus is described in the following
sections.
Device Control Menu
===================
Port Configuration ...
Port Information ...
Spanning Tree Configuration ...
Spanning Tree Information ...
Mirror Port Configuration ...
Port Trunking Configuration ...
IGMP Configuration ...
Extended Bridge Configuration ...
802.1P Configuration ...
802.1P VLAN Base Information
802.1P Current Table Information
802.1P VLAN Static Table Configuration ...
802.1P VLAN Port Configuration ...
Port GARP Configuration ...
Port GMRP Configuration ...
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
Parameter
Description
Port Configuration
Enables any port, enables/disables flow control, and sets
communication mode to auto-negotiation, full- or half-duplex.
Port Information
Displays operational status, including link state, flow control method,
and duplex mode.
Spanning Tree
Configuration
Enables Spanning Tree Algorithm; also sets parameters for hello time,
maximum message age, switch priority, and forward delay; as well as
port priority and path cost.
Spanning Tree
Information
Displays a full listing of parameters for Spanning Tree Algorithm.
Mirror Port
Configuration
Sets the source and target ports mirroring.
Port Trunking
Configuration
Specifies ports to group into aggregate trunks.
IGMP Configuration
Configures IGMP multicast filtering.
Extended Bridge
Configuration
Displays/configures extended bridge capabilities provided by this
switch, including support
39
Using the System Configuration Program
Parameter
Description
802.1P Configuration
Configures default port priorities and queue assignments.
802.1Q VLAN Base
Information
Displays basic VLAN information, such as VLAN version number and
maximum VLANs supported.
802.1Q VLAN Current
Table Information
Displays VLAN groups and port members.
802.1Q VLAN Static
Table Configuration
Configures VLAN groups via static assignments, including settings port
members, or restricting ports from being dynamically added to a port
by the GVRP protocol.
802.1Q VLAN Port
Configuration
Displays/configures port-specific VLAN settings, including PVID, ingress
filtering, and GVRP.
Port GARP
Configuration1
Configures generic attribute settings used in the spanning tree
protocol, VLAN registration, multicast filtering.
Port GMRP
Configuration1
Configures GMRP multicast filtering.
1. Not implemented in this firmware release.
40
AT-S29 Management Software User’s Guide
Configuring Port
Parameters
Use the Port Configuration menus to configure any port or module on
the switch.
Port Configuration: Unit 1 Port 1-12
=====================
Port
Flow
Speed and
Control Duplex
----------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
Type
Admin
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
DISABLED
ENABLED
DISABLED
ENABLED
DISABLED
DISABLED
ENABLED
ENABLED
ENABLED
ENABLED
ENABLED
10-HALF
100-FULL
AUTO
AUTO
10-FULL
100-HALF
AUTO
AUTO
AUTO
AUTO
AUTO
AUTO
<APPLY> <OK> <CANCEL> <PREV Unit> <NEXT UNIT> <PREV
PAGE> <NEXT PAGE>
Use <TAB> or arrows keys to move. <Enter> to select.
<Space> to scroll options.
Parameter
Default
Type
Description
Shows port type as:
10/100TX:
10Base-T/100Base-TX
100FX :
100Base-FX
1000SX :
1000Base-SX
1000LX :
1000Base-LX
Admin
Enabled
Allows you to disable a port due to abnormal behavior (e.g.,
excessive collisions), and then re-enable it after the problem has
been resolved. You may also disable a port for security reasons.
Flow Control
Disabled
Used to enable or disable flow control. Flow control can eliminate
frame loss by "blocking" traffic from end stations or segments
connected directly to the switch when its buffers fill. Back
pressure is used for half duplex and IEEE 802.3x for full duplex.
Note that flow control should not be used if a port is connected to
a hub.
Speed and
Duplex
Auto
Used to set the current port speed, duplex mode, and autonegotiation.
Note
Auto-negotiation is not available for 100Base-FX ports.
41
Using the System Configuration Program
Viewing the
Current Port
Configuration
The Port Information screen displays the port type, status, link state, and
flow control in use, as well as the communication speed and duplex
mode. To change any of the port settings, use the configuration menu.
The parameters shown in the following figure and table are for the RJ-45
ports.
Port Information: Unit 1 Port 1-12
==================
Port Type
FlowControl Speed and
InUse
DuplexInUse
-----------------------------------------------------1. 10/100TX
2. 10/100TX
3. 10/100TX
4. 10/100TX
5. 10/100TX
6. 10/100TX
7. 10/100TX
8. 10/100TX
9. 10/100TX
10.10/100TX
11.10/100TX
12.10/100TX
Operational Link
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
DOWN
DOWN
UP
DOWN
DOWN
UP
DOWN
UP
UP
UP
UP
UP
----------------802.3x
----------------NONE
--------802.3x
802.3x
802.3x
802.3x
802.3x
----------------100-FULL
----------------100-HALF
100-HALF
100-FULL
100-FULL
100-FULL
100-FULL
100-FULL
<OK> <PREV Unit> <NEXT UNIT> <PREV PAGE> <NEXT PAGE>
Use <TAB> or arrows keys to move. <Enter> to select.
<Space> to toggle.
Parameter
Description
Type
Shows port type as:
10/100TX:
10Base-T / 100Base-TX
100FX:
100Base-FX
1000SX:
1000Base-SX
1000LX:
1000Base-LX
Operational
Shows if the port is functioning or not.
Link
Indicates if the port has a valid connection to an external device.
FlowControl InUse
Shows the flow control type in use. Flow control can eliminate
frame loss by "blocking" traffic from end stations connected
directly to the switch. Back pressure is used for half duplex and IEEE
802.3x for full duplex. Note that flow control should not be used if a
port is connected to a hub.
Speed and Duplex InUse
Displays the current port speed, duplex mode, and if autonegotiation is used. Note that auto-negotiation is available only for
RJ-45 and Gigabit ports (not 100Base-FX ports.)
42
AT-S29 Management Software User’s Guide
Using the
Spanning Tree
Algorithm
The Spanning Tree Algorithm 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 (that is,
STA compliant switch, bridge or router) in your network to ensure that
only one route exists between any two stations on the network. For a
more detailed description of how to use this algorithm, refer to Chapter
4.
Spanning Tree Configuration: Selection Menu
==============================
STA Bridge Configuration ...
STA Port Configuration ...
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrows keys to move. <Enter> to select.
Configuring Bridge STA
The following figure and table describe Bridge STA configuration.
Spanning Tree Configuration: Bridge STA Configuration
=============================
Spanning Tree Protocol
: ENABLED
Priority
: 32768
Hello Time (in seconds)
: 2
Max Age (in seconds)
: 20
Forward Delay (in seconds): 15
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move, <Space> to scroll
options, other keys to make changes.
43
Using the System Configuration Program
Parameter
Default
Description
Spanning Tree
Protocol
Enabled
Enable this parameter to participate in an STA compliant network.
Priority
32,768
Device priority is used in selecting the root device, root port, and
designated port. The device with the highest priority becomes the
STA root device. However, if all devices have the same priority, the
device with the lowest MAC address will then become the root
device.
Enter a value from 0 - 65535.
Remember that the lower the numeric value, the higher the
priority.
Hello Time
2
Time interval (in seconds) at which the root device transmits a
configuration message.
Minimum value: 1
Maximum value: lower of 10 or [(Max. Message Age / 2) -1]
Max (Message)
Age
20
The maximum time (in seconds) a device can wait without
receiving a configuration message before attempting to
reconfigure. All device ports (except for designated ports) should
receive configuration messages at regular intervals. Any port that
ages out STA information (provided in the last configuration
message) becomes the designated port for the attached LAN. If it
is a root port, a new root port is selected from among the device
ports attached to the network.
The minimum value is the higher of 6 or [2 x (Hello Time + 1)].
The maximum value is the lower of 40 or [2 x (Forward Delay - 1)].
Forward Delay
15
The maximum time (in seconds) the root device will wait before
changing states (i.e., listening to learning to forwarding). This
delay is required because every device must receive information
about topology changes before it starts to forward frames. In
addition, each port needs time to listen for conflicting information
that would make it return to a blocking state; otherwise,
temporary data loops might result.
The maximum value is 30.
The minimum value is the higher of 4 or [(Max. Message Age / 2) +
1].
44
AT-S29 Management Software User’s Guide
Configuring STA for Ports or Modules
The following figure and table describe STA configuration for ports or
modules. (Note that the Spanning Tree Configuration screen for the
expansion slots also indicates module type.)
Spanning Tree Port Configuration: Unit 1 Port 1-12
==================================
Port
Type
Priority
Cost
---------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
10/100TX
128
128
128
128
128
128
128
128
128
128
128
128
5
19
19
19
19
19
19
19
19
19
19
19
<APPLY><OK><CANCEL><PREV UNIT><NEXT UNIT><PREV PAGE><NEXT PAGE>
Use <TAB> or arrows keys to move, other keys to make changes
Parameter
Default
Type
Description
Shows port type as 10/100TX, 100FX, 1000SX or 1000LX.
Priority
128
Defines the priority for the use of a port in the STA algorithm. If the
path cost for all ports on a switch are the same, the port with the
highest priority (i.e., lowest value) will be configured as an active link
in the spanning tree. Where more than one port is assigned the
highest priority, the port with lowest numeric identifier will be
enabled. The range is 0 - 255.
(Path) Cost
100/19/4
This parameter is used by the STA algorithm to determine the best
path between devices. Therefore, lower values should be assigned to
ports attached to faster media, and higher values assigned to ports
with slower media.
The default and recommended range is:
Standard Ethernet: 100 (50~600)
Fast Ethernet: 19 (10~60)
Gigabit Ethernet: 4 (3~10)
The full range is 0 - 65535.
Note: Path cost takes precedence over port priority.
45
Using the System Configuration Program
Viewing the
Current Spanning
Tree
Configuration
The Spanning Tree Information screen displays a summary of the STA
information for the overall bridge or for a specific port or module. To
make any changes to the parameters for the Spanning Tree, use the
Spanning Tree Configuration menu.
Spanning Tree Information: Selection Menu
============================
STA Bridge Information ...
STA Port Information ...
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
Displaying the Current Bridge STA
The parameters shown in the following figure and table describe the
current Bridge STA Information.
Spanning Tree Information: Bridge STA Information
============================
Priority
Hello Time (in seconds)
Max Age (in seconds)
Forward Delay (in seconds)
Hold Time (in seconds)
Designated Root
Root Cost
Root Port
Reconfig Counts
Topology Up Time
:
:
:
:
:
:
:
:
:
:
65535
2
20
5
1
128.0000E8123456
5
1
3
0 day, 1 hr, 2min, 34 sec
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
46
AT-S29 Management Software User’s Guide
Parameter
Description
Priority
Device priority is used in selecting the root
device, root port, and designated port. The
device with the highest priority becomes the STA
root device. However, if all devices have the same
priority, the device with the lowest MAC address
will then become the root device.
Hello Time
The time interval (in seconds) at which the root
device transmits a configuration message.
Max Age
The maximum time (in seconds) a device can wait
without receiving a configuration message
before attempting to reconfigure.
Forward Delay
The maximum time (in seconds) the root device
will wait before changing states (i.e., listening to
learning to forwarding).
Hold Time
The minimum interval between the transmission
of consecutive Configuration BPDUs.
Designated Root
The priority and MAC address of the device in the
spanning tree that this switch has accepted as
the root device.
Root Cost
The path cost from the root port on this switch to
the root device.
Root Port
The number of the port on this switch that is
closest to the root. This switch communicates
with the root device through this port. If there is
no root port, then this switch has been accepted
as the root device of the spanning tree network.
Reconfig Counts
The number of times the spanning tree has been
reconfigured.
Topology Up Time
The time since the spanning tree was last
reconfigured.
47
Using the System Configuration Program
Displaying the Current STA for Ports or Modules
The parameters shown in the following figure and table are for port or
module STA Information (Port 1-12, Port 13-24, Expansion Slot 1 or
Expansion Slot 2).
Spanning Tree Information: Unit 1 Port 1-12
============================
Port Type
Status
Designated
Designated
Designated
Cost
Bridge
Port
-----------------------------------------------------------1. 10/100TX
2. 10/100TX
3. 10/100TX
4. 10/100TX
5. 10/100TX
6. 10/100TX
7. 10/100TX
8. 10/100TX
9. 10/100TX
10.10/100TX
11.10/100TX
12.10/100TX
FORWARDING
FORWARDING
FORWARDING
FORWARDING
FORWARDING
LISTENING
LEARNING
FORWARDING
FORWARDING
FORWARDING
FORWARDING
FORWARDING
0
19
19
19
19
19
19
19
19
19
19
19
128.0000f4123456 128.3
32768.0000f4123457128.1
32768.0000f4123458128.1
32768.0000f4123459128.5
32768.0000f412345a128.6
32768.0000f412345b128.3
32768.0000f4123456128.3
32768.0000f4123457128.3
32768.0000f4123458128.4
32768.0000f4123459128.5
32768.0000f4123459128.5
32768.0000f4123459128.5
<OK> <PREV Unit> <NEXT UNIT> <PREV PAGE> <NEXT PAGE>
Use <TAB> or arrows keys to move. <Enter> to select.
48
AT-S29 Management Software User’s Guide
Parameter
Description
Type
Shows port type as:
10/100TX:
10Base-T / 100Base-TX
100FX:
100Base-FX
1000SX:
1000Base-SX
1000LX:
1000Base-LX
Status
Displays the current state of this port within the
spanning tree:
Disabled: Port has been disabled by the user or has
failed diagnostics
Blocked: Port receives STA configuration messages,
but does not forward packets.
Listening: Port will leave blocking state due to
topology change, starts transmitting configuration
messages, but does not yet forward packets.
Learning: Has transmitted configuration messages for
an interval set by the Forward Delay parameter
without receiving contradictory information. Port
address table is cleared, and the port begins learning
addresses.
Forwarding: The port forwards packets, and continues
learning addresses.
The rules defining port status are:
A port on a network segment with no other STA
compliant bridging device is always forwarding.
If two ports of a switch are connected to the same
segment and there is no other STA device attached to
this segment, the port with the smaller ID forwards
packets and the other is blocked.
All ports are blocked when the switch is booted, then
some of them change state to listening, to learning,
and then to forwarding.
Designated
Cost
The cost for a packet to travel from this port to the root
in the current spanning tree configuration. The slower
the media, the higher the cost.
Designated
Bridge (ID)
The priority and MAC address of the device through
which this port must communicate to reach the root of
the spanning tree.
Designated
Port (ID)
The priority and port on the designated bridging
device through which this switch must communicate
with the root of the spanning tree.
49
Using the System Configuration Program
Using a Mirror
Port for Analysis
You can mirror traffic from any source port to a target port for real-time
analysis. You cana then attach a logic analyzer or RMON probe to the
target port and study the traffic crossing the source port in a completely
unobtrusive manner. When mirroring port traffic, not that the target
port must be included in the same VLAN as the source port.
You can use the Mirror Port Configuration screen to designate a single
port pair for mirroring as shown below:
Mirror Port Configuration
=========================
Mirror Source Port
: Unit 1
: Port 1
Mirror Target Port
: Unit 1
: Port 2
Status
: DISABLED
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
Parameter
50
Description
Mirror Source
Port
The port whose traffic will be monitored.
Mirror Target
Port
The port that will “duplicate” or “mirror” all the
traffic happening on the monitored port.
Status
Enables or disables the mirror function.
AT-S29 Management Software User’s Guide
Configuring Port
Trunks
Port trunks can be used to increase the bandwidth of a network
connection or to ensure fault recovery. You can configure up to four
trunk connections (combining 2 to 4 ports into a fat pipe) between any
two AT-8324SX switches. However, before making any physical
connections between devices, us the Trunk Configuration menu to
specify the trunk on the devices at both ends. When using a port trunk,
note that:
❑
The ports used in a trunk must all be of the same media type (RJ45, 100 Mbps fiber, 1000 Mbps fiber). The ports that can be
assigned to the same trunk have certain other restrictions as
described later in this section.
❑
Ports can only be assigned to one trunk.
❑
The ports at both ends of a connection must be configured /as
trunk ports.
❑
The ports at both ends of a trunk must be configured in an
identical manner, including speed, duplex mode, and VLAN
assignments.
❑
The communication mode must be configured identically at both
ends of the trunk.
❑
None of the ports in a trunk can be configured as a mirror source
port or a mirror target port.
❑
All the ports in a trunk have to be treated as a whole when moved
from/to added, or deleted from a VLAN.
❑
The Spanning Tree Algorithm will treat all the ports in a trunk as a
whole.
❑
Enable the trunk prior to connecting any cable between the
switches to avoid creating a loop.
❑
Disconnect all trunk port cables or disable the trunk ports before
removing a port trunk to avoid creating a loop.
51
Using the System Configuration Program
You can use the Port Trunking Configuration screen to set up port trunks
as shown below:
Port Trunking Configuration
===========================
Trunk ID Status
Member List
------
1
2
3
4
----------------------------------------
---
---------
Unit : Port : -
Unit : Port : -
Unit : Port : -
Unit : Port : -
---
---------
Unit : Port : -
Unit : Port : -
Unit : Port : -
Unit : Port : -
---
---------
Unit : Port : -
Unit : Port : -
Unit : Port : -
Unit : Port : -
-------
Trunk ID : 1
Trunk ID : 1
Member Unit : 1
Member Port : 1
[Show]
[Enable]
[Add]
[Delete]
[More]
[Disable]
<OK>
Use <TAB> or arrow keys to move, other keys to make changes.
Parameter
Description
Trunk ID
Configure up to four trunks per switch.
Unit
Specifies a switch unit in the stack (1 to 4).
Port
Select from 2 to 4 ports per trunk.
[Show]
Displays trunk settings, where the first trunk listed is specified by “Trunk
ID.”
[More]
Scrolls through the list of configured trunks.
[Enable] [Disable]
Enables/disables the selected trunk.
[Add] [Delete]
Adds/deletes the port specified by Trunk ID / Member Unit / Member Port.
52
AT-S29 Management Software User’s Guide
The RJ-45 ports used for each trunk must all be on the same internal
switch chip. The port groups permitted include:
❑
Group 1: 1, 2, 3, 4 and 13, 14, 15, 16
❑
Group 2: 5, 6, 7, 8 and 17, 18, 19, 20
❑
Group 3: 9, 10, 11, 12 and 21, 22, 23, 24
The 100Base-FX fiber optic ports used for one side of a trunk must all be
on the same module. However, the 1000Base-SX and 1000Base-LX ports
used for one side of a trunk may be on any switch in the stack, or both on
the same switch if used as a standalone switch.
For example, when using Gigabit ports to form a trunk within a stack, the
Gigabit ports will all be at Port 25. In this case, you could specify a trunk
group consisting of:
(Unit1-Port25, Unit2-Port25, Unit3-Port25, Unit4-Port25)
or two trunks consisting of:
(Unit1-Port25, Unit2-Port25) and (Unit3-Port25, Unit4-Port25)
IGMP Multicast
Filtering
Multicasting is used to support real-time applications such as video
conferencing or streaming audio. A multicast server does not have to
establish a separate connection with each client. It merely broadcasts its
services to the network, and any hosts which want to receive the
multicast register with their local multicast switch/router. Although this
approach reduces the network overhead required by a multicast server,
the broadcast traffic must be carefully pruned at every multicast
server/router it passed through to ensure that traffic is only passed on
the hosts which subscribe to this service.
This switch uses IGMP (Internet Group Management Protocol) to query
for any attached hosts who want to receive a specific multicast service.
The switch looks up the IP Multicast Group used for this service and adds
any port which received a similar request to that group. It then
propagates the service request on to any neighboring multicast
switch/router to ensure that it will continue to receive the multicast
service.
53
Using the System Configuration Program
Configuring IGMP
This protocol allows a host to inform its local switch/router that it wants
to receive transmissions addressed to a specific multicast group. You can
use the IGMP Configuration screen to configure multicast filtering
shown below:
IGMP Configuration
==================
IGMP Status
:
ENABLED
Act as IGMP Querier
:
DISABLED
IGMP Query Count
:
5
IGMP Report Delay (Minutes)
:
5
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move. <Space> to scroll
option.
Other keys to make changes.
Parameter
Description
IGMP Status
If enabled, the switch will monitor network traffic to determine
which hosts want to receive multicast traffic.
ACT as IGMP Querier
If enabled, the switch can serve as the “querier,” which is
responsible for asking hosts if they want to receive multicast traffic.
(Not available for the current firmware release.)
IGMP Query Count
The maximum number of queries issued for which there has been
no response before the switch takes action to solicit reports.
IGMP Report Delay
The time (in minutes) between receiving an IGMP Report for an IP
multicast address on a port before the switch sends an IGMP Query
out that port and removes the entry from its list.
Note
The default values are indicated in the sample screen.
54
AT-S29 Management Software User’s Guide
Configuring
Bridge MIB
Extensions
The Bridge MIB includes extensions for managed devices that support
Traffic Classes, Multicast Filtering and Virtual LANs. To configure these
extensions, use the Extended Bridge Configuration screen as shown
below:
Extended Bridge Configuration
============================
Bridge Capability : (Read Only)
Extended Multicast Filtering Services: NO
Traffic Classes
: YES
Static Entry Individual Port
: YES
VLAN Learning
: IVL
Configurable PVID Tagging
: YES
Local VLAN Capable
: NO
Bridge Settings :
Traffic Class
GMRP
GVRP
<APPLY>
: FALSE
: DISABLED
: DISABLED
<OK>
<CANCEL>
Use <TAB> or arrow keys to move. <Space> to scroll
option.
Parameter
Description
Bridge Capability
Extended Multicast
Filtering Services
Enables filtering of individual multicast addresses based on GMRP
(GARP Multicast Registration Protocol). Note that this function is not
available for the current firmware release.
Traffic Classes
Provides mapping of user priorities to multiple traffic classes. (Refer to
802.1p Configuration.)
Static Entry Individual
Port
Enables static filtering for unicast and multicast addresses. (Refer to
the Network Monitor Menu / Static Unicast Address Table
Configuration and Static Multicast Address Table Configuration.)
VLAN Learning
This switch uses Independent VLAN Learning (IVL), whereby each port
maintains its own VLAN filtering database.
Configurable PVID
Tagging
Allows you to override the default PVID setting (Port VLAN ID used in
frame tags) and its egress status (VLAN-Tagged or Untagged) on each
port. (Refer to 802.1Q VLAN Port Configuration.
Local VLAN Capable
This switch does not support multiple local bridges (that is, multiple
Spanning Trees).
55
Using the System Configuration Program
Parameter
Description
Bridge Settings
Traffic Class1
Multiple traffic classes are supported by this switch as indicated under
Bridge Capabilities. However, you can disable this function by setting
this parameter to False. Note that this function is not available for the
current firmware release.
GMRP1
GARP Multicast Registration Protocol (GMRP) allows network devices
to register endstations with multicast groups. Note that this function is
not available for the current firmware release.
The Internet Group Management Protocol (IGMP) is currently used by
this switch to provide automatic multicast filtering.
GVRP1
GARP VLAN Registration Protocol (GVRP) defines a way for switches to
exchange VLAN information in order to register necessary VLAN
members on ports across the network. This function should be
enabled to permit VLAN groups that extend beyond the local switch.
1. Not available in this firmware release.
Configuring
Traffic Classes
IEEE 802.1p defines up to eight separate traffic classes. This switch
supports Quality of Service (QoS) by using two priority queues, with
weighted fair queuing for each port. You can use the 802.1P
Configuration menu to configure the default priority for each port, or to
display the mapping for the traffic classes as described in the following
sections:
802.1P Configuration : Selection Menu
====================================
802.1P Port Priority Configuration ...
802.1P Port Traffic Class Information ...
<OK>
Use <TAB> or arrow keys to move. <Enter> to select.
56
AT-S29 Management Software User’s Guide
Port Priority Configuration
The default priority for all ingress ports is zero. Therefore, any inbound
frames that do not have priority tags will be placed in the low priority
outlet queue. Default priority is only used to determine the output
queue for the current port; no priority tag is actually added to the frame.
You can use the 802.1P Port Priority Configuration menu to adjust
default priority for any port as shown below:
802.1P Port Priority Configuration : Unit 1 Port 1 - 12
=======================================
Port
Default Ingress
Number of Egress
User Priority
Traffic Class
----------------------------------------------------1
2
3
4
5
6
7
8
9
10
11
12
0
0
0
0
0
0
0
0
0
0
0
0
2
2
2
2
2
2
2
2
2
2
2
2
<APPLY> <OK> <CANCEL> <PREV Unit> <NEXT UNIT> <PREV
PAGE> <NEXT PAGE>
Use <TAB> or arrows keys to move, other keys to make
changes.
Parameter
Description
Port
Numeric identifier for switch port.
Default Ingress
User Priority
Default priority can be set to any value from 0-7,
where 0-3 specifies the low priority queue and 47 specifies the high priority queue.
Number of Egress
Traffic Classes
Indicates that this switch supports two priority
output queues.
57
Using the System Configuration Program
802.1p Port Traffic Class Information
This switch provides two priority levels with weighted fair queuing for
port egress. This means that any frames with a default or user priority
from 0-3 are sent to the low priority queue “0” while those from 4-7 are
sent to the high priority queue “1” as shown in the following screen:
802.1P Port Priority Configuration : Unit 1 Port 1 - 12
=======================================
Port
User Priority
0
1
2
3
4
5
6
7
------------------------------------------1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
<OK> <PREV UNIT> <NEXT UNIT> <PREV PAGE> <NEXT PAGE>
Use <TAB> or arrows keys to move, other keys to make
changes.
Configuring
Virtual LANs
Parameter
Description
Port
Numeric identifier for switch port.
User Priority
Shows that user priorities 0-3 specify the low
priority queue and 4-7 specify the high priority
queue.
Use the VLAN Configuration menu to assign any port on the switch to
any of up to 16 LAN groups. In conventional networks with routers,
broadcast traffic is split up into separate domains. Switches do not
inherently support broadcast domains. This can lead to broadcast
storms in large networks that handle a lot of IPX traffic. By using IEEE
802.1Q compliant VLANs and GARP VLAN Registration Protocol, you can
organize any group of network nodes into separate broadcast domains,
confining broadcast traffic to the originating group. This also provides a
more secure and much cleaner network environment.
For a more detailed description of how to use VLANs, see Chapter 4. The
VLAN configuration screens are described in the following sections.
58
AT-S29 Management Software User’s Guide
802.1Q VLAN Base Information
The 802.1Q VLAN Base Information screen displays basic information on
the VLAN type support by this switch.
802.1Q VLAN Base Information
=============================
VLAN Version Number
: 1
MAX VLAN ID
: 2048
MAX Supported VLANs
: 16
Current Number of 802.1Q VLANs Configured : 1
APPLY> <OK> <CANCEL> <PREV Unit> <NEXT UNIT> <PREV PAGE>
<NEXT PAGE>
Use <TAB> or arrows keys to move, other keys to make
changes.
Parameter
Description
VLAN Version
Number
The VLAN version used by this switch as specified
in the IEEE 802.1Q standard.
MAX VLAN ID
Maximum VLAN ID recognized by this switch.
MAX Supported
VLANs
Maximum number of VLANs that can be
configured on this switch.
Current Number of The number of VLANs currently configured on
VLANs Configured this switch.
802.1Q VLAN Current Table Information
This screen shows the current port members of each VLAN and whether
or not the port supports VLAN tagging. Ports assigned to a large VLAN
group that crosses several switches should use VLAN tagging. However,
if you just want to create a small port-based VLAN for one or two
switches, you can assign ports to the same untagged VLAN. The current
configuration is shown in the following screen.
59
Using the System Configuration Program
802.1Q VLAN Current Table Information
======================================
Deleted VLAN Entry Counts : 0
VID
Creation time
Status
------------------------------------------------------1
Unit
1.
2.
3.
4.
0 (0 day 0 hr 0 sec)
Current Egress Ports
111111111111
----------------------------------
Sorted by VID : 1
111111111111
----------------------------------
Port 1
Dynamic GVRP
Current Untagged Ports
1---111111111111
----------------------------------------------
Port 13
111111111111
----------------------------------
1------------
Port 25
[Show] [More]
<OK>
Use <TAB> or arrows keys to move. <Enter> to select.
Parameter
Description
Deleted VLAN Entry
Counts
The number of times a VLAN entry has been deleted from this
table.
VID
The ID for the VLAN currently displayed.
Creation Time
The value of sysUpTime (System Up Time) when this VLAN was
created.
Status
Shows how this VLAN was added to the switch:
Dynamic GVRP: Automatically learned via GVRP.
Permanent: Added as a static entry.
Unit
Stack unit.
Current Egress Ports
Shows the ports which have been added to the displayed VLAN
group, where "1" indicates that a port is a member and "O" that it is
not.
Current Untagged Ports
If a port has been added to the displayed VLAN (see Current Egress
Ports), its entry in this field will be "1" if the port is untagged or "O"
if tagged.
[Show]
Displays the members for the VLAN indicated by the “Sorted by
VID" field.
[More]
Displays any subsequent VLANs if configured.
60
AT-S29 Management Software User’s Guide
802.1Q VLAN Static Table Information
Use this screen to create a new VLAN or modify the settings for an
existing VLAN. You can add/delete port members for a VLAN from any
unit in the stack, or prevent a port from being automatically added to a
VLAN via the GVRP protocol. (Also, note that all ports can only belong to
one untagged VLAN. This is set to VLAN 1 by default, but can be changed
via the 802. 1 Q VLAN Port Configuration screen.)
802.1Q VLAN Static Table Information
======================================
VID
VLAN Name
Status
-------------------------------------Unit
Egress Ports
1.
2.
3.
4.
111111111111
----------------------------------
Forbidden Egress Ports
111111111111
----------------------------------
1---000000000000
----------------------------------------------
000000000000
----------------------------------
0------------
VID : 0
[Show]
[More]
[New]
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrows keys to move, other keys to make changes.
<Enter> to select.
Parameter
Description
VID
The ID for the VLAN currently displayed.
Range: 1-2048
VLAN Name
A user-specified symbolic name for this VLAN.
String length: Up to 8 alphanumeric characters.
Status
Sets the current editing status for this VLAN as:
Not in Service, Destroy, or Active.
Unit
Stack unit.
Egress Ports
Set the entry for any port in this field to "1" to add it to the displayed VLAN,
or "O” to remove it from the VLAN.
Forbidden Egress
Ports
Prevents a port from being automatically added to this VLAN via GVRP.
[Show]
Displays settings for the specified VLAN.
[More]
Displays consecutively numbered VLANS.
[New]
Sets up the screen for configuring a new VLAN.
61
Using the System Configuration Program
Using the System Configuration Program
For example, the following screen displays settings for VLAN 2, which
includes tagged ports 1-6, and forbidden port 12. (Note that the dashed
lines show that there are no switch units in this system other than Unit
1.)
802.1Q VLAN Static Table Information
======================================
VID
VLAN Name
Row Status
-------------------------------------2
RD
Active
Unit
Egress Ports
1.
2.
3.
4.
111111000000
----------------------------------
Forbidden Egress Ports
000000000000
----------------------------------
0---000000000001
----------------------------------------------
000000000000
----------------------------------
0------------
VID : 2
[Show]
[More]
[New]
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrows keys to move, other keys to make changes.
<Enter> to select.
62
AT-S29 Management Software User’s Guide
802.1Q VLAN Port Configuration
Use this screen to configure port-specific settings for IEEE 802.lQ VLAN
features.
802.lQ VLAN Port Configuration : Unit 1 Port 1 - 12
=================================================
Port PVID
Acceptable Ingress
Frame Type Filtering
GVRP
Status
GVRP Failed
GVRP Last
Registrations PDU Origin
-------------------------------------------------------------------1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
101
111
121
All
All
All
All
All
All
All
All
All
All
All
All
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
DISABLED
DISABLED
DISABLED
DISABLED
DISABLED
DISABLED
DISABLED
DISABLED
DISABLED
DISABLED
DISABLED
DTSABLED
000-00-00-00-00-00
000-00-00-00-00-00
000-00-00-00-00-00
000-00-00-00-00-00
000-00-00-00-00-00
000-00-00-00-00-00
000-00-00-00-00-00
000-00-00-00-00-00
000-00-00-00-00-00
000-00-00-00-00-00
000-00-00-00-00-00
000-00-00-00-00-00
<APPLY> <OK> <CANCEL> <PREV UNIT> <NEXT UNIT> <PREV PAGE> <NEXT PAGE>
Use <TAB> or arrow keys to move, <Space> to scroll options
Parameter
Description
PVID
The VLAN ID assigned to untagged frames received on this port. Use the
PVID to assign ports to the same untagged VLAN.
Acceptable Frame
Type1 2
This switch accepts “All" frame types, including VLAN tagged or VLAN
untagged frames. Note that all VLAN untagged frames received on this
port are assigned to the PVID for this port.
Ingress Filtering1
If set to "True," incoming frames for VLANs which do not include this port
in their member set will be discarded at the inbound port.
GVRP Status
Enables or disables GVRP for this port. When disabled, any GVRP packets
received on this port will be discarded and no GVRP registrations will be
propagated from other ports.
Note that GVRP must be enabled for the switch before this setting can take
effect. (See Device Control Menu / Extended Bridge Configuration.)
GVRP Failed
Registrations
The total number of failed GVRP registrations, for any reason, on this port.
GVRP Last PDU
Origin
The Source MAC Address of the last GVRP message received on this port.
1. This control does not affect VLAN independent BPDU frames, such as GVRP or STP. However, it does affect VLAN dependent BPDU frames,
such as GMRP.
2. Not implemented in this firmware release.
63
Using the System Configuration Program
Monitoring the Switch
The Network Monitor Menu provides access to port statistics, RMON
statistics, IP multicast addresses, and the static (unicast) address table.
Each of the screens provided by these menus is described in the
following sections.
Network Monitor Menu
====================
Port Statistics ...
RMON Statistics ...
Unicast Address Table ...
Multicast Address Registration Table ...
IP Multicast Registration Table ...
Static Unicast Address Table Configuration ...
Static Multicast Address Table Configuration ...
<OK>
Use <TAB> or arrows keys to move. <Enter> to select.
Parameter
Description
Port Statistics
Displays statistics on network traffic passing through
the selected port.
RMON Statistics
Displays detailed statistical information for the selected
port such as packet type and frame size counters.
Unicast Address
Table
Provides full listing of all unicast addresses stored in the
switch, as well as sort, search and clear functions.
Multicast Address Displays the ports that belong to each GMRP Muticast
Registration Table1 group.
IP Multicast
Registration Table
Displays the ports that belong to each IP Muticast
group.
Static Unicast
Address Table
Configuration
Allows you to display or configure static unicast
addresses.
Static Multicast
Address Table
Configuration1
Allows you to display or configure static GMRP
multicast addresses.
1. Not implemented in this firmware release.
64
AT-S29 Management Software User’s Guide
Displaying Port
Statistics
Use the Port Statistics menu to display key statistics for each port. Overall
statistics on the traffic passing through each port are displayed. This
information can be used to identify potential problems with the switch
(such as a faulty port or unusually heavy loading).
Select the required stack unit, and port or module. The statistics
displayed are indicated in the following figure and table.
Port Statistics : Unit 1 Port I
=============================
EtherLike Counter:
Alignment Errors
:0
FCS Errors
:0
Single Collision Frames :0
Multiple Collision Frames:O
SQE Test Errors
:0
Deferred Transmissions
:0
[Refresh Counters]
Late Collisions
Excessive Collisions
Internal MAC Transmit Errors
Carrier Sense Errors
Frames Too Long
Internal MAC Receive Errors
:0
:0
:O
:0
:0
:0
[Reset Counters]
<OK> <PREV UNIT> <NEXT UNIT> <PREV PORT> <NEXT PORT>
Use <TAB> or arrow keys to move. <Enter> to select.
Parameter
Description
Alignment Errors
For 10 Mbps ports, this counter records alignment errors (missynchronized data packets). For 100Base-TX ports, this counter
records the sum of alignment errors and code errors (frames received
with rxerror signal).
FCS Errors
The number of frames received that are an integral number of octets
in length but do not pass the FCS check.
Single Collision Frames1
The number of successfully transmitted frames for which
transmission is inhibited by exactly one collision.
Multiple Collision
Frames1
A count of successfully transmitted frames for which transmission is
inhibited by more that one collision.
SQE Test Errors1
A count of times that the SQE TEST ERROR message is generated by
the PLS sublayer.
Deferred Transmissions1 A count of frames for which the first transmission attempt on a
particular interface is delayed because the medium was busy.
65
Using the System Configuration Program
Parameter
Description
Late Collisions
The number of times that a collision is detected later than 512 bittimes into the transmission of a packet.
Excessive Collisions1
The number of frames for which transmission failed due to excessive
collisions.
Internal Mac Transmit
Errors1
The number of frames for which transmission failed due to an
internal MAC sublayer transmit error.
Carder Sense Errors1
The number of times that the carrier sense condition was lost or
never asserted when attempting to transmit a frame.
Frames Too Long
The number of frames received that exceed the maximum permitted
frame size.
Internal Mac Receive
Errors1
The number of frames for which reception failed due to an internal
MAC sublayer receive error.
1. The reported values will always be zero because these statistics are not supported by the internal chip set.
Displaying
RMON Statistics
Use the RMON Statistics screen to display key statistics for each port or
media module from RMON group 1. (RMON groups 2, 3 and 9 can only
be accessed using SNMP management software.) The following screen
displays overall statistics on traffic passing through each port. RMON
statistics provides access to a broad range of statistics, including a total
count of different frame types passing through each port. Values
displayed have been accumulated since the last system reboot.
RMON Statistics: Unit I Port 1
================
Drop Events
:0
Received Bytes
:199299
Received Frames
:15746
Broadcast Frames
:3249
Multicast Fr=es
:0
CRC/Alignment Errors :0
Undersize Frames
:0
Oversize Frames
:0
Fragments
:0
(Refresh Statistics]
<OK>
66
Jabbers
Collisions
64 Byte Frames
65-127 Byte Frames
128-255 Byte Frames
256-511 Byte Frames
512-1023 Byte Frames
1024_1518 Byte Frames
:0
:0
:37837
:674356
:45430
:20447
:3740
:35696
[Reset Counters]
<PREV UNIT>
<NFXT UNIT>
<PREV PORT>
<NEXT PORT>
Use <TAB> or arrow keys to move. <Enter> to select.
AT-S29 Management Software User’s Guide
Parameter
Description
Drop Events
The total number of events in which packets were dropped by the probe
due to lack of resources.
Received Bytes
Total number of bytes of data received on the network. This statistic can be
used as a reasonable indication of Ethernet utilization.
Received Frames
The total number of frames (bad, broadcast and multicast) received.
Broadcast Frames
The total number of good frames received that were directed to the
broadcast address. Note that this does not include multicast packets.
Multicast Frames
The total number of good frames received that were directed to this
multicast address.
CRC/Alignment
Errors
For 1OMbs ports, the counter records CRC/alignment errors (FCS or
alignment errors). For 10OMbs ports, the counter records the sum of CRC/
alignment errors and code errors (frame received with rxerror signal).
Undersize Frames
The total number of frames received that were less than 64 octets long
(excluding framing bits, but including FCS octets) and were otherwise well
formed.
Oversize Frames
The total number of frames received that were longer than 1518 octets
(excluding framing bits, but including FCS octets) and were otherwise well
formed.
Fragments
The total number of frames received that were less than 64 octets in length
(excluding framing bits, but including FCS octets) and had either an FCS or
alignment error.
Jabbers
The total number of frames received that were longer than 1518 octets
(excluding framing bits, but including FCS octets), and had either an FCS or
alignment error.
Collisions
The best estimate of the total number of collisions on this Ethernet
segment.
64 Byte Frames
The total number of frames (including bad packets) received and
transmitted that were 64 octets in length (excluding framing bits but
including FCS octets),
65-127 Byte
Frames
The total number of frames (including bad packets) received and
transmitted that were between 65 and 127 octets in length inclusive
(excluding framing bits but including FCS octets).
128-255 Byte
Frames
The total number of packets (including bad packets) received and
transmitted that were between 128 and 255 octets in length inclusive
(excluding framing bits but including FCS octets).
1024-1518 Byte
Frames
The total number of packets (including bad packets) received and
transmitted that were between 1024 and 1518 octets in length inclusive
(excluding framing bits but including FCS octets).
67
Using the System Configuration Program
Displaying the
Unicast Address
Table
The Address Table contains the MAC addresses and VLAN identifier
associated with each port (that is, the source port associated with the
address and VLAN), sorted by MAC address or VLAN ID. You can search
for a specific address, clear the entire address table, or information
associated with a specific address, or set the aging time for deleting
inactive entries. The information displayed in the Address Table is
indicated in the following figure and table.
Unicast Address Table
===================
Aging Time : 300 Dynamic Counts : 0 Static Counts : 0
MAC
VID Unit Port Status
MAC
VID Unit PortStatus
---------------------------------------------------------------------------00-00-00-F7-18-78
00-00-65-02-85-73
00-00-C0-01-2B-5C
00-00-E2-01-40-C3
00-00-E2-22-0F-FE
00-00-E8-22-10-11
00-00-E8-22-38-98
00-00-E8-10-69-CD
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Sorted by : MAC + VID
VLAN ID : 1
MAC
: 00-00-00-00-00-00
[Show]
[More]
D
D
D
D
D
D
D
D
00-00-E8-F7-18-78
00-00-E8-02-85-73
00-00-E8-02-85-73
00-00-E8-02-85-73
00-00-E8-02-85-73
00-00-E8-02-85-73
00-00-E8-02-85-73
00-00-E8-02-85-73
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Cleared by : MAC + VID
VLAN ID
: 1
MAC
: 00-00-00-00-00-00
[Clear]
[Clear All]
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move, other keys to make changes.
<Space> to scroll options. <Enter> to select.
Parameter
Description
Address Table
Time-out period in seconds for aging out.
Aging Time
Dynamically learned forwarding information. Range: 10 - 412 seconds
Default: 300 secs.
Dynamic Counts
Number of dynamically learned addresses.
Static Counts
Number of statically configured addresses.
MAC
The MAC address of a node.
VID
The VLAN(s) associated with this address or port.
Unit
Switch unit in the stack (1~4).
Port
The port whose address table includes this MAC address.
68
D
D
D
D
D
D
D
D
AT-S29 Management Software User’s Guide
Parameter
Description
Status
Indicates address status as:
D: dynamically learned, or
P: fixed permanent.y by SNMP network management software.
[Show]
Displays the address table based on specified VLAN ID, and sorted by
primary key MAC or VID.
[Clear]
Clears the specified MAC address.
[Clear All]
Clears all MAC addresses from the table.
69
Using the System Configuration Program
Displaying the IP
Multicast
Registration
Table
Use the IP Multicast Registration Table to display all the multicast groups
active on this switch, including multicast IP addresses and the
corresponding VLAN ID.
IP Multicast Registration Table
==============================
VID
Multicast IP Unit
Dynamic Port Lists (Learned by IGMP Only)
---------------------------------------------------------------------------1
225.1.1.l
1.
2.
3.
4.
000000001100
000000001100
000000001100
000000001100
110000000000
110000000000
110000000000
110000000000
0--0--0--0---
5
225.1.1.2
1.
2.
3.
4.
000000001100
000000001100
000000001100
000000001100
110000000000
110000000000
110000000000
110000000000
0--0--0--0---
Sorted by
: VID + Multicast IP
VID
: 1
Multicast IP :
[Show]
[More]
<OK>
Use <TAB> or arrow keys to move, other keys to make changes.
<Enter> to select.
70
Parameter
Description
VID
VLAN ID assigned to this multicast group.
Multicast IP
IP address for specific multicast services.
Unit
Stack unit.
Dynamic Port Lists
The switch ports dynamically registered for the
indicated multicast service via IGMP.
[Show]
Displays the address table sorted on VID and then
Multicast IP.
[More]
Scrolls through the entries in the address table.
AT-S29 Management Software User’s Guide
Configuring
Static Unicast
Addresses
Use the Static Unicast Address Table Configuration screen to manually
configure host MAC addresses in the unicast table. You can use this
screen to associate a MAC address with a specific VLAN ID and switch
port as shown below.
Static Unicast Address Table Configuration
===========================================
VID
MAC Address
Unit
Port
Status
--------------------------------------------------------------1
00-30-84-18-43-12 1
1
Permanent
Sorted by : VID + MAC
VID : 1
MAC : 00-00-00-00-00-00
[Show)
[More]
VID : 1
MAC : 00-00-00-00-00-00
Unit : 1
Port : 1
Status : Permanent
[Set]
<OK>
Use <TAB> or arrow keys to move, other keys to make changes.
<Space> to scroll options.
Parameter
Description
VID
The VLAN group this port is assigned to.
MAC Address
The MAC address of a host device attached to this
switch.
Unit
The switch unit the host device is attached to.
Port
The port the host device is attached to.
Status
The status for an entry can be set to:
Permanent: This entry is currently in use and will
remain so after the next reset of the switch.
DeleteOnReset: This entry is currently in use and
will remain so until the next reset.
Invalid: Removes the corresponding entry.
DeleteOnTimeOut: This entry is currently in use
and will remain so until it is aged out.
Other: This entry is currently in use but the
conditions under which it will remain so differ from
the preceding values.
71
Using the System Configuration Program
Parameter
Description
[Show]
Displays the static address table sorted on VID as the
primary key and MAC address as secondary key.
[More]
Scrolls through entries in the static address table.
[Set]
Adds the specified entry to the static address table,
such as shown in the following example:
VID : 1
Unit : 1
Status :
72
MAC : 00-30-84-18-34-22
Port : 1
Permanent
AT-S29 Management Software User’s Guide
Resetting the System
Use the Restart command under the Main Menu to reset the
management agent. The reset screen includes an option to return all
configuration parameters to their factory defaults.
System Restart Menu
====================
Restart Option :
POST
Reload Factory Defaults
Keep IP Setting
Keep User Authentication
:
:
:
:
YES
YES
YES
YES
[Restart]
<APPLY>
<OK>
<CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
Parameter
Description
POST
Runs the Power-On Self-Test
Reload Factory
Defaults
Reloads the factory defaults
Keep IP Setting
Retains the settings defined in the IP
Configuration menu.
Keep User
Authentication
Retains the user names and passwords defined in
the Console Login Configuration menu.
73
Using the System Configuration Program
Logging Off the System
Use the Exit command under the Main Menu to exit the configuration
program and terminate communications with the switch for the current
session.
74
Chapter 3
Web-based Management
Web-based Configuration and Monitoring
The Network Management Module provides an embedded HTTP Web
agent in addition to the menu-driven system configuration program.
This agent can be accessed by any computer on the network using a
standard Web browser (Internet Explorer 4.0 or above, or Netscape
Navigator 4.0 or above).
Note
If you experience a screen refresh problem with Internet Explorer 5.0,
you can use the Back and Forward buttons in the Tool bar to manually
refresh the window, or you can use IE 4.0 or Navigator 4.0.
Using the Web browser management interface you can configure a
switch stack, view statistics, and monitor network activity. The Web
interface also provides access to a range of SNMP management
functions with its MIB and RMON browser utilities.
Prior to accessing the Network Management Module from a Web
browser, be sure you have first performed the following tasks:
1. Configure the switch with a valid IP address, subnet mask, and default
gateway using an out-of-band serial connection or BootP protocol.
2. Set user names and passwords using an out-of-band serial
connection. Access to the Web Agent is controlled by the same
Administrator user names and passwords as the on-board
configuration program.
Note
If the PC is directly connected to the AT-8324SX switch, you must turn
off the network proxy in the Web browser. For instructions on how to
turn off the network proxy, refer to your Web browser
documentation.
75
Web-based Management
Navigating the Web Browser Interface
To access the Web-browser interface you must first enter a user name
and password. The default user names are "admin" and "guest," with no
password. The administrator has Read/Write access to all configuration
parameters and statistics, and the guest has Read Only access to the
management program.
Home Page
When your Web browser connects with the Network Management
Module’s Web agent, the home page is displayed. The home page
displays the Main Menu on the left-hand side of the screen and the
System Information on the right-hand side. The Main Menu links are
used to navigate to other menus and display configuration parameters
and statistical data.
If this is your first time to log into the configuration program, you should
define a new administrator password, record it and put it in a safe place.
From the Main Menu, select Security Configuration and enter a new
password for the administrator. Note that passwords can consist of up to
14 alphanumeric characters and are not case sensitive.
Note
Based on the default configuration, a user is allowed three attempts
to enter the correct password; on the third failed attempt the current
connection is terminated.
76
AT-S29 Management Software User’s Guide
Configurable parameters have a dialog box or drop-down list. Once a
configuration change has been made on a page, be sure to click on the
“Apply” button at the bottom of the page to confirm the new setting.
Alternatively, you can click on “Revert” to clear any changes prior to
pressing “Apply.”
Panel Display
The Web Agent displays an image of the switch’s ports and expansion
modules, showing port activity, speed, or duplex mode, depending on
the specified mode. Note that clicking on the image of a port or module
will display statistics for the selected item.
Main Menu
Using the on-board Web agent, you can define system parameters,
manage and control the switch, the connected stack and all its ports, or
monitor network conditions. The following table briefly describes the
selections available from this program.
Menu
Description
System
Provides basic system description, including contact
information.
Switch
Shows hardware/firmware version numbers, power
status, and expansion modules in use.
IP
Includes boot state, IP address, and Telnet session
count.
SNMP
Configures communities and trap managers; and
activates traps.
Security
Sets passwords for system access.
Upgrade
Downloads new version of firmware to update your
system.
Address Table
Provides full listing of unicast addresses, sorted by
address or VLAN.
STA
Enables Spanning Tree Algorithm; also sets
parameters for switch priority, hello time, maximum
message age, and forward delay; as well as port
priority and path cost.
77
Web-based Management
78
Menu
Description
Bridge
Extension
Displays/configures extended bridge capabilities
provided by this switch, including support for traffic
classes, GMRP multicast filtering, and VLAN
extensions.
Priority
Configures default port priorities and queue
assignments.
VLAN
Configures VLAN group members, automatic
registration with GVRP, and other port-specific VLAN
settings.
IGMP
Configures IGMP multicast filtering.
Port
Enables any port, sets communication mode to autonegotiation, full duplex or half duplex, and enables/
disables flow control.
Mirror
Sets the source and target ports for mirroring.
Trunk
Specifies ports to group into aggregate trunks.
Statistics
Displays statistics on network traffic passing through
the selected port.
AT-S29 Management Software User’s Guide
System Information
Use the System Information screen to display descriptive information
about the switch, or for quick system identification as shown in the
following figure and table.
System Name
CentreCOM AT-8324SX
IP Address
1.0.1.0.1
Object ID
1.3.6.1.4.207.1.4.42
Location
Development
Contact
Leslie extension 613
System Up Time
41 d 2 h 11 min 48 s
Menu
Description
System Name1
Name assigned to the switch system
IP Address2
IP address of the agent you are managing. The
agent module supports SNMP over UDP/IP
transport protocol. In this environment, all
systems on the Internet, such as network
interconnection devices and any PC accessing
the agent module are assigned an IP address.
Valid IP addresses consist of four numbers, of 0 to
255, and separated by periods. Anything outside
of this format will not be accepted by the
configuration program.
Object ID
MIB II object identifier for switch’s network
management subsystem (AT-8324SX:
1.3.6.1.4.207.1.4.42).
Location1
Specifies the area or location where the system
resides.
Contact1
Contact person for the system.
System Uptime
Length of time the current management agent
has been running. (Note that the first value is
1/100 seconds.)
1. Maximum string length is 45 characters.
2. The default value is 0.0.0.0.
79
Web-based Management
Switch Information
Use the Switch Information screen to display hardware/firmware version
numbers for the main board and agent modules, as well as the power
status and modules plugged into the system.
Main Board
00-30-84-9A-3B-80
Number of Ports
24
Hardware Version
V3.0
Firmware Version
V1.11
Internal Power Status
Active
Redundant Power Status
Inactive
Parameter
Description
Serial Number
Serial number of the main board.
Number of Ports
Number of ports in this unit.
Hardware Version
Hardware version of the main board.
Firmware version
System ROM version.
Internal Power Status
Power status for the switch.
Redundant Power Status
Redundant power status for the switch.
Management
Expansion Slot
80
Serial Number
Hardware Version:
V2.0
POST ROM Version:
V1.10
Firmware Version:
V1.12
Role
Master
Parameter
Description
Hardware Version
Hardware version of the Agent Module
POST ROM Version
Version number of the Agent Module’s
Power-on Self-test.
Firmware Version
Agent Module’s firmware version
Role
Shows if this module is Master or Slave.
AT-S29 Management Software User’s Guide
Expansion Slot
Expansion Slot 1:
1-Port 1000Base-SX-SC
Expansion Slot 2:
4GB Stack Module
Parameter
Description
Expansion Slot 1
Shows module type if inserted (100Base-FX,
1000Base-SX, or 1000Base-LX).
Expansion Slot 2
Shows module type if inserted (100Base-FX,
1000Base-SX, 1000Base-LX or Stack).
81
Web-based Management
IP Configuration
Use the IP Configuration screen to set the bootup option, configure the
IP addresses for the agent module, or set the number or concurrent
Telnet sessions allowed. The screen shown below is described in the
following table.
IP State:
User-Configured
IP Address:
10.1.0.1
Subnet Mask:
255.255.255.0
Gateway IP Address:
10.1.0.254
MAC Address:
00-30-84-E8-93-AE
Number of Telnet sessions (1-4):
4
Parameter
Default
Description
IP State
USER-CONFIG
Specifies whether IP functionality is enabled via manual
configuration, or set by Boot Protocol (BootP). Options include:
❑ USER-CONFIG - IP functionality is enabled based on the
default or user specified IP Configuration. (This is the
default setting.).
❑ BootP Get IP - IP is enabled but will not function until a
BootP reply has been received. BootP requests will be
periodically broadcast by the switch in an effort to learn
its IP address. (BootP values include the IP address, default
gateway, subnet mask, TFTP boot file name, and TFTP
server IP.)
IP Address
10.1.0.1
IP address of the agent you are managing. The Agent Module
supports SNMP over UDP/IP transport protocol. In this
environment, all systems on the Internet, such as network
interconnection devices and any PC accessing the Agent
Module are assigned an IP address. Valid IP addresses consist of
four numbers, of 0 to 255, and separated by periods. Anything
outside of this format will not be accepted by the configuration
program.
Subnet
Mask
255.255.255.0
Subnet mask of the agent you have selected. This mask
identifies the host address bits used for routing to specific
subnets.
Gateway IP
Address
0.0.0.0
Gateway used to pass trap messages from the switch’s agent to
the management station. Note that the gateway must be
defined if the management station is located in a different IP
segment.
82
AT-S29 Management Software User’s Guide
Parameter
Default
Description
MAC
Address
-
Physical address of the Agent Module
Number of
Telnet
Sessions
4
Sets the number of concurrent Telnet sessions allowed to
access the Agent Module.
SNMP Configuration
Use the SNMP Configuration screen to display and modify parameters
for the Simple Network Management Protocol (SNMP). The switch
includes an on-board SNMP agent which monitors the status of its
hardware, as well as the traffic passing through its ports. A computer
attached to the network, called a Network Management Station (NMS),
can be used to access this information. Access rights to the on-board
agent are controlled by community strings. To communicate with the
switch, the NMS must first submit a valid community string for
authentication. The options for configuring community strings and
related trap functions are described in the sections.
SNMP
Community
The following figure and table describe how to configure the
community strings authorized for trap management access. Up to 5
community names may be entered.
SNMP Community Capability: 5
Current:
public RO
private RW
netman RW
New:
<<Add
Community String:
Remove
Access Mode:
Read-Only
Parameter
Description
Community String
A community entry authorized for trap
management access. (The maximum string
length is 19 characters).
Access Mode
Management access is restricted to Read Only or
Read/Write.
Add/Remove
Add/remove strings from the active list
83
Web-based Management
The default community strings are listed here.
Trap Managers
Purpose
Community String
Privileges
General access
public
Read Only
Network
administrators
private
Read/Write
Network
management
netman
Read/Write
The following figure and table describe how to specify management
stations that will receive authentication failure messages or other trap
messages from the switch. Up to 5 trap managers may be entered.
Current:
(none)
New:
<<Add
Trap Manager IP address:
Remove
Trap Manager Community String:
Enable Authentication Trap Generation:
84
Parameter
Description
Trap Manager IP Address
IP address of the trap manager.
Trap Manager
A community specified in the SNMP
Communities table.
Add/Remove
Add/remove strings from the active list.
Enable Authentication
Traps
Issue a trap message to specified IP trap
managers whenever authentication of an
SNMP request fails. (The default is
enabled.)
AT-S29 Management Software User’s Guide
Security Configuration
Use the Security Configuration screen to restrict management access
based on specified user names and passwords. The Administrator has
write access for parameters governing the SNMP agent. You should
therefore assign a user name and password to the Administrator as soon
as possible, and store it in a safe place. (If for some reason your password
is lost, or you can not gain access to the system’s configuration program,
contact Allied Telesyn for assistance.) The parameters shown on this
screen are indicated in the following figure and table.
Change Password
Old Password
New Password
Confirm Password
This password is for the system Administrator access, with access
privilege of Read/Write for all screens. Passwords can consist of up to 11
alphanumeric characters and are not case sensitive. (Default name:
admin; default password: null)
85
Web-based Management
Firmware Upgrade Options
You can upgrade system firmware via a Web browser, a TFTP server, or a
direct connection to the console port.
Web Upload
Management
Use the Web Upload Management menu to load software updates into
the switch. The upload file should be an AT-8324SX compressed binary
file from Allied Telesyn; otherwise the agent will not accept it. The
success of the upload operation depends on the quality of the network
connection. After downloading the new software, the agent will
automatically restart itself. Parameters shown on this screen are
indicated in the following figure and table.
Upload Mode
Permanent
Browse
File Name
Start Web Upload
86
Parameter
Description
Upload Mode
Uploads to permanent flash ROM.
File Name
The AT-8324SX compressed binary file to upload.
Use the browse button to locate the file on your
local network.
Start Web Upload
Uploads the specified file.
AT-S29 Management Software User’s Guide
TFTP Download
Management
Use the TFTP Download Management menu to load software updates
into the switch. The download file should be an AT-8324SX compressed
binary file from Allied Telesyn; otherwise the agent will not accept it. The
success of the download operation depends on the accessibility of the
TFTP server and the quality of the network connection. After
downloading the new software, the agent will automatically restart
itself. Parameters shown on this screen are indicated in the following
figure and table.
Server IP Address
0.0.0.0
Download Mode
Permanent
File Name
Start TFTP Upload
Parameter
Description
Server IP Address
IP address of a TFTP server.
Download Mode
The system downloads to permanent flash
ROM.
File Name
The AT-8324SX compressed binary file to
download.
Start TFTP
Download
Issues a request to TFTP server to download the
specified file.
87
Web-based Management
Address Table Configuration
The Address Table contains the unicast MAC addresses and VLAN
identifier associated with each port (that is, the source port associated
with the address and VLAN). You can also clear the entire address table,
or information associated with a specific port, address, or VLAN
identifier; or set the aging time for deleting inactive entries. The
information displayed in the Address Table is indicated in the following
figure and table.
Aging Time (10-415):
300
Dynamic Address Counts:
115
Static Address Counts:
0
seconds
Address Table Sort Key: Address
000024-B32883, VLAN 1, Unit 1, Port 7, Dynamic
0000E2-12F9F8, VLAN 1, Unit 1, Port 7, Dynamic
0000E2-16C582, VLAN 1, Unit 1, Port 7, Dynamic
0000E2-20C3D5, VLAN 1, Unit 1, Port 7, Dynamic
0000E2-2174D0, VLAN 1, Unit 1, Port 7, Dynamic
0000E2-000678, VLAN 1, Unit 1, Port 7, Dynamic
0000E8-008907, VLAN 1, Unit 1, Port 7, Dynamic
0000E8-B235D5, VLAN 1, Unit 1, Port 7, Dynamic
0000E8-1012D5, VLAN 1, Unit 1, Port 7, Dynamic
0000E8-B21002, VLAN 1, Unit 1, Port 7, Dynamic
0000E8-24C346, VLAN 1, Unit 1, Port 7, Dynamic
88
<<Add
MAC
Address
Remove
VLAN
(1-2048)
Clear Table
Unit
1
Port
1
Parameter
Description
Aging Time
Time-out period in seconds for aging out dynamically learned
forwarding information. The range is 10 - 415 seconds; and the
default is 300 seconds.
Dynamic Address Count
The number of dynamically learned addresses.
Static Address Count
The number of statistically configured addresses
Address Table Sort Key
The system displays the MAC address of each node, the switch unit
and the port whose address table includes this MAC address, the
associated VLAN(s), and the address status (i.e., dynamic or static)
Address Table
All entries, sorted by address or VLAN ID.
New Static Address
Use these fields to add or remove a static entry to the address
table. Indicate the address, stack unit, port and VLAN group when
adding a new entry.
Add/Remove
Adds/removes selected address.
Clear Table
Removes all addresses from the address table.
AT-S29 Management Software User’s Guide
STA (Spanning Tree Algorithm)
The Spanning Tree Algorithm 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 (that is,
STA compliant switch, bridge or router) in your network to ensure that
only one route exists between any two stations on the network. For a
more detailed description of how to use this algorithm, refer to Chapter
4.
Spanning Tree
Information
The Spanning Tree Information screen displays a summary of the STA
information for the overall bridge or for a specific port or module. To
make any changes to the parameters for the Spanning Tree, use the
Spanning Tree Configuration menu. Also note that this screen cannot be
accessed unless you have already enabled the Spanning Tree Algorithm
via the Spanning Tree Configuration menu.
Spanning Tree
The parameters shown in the following figure and table describe the
current bridge STA Information.
Spanning Tree State Enabled
Designated Root
0.003084FFFF33
Bridge ID
32768.003084119A3B Root Port
7
Max Age
20 Seconds
Root Path Cost
19
Hello Time
2 Seconds
Configuration Changes 22
Forward Delay
15 Seconds
Last Topology Change 1 d 2 h 3 min 4 s
Parameter
Description
Spanning Tree
State
Shows if switch is enabled to participate in an
STA compliant network.
Bridge ID
A unique identifier for this bridge, consisting of
bridge priority plus MAC address (where the
address is normally taken from Port 1).
Max Age
The maximum time (in seconds) a device can
wait without receiving a configuration message
before attempting to reconfigure.
Hello Time
The time interval (in seconds) at which the root
device transmits a configuration message.
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Web-based Management
Parameter
Description
Forward Delay
The maximum time (in seconds) the root device
will wait before changing states (i.e., listening to
learning to forwarding).
Root
The priority and MAC address of the device in
the spanning tree that this switch has accepted
as the root device.
Root Port
The number of the port on this switch that is
closest to the root. This switch communicates
with the root device through this port. If there is
no root port, then this switch has been
accepted as the root device of the spanning
tree network.
Root Path Cost
The path cost from the root port on this switch
to the root device.
Configuration
Changes
The number of times the spanning tree has
been reconfigured.
Last Topology
Change
The time since the spanning tree was last
reconfigured.
STA Port Configuration
The parameters shown in the following figure and table are for port or
module STA Information (Port 1-12, Port 13-24, Expansion Slot 1 or
Expansion Slot 2).
Port Port Status Forward Transitions Designated Cost
90
Designated Bridge
Designated Port
1
Disabled
0
19
32768.0030849A3B80
128.1
2
Disabled
0
19
32768.0030849A3B80
128.2
3
Disabled
0
19
32768.0030849A3B80
128.3
4
Disabled
0
19
32768.0030849A3B80
128.4
5
Disabled
0
19
32768.0030849A3B80
128.5
AT-S29 Management Software User’s Guide
Parameter
Description
Port Status
Displays the current state of this port within the
spanning tree:
❑ Disabled: Port has been disabled by the user or has failed
diagnostics.
❑ Blocked: Port receives STA configuration messages, but does not
forward packets.
❑ Listening: Port will leave blocking state due to topology change,
starts transmitting configuration messages, but does not yet forward
packets.
❑ Learning: Has transmitted configuration messages for an interval set
by the Forward Delay parameter without receiving contradictory
information. Port address table is cleared, and the port begins
learning addresses.
Forwarding: The port forwards packets, and continues learning addresses.
The rules defining port status are:
❑ A port on a network segment with no other STA compliant bridging
device is always forwarding.
❑ If two ports of a switch are connected to the same segment and there
is no other STA device attached to this segment, the port with the
smaller ID forwards packets and the other is blocked.
❑ All ports are blocked when the switch is booted, then some of them
change state to listening, to learning, and then to forwarding.
Forward
Transitions
The number of times the port has changed status to forwarding state.
Designated Cost
The cost for a packet to travel from this port to the root in the current
spanning tree configuration. The slower the media, the higher the cost.
Designated Bridge
The priority and MAC address of the device through which this port must
communicate to reach the root of the spanning tree.
Designated Port
The port on the designated bridging device through which this switch
must communicate with the root of the spanning tree.
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Web-based Management
Spanning Tree
Configuration
The following figures and tables describe Bridge STA configuration.
Switch
Usage:
Disabled
Priority:
32768
Parameter
Default
Description
Usage
Enabled
Enable this parameter to participate in an STA
compliant network.
Priority
32,768
Device priority is used in selecting the root
device, root port, and designated port. The
device with the highest priority becomes the
STA root device. However, if all devices have
the same priority, the device with the lowest
MAC address will then become the root
device.
Enter a value from 0 - 65535.
Remember that the lower the numeric value,
the higher the priority.
When the Switch Becomes Root
92
Hello Time:
2
seconds
Maximum Age:
20
seconds
Forward Delay:
15
seconds
AT-S29 Management Software User’s Guide
Parameter
Default
Description
Hello Time
2
The time interval (in seconds) at which the
root device transmits a configuration
message.
The minimum value is 1.
The maximum value is the lower of 10 or
[(Max. Message Age / 2) -1].
Max
(Message)
Age
20
The maximum time (in seconds) a device
can wait without receiving a configuration
message before attempting to reconfigure.
All device ports (except for designated
ports) should receive configuration
messages at regular intervals. Any port that
ages out STA information (provided in the
last configuration message) becomes the
designated port for the attached LAN. If it is
a root port, a new root port is selected from
among the device ports attached to the
network.
The minimum value is the higher of 6 or [2 x
(Hello Time + 1)].
The maximum value is the lower of 40 or [2 x
(Forward Delay - 1)].
Forward
Delay
15
The maximum time (in seconds) the root
device will wait before changing states (i.e.,
listening to learning to forwarding). This
delay is required because every device must
receive information about topology
changes before it starts to forward frames. In
addition, each port needs time to listen for
conflicting information that would make it
return to a blocking state; otherwise,
temporary data loops might result.
The maximum value is 30. The minimum
value is the higher of 4 or [(Max. Message
Age / 2) + 1].
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Web-based Management
STA Port
Configuration
The following figure and table describe STA configuration for ports or
modules. (Note that the Spanning Tree Configuration screen for the
expansion slots also indicates module type.)
Port Priority
94
Path Cost
1
128
19
2
128
19
3
128
19
4
128
19
5
128
19
Parameter
Default
Description
Priority
128
Defines the priority for the use of a port in
the STA algorithm. If the path cost for all
ports on a switch are the same, the port
with the highest priority (i.e., lowest value)
will be configured as an active link in the
spanning tree. Where more than one port is
assigned the highest priority, the port with
lowest numeric identifier will be enabled.
The range is 0 - 255.
(Path) Cost
100/19/4
This parameter is used by the STA
algorithm to determine the best path
between devices. Therefore, lower values
should be assigned to
ports attached to faster media, and higher
values assigned to ports with slower media.
The default and recommended range is:
❑ Standard Ethernet: 100 (50~600)
❑ Fast Ethernet: 19 (10~60)
❑ Gigabit Ethernet: 4 (3~10)
❑ The full range is 0 - 65535.
Note: Path cost takes precedence over port
priority.
AT-S29 Management Software User’s Guide
Configuring Bridge MIB Extensions
The Bridge MIB includes extensions for managed devices that support
Traffic Classes, Multicast Filtering and Virtual LANs. To configure these
extensions, use the Extended Bridge Configuration screen as shown
below.
Bridge Capability
Extended Multicast Filtering Service
No
Traffic Classes
Yes
Static Entry Individual Port
Yes
VLAN Learning
IVL
Configurable PVID Tagging
Yes
Local VLAN Capable
No
Parameter
Description
Extended
Multicast Filtering
Services
Enables filtering of individual multicast addresses
based on GMRP (GARP Multicast Registration
Protocol). Note that this function is not available
for the current firmware release.
Traffic Classes
Provides mapping of user priorities to multiple
traffic classes. (Refer to the Priority menu.)
Static Entry
Individual Port
Enables static filtering for unicast and multicast
addresses. (Refer to the Address Table.)
VLAN Learning
This switch uses Independent VLAN Learning
(IVL), whereby each port maintains its own VLAN
filtering database.
Configurable PVID
Tagging
Allows you to override the default PVID setting
(Port VLAN ID used in frame tags) and its egress
status (VLAN-Tagged or Untagged) on each port.
(Refer to VLAN/VLAN Port Configuration.).
Local VLAN
Capable
This switch does not support multiple local
bridges (that is, multiple Spanning Trees).
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Web-based Management
Bridge Settings
Traffic Classes
Enable
GMRP
Enable
GVRP
Enable
Parameter
Description
Traffic Class1
Multiple traffic classes are supported by this
switch as indicated under Bridge Capabilities.
However, you can disable this function by setting
this parameter to False.
GMRP1
GARP Multicast Registration Protocol (GMRP)
allows network devices to register endstations
with multicast groups.
The Internet Group Management Protocol (IGMP)
is currently used by this switch to provide
automatic multicast filtering.
GVRP1
GARP VLAN Registration Protocol (GVRP) defines
a way for switches to exchange VLAN information
in order to register necessary VLAN members on
ports across the network.
1. Not implemented in this firmware release.
96
AT-S29 Management Software User’s Guide
Priority
IEEE 802.1p defines up to eight separate traffic classes. This switch
supports Quality of Service (QoS) by using two priority queues, with
weighted fair queuing for each port. You can use the Priority menu to
configure the default priority for each port, or to display the mapping for
the traffic classes as described in the following sections.
Port Priority
Configuration
The default priority for all ingress ports is zero. Therefore, any inbound
frames that do not have priority tags will be placed in the low priority
output queue. Default priority is only used to determine the output
queue for the current port; no priority tag is actually added to the frame.
You can use the Port Priority Configuration screen to adjust the default
priority for any port as shown below:
Port
Default Ingress User
Priority
Number of Egress
Traffic Classes
1
0
2
2
0
2
3
0
2
4
0
2
5
0
2
Parameter
Description
Port
Numeric identifier for switch port.
Default Ingress
User Priority
Default priority can be set to any value from 0-7,
where 0-3 specifies the low priority queue and 47 specifies the high priority queue.
Number of Egress
Traffic Classes
Indicates that this switch supports two priority
output queues.
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Web-based Management
Port Traffic Class
Information
This switch provides two priority levels with weighted fair queuing for
port egress. This means that any frames with a default or user priority
from 0-3 are sent to the low priority queue “0” while those from 4-7 are
sent to the high priority queue “1” as shown in the following screen:
Port Priority 0 Priority 1 Priority 2 Priority 3 Priority 4 Priority 5 Priority 6 Priority 7 Class Range
98
1
0
0
0
0
1
1
1
1
0-1
2
0
0
0
0
1
1
1
1
0-1
3
0
0
0
0
1
1
1
1
0-1
4
0
0
0
0
1
1
1
1
0-1
5
0
0
0
0
1
1
1
1
0-1
Parameter
Description
Port
Numeric identifier for switch port.
User Priority
Shows that user priorities 0-3 specify the low
priority queue and 4-7 specify the high priority
queue.
AT-S29 Management Software User’s Guide
Configuring Virtual LANs
Use the VLAN Configuration menu to assign any port on the switch to
any of up to 16 LAN groups. In conventional networks with routers,
broadcast traffic is split up into separate domains. Switches do not
inherently support broadcast domains. This can lead to broadcast
storms in large networks that handle a lot of IPX traffic. By using IEEE
802.1Q compliant VLANs and GARP VLAN Registration Protocol, you can
organize any group of network nodes into separate broadcast domains,
confining broadcast traffic to the originating group. This also provides a
more secure and much cleaner network environment.
For a more detailed description of how to use VLANs, see Chapter 4. The
VLAN configuration screens are described in the following sections.
VLAN Basic
Information
The VLAN Basic Information screen displays basic information on the
VLAN type support by this switch.
VLAN Version Number
1
Maximum VLAN ID
2048
Maximum Number of Support VLANs
16
Current Number of 802.1Q VLANs Configured 1
Parameter
Description
VLAN Version
Number
The VLAN version used by this switch as specified
in the IEEE 802.1Q standard.
MAX VLAN ID
Maximum VLAN ID recognized by this switch.
MAX Supported
VLANs
Maximum number of VLANs that can be
configured on this switch.
Current Number of The number of VLANs currently configured on
VLANs Configured this switch.
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Web-based Management
VLAN Current
Table
This screen shows the current port members of each VLAN and whether
or not the port supports VLAN tagging. Ports assigned to a large VLAN
group that crosses several switches should use VLAN tagging. However,
if you just want to create a small port-based VLAN for one or two
switches, you can assign ports to the same untagged VLAN. The current
configuration is shown in the following screen.
VLAN Entry Delete Count: 0
VLAN ID:
1
Up Time at Creation
0 d 0 h 0 min 0 s
Status
Dynamic GVRP
Parameter
Description
VLAN Entry Delete
Count
The number of times a VLAN entry has been
deleted from this table.
VLAN ID
The ID for the VLAN currently displayed.
Up Time at
Creation
The value of sysUpTime (System Up Time) when
this VLAN was created.
Status
Shows how this VLAN was added to the switch:
Dynamic GVRP: Automatically learned via GVRP.
Permanent: Added as a static entry.
Egress Ports
Unit 1, Port 1
Unit 1, Port 2
Unit 1, Port 3
Unit 1, Port 4
Unit 1, Port 5
Unit 1, Port 6
Unit 1, Port 7
Unit 1, Port 8
100
Untagged Ports
Unit 1, Port 1
Unit 1, Port 2
Unit 1, Port 3
Unit 1, Port 4
Unit 1, Port 5
Unit 1, Port 6
Unit 1, Port 7
Unit 1, Port 8
Parameter
Description
Egress Ports
Shows the ports which have been added to the
displayed VLAN group.
Untagged Ports
Shows the untagged VLAN port members.
AT-S29 Management Software User’s Guide
VLAN Static List
Use this screen to create or remove VLAN groups.
Current
New
(none)
VLAN Static
Table
VLAN ID (1-2048)
<<Add
VLAN Name
Remove
Status
Enable
Parameter
Description
Current
Lists all the current VLAN groups created for this
system. Up to 16 VLAN groups can be defined. To
allow this switch to participate in external VLAN
groups, you must use the VLAN ID for the concerned
external groups.
New
Allows you to specify the name and numeric identifier
for a new VLAN group. (The VLAN name is only used
for management on this system; it is not added to the
VLAN tag.)
Status
Enables/disables the specified VLAN.
Add
Adds a new VLAN group to the current list.
Remove
Removes a VLAN group from the current list. If any
port is assigned to this group as untagged, it will be
reassigned to VLAN group 1 as untagged.
Use this screen to modify the settings for an existing VLAN. You can
add/delete port members for a VLAN from any unit in the stack, disable
or enable VLAN tagging for any port, or prevent a port from being
automatically added to a VLAN via the GVRP protocol. (Note that VLAN1
is fixed as an untagged VLAN containing all ports in the stack, and
cannot be modified via this screen.)
VLAN: 2 RD
Name
RD
Status
Enable
Parameter
Description
VID
The ID for the VLAN currently displayed.
Range: 1-2048
Name
A user-specified symbolic name for this VLAN.
String length: Up to 8 alphanumeric characters.
Status
Enables/disables the specified VLAN.
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Web-based Management
Use the screens shown below to assign ports to the specified VLAN
groups as an IEEE802.1Q tagged port. Assign ports as tagged if they are
connected to 802.1Q VLAN compliant devices. If the port is connected to
VLAN-unaware devices, frames will be passed to the untagged VLAN
group this port has been assigned to under VLAN Port Configuration.
Egress Ports
Non-Members:
Members:
(none)
<<Add
Remove>>
Unit 1, Port 1
Unit 1, Port 2
Unit 1, Port 3
Unit 1, Port 4
Unit 1, Port 5
Unit 1, Port 6
Unit 1, Port 7
Unit 1, Port 8
Forbidden Egress Ports
Members:
Non-Members:
(none)
<<Add
Remove>>
102
Unit 1, Port 1
Unit 1, Port 2
Unit 1, Port 3
Unit 1, Port 4
Unit 1, Port 5
Unit 1, Port 6
Unit 1, Port 7
Unit 1, Port 8
Parameter
Description
Egress Ports
Adds ports to the specified VLAN.
Forbidden Egress
Ports
Prevents a port from being automatically added
to this VLAN via GVRP.
AT-S29 Management Software User’s Guide
VLAN Static
Membership by
Port
Use the screen below to assign VLAN groups to the selected port. To
perform detailed port configuration for a specific VLAN, use the VLAN
Static Table.
Port Number:
1
Member:
Non-Member:
(none)
2 RD
<<Add
Remove>>
Parameter
Description
Port Number
Port number on the switch selected from the
upper display panel.
Add/Remove
Add or remove selected VLAN groups for the port
indicated in the Port Number field.
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Web-based Management
VLAN Port
Configuration
Port
PVID (1-2048)
Use this screen to configure port-specific settings for IEEE 802.1Q VLAN
features:
Acceptable Frame
Type
Ingress
Filtering
GVRP
Status
GVRP Failed
Registration
GVRP PDU
Origin
1
1
All
Enable
Enable
0
00-00-00-00-00-00
2
1
All
Enable
Enable
0
00-00-00-00-00-00
3
1
All
Enable
Enable
0
00-00-00-00-00-00
4
1
All
Enable
Enable
0
00-00-00-00-00-00
Parameter
Description
PVID
The VLAN ID assigned to untagged frames
received on this port. Use the PVID to assign
ports to the same untagged VLAN.
Acceptable Frame
Type1
This switch accepts “All" frame types, including
VLAN tagged or VLAN untagged frames. Note
that all VLAN untagged frames received on this
port are assigned to the PVID for this port.
Ingress Filtering1
If set to "True," incoming frames for VLANs which
do not include this port in their member set will
be discarded at the inbound port.
GVRP Status
Enables or disables GVRP for this port. When
disabled, any GVRP packets received on this port
will be discarded and no GVRP registrations will
be propagated from other ports.
Note that GVRP must be enabled for the switch
before this setting can take effect. (See Device
Control Menu / Extended Bridge Configuration.)
GVRP Failed
Registrations
The total number of failed GVRP registrations, for
any reason, on this port.
GVRP Last PDU
Origin
The Source MAC Address of the last GVRP
message received on this port.
1. 1: This control does not affect VLAN independent BPDU frames, such as GVRP or STP.
However, it does affect VLAN dependent BPDU frames, such as GMRP.
104
AT-S29 Management Software User’s Guide
IGMP Multicast Filtering
Multicasting is used to support real-time applications such as video
conferencing or streaming audio. A multicast server does not have to
establish a separate connection with each client. It merely broadcasts its
services to the network, and any hosts which want to receive the
multicast register with their local multicast switch/router. Although this
approach reduces the network overhead required by a multicast server,
the broadcast traffic must be carefully pruned at every multicast
server/router it passed through to ensure that traffic is only passed on
the hosts which subscribed to this service.
The AT-8324SX switch uses IGMP (Internet Group Management
Protocol) to query for any attached hosts who want to receive a specific
multicast service. The switch looks up the IP Multicast Group used for
this service and adds any port which received a similar request to that
group. It then propagates the service request on to any neighboring
multicast switch/router to ensure that it will continue to receive the
multicast service.
Configuring
IGMP
This protocol allows a host to inform its local switch/router that it wants
to receive transmissions addressed to a specific multicast group. You can
use the IGMP Configuration screen to configure multicast filtering
shown below:
IGMP Status
Enable
Act as IGMP Querier
Enable
IGMP Query Count (2-16)
5
IGMP Report delay (3-10)
5
minutes
Parameter
Description
IGMP Status
If enabled, the switch will monitor network traffic to determine which
hosts want to receive multicast traffic.
ACT as IGMP
Querier
If enabled, the switch can serve as the “querier,” which is responsible for
asking hosts if they want to receive multicast traffic. (Not available for the
current firmware release.)
IGMP Query Count
The maximum number of queries issued for which there has been no
response before the switch takes action to solicit reports.
IGMP Report Delay The time (in minutes) between receiving an IGMP Report for an IP
multicast address on a port before the switch sends an IGMP Query out
that port and removes the entry from its list.
Note
The default values are indicated in the sample screen.
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Web-based Management
IP Multicast
Registration
Table
Use the IP Multicast Registration Table to display all the multicast groups
active on this switch, including multicast IP addresses and the
corresponding VLAN ID.
VLAN ID:
1
Multicast IP Address:
224.0.1.22
Learned by:
IGMP
Multicast Group Port List:
Unit 1, Port 7
106
Parameter
Description
VID
VLAN ID assigned to this multicast group.
Multicast IP
IP address for specific multicast services.
Learned by
Indicates the manner in which this address was
learned: Dynamic or IGMP.
Multicast Group
Port List
The switch ports registered for the indicated
multicast service.
AT-S29 Management Software User’s Guide
Port Menus
Port Information
The Port Information screen displays the port status, link state, the
communication speed and duplex mode, as well as the flow control in
use. To change any of the port settings, use the Port Configuration
menu. The parameters shown in the following figure and table are for
the RJ-45 ports.
Port
Admin
Status
Link
Status
Speed
Status
Duplex Status
Flow Control Status
1
Enabled
Up
100M
Full
Disabled
2
Enabled
Down
10M
Half
Disabled
3
Enabled
Down
10M
Half
Disabled
4
Enabled
Up
10M
Half
Disabled
5
Enabled
Down
10M
Half
Disabled
Parameter
Description
Admin Status
Shows if the port is enabled or not.
Link Status
Indicates if the port has a valid connection to an
external device.
Speed Status
Shows the port speed (10M or 100M).
Duplex Status
Displays the current duplex mode.
Flow Control
Status
Shows the flow control type in use. Flow control
can eliminate frame loss by "blocking" traffic from
end stations connected directly to the switch.
Back pressure is used for half duplex and IEEE
802.3x for full duplex. Note that flow control
should not be used if a port is connected to hub.
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Web-based Management
Port
Configuration
Use the Port Configuration menus to configure any port or module on
the switch.
Port
Admin Status
1
4
✓ Enable
✓ Enable
✓ Enable
✓ Enable
5
✓ Enable
2
3
108
Duplex Mode
Flow Control
Auto-Negotiation
Disable
Auto-Negotiation
Disable
Auto-Negotiation
Disable
Auto-Negotiation
Disable
Auto-Negotiation
Disable
Parameter
Default
Description
Admin
Status
Enable
Allows you to disable a port due to
abnormal behavior (e.g., excessive
collisions), and then re-enable it after
the problem has been resolved. You
may also disable a port for security
reasons.
Duplex
Mode
AutoNegotiation
Used to set the current port speed,
duplex mode, and auto-negotiation.
The default for RJ-45 ports is autonegotiation. (Auto-negotiation is not
available for 100Base-FX ports.)
Flow
Control
Disable
Used to enable or disable flow control.
Flow control can eliminate frame loss by
"blocking" traffic from end stations or
segments connected directly to the
switch when its buffers fill. Back
pressure is used for half duplex and IEEE
802.3x for full duplex. Note that flow
control should not be used if a port is
connected to hub.
AT-S29 Management Software User’s Guide
Expansion Port
Information
The Expansion Port Information screen displays the port status, link
state, the communication speed and duplex mode, as well as the flow
control in use. To change any of the port settings, use the Expansion Port
Configuration menu. The parameters shown in the following figure and
table are for expansion ports.
Expansion Slot 1 - 1-Port 1000Base-SX-SC
Port
1
Admin Status Link Status Duplex Status Flow Control Status
Enabled
Down
Half
Disabled
Parameter
Description
Admin Status
Shows in the port is enabled or not.
Link Status
Indicates if the port has a valid connection to an
external device.
Duplex Status
Displays the current duplex mode (half or full
duplex).
Flow Control
Status
Shows the flow control type in use. Flow control
can eliminate frame loss by "blocking" traffic from
end stations connected directly to the switch.
Back pressure is used for half duplex and IEEE
802.3x for full duplex. Note that flow control
should not be used if a port is connected to hub.
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Web-based Management
Expansion Port
Configuration
Use the Expansion Port Configuration menus to configure any port or
module on the switch.
Expansion Slot 1 - 1-Port 1000Base-SX-SC
Port
1
110
Admin Status Duplex Status
✓ Enable
Auto
Flow Control Status
Disable
Parameter
Default
Description
Admin Status
Enable
Allows you to disable a port due to
abnormal behavior (e.g., excessive
collisions), and then re-enable it
after the problem has been
resolved. You may also disable a
port for security reasons.
Duplex Mode
AutoNegotiation
Used to set the port of full or half
duplex mode, or auto-negotiation.
The default for gigabit ports is autonegotiation. However, note that
auto-negotiation is not available for
the 100Mbps fiber ports.
Flow Control
Disabled
Used to enable or disable flow
control. Flow control can eliminate
frame loss by "blocking" traffic from
end stations or segments
connected directly to the switch
when its buffers fill. Back pressure is
used for half duplex and IEEE 802.3x
for full duplex. Note that flow
control should not be used if a port
is connected to hub.
AT-S29 Management Software User’s Guide
Using a Port Mirror for Analysis
You can mirror traffic from any source port to a target port for real-time
analysis. You cana then attach a logic analyzer or RMON probe to the
target port and study the traffic crossing the source port in a completely
unobtrusive manner. When mirroring port traffic, not that the target
port must be included in the same VLAN as the source port.
You can use the Mirror Port Configuration screen to designate a single
port pair for mirroring as shown below:
Status
Enable
Mirror Source Unit
1
Mirror Source Port
1
Mirror Target Unit
1
Mirror Target Port
2
Parameter
Description
Status
Enables/disables port mirroring.
Mirror Source Unit
The switch containing the mirror source port.
Mirror Source Port
The port whose traffic will be monitored.
Mirror Target Unit
The switch containing the mirror target port.
Mirror Target Port
The port that will “duplicate” or “mirror” all the
traffic happening on the monitored port.
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Web-based Management
Port Trunk Configuration
Port trunks can be used to increase the bandwidth of a network
connection or to ensure fault recovery. You can configure up to four
trunk connections (combining 2 to 4 ports into a fat pipe) between any
two AT-8324SX switches. However, before making any physical
connections between devices, us the Trunk Configuration menu to
specify the trunk on the devices at both ends. When using a port trunk,
note that:
112
❑
The ports used in a trunk must all be of the same media type (RJ45, 100 Mbps fiber, 1000 Mbps fiber). The ports that can be
assigned to the same trunk have certain other restrictions as
described later in this section.
❑
Ports can only be assigned to one trunk.
❑
The ports in the trunk must belong to the same switch chip (as
explained later in this section.
❑
The ports at both ends of a connection must be configured /as
trunk ports.
❑
The ports at both ends of a trunk must be configured in an
identical manner, including speed, duplex mode, and VLAN
assignments.
❑
The communication mode must be configured identically at both
ends of the trunk.
❑
None of the ports in a trunk can be configured as a mirror source
port or a mirror target port.
❑
All the ports in a trunk have to be treated as a whole when moved
from/to added, or deleted from a VLAN.
❑
The Spanning Tree Algorithm will treat all the ports in a trunk as a
whole.
❑
Enable the trunk prior to connecting any cable between the
switches to avoid creating a loop.
❑
Disconnect all trunk port cables or disable the trunk ports before
removing a port trunk to avoid creating a loop.
AT-S29 Management Software User’s Guide
You can use the Port Trunking Configuration screen to set up port trunks
as shown below:
Status List:
Trunk
1
Status
✓ Enable
Member List:
Current:
Trunk 1, Unit 1, Port 1
Trunk 1, Unit 1, Port 2
New:
<<Add
Remove
Trunk (1-12) 1
Unit
1
Port
1
Parameter
Description
Trunk
A unique identifier for this trunk. You can
configure up to four trunks per switch.
Status
Enables or disables the displayed port trunk.
Member List
You can create up to 16 trunks for the entire stack
by specifying the trunk identifier, switch unit, and
port number, and then pressing the “Add”
button. Each trunk can contain from 2 to 4 ports.
The RJ-45 ports used for each trunk must all be on the same internal
switch chip. The port groups permitted include:
❑
Group 1: 1, 2, 3, 4 and 13, 14, 15, 16
❑
Group 2: 5, 6, 7, 8 and 17, 18, 19, 20
The 100Base-FX fiber optic ports used for one side of a trunk must all be
on the same module. However, the 1000Base-SX and 1000Base-LX ports
used for one side of a trunk may be on any switch in the stack, or both on
the same switch if used as a standalone switch.
For example, when using Gigabit ports to form a trunk within a stack, the
Gigabit ports will all be at Port 25. In this case, you could specify a trunk
group consisting of:
(Unit1-Port25, Unit2-Port25, Unit3-Port25, Unit4-Port25)
or two trunks consisting of:
(Unit1-Port25, Unit2-Port25) and (Unit3-Port25, Unit4-Port25)
113
Web-based Management
Port Statistics
Use the Port Statistics menu to display Etherlike or RMON statistics for
any port in the stack. Select the required stack unit, and port or module.
The statistics displayed are indicated in the following figure and table.
Etherlike
Statistics
Etherlike Statistics display key statistics from the Ethernet-like MIB for
each port. Error statistics on the traffic passing through each port are
displayed. This information can be used to identify potential problems
with the switch (such as a faulty port or unusually heavy loading). Values
displayed have been accumulated since the last system reboot.
Port Number: 1
Etherlike Statistics
Alignment Errors
0
Late Collisions
0
FCS Errors
0
Excessive Collisions
0
Single Collision Frames
0
Internal MAC Transmit Errors
0
Multiple Collision Frames
0
Carrier Sense Errors
0
SQE Test Errors
0
Frames Too Long
0
Deferred Transmissions
0
Internal MAC Receive Errors
0
Parameter
Description
Alignment Errors
For 10 Mbps ports, this counter records alignment errors (missynchronized data packets). For 100 Mbps ports, this counter records the
sum of alignment errors and code errors (frames received with rxerror
signal).
FCS Errors
The number of frames received that are an integral number of octets in
length but do not pass the FCS check.
Single Collision
Frames1
The number of successfully transmitted frames for which transmission is
inhibited by exactly one collision.
Multiple Collision
Frames1
A count of successfully transmitted frames for which transmission is
inhibited by more that one collision.
SQE Test Errors1
A count of times that the SQE TEST ERROR message is generated by the
PLS sublayer.
Deferred
Transmissions1
A count of frames for which the first transmission attempt on a particular
interface is delayed because the medium was busy.
Late Collisions
The number of times that a collision is detected later than 512 bit-times
into the transmission of a packet.
114
AT-S29 Management Software User’s Guide
Parameter
Description
Excessive
Collisions1
The number of frames for which transmission failed due to excessive
collisions.
Internal Mac
Transmit Errors1
The number of frames for which transmission failed due to an internal
MAC sublayer transmit error.
Carrier Sense
Errors1
The number of times that the carrier sense condition was lost or never
asserted when attempting to transmit a frame.
Frames Too Long
The number of frames received that exceed the maximum permitted
frame size.
Internal Mac
Receive Errors1
The number of frames for which reception failed due to an internal MAC
sublayer receive error.
1. The reported values will always be zero because these statistics are not supported by the internal chip set.
RMON Statistics
RMON Statistics display key statistics for each port or media module
from RMON group 1. (RMON groups 2, 3 and 9 can only be accessed
using SNMP management software.) The following screen displays
overall statistics on traffic passing through each port. RMON statistics
provide access to a broad range of statistics, including a total count of
different frame types passing through each port. Values displayed have
been accumulated since the last system reboot.
RMON Statistics
Drop Events
Received Bytes
0
5301248
Jabbers
0
Collisions
0
8156
Received Frames
33745
64 Bytes Frames
Broadcast Frames
30405
65-127 Bytes Frames
16040
Multicast Frames
2312
128-255 Bytes Frames
6798
CRC/Alignment Errors
0
256-511 Bytes Frames
4076
Undersize Frames
0
512-1023 Bytes Frames
388
Oversize Frames
0
1024-1518 Bytes Frames
68
Fragments
0
115
Web-based Management
Parameter
Description
Drop Events
The total number of events in which packets were dropped due to lack of
resources.
Received Bytes
Total number of bytes of data received on the network. This statistic can
be used as a reasonable indication of Ethernet utilization.
Received Frames
The total number of frames (bad, broadcast and multicast) received.
Broadcast Frames
The total number of good frames received that were directed to the
broadcast address. Note that this does not include multicast packets.
Multicast Frames
The total number of good frames received that were directed to this
multicast address.
CRC/Alignment
Errors
For lOMbs ports, the counter records CRC/alignment errors (FCS or
alignment errors). For 10OMbs ports, the counter records the sum of
CRC/alignment errors and code errors (frame received with rxerror signal).
Undersize Frames
The total number of frames received that were less than 64 octets long
(excluding framing bits, but including FCS octets) and were otherwise well
formed.
Oversize Frames
The total number of frames received that were longer than 1518 octets
(excluding framing bits, but including FCS octets) and were otherwise well
formed.
Fragments
The total number of frames received that were less than 64 octets in
length (excluding framing bits, but including FCS octets) and had either an
FCS or alignment error.
Jabbers
The total number of frames received that were longer than 1518 octets
(excluding framing bits, but including FCS octets), and had either an FCS
or alignment error.
Collisions
The best estimate of the total number of collisions on this Ethernet
segment.
64 Byte Frames
The total number of frames (including bad packets) received and
transmitted that were 64 octets in length (excluding framing bits but
including FCS octets).
65-127 Byte
Frames
The total number of frames (including bad packets) received and
transmitted that were between 65 and 127 octets in length inclusive
(excluding framing bits but including FCS octets).
128-255 Byte
Frames
The total number of packets (including bad packets) received and
transmitted that were between 128 and 255 octets in length inclusive
(excluding framing bits but including FCS octets).
116
AT-S29 Management Software User’s Guide
Parameter
Description
256-511 Byte
Frames
The total number of packets (including bad packets) received and
transmitted that were between 256 and 511 octets in length inclusive
(excluding framing bits but including FCS octets).
512-1023 Byte
Frames
The total number of packets (including bad packets) received and
transmitted that were between 512 and 1023 octets in length inclusive
(excluding framing bits but including FCS octets).
1024-1518 Byte
Frames
The total number of packets (including bad packets received and
transmitted that were between 1024 and 1518 octets in length inclusive
(excluding framing bits but including FCS octets).
117
Chapter 4
Advanced Topics
This AT-8324SX switch supports Layer 2 switching and other advanced
features, which are described in this chapter.
Spanning Tree Algorithm
The Spanning Tree Algorithm (that is, the STA configuration algorithm as
outlined in IEEE 802.1 D) can be used to detect and disable network
loops, and to provide link backup. This allows the switch to interact with
other bridging devices (including STA compliant switches, bridges or
routers) in your network to ensure that only one route exists between
any two stations on the network. If redundant paths or loops are
detected, one or more ports are put into a blocking state (stopped from
forwarding packets) to eliminate the extra paths. Moreover, if one or
more of the paths in a stable spanning tree topology fail, this algorithm
will automatically change ports from blocking state to forwarding state
to re-establish contact with all network stations.
The STA uses a distributed algorithm to select a bridging device (STA
compliant switch, bridge or router) that serves as the root of the
spanning tree network. It selects a root port on each bridging device
(except for the root device) which incurs the lowest path cost when
forwarding a packet from that device to the root device. Then it selects a
designated bridging device from each LAN which incurs the lowest path
cost when forwarding a packet from that LAN to the root device. All
ports connected to designated bridging devices are assigned as
designated ports. After determining the lowest cost spanning tree, it
enables all root ports and designated ports, and disables all other ports.
Network packets are therefore only forwarded between root ports and
designated ports, eliminating any possible network loops.
119
Advanced Topics
Once a stable network topology has been established, all bridges listen
for Hello BPDUs (Bridge Protocol Data Units) transmitted from the Root
Bridge. If a bridge does not get a Hello BPDU after a predefined interval
(Maximum Age), the bridge assumes that the link to the Root Bridge is
down. This bridge will then initiate negotiations with other bridges to
reconfigure the network to re-establish a valid network topology.
The following figure gives an illustration of how the Spanning Tree
Algorithm assigns bridging device ports.
Root Bridging
Device
Designated Port
Designated Port
Root Port
Root Port
Blocking
Designated Port
Root Port
Using STA and
Trunk Ports
120
Designated Port
Designated Port
Root Port
Root Port
The Spanning Tree Algorithm will treat a trunk as a whole instead of
individual ports. STA will determine the path cost and path priority of a
trunk connection based on the first port. However, the states of
individual trunk ports are determined based on individual link status.
Remember that the first port of a trunk MUST be connected to make sure
STA works properly.
Virtual LANs
Switches do not inherently support broadcast domains, which can lead
to broadcast storms in large networks that handle a lot of IPX traffic. In
conventional networks with routers, broadcast traffic is split up into
separate domains to confine broadcast traffic to the originating group
and provide a much cleaner network environment. By supporting
VLANS, this switch allows you to create segregated broadcast domains.
However, note that if you need to support intra-VLAN communications,
you must use a router or Layer 3 switch.
An IEEE 802.lQ 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
video conferencing).
VLANs provide greater network efficiency by reducing broadcast traffic,
but also allow you to make network changes without having to update
IP addresses or IP subnets. VLANs inherently provide a higher level of
network security, since traffic must pass through a Layer 3 switch or a
router to reach a different VLAN.
The AT-8324SX switch supports the following VLAN features:
❑
Up to 16 VLANs based on the IEEE 802.1Q standard
❑
Distributed VLAN learning across multiple switches using explicit
or implicit tagging and GARP/GVRP protocol
❑
Port overlapping, allowing a port to participate in multiple VLANs
❑
End stations can belong to multiple VLANs (so long as an end
station’s network interface card is 802.1Q compliant and is
configured for multiple VLANs)
❑
Passing traffic between VLAN-aware and VLAN-unaware devices
❑
Two-level priority queue
❑
Port trunking with VLANs
121
Advanced Topics
Assigning Ports
to VLANs
Before enabling VLANs for the switch, you must first assign each port to
the VLAN group(s) it will participate in. (By default all ports are assigned
to VLAN 1 as untagged ports.) Add a port as a tagged port (that is, a port
attached to a VLAN-aware device) if you want it to carry traffic for one or
more VLANs and the device at the other end of the link also supports
802.1Q VLANS. Then assign the port at the other end of the link to the
same VLAN(s). However, if you want a port on this switch to participate
in one or more VLANS, but the device at the other end of the link does
not support VLANS, then you must add this port as an untagged port
(that is, a port attached to a VLAN-unaware device).
Port-based VLANs are tied to specific ports. The switch’s forwarding
decision is based on the destination MAC address and its associated
port. Therefore, to make valid forwarding and flooding decisions, the
switch learns the relationship of the MAC address to its related port-and
thus to the VLAN-at run-time.
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 PVID of the receiving port).
❑
If the frame is tagged, the switch uses the tagged VLAN ID to
identify the port broadcast domain of the frame.
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 must connect them using a router or
Layer 3 switch.
122
Forwarding
Tagged/
Untagged Frames
Ports can be assigned to one untagged VLAN and multiple tagged
VLANS. Each port on the switch is therefore capable of passing tagged or
untagged frames. To forward a frame from a VLAN-aware device to a
VLAN-unaware device, the switch first decides where to forward the
frame, and then strips off the VLAN tag. However, to forward a frame
from a VLAN-unaware device to a VLAN-aware device, the switch first
decides where to forward the frame, and then inserts a VLAN tag
reflecting this port’s default VID. The default PVID is VLAN 1, but this can
be changed (see page 2-35 or 3-25).
VLAN aware
VLAN aware
VLAN 1, 3
(802.1Q tags)
VLAN 1, 2
(802.1Q tags)
VLAN aware
trunk
VLAN 1, 2, 3
(802.1Q tags)
VLAN aware
VLAN 1, 2, 3
(802.1Q tags)
VLAN aware
VLAN 1, 3
(untagged)
VLAN unaware
Forwarding
Traffic with
Unknown VLAN
Tags
Up to 2048 VLANs are supported by the IEEE 802.lQ protocol, but this
switch only supports 16 VLANS. Therefore, if this switch is attached to
any device that forwards frames with unknown VLAN tags, or to
endstations which issue VLAN registration requests for unknown VLANS,
this traffic will be dropped.
Automatic VLAN
Registration
GVRP defines a system whereby the switch can automatically learn the
VLANs each endstation should be assigned to. If an endstation (or its
network adapter) supports the IEEE 802. 1 Q VLAN protocol, it can be
configured to broadcast a message to your network indicating the VLAN
groups it wants to join. When this switch receives these messages, it will
automatically place the receiving port in the specified VLANS, and then
forward the message to all other ports. When the message arrives at
another switch that supports GVRP, it will also place the receiving port in
the specified VLANS, and pass the message on to all other ports. VLAN
requirements are propagated in this way throughout the network. This
allows GVRP compliant devices to be automatically configured for VLAN
groups based solely on endstation requests.
123
Advanced Topics
Port Trunks
You can configure up to three port trunks on this switch, or 12 trunks for
the entire stack. Each trunk can combine up to four ports into an
aggregate connection with up to 800 Mbps of bandwidth when
operating at full duplex. Besides balancing the load across each port in
the trunk, the additional ports provide redundancy by taking over the
load if another port in the trunk should fail.
When using port trunks, remember that:
124
❑
Before removing a port trunk via the configuration menu, you
must disable all the ports in the trunk or remove all the network
cables. Otherwise, a loop may be created.
❑
To disable a single link within a port trunk, you should first
remove the network cable, and then disable both ends of the link
via the configuration menu. This allows the traffic passing across
that link to be automatically distributed to the other links in the
trunk, without losing any significant amount of traffic.
Class-of-Service (CoS) Support
The AT-8126XS switch provides two transmit queues on each port, with
a weighted round-robin scheme. This function can be used to provide
independent priorities for various types of data such as real-time video
or voice, and best-effort data.
Priority assignment to a packet in the AT-8126XS switch is accomplished
through explicit assignment by end stations which have applications
that require a higher priority than best-effort. This switch utilizes the IEEE
802.lp and 802.lQ tag structure to decide priority assignments for the
received packets.
125
Advanced Topics
IGMP Snooping and IP Multicast Filtering
The Internet Group Management Protocol (IGMP) runs between hosts
and their immediately neighboring multicast router/switch. The
protocol’s mechanisms allow a host to inform its local router/switch that
it wants to receive transmissions addressed to a specific multicast group.
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 responsibility of querying
the LAN for group members.
Based on the group membership information learned from IGMP, a
router/switch can determine which (if any) multicast traffic needs to be
forwarded to each of its ports. At Layer-3, multicast routers use this
information, along with a multicast routing protocol, to support IP
multicasting across the Internet.
IGMP provides the final step in an IP multicast packet delivery service
since it is only concerned with forwarding multicast traffic from the local
router/switch to group members on directly attached subnetwork or
LAN segment.
This switch supports IP Multicast Filtering by:
❑
Passively snooping on the IGMP Query and IGMP Report packets
transferred between IP multicast routers and IP multicast host
groups to learn IP Multicast group members.
❑
Actively sending IGMP Query messages to solicit IP Multicast
group members.
The purpose of IP multicast filtering is to optimize a switched network’s
performance, so multicast packets will only be forwarded to those ports
containing multicast group hosts or multicast routers/switches instead
of flooding to all ports in the subnet (VLAN).
The AT-8324SX switch, with I P multicast filtering capability, not only
passively monitors IGMP Query and Report messages; it can also actively
send IGMP Query messages to learn locations of multicast
routers/switches and member hosts in multicast groups within each
VLAN.
However, note that IGMP neither alters nor routes any IP multicast
packets. Since IGMP is not concerned with the delivery of IP multicast
packets across subnetworks, an external IP multicast router is needed if
IP multicast packets have to be routed across different subnetworks.
126
SNMP Management Software
SNMP (Simple Network Management Protocol) is a communication
protocol designed specifically for managing devices or other elements
on a network. Network equipment commonly managed with SNMP
includes hubs, switches, routers and host computers. SNMP is typically
used to configure these devices for proper operation in a network
environment, as well as monitor them to evaluate performance and
detect potential problems.
Allied Telesyn provides the network management software for free with
all of its manageable products. This software contains a complete
management platform, including network discovery, mapping, event
manager, log manager, MIB browser, RMON analysis tools, and device
management modules. Allied Telesyn also provides optional plug-in
device management modules for HP OpenView
127
Advanced Topics
Remote Monitoring
Remote Monitoring (RMON) provides a cost-effective way to monitor
large networks by placing embedded or external probes on distributed
network equipment (hubs, switches or routers). The provided network
management software can access the probes embedded in recent Allied
Telesyn network products to perform traffic analysis, troubleshoot
network problems, evaluate historical trends, or implement proactive
management policies. RMON has already become a valuable tool for
network managers faced with a quickly changing network landscape
that contains dozens or hundreds of separate segments. RMON is the
only way to retain control of the network and analyze applications
running at multi-megabit speeds. It provides the tools you need to
implement either reactive or proactive policies that can keep your
network running based on realtime access to key statistical information.
This switch provides support for RMON which contains the four key
groups required for basic remote monitoring. These groups include:
Statistics: Includes all the tools needed to monitor your network for
common errors and overall traffic rates. Information is provided on
bandwidth utilization, peak utilization, packet types, errors and
collisions, as well as the distribution of packet sizes.
History: Can be used to create a record of network utilization, packet
types, errors and collisions. You need a historical record of activity to be
able to track down intermittent problems. Historical data can also be
used to establish normal baseline activity, which may reveal problems
associated with high traffic levels, broadcast storms, or other unusual
events. Historical information can also be used to predict network
growth and plan for expansion before your network becomes too
overloaded.
Alarms: Can be set to test data over any specified time interval, and can
monitor absolute or changing values (such as a statistical counter
reaching a specific value, or a statistic changing at a certain rate over the
set interval). Alarms can be set to respond to either rising or falling
thresholds.
Events: Defines the action to take when an alarm is triggered. The
response to an alarm can include recording the alarm in the Log Table or
sending a message to a trap manager. Note that the Alarm and Event
Groups are used together to record important events or immediately
respond to critical network problems.
128
Appendix A
Troubleshooting
If you have trouble making a connection to the agent module, then
please refer to the following sections.
Console Connection
If you cannot access the on-board configuration program via a serial
port, be sure to have set the terminal emulator program to VT100
compatible, 8 data bits, 1 stop bit, no parity and 9600 bps. Also check
that the null-modem serial cable conforms to the pin-out
connections provided in Appendix B. If you forgot or lost the
password, contact Allied Telesyn Support for help.
In-Band Connection
You can access the management agent on the switch from anywhere
within the attached network using Telnet, a Web browser, or other
network management software. However, you must first configure
the switch with a valid IP address, subnet mask, and default gateway.
If you have trouble establishing a link to the management agent,
check to see if you have a valid network connection. Then verify that
you entered the correct IP address. Also, be sure the port through
which you are connecting to the switch has not been disabled. (See
Configuring Port Parameters on page 2-17.) If it has not been
disabled, then check the network cabling that runs between your
remote location and the switch.
Note
Up to four concurrent Telnet connections are supported.
129
Troubleshooting
Upgrading Firmware via the Serial Port
You can upgrade system firmware by connecting your computer to
the serial port on the agent module, and using a console interface
package that supports the XModem protocol.
1. Restart the system by using the Restart System command.
2. When the system initialization screen appears as shown below,
press "D" to download system firmware, and then indicate the
code type (1: Runtime, 2: POST 3: Mainboard).
LOADER Version Vl.02
POST
Version Vl.02
------Performing the Power-On Self Test (POST)
EPROM Checksum Test.......................PASS
Testing the System SDP-AM................PASS
CPU Self Test............................PASS
EEPROM Checksum Test.....................PASS
SEEPROM Checksum Test.....................PASS
MAC Address...................00-30-84-52-28-00
----------
Power-On Self Test Completed
--------
(D)ownload System Image or (S)tart Application: [S]
Select the Firmware Type to Download (I)Runtime (2)POST
(3)mainboard [1]:
For example, if you select 1 (for downloading agent firmware), the
system will display the following message:
(D)ownload System, Image or (S)tart Application: [S]
Select the Firmware Type to Download (I)Runtime (2)POST
(3)Mainboard [1] : 1
Your Selection: Runtime Code
Download code to FlashROM address 0xO2880000
Change Baud Rate to 115200 and Press <ENTER> to Download.
3. Change your baud rate to 115200 bps, and press Enter to enable
download mode. From the terminal emulation program, select
the file you want to download, set the protocol to XModem, and
then initialize downloading.
If you use Windows HyperTerminal, disconnect and reconnect
to enable the new baud rate.
130
The download file should be an AT-8324SX binary file from
Allied Telesyn; otherwise the agent will not accept it. The file
naming convention is:
Runtime program:
POST program:
Mainboard program:
AT-S29.BIN
Boot-Vx.yx, and
8051 -Vx.yz
4. After the file has been downloaded, the console screen will
display information similar to that shown below. Press "s" to start
the management interface, change the baud rate back to 9600,
and press Enter. The Logon screen will then appear
XModem Download to DRAM buffer area DxOO200000:.. SUCCESS !
Verifying image in DRAM download buffer 0xOO200000... SUCCESS
Update FlashROM Image at OxO2880000... SUCCESS !
(D)ownload another Image or (S)tart Application: [SI s
Change Baud Rate to 9600 and Press <ENTER>.
For details on managing the switch, refer to Chapter 2 for
information on the out-of-band console interface, or Chapter
3 for information on the Web interface.
131
Appendix B
Pin Assignments
DB9 Serial Port Pin Description
The DB-9 serial port on the panel of the Network Management
Module is used to connect the switch to a management device. The
on-board menu-driven configuration program can be accessed from
a terminal, a PC running a terminal emulation program, or from a
remote location via a modem connection. The pin assignments used
to connect various device types to the switch’s management port are
provided in the following tables.
Pin 1
Pin 9
133
Pin Assignments
DB-9 Port Pin
Assignments
PC DB9
DTE
Pin #
Modem
DB25
DCE Pin
#
EIA
Circuit
CCITT
Signal
Description
Switch’s
DB9 DTE
Pin #
CF
109
DCD (Data Carrier Detected)
1
1
8
BB
104
RxD (Received Data)
2
2
3
BA
103
TxD (Transmitted Data)
3
3
2
CD
108.2
DTR (Data Terminal Ready)
4
4
20
AB
102
SG (Signal Ground)
5
5
7
CC
107
DSR (Data Set Ready)
6
6
6
CA
105
RTS (Request-to-Send)
7
7
4
CB
106
CTS (Clear-to-Send)
8
8
5
CE
125
RI (Ring Indicator)
9
9
22
Connection from
Switch’s Serial
Port to 9-Pin
COM Port on PC
Switch’s 9-Pin Serial
Port
PC’s 9-Pin COM Port
1 DCD
DCD
1
2 RXD
TXD
3
3 TXD
RXD
2
4 DTR
DSR
6
SGND
5
6 DSR
DTR
4
7 RTS
CTS
8
8 CTS
RTS
7
RI
9
5 SGND
9 RI
134
CCITT Signal
Signal
Direction
DTE-DCE
Connection from
Switch’s Serial
Port to 25-Pin
DCE Port
Connection from
Switch’s Serial
Port to 25-Pin
DTE Port on PC
Switch’s 9-Pin Serial
Port
Modem’s 25-pin
DCE Port
CCITT Signal
1
DCD
8
2
RXD
3
3
TXD
2
4
DTR
20
5
SGND
7
6
DSR
6
7
RTS
4
8
CTS
5
9
RI
22
Switch’s 9-Pin Serial
Port
Null Modem
1 DCD
1
1
8 DCD
2 RXD
2
3
3 TXD
3 TXD
3
2
2 RXD
4 DTR
4
8
20 DTR
5 SGND
5
20
7 SGND
6 DSR
6
7
6 DSR
7 RTS
7
4
4 RTS
8 CTS
9
20
5
6
5 CTS
9 RI
PC’s 25-Pin DTE Port
22 RI
135
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