User’s Guide
Management
Software
AT-S84
For the AT-9000/24 Layer 2 Gigabit Ethernet Switch
Version 1.1
613-000368 Rev. B
Copyright © 2006 Allied Telesyn, Inc.
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn, Inc.
Microsoft and Internet Explorer are registered trademarks 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, Inc. 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,
Inc. 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, Inc. has been advised of,
known, or should have known, the possibility of such damages.
Contents
Preface ............................................................................................................................................................ 13
Where to Find Web-based Guides ................................................................................................................... 14
Contacting Allied Telesyn ................................................................................................................................. 15
Online Support ........................................................................................................................................... 15
Email and Telephone Support.................................................................................................................... 15
Returning Products .................................................................................................................................... 15
Sales or Corporate Information .................................................................................................................. 15
Management Software Updates................................................................................................................. 15
Chapter 1: Overview ...................................................................................................................................... 17
Management Overview..................................................................................................................................... 18
Local Connection.............................................................................................................................................. 19
Remote Connection.......................................................................................................................................... 20
Using an SNMP Network Management Application................................................................................... 20
Management Access Level .............................................................................................................................. 21
Section I: Using the Menus Interface ......................................................................23
Chapter 2: Getting Started with the Menus Interface ................................................................................. 25
Starting a Local Management Session............................................................................................................. 26
Using the Menus Interface................................................................................................................................ 28
Quitting from a Local Management Session..................................................................................................... 29
Chapter 3: Basic Switch Parameters ........................................................................................................... 31
Configuring the IP Address, Subnet Mask, and Gateway Address .................................................................. 32
Enabling and Disabling the DHCP Client ......................................................................................................... 35
Configuring System Administration Information ............................................................................................... 36
Setting the User Interface Configuration .......................................................................................................... 38
Disabling or Enabling the Web Server.............................................................................................................. 42
Disabling or Enabling the Telnet Server ........................................................................................................... 43
Configuring SNTP............................................................................................................................................. 44
Viewing Switch Information .............................................................................................................................. 47
Rebooting the Switch........................................................................................................................................ 50
Pinging a Remote System ................................................................................................................................ 52
Viewing the System Log ................................................................................................................................... 55
Returning the AT-S84 Management Software to the Factory Default Values .................................................. 57
Chapter 4: SNMP ........................................................................................................................................... 59
SNMP Overview ............................................................................................................................................... 60
Default SNMP Community Strings ............................................................................................................. 61
Enabling or Disabling the SNMP Agent............................................................................................................ 62
Enabling Authentication Traps.......................................................................................................................... 63
Changing the Default SNMP Community Names............................................................................................. 64
Working with Trap Receivers............................................................................................................................ 65
Adding a Trap Receiver ............................................................................................................................. 65
Enabling or Disabling Trap Receivers........................................................................................................ 65
3
Contents
Modifying a Trap Receiver.......................................................................................................................... 66
Deleting a Trap Receiver............................................................................................................................67
Chapter 5: Port Configuration ....................................................................................................................... 69
Displaying the Port Parameters ........................................................................................................................ 70
Enabling or Disabling a Port .............................................................................................................................72
Setting a Port’s Speed and Duplex Mode ......................................................................................................... 73
Changing the Flow Control Setting ...................................................................................................................75
Changing the Back Pressure Setting ................................................................................................................76
Displaying Port Statistics .................................................................................................................................. 77
Chapter 6: Port Trunking ...............................................................................................................................81
Port Trunking Overview ....................................................................................................................................82
Static Port Trunk Overview......................................................................................................................... 82
Port Trunking Guidelines ............................................................................................................................ 83
LACP Trunks..................................................................................................................................................... 84
LACP Trunk Status..................................................................................................................................... 84
LACP Port Priority Parameter..................................................................................................................... 85
LACP Trunk Guidelines ..............................................................................................................................86
Setting Up a Port Trunk ....................................................................................................................................88
Creating a Port Trunk ................................................................................................................................. 88
Modifying a Port Trunk ............................................................................................................................... 90
Enabling or Disabling a Port Trunk.............................................................................................................91
Setting Up an LACP Trunk................................................................................................................................92
Creating an LACP Trunk ............................................................................................................................ 92
Configuring the LACP Port Priority ............................................................................................................. 93
Verifying the LACP Group Settings ............................................................................................................ 94
Disabling an LACP Trunk ........................................................................................................................... 95
Chapter 7: Port Mirroring .............................................................................................................................. 97
Port Mirroring Overview ....................................................................................................................................98
Configuring Port Mirroring ................................................................................................................................. 99
Enabling or Disabling Port Mirroring ...............................................................................................................101
Chapter 8: Virtual LANs and GVRP ............................................................................................................ 103
VLAN Features ............................................................................................................................................... 104
Increased Performance ............................................................................................................................ 104
Improved Manageability ........................................................................................................................... 104
Increased Security.................................................................................................................................... 104
VLAN Overview............................................................................................................................................... 106
VLAN Name.............................................................................................................................................. 106
VLAN Identifier .........................................................................................................................................106
Port VLAN Identifier.................................................................................................................................. 106
VLAN Port Members................................................................................................................................. 106
Tagged Port Members .......................................................................................................................107
Untagged Port Members .................................................................................................................... 107
Incoming and Outgoing Tagged and Untagged Frames .......................................................................... 107
Incoming Frames ............................................................................................................................... 107
Outgoing Frames ................................................................................................................
............... 108
Guidelines for Creating a VLAN ............................................................................................................... 108
Untagged VLAN........................................................................................................................................ 109
Tagged VLAN Example ............................................................................................................................ 111
Working with VLANS....................................................................................................................................... 113
Creating a VLAN....................................................................................................................................... 113
Configuring the Port PVID ........................................................................................................................ 116
Displaying the VLANs............................................................................................................................... 117
Modifying a VLAN..................................................................................................................................... 119
4
AT-S84 Management Software User’s Guide
Changing the VLAN Name ................................................................................................................ 119
Adding or Removing a Tagged Port in a VLAN ................................................................................. 119
Deleting a VLAN....................................................................................................................................... 120
Resetting to the Default VLAN ................................................................................................................. 121
GVRP ............................................................................................................................................................. 122
GVRP Overview ....................................................................................................................................... 122
Guidelines ................................................................................................................................................ 122
Enabling or Disabling GVRP .................................................................................................................... 123
Chapter 9: Quality of Service (QoS) ........................................................................................................... 125
QoS Overview ................................................................................................................................................ 126
Mapping CoS Priorities to Egress Queues ..................................................................................................... 129
Configuring CoS ............................................................................................................................................. 132
Chapter 10: IGMP Snooping ....................................................................................................................... 137
IGMP Snooping Overview .............................................................................................................................. 138
Configuring IGMP ........................................................................................................................................... 140
Viewing the Multicast Groups ......................................................................................................................... 142
Chapter 11: Rapid Spanning Tree Protocol (RSTP) ................................................................................. 145
RSTP Overview .............................................................................................................................................. 146
Bridge Priority and the Root Bridge.......................................................................................................... 146
Designated Bridge and Designated Port ........................................................................................... 147
Path Costs and Port Costs ................................................................................................................ 147
Port Priority........................................................................................................................................ 148
Hello Time and Bridge Protocol Data Units (BPDUs) ........................................................................ 149
Point-to-Point and Edge Ports ........................................................................................................... 149
Mixed STP and RSTP Networks .............................................................................................................. 151
Rapid Spanning Tree and VLANs ............................................................................................................ 152
Enabling or Disabling RSTP ........................................................................................................................... 153
Configuring the RSTP Bridge Settings ........................................................................................................... 156
Configuring STP Compatibility........................................................................................................................ 158
Configuring RSTP Port Settings ..................................................................................................................... 159
Configuring the Basic RSTP Port Settings............................................................................................... 159
Configuring the Advanced RSTP Port Settings........................................................................................ 161
Displaying the RSTP Topology....................................................................................................................... 164
Chapter 12: 802.1x Network Access Control ............................................................................................ 167
802.1x Network Access Control Overview ..................................................................................................... 168
Authentication Process ............................................................................................................................ 169
Authenticator Ports................................................................................................................................... 169
General Steps .......................................................................................................................................... 171
Network Access Control Guidelines......................................................................................................... 171
Configuring 802.1x Network Access Control .................................................................................................. 174
Chapter 13: RADIUS Authentication Protocol .......................................................................................... 179
RADIUS Overview .......................................................................................................................................... 180
RADIUS Implementation Guidelines ........................................................................................................ 180
Configuring the RADIUS Server ..................................................................................................................... 181
Displaying the RADIUS Server Settings......................................................................................................... 183
Chapter 14: Broadcast Storm Control ....................................................................................................... 185
Broadcast Storm Control Overview ................................................................................................................ 186
Configuring Broadcast Storm Control ............................................................................................
................. 187
Chapter 15: Working With System Files .................................................................................................... 189
Downloading a New Management Software Image Using TFTP ................................................................... 190
Uploading or Downloading a Configuration File ............................................................................................. 193
5
Contents
Uploading the Configuration File ..............................................................................................................193
Downloading a Configuration File.............................................................................................................195
Section II: Using the Web Browser Interface ....................................................... 197
Chapter 16: Starting a Web Browser Management Session .................................................................... 199
Establishing a Remote Connection to Use the Web Browser Interface ..........................................................200
Web Browser Tools.........................................................................................................................................203
Quitting a Web Browser Management Session .............................................................................................. 204
Chapter 17: Basic Switch Parameters ....................................................................................................... 205
Configuring an IP Address, Subnet Mask and Gateway Address...................................................................206
Enabling and Disabling the DHCP Client ........................................................................................................ 208
Configuring System Administration Information .............................................................................................. 209
Setting the User Interface Configuration.........................................................................................................211
Enabling or Disabling the Web Server ............................................................................................................ 215
Enabling or Disabling the Telnet Server ......................................................................................................... 216
Configuring SNTP ........................................................................................................................................... 217
Viewing System Information ...........................................................................................................................218
Rebooting a Switch ......................................................................................................................................... 221
Pinging a Remote System ..............................................................................................................................223
Viewing the System Log ................................................................................................................................. 225
Returning the AT-S84 Management Software to the Factory Default Values................................................. 227
Chapter 18: Port Configuration ................................................................................................................... 229
Viewing and Configuring Multiple Ports ..........................................................................................................230
Viewing and Configuring a Single Port ...........................................................................................................233
Displaying Port Statistics ................................................................................................................................236
Chapter 19: SNMP ........................................................................................................................................ 239
Enabling or Disabling the SNMP Agent .......................................................................................................... 240
Changing the Default SNMP Community Names ........................................................................................... 241
Working with Trap Receivers .......................................................................................................................... 242
Adding and Enabling a Trap Receiver...................................................................................................... 242
Disabling a Trap Receiver ........................................................................................................................242
Deleting a Trap Receiver..........................................................................................................................242
Chapter 20: Port Trunking ........................................................................................................................... 243
Setting Up a Port Trunk ..................................................................................................................................244
Creating a Port Trunk ............................................................................................................................... 244
Enabling or Disabling a Port Trunk...........................................................................................................245
Setting Up an LACP Trunk..............................................................................................................................246
Creating an LACP Trunk .......................................................................................................................... 246
Configuring the LACP Port Priority ........................................................................................................... 246
Verifying the LACP Group Settings .......................................................................................................... 247
Disabling an LACP Trunk ......................................................................................................................... 248
Chapter 21: Port Mirroring .......................................................................................................................... 251
Configuring Port Mirroring ............................................................................................................................... 252
Disabling Port Mirroring .................................................................................................................................. 253
Chapter 22: Virtual LANs .............................................................................................................................255
Creating a VLAN ............................................................................................................................................. 256
Configuring the PVID of Untagged Ports ........................................................................................................ 258
Displaying the VLANs ..................................................................................................................................... 261
Modifying a VLAN ........................................................................................................................................... 262
Deleting a VLAN ............................................................................................................................................. 264
6
AT-S84 Management Software User’s Guide
Deleting All VLANs ......................................................................................................................................... 265
Enabling or Disabling GVRP .......................................................................................................................... 266
Chapter 23: Quality of Service (QoS) ......................................................................................................... 267
Mapping CoS Priorities to Egress Queues ..................................................................................................... 268
Configuring CoS ............................................................................................................................................. 270
Chapter 24: IGMP ......................................................................................................................................... 273
Configuring IGMP ........................................................................................................................................... 274
Viewing the Multicast Group Members........................................................................................................... 275
Chapter 25: RSTP ........................................................................................................................................ 277
Basic RSTP Configuration.............................................................................................................................. 278
Configuring RSTP Port Settings ..................................................................................................................... 281
Configuring the Basic RSTP Port Settings............................................................................................... 281
Configuring the Advanced RSTP Port Settings........................................................................................ 283
Viewing the RSTP Topology........................................................................................................................... 286
Chapter 26: 802.1x Network Access Control ............................................................................................ 289
Configuring 802.1x Network Access Control .................................................................................................. 290
Chapter 27: RADIUS Authentication Protocol .......................................................................................... 293
Configuring the RADIUS Client ...................................................................................................................... 294
Chapter 28: Broadcast Storm Control ....................................................................................................... 295
Configuring Broadcast Storm Control ............................................................................................................. 296
Chapter 29: Working with System Files .................................................................................................... 297
Downloading a New Management Software Image Using TFTP ................................................................... 298
Uploading or Downloading a Configuration File ............................................................................................. 300
Section III: Using the Command Line Interface .................................................. 303
Chapter 30: Getting Started with the Command Line Interface .............................................................. 305
CLI Command Modes Introduction................................................................................................................. 306
Command Formatting Conventions ......................................................................................................... 307
User EXEC Command Mode ................................................................................................................... 308
Privileged EXEC Command Mode ........................................................................................................... 309
Global Configuration Command Mode..................................................................................................... 309
Interface Configuration Command Mode ................................................................................................. 311
Port Mirroring Example...................................................................................................................... 312
VLAN Configuration Command Mode...................................................................................................... 313
VLAN Example .................................................................................................................................. 314
Starting the Command Line Interface............................................................................................................. 315
Command Formatting..................................................................................................................................... 316
Command Line Interface Features........................................................................................................... 316
Command Line Syntax Conventions........................................................................................................ 316
Appendix A: AT-S84 Default Settings ........................................................................................................ 319
Basic Switch Default Settings......................................................................................................................... 320
System Reboot Default Settings .............................................................................................................. 320
User Interface Configuration Default Settings.......................................................................................... 320
Management Interface Default Settings................................................................................................... 320
Ping Default Settings................................................................................................................................ 321
System IP Configuration Default Settings ................................................................................................ 321
System Administration Configuration Default Settings............................................................................. 321
SNMP Default Settings................................................................................................................................... 322
Port Configuration Default Settings ................................................................................................................ 323
7
Contents
Quality of Service ............................................................................................................................................ 324
IGMP Snooping Default Settings ....................................................................................................................325
RSTP Default Settings .................................................................................................................................... 326
802.1x Network Access Control Default Settings ........................................................................................... 327
RADIUS Server Default Settings ....................................................................................................................328
Broadcast Storm Control Default Settings ......................................................................................................329
Index .............................................................................................................................................................. 331
8
Figures
Figure 1. Connecting the Management Cable to the Console Port .....................................................................................26
Figure 2. Login Menu...........................................................................................................................................................27
Figure 3. Main Menu............................................................................................................................................................27
Figure 4. Basic Switch Configuration Menu.........................................................................................................................32
Figure 5. System IP Configuration Menu.............................................................................................................................33
Figure 6. System Admin. Configuration Menu.....................................................................................................................36
Figure 7. User Interface Configuration Menu.......................................................................................................................38
Figure 8. SNTP Configuration Menu....................................................................................................................................44
Figure 9. Time Zone Configuration Menu............................................................................................................................45
Figure 10. General Information Menu..................................................................................................................................47
Figure 11. Switch Tools Configuration Menu.......................................................................................................................50
Figure 12. System Reboot Menu.........................................................................................................................................51
Figure 13. Ping Execution Menu .........................................................................................................................................52
Figure 14. Ping Results .......................................................................................................................................................54
Figure 15. System Log Menu ..............................................................................................................................................55
Figure 16. SNMP Configuration Menu.................................................................................................................................63
Figure 17. Port Configuration Menu.....................................................................................................................................70
Figure 18. Statistics Menu ...................................................................................................................................................77
Figure 19. Static Port Trunk Example..................................................................................................................................82
Figure 20. LACP Trunk Example.........................................................................................................................................84
Figure 21. Advanced Switch Configuration Menu................................................................................................................88
Figure 22. Trunk Configuration Menu..................................................................................................................................89
Figure 23. LACP Port Priority Menu ....................................................................................................................................93
Figure 24. LACP Group Status Menu..................................................................................................................................95
Figure 25. Port Mirroring Menu............................................................................................................................................99
Figure 26. Untagged VLAN ...............................................................................................................................................109
Figure 27. Tagged VLAN ...................................................................................................................................................111
Figure 28. VLAN Management Menu ................................................................................................................................114
Figure 29. VLAN Creation Menu........................................................................................................................................115
Figure 30. Config VLAN Member Menu.............................................................................................................................118
Figure 31. GVRP Example ................................................................................................................................................122
Figure 32. Quality of Service Configuration Menu .............................................................................................................129
Figure 33. Traffic Class Configuration Menu ...................................................................................
Figure 34. Port Priority Configuration Menu ......................................................................................................................133
Figure 35. IGMP Configuration Menu................................................................................................................................140
Figure 36. MAC Address DIsplayed on IGMP Configuration Menu...................................................................................143
Figure 37. View Group Members Menu.............................................................................................................................143
Figure 38. Point-to-Point Ports ..........................................................................................................................................150
Figure 39. Edge Port .........................................................................................................................................................151
Figure 40. Point-to-Point and Edge Port............................................................................................................................151
Figure 41. VLAN Fragmentation........................................................................................................................................152
Figure 42. RSTP Configuration Menu................................................................................................................................153
Figure 43. RSTP Basic Port Configuration Menu ..............................................................................................................159
Figure 44. RSTP Advanced Port Configuration Menu .......................................................................................................162
Figure 45. Topology Information Menu..............................................................................................................................164
Figure 46. Example of the Authenticator Role ...................................................................................................................170
Figure 47. Authentication Across Multiple Switches ..........................................................................................................173
Figure 48. Port Based Access Control Configuration Menu ..............................................................................................174
Figure 49. RADIUS Server Configuration Menu ................................................................................................................181
Figure 50. Storm Control Configuration Menu...................................................................................................................187
..................................130
9
Figures
Figure 51. Software Upgrade Menu (1 of 2) ......................................................................................................................191
Figure 52. Software Upgrade Menu (2 of 2) ......................................................................................................................191
Figure 53. Configuration File Upload/Download Menu ......................................................................................................194
Figure 54. TFTP Configuration File Upload/Download Menu ............................................................................................194
Figure 55. Entering a Switch’s IP Address in the URL Field..............................................................................................200
Figure 56. AT-S84 Login Dialog Box .................................................................................................................................201
Figure 57. Home Page for the AT-9000/24 Gigabit Ethernet Switch .................................................................................201
Figure 58. IP Configuration Page.......................................................................................................................................206
Figure 59. Administration Configuration Page ...................................................................................................................209
Figure 60. User Interface Page..........................................................................................................................................212
Figure 61. SNTP Configuration Page ................................................................................................................................217
Figure 62. Switch Information Page...................................................................................................................................218
Figure 63. System Reboot Configuration Page .................................................................................................................221
Figure 64. Ping Test Configuration Page...........................................................................................................................223
Figure 65. Ping Test Results Page ....................................................................................................................................224
Figure 66. System Log Page .............................................................................................................................................225
Figure 67. Port Configuration Page ...................................................................................................................................230
Figure 68. Configuration of Port Page ...............................................................................................................................233
Figure 69. Statistics Page..................................................................................................................................................236
Figure 70. SNMP Configuration Page................................................................................................................................241
Figure 71. Trunk Configuration Page.................................................................................................................................244
Figure 72. LACP Port Priority Page ...................................................................................................................................247
Figure 73. LACP Group Status Page.................................................................................................................................248
Figure 74. Port Mirroring Page...........................................................................................................................................252
Figure 75. Create VLAN Page ...........................................................................................................................................256
Figure 76. PVID Page........................................................................................................................................................259
Figure 77. VLAN Configuration - Members Page ..............................................................................................................261
Figure 78. VLAN Information Page ....................................................................................................................................262
Figure 79. Modify VLAN Page ...........................................................................................................................................263
Figure 80. Traffic Class Configuration Page......................................................................................................................268
Figure 81. Port Priority Configuration Page .......................................................................................................................271
Figure 82. IGMP Snooping Page.......................................................................................................................................274
Figure 83. IGMP Snooping - Group Members Page..........................................................................................................275
Figure 84. Rapid Spanning Tree Configuration Page ........................................................................................................278
Figure 85. RSTP Basic Port Configuration Page .................................................................................
Figure 86. RSTP Advanced Port Configuration Page........................................................................................................284
Figure 87. Designated Topology Information Page ...........................................................................................................286
Figure 88. 802.1x Configuration Page ...............................................................................................................................290
Figure 89. RADIUS Configuration Page ............................................................................................................................294
Figure 90. Broadcast Storm Control Page.........................................................................................................................296
Figure 91. Image Upgrade Page........................................................................................................................................299
Figure 92. Configuration File Upload/Download Page .......................................................................................................301
Figure 93. Main Menu........................................................................................................................................................315
Figure 94. Command Line Prompt, User Executive Mode.................................................................................................315
..............................282
10
Tables
Table 1. Menus Interface Operations .................................................................................................................................28
Table 2. Default Mappings of IEEE 802.1p Priority Levels to Egress Port Priority Queues .............................................127
Table 3. RSTP Auto-Detect Port Costs ............................................................................................................................148
Table 4. RSTP Auto-Detect Port Trunk Costs ..................................................................................................................148
Table 5. Port Priority Value Increments ............................................................................................................................149
Table 6. RSTP Point-to-Point Status ................................................................................................................................163
Table 7. RSTP Point-to-Point Status ................................................................................................................................285
Table 8. Command Modes ...............................................................................................................................................307
Table 9. User EXEC Command Mode Commands ..........................................................................................................308
Table 10. Privileged EXEC Command Mode Commands ................................................................................................309
Table 11. Global Configuration Command Mode Commands ..........................................................................................309
Table 12. Interface Configuration Command Mode Commands ......................................................................................311
Table 13. VLAN Configuration Command Mode Commands ...........................................................................................313
Table 14. Command Line Syntax Conventions ................................................................................................................316
11
Tables
12
Preface
This guide contains instructions on how to use the AT-S84 management
software to manage and monitor the AT-9000/24 Gigabit Ethernet switch.
The AT-S84 management software has three management interfaces:
menus, web browser, and CLI. You access the menus and CLI interfaces
through the console port on the switch or through Telnet, and the web
browser interface from any management workstation on your network that
has a web browser application. For background information on the
management interfaces, refer to Chapter 1, “Overview” on page 17.
This preface contains the following sections:
“Where to Find Web-based Guides” on page 14
“Contacting Allied Telesyn” on page 15
13
Preface
Where to Find Web-based Guides
The installation and user guides for all Allied Telesyn products are
available in portable document format (PDF) on our web site at
www.alliedtelesyn.com. You can view the documents online or
download them onto a local workstation or server.
14
AT-S84 Management Software User’s Guide
Contacting Allied Telesyn
This section provides Allied Telesyn contact information for technical
support as well as sales and corporate information.
Online Support You can request technical support online by accessing the Allied Telesyn
Knowledge Base: http://kb.alliedtelesyn.com. You can use the
Knowledge Base to submit questions to our technical support staff and
review answers to previously asked questions.
Email and
Telephone
Support
Returning
Products
Sales or
Corporate
Information
Management
Software Updates
For Technical Support via email or telephone, refer to the Support &
Services section of the Allied Telesyn web site: www.alliedtelesyn.com.
Products for return or repair must first be assigned a return materials
authorization (RMA) number. A product sent to Allied Telesyn without an
RMA number will be returned to the sender at the sender’s expense.
To obtain an RMA number, contact Allied Telesyn Technical Support
through our web site: www.alliedtelesyn.com.
You can contact Allied Telesyn for sales or corporate information through
our web site: www.alliedtelesyn.com. To find the contact information for
your country, select Contact Us -> Worldwide Contacts.
New releases of management software for our managed products are
available from either of the following Internet sites:
Allied Telesyn web site: www.alliedtelesyn.com
Allied Telesyn FTP server: ftp://ftp.alliedtelesyn.com
To download new software from the Allied Telesyn FTP server from your
workstation’s command prompt, you must have FTP client software.
Additionally, you must log in to the server. The user name is “anonymous”
and your email address is the password.
15
Preface
16
Chapter 1
Overview
This chapter provides an overview of the AT-S84 management software
for the AT-9000/24 Gigabit Ethernet switch. This chapter describes the
different methods for accessing the software and the management access
levels. This chapter contains the following sections:
“Management Overview” on page 18
“Local Connection” on page 19
“Remote Connection” on page 20
“Management Access Level” on page 21
17
Chapter 1: Overview
Management Overview
The AT-S84 management software allows you to view and adjust the
operating parameters of the AT-9000/24 Gigabit Ethernet switch. Here are
a few examples of the functions that you can perform with the
management software:
Enable and disable ports
Configure a port’s speed and duplex mode
Create port trunks
Configure a port mirror
Configure Quality of Service (QoS)
Create and tagged virtual LANs
Configure 802.1x network access control
The AT-S84 management software is preinstalled on the switch with
default settings for all of the switch’s operating parameters. You do not
have to manage the switch if the default settings are adequate for your
network. Instead, you can use the device as an unmanaged switch by
connecting it to your network, as explained in the hardware installation
guide, and powering on the unit.
Note
The default settings for the management software are listed in
Appendix A, “AT-S84 Default Settings” on page 319.
To actively manage the switch and adjust its operating parameters, you
must connect to an AT-9000/24 Gigabit Ethernet switch and access the
switch’s AT-S84 management software. There are two ways to connect to
the switch:
Locally
Remotely
Depending upon the method you choose, specific AT-S84 management
software interfaces are available. When you have a local connection, you
can use the menus (described in Section I of this guide) or the command
line interface (CLI) (described in Section III). With a remote connection
you can use the menus, CLI, and web browser interfaces, or a third-party
network management application. (The web browser interface is
described in Section II).
The following sections in this chapter briefly describe each type of
management session.
18
Local Connection
AT-S81 Management Software User’s Guide
To establish a local connection with a switch, you connect a terminal or a
PC with a terminal emulator program to the terminal port on the front of the
switch using the management cable included with the unit. This type of
connection is referred to as “local” because you must be physically close
to the switch, such as in the wiring closet where the switch is located.
Note
For instructions on how to start a local management session, refer to
“Starting a Local Management Session” on page 26.
With a local connection, you can manage the switch using the menus or
CLI.
A switch does not need an Internet Protocol (IP) address for you to
manage it locally. You can start a local management session on a switch
at any time. It does not interfere with the forwarding of network packets by
the device.
19
Chapter 1: Overview
Remote Connection
You can use any management station on your network that has the Telnet
application, an SNMP manager, or as web browser to manage an
AT-9000/24 Gigabit Ethernet switch. These are referred to as remote
connections.
In order for you to manage a switch using a remote connection, the switch
must have an IP address and subnet mask. To manually assign an IP
address, refer to “Configuring the IP Address, Subnet Mask, and Gateway
Address” on page 32. To configure the switch to obtain its IP configuration
from a DHCP server, refer to “Enabling and Disabling the DHCP Client” on
page 35. The initial assignment of an IP address must be made through a
local management session.
For instructions on how to start a remote management session to use the
web browser interface, refer to “Establishing a Remote Connection to Use
the Web Browser Interface” on page 200.
Using an SNMP
Network
Management
Application
You can use the Simple Network Management Protocol (SNMP) to run a
network management application such as AT-View to manage the switch
through a remote connection. A familiarity with how to use management
information base (MIB) objects is necessary for this type of management.
The AT-S84 management software supports the following MIBs:
SNMP MIB-II (RFC 1213)
Bridge MIB (RFC 1493)
Remote Network MIB (RFC 1757)
Allied Telesyn managed switch MIB
You must download the Allied Telesyn managed switch MIB
(atiswitch.mib) file from the Allied Telesyn web site and compile the files
with your SNMP application. For compilation instructions, refer to your
third-party application’s documentation. Refer to Chapter 4, “SNMP” on
page 59 for information about how to configure SNMP on the switch.
20
Management Access Level
The AT-S84 management software has one level of management access:
manager. When you log in as a manager, you can view and configure all of
a switch’s operating parameters. You log in as a manager by entering the
appropriate username and password when you start an AT-S84
management session. The default username and password are both
“manager”.
AT-S81 Management Software User’s Guide
21
Chapter 1: Overview
22
Section I
Using the Menus Interface
The chapters in this section explain how to manage the switch using the
menus interface of the AT-S84 management software. The chapters
include:
Chapter 2, “Getting Started with the Menus Interface” on page 25
Chapter 3, “Basic Switch Parameters” on page 31
Chapter 5, “Port Configuration” on page 69
Chapter 4, “SNMP” on page 59
Chapter 6, “Port Trunking” on page 81
Chapter 7, “Port Mirroring” on page 97
Chapter 8, “Power Over Ethernet” on page 81
Chapter 8, “Virtual LANs and GVRP” on page 103
Chapter 9, “Quality of Service (QoS)” on page 125
Chapter 10, “IGMP Snooping” on page 137
Chapter 11, “Rapid Spanning Tree Protocol (RSTP)” on page 145
Chapter 12, “802.1x Network Access Control” on page 167
Chapter 13, “RADIUS Authentication Protocol” on page 179
Chapter 14, “Broadcast Storm Control” on page 185
Chapter 15, “Working With System Files” on page 189
Note
The web browser interface is described in Section II, “Using the Web
Browser Interface” on page 197, and the command line interface is
described in Section III, “Using the Command Line Interface” on
page 303.
Section I: Using the Menus Interface 23
24 Section I: Using the Menus Interface
Chapter 2
Getting Started with the Menus Interface
This chapter provides information and instructions on how to access the
menus interface of the AT-S84 management software by starting a local
management session. This chapter contains the following sections:
“Starting a Local Management Session” on page 26
“Using the Menus Interface” on page 28
“Quitting from a Local Management Session” on page 29
Section I: Using the Menus Interface 25
Chapter 2: Getting Started with the Menus Interface
Starting a Local Management Session
You establish a local management session with the AT-9000/24 Gigabit
Ethernet switch by connecting a terminal or personal computer with a
terminal emulation program to the RS-232 console port on the front panel
of the switch.
Note
You do not need to assign an IP address to the switch to manage
the unit from a local management session.
To start a local management session, perform the following procedure:
1. Connect one end of the management cable included with the switch to
the console port on the AT-9000/24 Gigabit Ethernet switch, as shown
in Figure 1.
801
Figure 1. Connecting the Management Cable to the Console Port
2. Connect the other end of the cable to the RS-232 port on a terminal or
PC with a terminal emulator program.
3. Configure the terminal or terminal emulator program as follows:
Baud per second: 9600
Data bits: 8
Stop bits: 1
Flow control: None
Note
These settings are for a DEC VT100 or ANSI terminal, or an
equivalent terminal emulation program. You cannot change this.
26 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
The Login Menu is shown in Figure 2.
==============================================================
AT-9000/24 Management System
Local - Console
Allied Telesyn International Corp.
Copyright 2006
==============================================================
Login Menu
Login:
Figure 2. Login Menu
4. Enter the manager login name and press Return. The default name is
“manager”.
You are prompted for a password.
5. Enter the manager password. The default password is “friend”.
Note
To change the login name or password, refer to “Setting the User
Interface Configuration” on page 38.
The Main Menu is shown in Figure 3.
AT-9000/24 Local Management System
Enter the character in square brackets to select option
Main Menu
[G]eneral Information
[B]asic Switch Configuration
[A]dvanced Switch Configuration
Switch [T]ools
[S]tatistics
[C]ommand Line Interface
[Q]uit
Command>
Figure 3. Main Menu
Section I: Using the Menus Interface 27
Chapter 2: Getting Started with the Menus Interface
Using the Menus Interface
If you are using a DEC VT00 or ANSI (the default) terminal configuration,
refer to Table 1 for instructions on how to move through the menus and
select menu options.
When directed to You must
Make a menu selection Type the menu option letter enclosed
Table 1. Menus Interface Operations
in brackets, such as typing P to select
[P]ort Configuration.
Enter information (for
example, entering a port
number)
Return to previous menu Type Q for Quit to previous menu.
When you enter a letter to select a field in which you can enter a value, a
message is displayed. For example:
Enter new password>
The “>” symbol indicates that you can enter a new value for the parameter
or change the existing value. After you have entered a value, press Enter.
Changes are immediately activated on the AT-9000/24 Gigabit Ethernet
switch.
Note
The web browser interface is described in Section II, “Using the Web
Browser Interface” on page 197, and the command line interface is
described in Section III, “Using the Command Line Interface” on
page 303.
Type the information and press Enter.
28 Section I: Using the Menus Interface
Quitting from a Local Management Session
To quit a local management session, return to the Main Menu and type Q
for Quit. When you are finished managing the switch, make sure to exit
from a management session. Quitting from a local session prevents
unauthorized changes to the switch’s configuration if you leave your
workstation unattended.
Note
A local management session automatically times out if there is no
management activity during a pre-defined length of time referred to
as the timeout period. The timeout feature is intended to protect the
parameter settings on the switch from unauthorized changes should
you leave your management station unattended during a
management session. The default timeout value is 10 minutes. To
change the timeout default value, refer to “Setting the User Interface
Configuration” on page 38.
AT-S84 Management Software User’s Guide
Section I: Using the Menus Interface 29
Chapter 2: Getting Started with the Menus Interface
30 Section I: Using the Menus Interface
Chapter 3
Basic Switch Parameters
This chapter contains the following sections:
“Configuring the IP Address, Subnet Mask, and Gateway Address” on
page 32
“Enabling and Disabling the DHCP Client” on page 35
“Configuring System Administration Information” on page 36
“Setting the User Interface Configuration” on page 38
“Disabling or Enabling the Web Server” on page 42
“Disabling or Enabling the Telnet Server” on page 43
“Configuring SNTP” on page 44
“Viewing Switch Information” on page 47
“Rebooting the Switch” on page 50
“Pinging a Remote System” on page 52
“Returning the AT-S84 Management Software to the Factory Default
Values” on page 57
Section I: Using the Menus Interface 31
Chapter 3: Basic Switch Parameters
Configuring the IP Address, Subnet Mask, and Gateway Address
This procedure explains how to manually assign an IP address, subnet
mask, and gateway address to the switch. Before performing the
procedure, note the following:
An IP address and subnet mask are not required for normal network
operations of the switch. Values for these parameters are only required
if you want to remotely manage the device with a web browser.
A gateway address is only required if you want to remotely manage
the device from a remote management station that is separated from
the switch by a router.
To configure the switch to automatically obtain its IP configuration from
a DHCP server on your network, go to “Enabling and Disabling the
DHCP Client” on page 35.
To set the switch’s IP configuration, perform the following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4.
AT-9000/24 Local Management System
Main Menu -> Basic Switch Configuration Menu
System [A]dministration Configuration
System [I]P Configuration
S[N]MP Configuration
[P]ort Configuration
[U]ser Interface Configuration
Rapid [S]panning Tree Configuration
Storm [C]ontrol Configuration
SN[T]P Configuration
[Q]uit to previous menu
Command>
Figure 4. Basic Switch Configuration Menu
32 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
2. From the Basic Switch Configuration Menu, type I to select System IP
Configuration.
The System IP Configuration Menu is shown in Figure 5.
AT-9000/24 Local Management System
Basic Switch Configuration -> System IP Configuration Menu
MAC Address: 00:06:5H:B2:65:84
IP Address: 0.0.0.0
Subnet Mask: 0.0.0.0
Gateway: 0.0.0.0
DHCP Mode: Disabled
----------------------- <COMMAND> ----------------------------Set [I]P Address
Set Subnet [M]ask
Set Default [G]ateway
Enable/Disable [D]HCP Mode
[Q]uit to previous menu
Command>
3. To set the switch’s IP address, do the following:
4. To set the switch’s subnet mask, do the following:
Figure 5. System IP Configuration Menu
The top portion of the menu displays the current IP address, subnet
mask, and gateway address for the switch. The menu also displays the
switch’s MAC address. The MAC address cannot be changed. The
menu also displays the current status of the DHCP client on the switch.
The Enable/Disable DHCP Mode option is described in “Enabling and
Disabling the DHCP Client” on page 35.
a. Type I to select Set IP Address.
The following prompt is displayed:
Enter new IP address>
b. Type the IP address for the switch and press Enter.
a. Type M to select Set Subnet Mask.
The following prompt is displayed:
Enter new subnet mask>
Section I: Using the Menus Interface 33
Chapter 3: Basic Switch Parameters
b. Type the subnet mask for the switch and press Enter.
5. To set the switch’s gateway address, do the following:
a. Type G to select Set Default Gateway.
The following prompt is displayed:
Enter new gateway IP address>
b. Type the gateway IP address for the switch and press Enter.
34 Section I: Using the Menus Interface
Enabling and Disabling the DHCP Client
This procedure explains how to activate and deactivate the DHCP client
on the switch. When the client is activated, the switch obtains its IP
configuration, such as its IP address and subnet mask, from a DHCP
server on your network. Before performing the procedure, note the
following:
An IP address and subnet mask are not required for normal network
operations of the switch. Values for these parameters are only required
if you want to remotely manage the device with a web browser.
The DHCP client is disabled by default on the switch.
The DHCP client does not support BOOTP servers.
To activate or deactivate the DHCP client on the switch, perform the
following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
AT-S84 Management Software User’s Guide
The Basic Switch Configuration Menu is shown in Figure 4 on page 32.
2. From the Basic Switch Configuration Menu, type I to select System IP
Configuration.
The System IP Configuration Menu is shown in Figure 5 on page 33.
3. Type D to select Enable/Disable DHCP Mode.
The following prompt is displayed:
Enable or Disable DHCP mode (E/D)>
4. Type E to select Enable or D to select Disable.
If you enable the client, it immediately begins to send queries to the
DHCP server. It continues to send queries until it receives a response.
Section I: Using the Menus Interface 35
Chapter 3: Basic Switch Parameters
Configuring System Administration Information
This section explains how to assign a name to the switch, as well as
specify the location of the switch and the name of the switch’s
administrator. Entering this information is optional.
To set a switch’s administration information, perform the following
procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page
32.
2. From the Basic Switch Configuration Menu, type A to select System
Administration Information.
The System Administration Configuration Menu is shown in Figure 6.
AT-9000/24 Local Management System
Basic Switch Configuration -> System Admin. Configuration Menu
Description: AT-9000/24
ObjectID: 1.3.6.1.4.1.207.1.4
Name:
Location:
Contact:
----------------------- <COMMAND> ----------------------------Set System [N]ame
Set System [L]ocation
Set System [C]ontact Information
[Q]uit to previous menu
Command>
Figure 6. System Admin. Configuration Menu
The Description parameter in the top portion of the menu displays the
model name of the switch. The System Object ID parameter is the
numeric ID of the switch. You cannot change these parameters.
3. To set the system’s name, do the following:
a. Type N to select Set System Name.
The following prompt is displayed:
36 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
Enter system name>
b. Type a name for the switch (for example, Sales). The name is
optional and can contain up to 50 characters.
Note
Allied Telesyn recommends that you assign names to the switches.
Names can help you identify the switches when you manage them
and can also help you avoid performing a configuration procedure
on the wrong switch.
4. To enter the system’s location, do the following:
a. Type L to select Set System Location.
The following prompt is displayed:
Enter system location>
b. Type information to describe the location of the switch (for
instance, Third Floor). The location is optional and can contain up
to 50 characters.
5. To enter the administrator’s name, do the following:
a. Type C to select Set System Contact Information.
The following prompt is displayed:
Enter system contact>
b. Type the name of the network administrator responsible for
managing the switch. The contact name is optional and can
contain up to 50 characters.
Section I: Using the Menus Interface 37
Chapter 3: Basic Switch Parameters
Setting the User Interface Configuration
This procedure explains how to adjust the user interface and security
features on the switch. With this procedure you can change various
settings that control user access to the switch.
To set the switch’s user interface configuration, perform the following
procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page
32.
2. From the Basic Switch Configuration Menu, type U to select User
Interface Configuration.
The User Interface Configuration Menu is shown in Figure 7.
AT-9000/24 Local Management System
AT-9000/24 Local Management System
Basic Switch Configuration -> User Interface Configuration Menu
Basic Switch Configuration -> User Interface Configuration Menu
Console UI Idle Timeout: 5 Min.
Console UI Idle Timeout: 5 Min.
Telnet UI Idle Timeout: 5 min.
Telnet UI Idle Timeout: 5 min.
Telnet Server: Enabled
Telnet Server: Enabled
SNMP Agent: Enabled
SNMP Agent: Enabled
Web Server: Enabled
Web Server: Enabled
User Name: manager
User Name: manager
----------------------- <COMMAND> -----------------------------
----------------------- <COMMAND> ----------------------------Set [C]onsole UI Time Out Enable/Disable Te[l]net Server
Set [C]onsole UI Time Out Enable/Disable Te[l]net Server
Set [T]elnet UI Time Out Enable/Disable [S]NMP Agent
Set [T]elnet UI Time Out Enable/Disable [S]NMP Agent
Change Administrator User [N]ame Enable/Disable [W]eb Server
Change Administrator User [N]ame Enable/Disable [W]eb Server
Change Administrator [P]assword [Q]uit to previous menu
Change Administrator [P]assword [Q]uit to previous menu
[R]ADIUS Server Configuration
[R]ADIUS Server Configuration
Command>
Command>
Figure 7. User Interface Configuration Menu
The Telnet server option is described in “Disabling or Enabling the
Telnet Server” on page 43.
The web server option is described in “Disabling or Enabling the Web
Server” on page 42.
38 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
The SNMP option is described in “Enabling or Disabling the SNMP
Agent” on page 62.
The RADIUS Server Configuration option is described Chapter 13,
“RADIUS Authentication Protocol” on page 179.
3. To configure the console UI idle time out parameter, do the following:
a. Type C to select Set Console UI Time Out.
The following prompt is displayed:
Enter console idle timeout>
b. Enter a number for the timeout value. The range is 0 to 60 minutes,
and the default is 5 minutes. A timeout value to 0 causes the switch
to never time out a local management session.
The console UI idle time out parameter specifies the length of time
a local management session can be inactive before the
management software automatically ends it. This feature prevents
unauthorized individuals from configuring the switch if you leave
your management workstation unattended.
This parameter applies to a local management session but not to a
remote SNMP or web management session. An SNMP
management session remains active as long as the network
management application is active. A web browser management
session remains active as long as your web browser is open.
Note
If you select 0, you must always remember to properly log off from a
local management session when you are finished to prevent
blocking future management sessions with the switch.
4. To configure the Telnet UI idle time out parameter, do the following:
a. Type T to select Set Telnet UI Time Out.
The following prompt is displayed:
Enter console idle timeout>
b. Enter a number for the timeout value. The range is 0 to 60 minutes,
and the default is 5 minutes. A timeout value to 0 causes the switch
to never timeout a local management session.
Section I: Using the Menus Interface 39
Chapter 3: Basic Switch Parameters
The Telnet UI idle time out parameter specifies the length of time a
remote Telnet management session can be inactive before the
management software automatically ends it. This feature prevents
unauthorized individuals from configuring the switch if you leave
your management workstation unattended.
This parameter applies to a local management session but not to a
remote SNMP or web management session. An SNMP
management session remains active as long as the network
management application is active. A web browser management
session remains active as long as your web browser is open.
5. To change the AT-S84 management login user name, do the
following:
a. Type N to select Change Administrator User Name.
The following prompt is displayed:
Enter current password>
b. Enter the current login password. The management software
prompts you for the password to prevent an unauthorized
individual from changing the login name.
c. Type the new user name and press Enter. The default name is
“manager.” The name can be from 0 to 12 characters. Spaces are
allowed. The login name is case sensitive. Not entering a new
login name deletes the current login name without assigning a new
one.
The new user name appears in the User Field in the top portion of
the menu. You must use the new login user name the next time
you start a local or web browser management session.
6. To change the manager login password, do the following:
a. Type P to select Change Administrator Password.
The following prompt is displayed:
Enter old password>
b. Enter the current manager password and press Enter.
The following prompt is displayed:
Enter new password>
40 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
c. Type the new password and press Enter. The password can be
from 0 to 12 characters. Allied Telesyn recommends not using
special characters, such as spaces and exclamation points. The
password is case sensitive. Not entering a new password deletes
the current password without assigning a new one.
The following prompt is displayed:
Retype new password>
d. Retype the new password and press Enter.
You must use the new login password the next time you start a
local or remote 3management session.
Section I: Using the Menus Interface 41
Chapter 3: Basic Switch Parameters
Disabling or Enabling the Web Server
The AT-S84 management software is shipped with web server software.
The software is available so that you can remotely manage the switch with
a web browser from any management station on your network. (The
instructions for managing a switch with a web browser are described in
Chapter 16, “Starting a Web Browser Management Session” on page
199.)
The default setting for the web server is enabled,
To disable or enable the web server, perform the following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page
32.
2. From the Basic Switch Configuration Menu, type U to select User
Interface Configuration.
The User Interface Configuration Menu is shown in Figure 7 on page
38.
3. From the User Interface Configuration Menu, type W to select Enable/
Disable Web Server.
The following prompt is displayed:
Enable or Disable Web server (E/D)>
4. Type D to disable the web server or E to enable it.
42 Section I: Using the Menus Interface
Disabling or Enabling the Telnet Server
This procedure describes how to enable or disable the Telnet server on
the switch. The default setting for the Telnet server is enabled,
To disable or enable the Telnet server, perform the following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page 32.
2. From the Basic Switch Configuration Menu, type I to select User
Interface Configuration.
The User Interface Configuration Menu is shown in Figure 7 on page
38.
3. From the User Interface Configuration Menu, type L to select Enable/
Disable Telnet Server.
AT-S84 Management Software User’s Guide
The following prompt is displayed:
Enable or Disable Telnet server (E/D)>
4. Type D to disable the Telnet server or E to enable it.
Section I: Using the Menus Interface 43
Chapter 3: Basic Switch Parameters
Configuring SNTP
The AT-S84 software is shipped with the client version of the Simple
Network Time Protocol (SNTP). You can configure AT-S84 to obtain the
current time and date from an SNTP or Network Time Protocol (NTP)
server located on your network or on the internet.
SNTP is a reduced version of the NTP. However, the SNTP client software
is interoperable with NTP servers.
To configure SNTP, perform the following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page
32.
2. From the Basic Switch Configuration Menu, type T to select Set SNTP
Server IP.
The SNTP Configuration Menu is shown in Figure 8
AT-9000/24 Local Management System
Basic Switch Configuration -> SNTP Configuration Menu
Time ( HH:MM:SS ) : 00:19:58
Date ( YYYY/MM/DD) : 2006/01/01
SNTP Server IP : Enabled
SNTP Polling Interval : Enabled
Time Zone : GMT (+800:Taipei)
Daylight Saving : Disabled
----------------------- <COMMAND> ----------------------------Set SNTP Server I[P]
Set SNTP [I]nterval
S[e]t Daylight Saving
Set Time [Z]one
[Q]uit to previous menu
Command>
Figure 8. SNTP Configuration Menu
3. Configure the SNTP server’s IP address:
a. Type P to select Set SNTP Server IP.
44 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
The following prompt is displayed:
Enter new IP address>
b. Type the IP address for the SNTP server you want to use.
4. To set the SNTP interval:
a. Type I to select Set SNTP Interval.
The following prompt is displayed:
Enter Interval Time>
b. Type a number to specify the number of minutes between
occurrences of polling the SNTP server. The range is 1 to 60
minutes and the default is 1 minute.
5. To set the time zone:
a. Type Z to select Set Time Zone.
The Time Zone Configuration Menu is shown in Figure 9.
AT-8000/8POE Local Management System
Switch Tools Configuration -> Time Zone Configuration Menu
Time Zone : (GMT+8:00) Taipei
Daylight Saving : Disabled
Type Time Zone Nation or City
---- --------- ----------------------------------1 (GMT-12:00) Eniwetok,Kwajalein
2 (GMT-11:00) Midway Islands, Samoa
3 (GMT-10:00) Hawaii
4 (GMT-09:00) Alaska
5 (GMT-08:00) Pacific Time (US & Canada):Tijuana
6 (GMT-07:00) Arizona
7 (GMT-07:00) Mountain time (US & Canada)
8 (GMT-06:00) Central Time (US & Canada)
9 (GMT-06:00) Mexico City, Tegucigalpa
10 (GMT-06:00) Saskatchewan
----------------------------- <COMMAND> ----------------------------------
[N]ext Page [S]et Time Zone
[P]revious Page [Q]uit to previous menu
Command>
Figure 9. Time Zone Configuration Menu
Section I: Using the Menus Interface 45
Chapter 3: Basic Switch Parameters
b. Scroll through the list of time zones until you find one that matches
your time zone.
c. Type S to choose Set Time Zone.
The following message is prompt is displayed:
Select time zone>
d. Type the number that corresponds to the time zone you want.
If you selected a time zone that observes daylight saving time, the
following prompt is displayed:
Enable or Disable Daylight Saving (E/D)>
e. Type D to disable the daylight saving time or E to enable it.
Note
You must set the time zone in order to display the daylight saving
time option. If the time zone you previously selected is located in
DST area, you can set this anytime.
46 Section I: Using the Menus Interface
Viewing Switch Information
To view general information about the switch, perform the following
procedure:
1. From the Main Menu, type G to select General Information.
The General Information menu is shown in Figure 10.
AT-9000/24 Local Management System
Main Menu -> General Information
System up for : 24min(s), 36sec(s)
Runtime Image : Version 1.0
Boot Loader : Version 1.0
Hardware Information
Version: DRAM Size: 16MB
Fixed Baud Rate: 9600bps Flash Size: 4 MB
Administration Information
Switch Name: Marketing
Switch Location: Fourth Floor
Switch Contact: Ralph
System Address Information
MAC Address: 00:06:5H:B2:65:84
IP Address: 149.35.8.237
Subnet Mask: 255.255.255.0
Gateway: 149.35.8.1
Automatic Network Features
DHCP Mode: Disabled
AT-S84 Management Software User’s Guide
Press any key to continue...
Figure 10. General Information Menu
The General Information Menu displays the following information:
System up for
The number of hours, minutes, and seconds since the last reset or
power cycle.
Runtime Image
The version of the runtime software.
Boot Loader
The version of the boot loader software.
Section I: Using the Menus Interface 47
Chapter 3: Basic Switch Parameters
Hardware Information Section
Version
The hardware version number.
Fixed Baud Rate
The baud rate of the console port. You cannot change this parameter.
DRAM Size
The size of the DRAM, in megabytes.
Flash Size
The size of the flash memory, in megabytes.
Administration Information Section
Switch Name
The name assigned to the switch. To assign the switch a name, refer
to “Configuring System Administration Information” on page 36.
Switch Location
The location of the switch. To specify the location, refer to “Configuring
System Administration Information” on page 36.
Switch Contact
The contact person responsible for managing the switch. To specify
the name of a contact, refer to “Configuring System Administration
Information” on page 36.
System Address Information Section
MAC Address
The MAC address of the switch. You cannot change this information.
System IP Address
The IP address of the switch. Refer to “Configuring the IP Address,
Subnet Mask, and Gateway Address” on page 32 to manually assign
an IP address or “Enabling and Disabling the DHCP Client” on
page 35 to activate the DHCP client.
Subnet Mask
The subnet mask for the switch. Refer to “Configuring the IP Address,
Subnet Mask, and Gateway Address” on page 32 to manually assign a
subnet mask or “Enabling and Disabling the DHCP Client” on page 35
to activate the DHCP client.
Gateway
Default gateway IP address. Refer to “Configuring the IP Address,
Subnet Mask, and Gateway Address” on page 32 to manually assign a
gateway address or “Enabling and Disabling the DHCP Client” on
page 35 to activate the DHCP client.
48 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
Automatic Network Features Section
DHCP Mode
The status of the DHCP client on the switch. For information about
setting this parameter, refer to “Enabling and Disabling the DHCP
Client” on page 35.
2. Press any key to return to the previous menu.
Section I: Using the Menus Interface 49
Chapter 3: Basic Switch Parameters
Rebooting the Switch
This procedure reboots the switch and reloads the AT-S84 management
software from flash memory. You might reboot the device if you believe it
is experiencing a problem. Rebooting the device does not change any of
the device’s parameter settings.
To reboot the switch, perform the following procedure:
1. From the Main Menu type T to select Switch Tools.
Caution
The switch does not forward network traffic during the reboot
process. Some network traffic may be lost.
The Switch Tools Configuration Menu is shown in Figure 11.
AT-9000/24 Local Management System
Main Menu -> Switch Tools Configuration Menu
Software [U]pgrade...
[C]onfiguration File Upload/Download...
System [R]eboot
[P]ing Execution
[Q]uit to previous menu
Command>
Figure 11. Switch Tools Configuration Menu
2. From the Switch Tools Configuration Menu, type R to select System
Reboot.
50 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
The System Reboot Menu is shown in Figure 12.
AT-9000/24 Local Management System
Main Menu -> System Reboot Menu
Reboot Status: Stop
Reboot Type: Normal
---------------------- <COMMAND> ----------------------------
Set Reboot [O]ption
Start [R]eboot Process
[Q]uit to previous menu
Command>
Figure 12. System Reboot Menu
3. From the System Reboot menu, type O to select Set Reboot Option.
The following prompt is displayed:
Select reboot option (F/I/N)>
4. Type N to select Normal.
This reboot type does not change the current configuration.
Note
The F and I options are described in “Returning the AT-S84
Management Software to the Factory Default Values” on page 57.
5. Type R to select Start Reboot Process.
The following prompt is displayed:
Are you sure you want to reboot the system (Y/N)>
6. Type Y to start the reboot process or N to cancel the reboot.
The switch immediately begins to reload the AT-S84 management
software. This process takes approximately one minute to complete.
You can not manage the device during the reboot. After the reboot is
finished, you can log in again if you want to continue to manage the
device.
Section I: Using the Menus Interface 51
Chapter 3: Basic Switch Parameters
Pinging a Remote System
This procedure instructs the switch to ping a node on your network. This
procedure is useful in determining whether an active link exists between
the switch and another network device. Note the following before
performing the procedure:
The switch where you are initiating the ping must have an IP address
and subnet mask.
The device you are pinging must be a member of the Default VLAN.
This means that the port on the switch through which the node is
communicating with the switch must be an untagged or tagged
member of the Default VLAN.
To ping a network device, perform the following procedure:
1. From the Main Menu, type T to select Switch Tools.
The Switch Tools Configuration Menu is shown in Figure 11 on page
50.
2. From the Switch Tools Configuration Menu, type P to select Ping
Execution.
The Ping Execution Menu is shown in Figure 13.
AT-9000/24 Local Management System
Switch Tools Configuration -> Ping Execution
Target IP Address: 0.0.0.0
Number of Requests: 10
Timeout Value (sec): 3
================Result=================
----------------------- <COMMAND> ----------------------------Set Target [I]P Address [E]xecute Ping
Set [N]umber of Requests [S]top Ping
Set [T]imeout Value [Q]uit to previous menu
Command>
Figure 13. Ping Execution Menu
52 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
3. Type I to select Set Target IP Address.
The following prompt is displayed:
Enter new target IP address>
4. Type the IP address of the node you want the switch to ping and press
Enter.
5. Type N to select Set Number of Requests.
The following prompt is displayed:
Enter new number of requests>
6. Enter the number of ping requests you want the switch to perform. The
range is 1 to 10. The default is 10.
7. Type T to select Set Timeout Value.
The following prompt is displayed:
Enter new timeout value>
8. Enter the length of time in seconds the switch is to wait for a response
before assuming that a ping has failed. The range is 1 to 5 seconds.
The default is 3 seconds.
9. Type E to select Execute Ping.
The following prompt is displayed:
Execute ping or Clean ping data (E/C)>
10. Type E to execute the ping or C to clear previous ping data before
performing this ping.
Section I: Using the Menus Interface 53
Chapter 3: Basic Switch Parameters
AT-9000/24 Local Management System
Switch Tools Configuration -> Ping Execution
Target IP Address: 149.35.8.33
Number of Requests: 4
Timeout Value (sec): 3
================Result=================
----------------------- <COMMAND> ----------------------------Set Target [I]P Address [E]xecute Ping
Set [N]umber of Requests [S]top Ping
Set [T]imeout Value [Q]uit to previous menu
Command>
Figure 14 shows an example of the results of a ping.
No. 1 20 ms
No. 2 20 ms
No. 3 20 ms
No. 4 20 ms
Figure 14. Ping Results
11. To stop the ping, type S to select Stop Ping.
54 Section I: Using the Menus Interface
Viewing the System Log
The system log displays system-level events in the switch, such as logging
in to the management software.
To view the system log, perform the following procedure:
1. From the Main Menu, type T to select Switch Tools.
The Switch Tools Configuration Menu is shown in Figure 11 on page
50.
2. From the Switch Tools Configuration Menu, type L to select System
Log.
3. The System Log Menu is shown in Figure 15.
AT-9000/24 Local Management System
Switch Tools Configuration -> System Log Menu
AT-S84 Management Software User’s Guide
ID Date Time L Type Description
------------------------- -------------------------------------------1 08/03/2006 08:30:45 I System Switch start
2 08/03/2006 08:30:46 I Console Login from console
3 08/03/2006 08:30:47 I PCFG Port-3 link-up
4 08/03/2006 08:30:50 I IP DHCP get IP address <192.2.1.23>
5
----------------------------- <COMMAND> ----------------------------------
[C]lear the Log Entries [N]ext Page
[P]revious Page [Q]uit to previous menu
Command>
Figure 15. System Log Menu
The System Log Menu contains a table that displays the following
information:
ID
An identifying number for the event.
Date and Time
The date and time that the event occurred
Section I: Using the Menus Interface 55
Chapter 3: Basic Switch Parameters
L
Severity level of the event. The severity levels are:
(I)nformation - Useful information that you can ignore during normal
operation.
(W)arning - An issue that may require a manager’s attention.
(E)rror - Switch operation is severely impaired.
Type
The type provides more information about the event. The possible
types are:
802.1X - An 802.1X event.
CFG - Configuration event.
CLI - CLI login.
Console - A console login by a user.
IP - Change to the IP information.
PCFG - Port configuration.
PoE - PoE configuration or event.
SNTP - SNTP configuration.
STP - Spanning tree.
SwUpg - Software upgrade.
System - General system event.
Telnet - Access via Telnet.
Description
A description of the event.
4. To remove the current log entries, type L to select Clear the Log
Entries.
56 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
Returning the AT-S84 Management Software to the Factory Default Values
This procedure returns all AT-S84 management software parameters to
their default values and deletes all tagged and VLANs on the switch. The
AT-S84 management software default values are listed in Appendix A,
”AT-S84 Default Settings” on page 319.
Caution
This procedure causes the switch to reboot. The switch does not
forward network traffic during the reboot process. Some network
traffic may be lost.
To return the AT-S84 management software to the default settings,
perform the following procedure:
1. From the Main Menu, type T to select Switch Tools.
The Switch Tools Configuration Menu is shown in Figure 11 on page
50.
2. From the Switch Tools Menu, type R to select System Reboot to start
the reboot.
The System Reboot menu is shown in Figure 12 on page 51.
3. Type O to select Set Reboot Option.
The following prompt is displayed:
Select reboot option (F/I/N)>
4. Type F or I to select one of the following:
F (Factory Default)
Resets all switch parameters to the factory default settings, including
IP address, subnet mask, and gateway address.
I (Reset to Defaults Except IP Address)
Resets all switch parameters to the factory default settings, but retains
the IP address, subnet mask, and gateway settings. If the DHCP client
is enabled, it remains enabled after this reset.
Note
Option N is described in “Rebooting the Switch” on page 50.
Section I: Using the Menus Interface 57
Chapter 3: Basic Switch Parameters
5. Type R to select Start Reboot Process.
The following prompt is displayed:
Are you sure you want to reboot the system (Y/N)>
6. Type Y to start the reboot process.
The switch returns its operating parameters to the default values and
begins to reload the AT-S84 management software. This process
takes approximately one minute to complete. You can not manage the
device during the reboot. After the reboot is finished, you can log in
again if you want to continue to manage the device.
58 Section I: Using the Menus Interface
Chapter 4
SNMP
This chapter contains the following sections:
“SNMP Overview” on page 60
“Enabling or Disabling the SNMP Agent” on page 62
“Enabling Authentication Traps” on page 63
“Changing the Default SNMP Community Names” on page 64
“Working with Trap Receivers” on page 65
Section I: Using the Menus Interface 59
Chapter 4: SNMP
SNMP Overview
The Simple Network Management Program (SNMP) is another way for
you to manage the switch. This type of management involves viewing and
changing the management information base (MIB) objects on the device
using an SNMP application program. The AT-S84 management software
supports SNMPv1 and SNMPv2c which is always disabled on the switch.
The procedures in this chapter show you how to create and manage
SNMPv1 and SNMPv2c community strings through which your SNMP
application program at your management workstation can access the
switch’s MIB objects.
To manage a switch using an SNMP application program, you must do the
following:
Activate SNMP management on the switch. The default setting for
SNMP management is disabled. The procedure for this can be found
in “Enabling or Disabling the SNMP Agent” on page 62.
Load the Allied Telesyn MIBs for the switch onto your management
workstation containing the SNMP application program. The MIBs are
available from the Allied Telesyn web site at www.alliedtelesyn.com.
To manage a switch using SNMP, you need to know the IP address of the
switch and at least one of the switch’s community strings. A community
string is a string of alphanumeric characters that gives you access to the
switch.
A community string has several attributes that you can use to control who
can use the string and what the string will allow a network manager to do
on the switch. The community string attributes are defined below:
Community String Name
The SNMP community string is similar to a user ID or password, which
allows access to a network device’s statistics. You must assign a name to
the community string. The name can be from one to eight alphanumeric
characters. Spaces are allowed.
Access Mode
This defines what the community string will allow a network manager to
do. There are two access modes: Read and Read/Write. A community
string with an access mode of Read can only be used to view but not
change the MIB objects on a switch. A community string with a Read/Write
access can be used to both view the MIB objects and change them.
Status
A community string can be enabled, disabled, or deleted. When disabled,
no one can use it to access the switch. You might disable a community
string if you suspect someone is using it for unauthorized access to the
60 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
device. You can enable it again later, or even delete it. When a community
string is enabled, then it is available for use.
Trap Receivers
A trap is a signal sent to one or more management workstations by the
switch to indicate the occurrence of a particular operating event on the
device. There are numerous operating events that can trigger a trap. For
instance, resetting the switch or the failure of a cooling fan are two
examples of occurrences that cause a switch to send a trap to the
management workstations. You can use traps to monitor activities on the
switch.
Trap receivers are the devices, typically management workstations or
servers, that you want to receive the traps sent by the switch. You specify
the trap receivers by their IP addresses. You assign the IP addresses to
the community strings.
Each community string can have up to four trap IP addresses.
It does not matter which community strings you assign your trap receivers.
When the switch sends a trap, it looks at all the community strings and
sends the trap to all trap receivers on all community strings. This is true
even for community strings that have a access mode of only Read.
Default SNMP
Community
Strings
If you are not interested in receiving traps, then you do not need to enter
any IP addresses of trap receivers.
The AT-S84 management software provides two default community
strings: SNMP Read Community and SNMP Write Community. The read
community string is called “public” and has an access mode of just Read.
The write community string is named “private” and has an access mode of
write only.
Section I: Using the Menus Interface 61
Chapter 4: SNMP
Enabling or Disabling the SNMP Agent
To disable or enable the SNMP agent, perform the following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page
32.
2. From the Basic Switch Configuration Menu, type U to select User
Interface Configuration.
The User Interface Configuration Menu is shown in Figure 7 on page
38.
3. From the User Interface Configuration Menu, type S to select Enable/
Disable SNMP Agent.
The following prompt is displayed:
Enable or Disable SNMP agent (E/D)>
4. Type D to disable the SNMP agent or E to enable it. The default is
Enabled.
62 Section I: Using the Menus Interface
Enabling Authentication Traps
To enable SNMP authentication traps, perform the following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page 32.
2. From the Basic Switch Configuration menu, type N to select SNMP
Configuration.
The SNMP Configuration menu is shown in Figure 16.
AT-9000/24 Local Management System
Basic Switch Configuration -> SNMP Configuration Menu
SNMP Read Community: public
SNMP Write Community: private
Trap Authentication: Enabled
AT-S84 Management Software User’s Guide
SNMP Trap Receivers:
No. Status IP Address Community
--- ----- -------------- -----------------------------------1 Deleted <empty> <empty>
2 Enabled 149.35.8.42 Monitor
3 Deleted <empty> <empty>
4 Deleted <empty> <empty>
-----------------------------<COMMAND>-------------------------------------Set SNMP [R]ead Community [A]dd SNMP Trap Receiver
set SNMP [W]rite Community [D]elete SNMP Trap Receiver
[M]odify SNMP Trap Receiver [E]nable/Disable Authentication Trap
Enable/Disable SNMP [T]rap Receiver [Q]uit to previous menu
Command>
Figure 16. SNMP Configuration Menu
3. Type E to select Enable/Disable Authentication Trap.
The following prompt is displayed:
Enable or Disable SNMP Authentication Trap (E/D)>
4. Type E to enable SNMP or D to disable SNMP. The default is Enabled.
Section I: Using the Menus Interface 63
Chapter 4: SNMP
Changing the Default SNMP Community Names
To change the names of the default SNMP communities, perform the
following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page
32.
2. From the Basic Switch Configuration menu, type N to select SNMP
Configuration.
The SNMP Configuration menu is shown in Figure 16 on page 63.
3. Type R to select Set SNMP Read Community.
The following prompt is displayed:
Enter read community name>
4. Type the name of the read community. The default is “public.”
5. Type W to select Set SNMP Write Community.
The following prompt is displayed:
Enter write community name>
6. Type the name of the write community. The default is “private.”
64 Section I: Using the Menus Interface
Working with Trap Receivers
This section contains procedures for working with SNMP trap receivers
and includes the following topics:
“Adding a Trap Receiver,” next
“Enabling or Disabling Trap Receivers” on page 65
“Modifying a Trap Receiver” on page 66
“Deleting a Trap Receiver” on page 67
AT-S84 Management Software User’s Guide
Adding a Trap
Receiver
You must add a trap receiver before you can enable it.
To add a trap receiver, perform the following procedure.
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page 32.
2. From the Basic Switch Configuration menu, type N to select SNMP
Configuration.
The SNMP Configuration menu is shown in Figure 16 on page 63.
3. Type A to select Add SNMP Trap Receiver.
The following prompt is displayed:
Add SNMP trap receivers->Enter entry number>
4. Enter 1 through 4 for the trap receiver you want to configure.
The following prompt is displayed:
Enter IP address for trap receiver>
5. Enter the IP address of the workstation that you want to receive traps.
The following prompt is displayed:
Enter community name for trap receiver>
6. Enter a name for the workstation that you want to receive traps.
A new trap receiver is automatically enabled.
Enabling or
Disabling Trap
You can disable a trap receiver or enable one that was previously
disabled. To enable or disable a trap receiver, perform the following
procedure:
Receivers
1. From the Main Menu, type B to select Basic Switch Configuration.
Section I: Using the Menus Interface 65
Chapter 4: SNMP
The Basic Switch Configuration Menu is shown in Figure 4 on page
32.
2. From the Basic Switch Configuration menu, type N to select SNMP
Configuration.
The SNMP Configuration menu is shown in Figure 16 on page 63.
3. Type T to select Enable/Disable SNMP Trap Receiver.
The following prompt is displayed:
Set SNMP trap receivers status->Enter entry number>
4. Enter the number of the trap receiver you want to enable or disable.
The following prompt is displayed:
Set SNMP trap receivers status->Enter entry number>
5. Enter the number for the trap you want to enable or disable.
Modifying a Trap
Receiver
The following prompt is displayed:
Enable or Disable SNMP Trap Receiver (E/D)>
Note
The trap receiver must be one whose status is not “deleted.”
6. Type E to enable the trap receiver or D for disable to disable the trap
receiver.
You can also delete a trap receiver, as described in “Deleting a Trap
Receiver” on page 67
To modify a trap receiver, perform the following procedure.
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page
32.
2. From the Basic Switch Configuration menu, type N to select SNMP
Configuration.
The SNMP Configuration menu is shown in Figure 16 on page 63.
3. Type M to select Modify SNMP Trap Receiver.
The following prompt is displayed:
66 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
Modify SNMP trap receivers->Enter entry number>
Note
The trap receiver must be one whose status is not “deleted.”
4. Enter the number for the trap you want to modify.
The following prompt is displayed:
Modify trap receiver entry number (I/C/B)>
The options are:
I - Modify the IP address of the trap receiver. To modify only the IP
address, type I and follow the prompts.
C - Modify the community name of the trap receiver. To modify only the
community name, type C and follow the prompts.
B - Modify both the IP address and community name of the trap
receiver. To modify both the IP address and the community name, type
B and follow the prompts.
Deleting a Trap
Receiver
When you delete a trap receiver, all the settings are removed from the
entry in the table. Instead of deleting a trap receiver, you may want to
disable it, as described in “Enabling or Disabling Trap Receivers” on
page 65.
To delete a trap receiver, perform the following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page 32.
2. From the Basic Switch Configuration menu, type N to select SNMP
Configuration.
The SNMP Configuration menu is shown in Figure 16 on page 63.
3. Type D to select Delete SNMP Trap Receiver.
The following prompt is displayed:
Delete SNMP trap receivers->Enter entry number>
4. Type the number of the entry you want to delete.
Section I: Using the Menus Interface 67
Chapter 4: SNMP
68 Section I: Using the Menus Interface
Chapter 5
Port Configuration
This chapter contains the procedures for viewing and adjusting the
parameter settings for the ports on the switch. This chapter contains the
following sections:
“Displaying the Port Parameters” on page 70
“Enabling or Disabling a Port” on page 72
“Setting a Port’s Speed and Duplex Mode” on page 73
“Changing the Flow Control Setting” on page 75
“Changing the Back Pressure Setting” on page 76
“Displaying Port Statistics” on page 77
Section I: Using the Menus Interface 69
Chapter 5: Port Configuration
Displaying the Port Parameters
To display the parameter settings for the ports on the switch, perform the
following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page
32.
2. From the Basic Switch Configuration Menu, type P to select Port
Configuration.
The Port Configuration Menu is shown in Figure 17.
AT-9000/24 Local Management System
Basic Switch Configuration -> Port Configuration Menu
Back Pressure: Disabled
Port Trunk Type Link Status Mode Flow Ctrl
---- ----- ------ ---- ------ ------------ --------1 --- 1000TX Up Enabled Auto Enabled
2 --- 1000TX Up Enabled Auto Enabled
3 --- 1000TX Up Enabled Auto Enabled
4 --- 1000TX Up Enabled Auto Enabled
5 --- 1000TX Up Enabled Auto Enabled
6 --- 1000TX Down Enabled Auto Enabled
7 --- 1000TX Up Enabled Auto Enabled
8 --- 1000TX Down Enabled Auto Enabled
9 --- 1000TX Up Enabled Auto Enabled
10 --- 1000TX Up Enabled Auto Enabled
11 --- 1000TX Up Enabled Auto Enabled
12 --- 1000TX Up Enabled Auto Enabled
----------------------- <COMMAND> ------------------------------------
[N]ext Page Set [S]tatus Set [F]low Control
[P]revious Page Set [M]ode Set [B]ack Pressure
[Q]uit to previous menu
Command>
Figure 17. Port Configuration Menu
70 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
The Port Configuration Menu displays the following columns of
information about the status of the first 12 ports on the switch:
Port
The port number.
Trunk
The trunk group number. This column contains the number of the port
trunk if the port is a member of a trunk. To configure a trunk, refer to
Chapter 6, “Port Trunking” on page 81.
Type
The port type. The type for an RJ-45 copper port is 10/100/1000BaseT.
Link
The status of the link between the port and the end node connected to
the port. The possible values are:
Up - A link exists between the port and the end node.
Down - The port has not established a link with an end node.
Status
The current operating status of the port. The possible values are:
Enabled - The port is able to send and receive Ethernet frames. This is
the default setting for all ports on the switch.
Disabled - The port has been manually disabled.
To change a port’s status, see “Enabling or Disabling a Port” on
page 72.
Mode
The port’s speed and duplex mode setting. For information about the
modes or to change a port’s speed and duplex mode setting, see
“Setting a Port’s Speed and Duplex Mode” on page 73.
Flow Ctrl
Whether flow control is enabled on the port. Flow control is enabled by
default. To disable flow control, refer to “Changing the Flow Control
Setting” on page 75.
3. To view information for the rest of the ports, type N for Next.
Section I: Using the Menus Interface 71
Chapter 5: Port Configuration
Enabling or Disabling a Port
This procedure enables or disables a port. You may want to disable a port
and prevent packets from being forwarded if a problem occurs with the
node or cable connected to the port. After the problem has been fixed, you
can enable the port to resume normal operation. You can also disable an
unused port to secure it from unauthorized connections. The default
setting for a port is enabled.
To change the port’s status, perform the following procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page 32
2. From the Basic Switch Configuration Menu, type P to select Port
Configuration.
The Port Configuration Menu is shown in Figure 17 on page 70.
3. Type S to select Set Status.
The following prompt is displayed:
Set Status->Enter port number>
4. Enter the number of the port you want to enable or disable. You can
configure only one port at a time.
The following prompt is displayed:
Enable or Disable port n (E/D)>
5. Type E to enable the port or D to disable it. The default is enabled. A
disabled port immediately stops forwarding all ingress and egress
traffic until you enable it again.
The display is refreshed to show the port’s new status.
72 Section I: Using the Menus Interface
Setting a Port’s Speed and Duplex Mode
To change a port’s speed or duplex mode, perform the following
procedure:
1. From the Main Menu, type B to select Basic Switch Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page 32
2. From the Basic Switch Configuration Menu, type P to select Port
Configuration.
The Port Configuration Menu is shown in Figure 17 on page 70.
3. Type M to select Set Mode.
The following prompt is displayed:
Set Mode -> Enter port number >
AT-S84 Management Software User’s Guide
4. Enter the number of the port whose speed or duplex mode you want to
change. You can configure only one port at a time.
The following prompt is displayed:
Enter new mode for port n (a/h/H/F/f/T)>
5. Enter the letter that corresponds to the desired speed and duplex
mode setting for the port. The port settings are:
a - Auto: The port uses Auto-Negotiation to set its speed and duplex
mode. This is the default setting for all ports.
h - 10 Mbps, half-duplex
H - 100 Mbps, half-duplex
f - 10 Mbps, full-duplex
F - 100 Mbps, full-duplex
T - 1000 Mbps, full-duplex
When you select a setting, note the following:
When a twisted pair port on the switch is set to Auto-Negotiation,
the default setting, the end node should also be using AutoNegotiation to prevent a duplex mode mismatch. A switch port
using Auto-Negotiation defaults to half-duplex if it detects that the
end node is not using Auto-Negotiation. This can result in a
mismatch if the end node is operating at a fixed duplex mode of
full-duplex. To avoid this problem when connecting an end node
Section I: Using the Menus Interface 73
Chapter 5: Port Configuration
with a fixed duplex mode of full-duplex to a switch port, disable
Auto-Negotiation on the port and set the port’s speed and duplex
mode manually.
74 Section I: Using the Menus Interface
Changing the Flow Control Setting
A switch port uses flow control to control the flow of ingress packets from
its end node. Flow control applies to ports operating in full-duplex mode. A
switch port uses flow control to control the flow of ingress packets from its
end node. A port using flow control issues a special frame, referred to as a
PAUSE frame, as specified in the IEEE 802.3x standard, to stop the
transmission of data from an end node. When a port needs to stop an end
node from transmitting data, it issues this frame. The frame instructs the
end node to cease transmission. The port continues to issue PAUSE
frames until it is ready again to receive data from the end node.
The default setting for flow control on a switch port is disabled.
To change the flow control setting on a port, perform the following
procedure:
1. From the Main Menu, type B to select Basic Configuration.
AT-S84 Management Software User’s Guide
The Basic Switch Configuration Menu is shown in Figure 4 on page 32
2. From the Basic Switch Configuration Menu, type P to select Port
Configuration.
The Port Configuration Menu is shown in Figure 17 on page 70.
3. Type F to select Flow Control.
The following prompt is displayed:
Set Flow Control -> Enter port number >
4. Enter the port number whose flow control setting you want to change.
You can configure only one port at a time.
The following prompt is displayed:
Enable or Disable flow control for port n (E/D)>
5. Type E to enable flow control or D to disable it. The default is enabled.
The display is refreshed to show the port’s new flow control setting.
Section I: Using the Menus Interface 75
Chapter 5: Port Configuration
Changing the Back Pressure Setting
Back pressure performs much the same function as flow control. Both are
used by a port to control the flow of ingress packets. Flow control applies
to ports operating in full-duplex; back pressure applies to ports operating
in half-duplex mode.
When a twisted pair port on the switch operating in half-duplex mode
needs to stop an end node from transmitting data, it forces a collision. A
collision on an Ethernet network occurs when two end nodes attempt to
transmit data using the same data link at the same time. A collision causes
the end nodes to stop sending data.
When a switch port needs to stop a half-duplex end node from transmitting
data, it forces a collision on the data link, which stops the end node. After
the switch is ready to receive data again, the switch stops forcing
collisions. This is called back pressure.
To apply back pressure to a port, perform the following procedure:
1. From the Main Menu, type B to select Basic Configuration.
The Basic Switch Configuration Menu is shown in Figure 4 on page 32
2. From the Basic Switch Configuration Menu, type P to select Port
Configuration.
The Port Configuration Menu is shown in Figure 17 on page 70.
3. Type B to select Back Pressure.
The following prompt is displayed:
Enable or Disable all link up ports (E/D)>
4. Type E to enable back pressure or D to disable it. The default is
disabled.
76 Section I: Using the Menus Interface
Displaying Port Statistics
To display statistics about a port, perform the following procedure:
1. From the Main Menu, select Statistics.
The Statistics menu is shown in Figure 18.
AT-9000/24 Local Management System
Main Menu -> Statistics Menu
Port: 1 Elapsed Time Since System Up: 003.23.27.17
<Counter Name <Total <Avg./s>
Total RX Bytes 1074684 275
Total RX Pkts 11092 2
Good Broadcast 8842 2
Good Multicast 2235 0
CRC/Align Errors 0 0
Undersize Pkts 0 0
Oversize Pkts 0 0
Fragments 0 0
Jabbers 0 0
Collisions 0 0
64-Byte Pkts 771 0
65-127 Pkts 9521 2
128-255 Pkts 588 0
256-511 Pkts 212 0
512-1023 Pkts 0 0
1024-1522 Pkts 0 0
----------------------- <COMMAND> -----------------------------------[S]elect/[N]ext/[P]rev. Port Since [R]eset S[t]op Refresh [Q]uit
AT-S84 Management Software User’s Guide
Command>
Figure 18. Statistics Menu
The statistics for port 1 are displayed in a table that contains the
following columns of information:
Total
The total count for this statistic.
Avg/s
The average count of that statistic per second.
The table contains the following items of information:
Total RX Bytes
Number of bytes received on the port.
Total RX Pkts
Number of packets received on the port.
Section I: Using the Menus Interface 77
Chapter 5: Port Configuration
Good Broadcast
Number of valid broadcast packets received on the port.
Good Multicast
Number of valid multicast packets received on the port.
CRC/Align Errors
Number of packets with a cyclic redundancy check (CRC) error but
with the proper length (64-1518 bytes) received on the port.
Undersize Pkts
Number of packets that were less than the minimum length specified
by IEEE 902.3 (64 bytes including the CRC) received on the port.
Oversize Pkts
Number of packets that exceeded the maximum length specified by
IEEE 902.3 (1518 bytes including the CRC) received on the port.
Fragments
Number of undersized packets, packets with alignment errors, and
packets with FCS errors (CRC errors) received on the port.
Jabbers
Number of electrical signal errors detected on the port.
Collisions
Number of packet collisions on the port.
64-Byte Pkts
Number of 64-byte packets sent or received by the port. The minimum
length of an Ethernet packet is 64 bytes.
65-127 Pkts
Number of 65- to 127-byte packets sent or received by the port.
128-255 Pkts
Number of 128- to 255-byte packets sent or received by the port.
256-511 Pkts
Number of 256- to 511-byte packets sent or received by the port.
512-1023 Pkts
Number of 512- to 1023-byte packets sent or received by the port.
1024-1522 Pkts
Number of 1024- to 1522-byte packets sent or received by the port.
The maximum length of an Ethernet packet is 1518 bytes.
The statistics are refreshed every 30 seconds,
2. To select a specific port:
a. Type S to select Select.
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The following prompt is displayed:
Select port number>
b. Type the number of the port whose statistics you want to view.
3. Type N for Next or P for Previous to move between ports.
4. To view the statistics for a particular port since the switch was last
reset, select the port and then type R for Since Reset.
5. To stop refreshing the statistics, type T for Stop Refresh.
Section I: Using the Menus Interface 79
Chapter 5: Port Configuration
80 Section I: Using the Menus Interface
Chapter 6
Port Trunking
This chapter provides information and procedures for creating a port trunk
and contains the following sections:
“Port Trunking Overview” on page 82
“LACP Trunks” on page 84
“Setting Up a Port Trunk” on page 88
“Setting Up an LACP Trunk” on page 92
Section I: Using the Menus Interface 81
Chapter 6: Port Trunking
Port Trunking Overview
Port trunking is an economical way for you to increase the bandwidth
between two Ethernet switches. A port trunk is 2 to 8 ports that have been
grouped together to function as one logical path. A port trunk increases
the bandwidth between switches and is useful in situations where a single
physical data link between switches is insufficient to handle the traffic
load.
A port trunk always sends packets from a particular source to a particular
destination over the same link within the trunk. A single link is designated
for flooding broadcasts and packets of unknown destination.
Static Port Trunk
Overview
A static port trunk consists of two to eight ports on the switch that function
as a single virtual link between the switch and another device. A static port
trunk improves performance by distributing the traffic across multiple ports
between the devices and enhances reliability by reducing the reliance on a
single physical link.
A static trunk is easy to configure. You designate the ports on the switch
that are to be in the trunk and the management software on the switch
automatically groups them together.
The example in Figure 19 illustrates a static port trunk of four links
between two AT-9000/24 Gigabit Ethernet switches.
9111315
PORT ACTIVITY
1000
10/100
LINK ACT
SFP
23R
17 19 21R
21 22
23 24
PORT ACTIVITY
1000
10/100
LINK ACT
SFP
23R
17 19 21R
21 22
23 24
793
793
AT-9000/24
24 Port Gigabit Ethernet Switch
1357
2 4 6 8 10 12 14 16 18 20 22R24R
POWER
AT-9000/24
24 Port Gigabit Ethernet Switch
1357
2 4 6 8 10 12 14 16 18 20 22R24R
POWER
9111315
Figure 19. Static Port Trunk Example
Network equipment vendors tend to employ different techniques to
implement static trunks. Consequently, a static trunk on one device might
not be compatible with the same feature on a device from a different
manufacturer. For this reason static trunks are typically employed only
between devices from the same vendor. That is not to say that an Allied
Telesis layer 2 managed switch cannot form a static trunk with a device
from another manufacturer; but there is the possibility that the
implementations of static trunking on the two devices might not be
82 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
compatible.
Also note that a static trunk does not provide for redundancy or link
backup. If a port in a static trunk loses its link, the trunk’s total bandwidth is
diminished. Though the traffic carried by the lost link is shifted to one of the
remaining ports in the trunk, the bandwidth remains reduced until the lost
link is reestablished or you reconfigure the trunk by adding another port to
it.
Port Trunking
Guidelines
Observe the following guidelines when you create a port trunk:
A port trunk can consist of up to 8 ports, but must have a minimum of 2
ports.
The switch can support up to 4 trunks at a time.
A port can belong to only one trunk at a time.
The speed, duplex mode, and flow control settings must be the same
on all the ports in a trunk.
The ports of a trunk must be members of the same VLAN. A port trunk
cannot consist of ports from different VLANs.
The ports of a trunk do not have to be consecutive.
When you cable a trunk, the order of the connection should be
maintained on both nodes. The lowest numbered port in a trunk on the
switch should be connected to the lowest numbered port of the trunk
on the other device, the next lowest numbered port on the switch
should be connected to the next lowest numbered port on the other
device, and so on.
For example, assume that you are connecting a trunk between two
AT-9000/24 Gigabit Ethernet switches. On the first switch, you select
ports 1 through 4 for a trunk. On the second switch, you select ports 5
through 8. To maintain the order of the port connections, connect port
1 on the first switch to port 5 on the second switch, connect port 2 to
port 6, and so on.
To avoid compatibility problems, Allied Telesyn recommends creating
a port trunk only between AT-9000/24 Gigabit Ethernet switches. A
port trunk between an AT-9000/24 Gigabit Ethernet switch and a
device from another manufacturer might result in undesirable trunk
behavior.
Section I: Using the Menus Interface 83
Chapter 6: Port Trunking
LACP Trunks
An LACP (Link Aggregation Control Protocol) trunk is another type of port
trunk. It performs the same function as a static trunk. It increases the
bandwidth between two network devices by distributing the traffic load
over multiple physical links.
The advantage of an LACP trunk over a static port trunk is its flexibility.
While implementations of static trunking tend to be vendor specific, the
AT-S84 implementation of LACP is compliant with the IEEE 802.3ad
standard. This makes it interoperable with equipment from other vendors
that also comply with the standard. Therefore, you can create a trunk
between an Allied Telesyn device and networking devices from other
manufacturers.
Another advantage is that ports in an LACP trunk can function in a
standby mode. This adds redundancy and resiliency to the trunk. If a link
in a static trunk goes down, the overall bandwidth of the trunk is reduced
and restoring it requires reestablishing the link or manually modifying the
trunk by adding another port to it. In contrast, an LACP trunk can activate
ports in a standby mode when an active link fails. The automatic activation
of standby ports allows the switch to maintain the maximum possible
bandwidth of the trunk.
LACP Trunk
Status
For example, assume you create an LACP trunk of ports 11 to 18 on a
switch and the switch is using ports 11 to 16 as the active ports and ports
17 and 18 as reserve. If an active port loses its link, the switch
automatically activates one of the two reserve ports to maintain maximum
bandwidth of the trunk. Figure 20 illustrates this example.
AT-9000/24
24 Port Gigabit Ethernet Switch
1357
2 4 6 8 10 12 14 16 18 20 22R24R
POWER
9111315
PORT ACTIVITY
1000
10/100
LINK ACT
SFP
23R
17 19 21R
21 22
23 24
Reserve Ports 17, 18
793
Active Ports 11-16
AT-9000/24
24 Port Gigabit Ethernet Switch
1357
2 4 6 8 10 12 14 16 18 20 22R24R
POWER
9111315
PORT ACTIVITY
1000
10/100
LINK ACT
SFP
23R
17 19 21R
21 22
23 24
793
Figure 20. LACP Trunk Example
The AT-9000/24 Gigabit Ethernet switch can have up to four trunks. A
maximum of eight ports of each trunk can be assigned by the switch
administrator. You can configure each trunk’s status as Active, Passive,
Manual, or Disabled.
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When a trunk is created, its default status is Disabled. This means that the
trunk does not pass network traffic or send/receive LACP data units
(LACPDU) until the trunk status is changed accordingly.
When a trunk is set to Active status, the trunk ports are all available as part
of the active LACP trunk. The trunk ports of an active trunk will all send
and receive LACPDUs. A minimum number of trunk ports determined by
the bandwidth requirements of the network traffic will pass network traffic.
Additional ports within an active trunk will dynamically be added or deleted
by the LACP feature depending on the increase or decrease of the
network traffic.
When a trunk is set to Passive status, the trunk ports are available to be
activated by their link partners. If the trunk receives LACP data unit
packets from an Active link partner, it automatically transitions to an Active
status. The trunk ports will not transmit LACP data units unless the link
partners are in the Active status.
A trunk set to Manual status is effectively a static trunk and has none of the
benefits of the LACP feature. The trunk ports of an active trunk will not
send or receive LACPDUs. The switch administrator must manually add or
delete trunk ports from a trunk.
LACP Port
Priority
Parameter
The switch uses this parameter to determine which ports are to be active
and which are to be in the standby mode in situations where the number of
ports in the aggregate trunk exceeds the highest allowed number of active
ports. This parameter can be adjusted on each port and is a number from
1 to 255. The lower the number, the higher the priority. Ports with the
highest priorities are designated as the active ports in an aggregate trunk.
For example, if both 802.3ad-compliant devices support up to four active
ports and there are a total of eight ports in the trunk, the four ports with the
lowest priority settings are designated as the active ports, and the others
are placed in standby mode. If an active link goes down on a active port,
the standby port with the highest priority is automatically activated to take
its place.
The default value of a port’s priority number is equal to 1.
The selection of the active links in an aggregate trunk is dynamic. It
changes as links are added, removed, lost or reestablished. For example,
if an active port loses its link and is replaced by another port in the standby
mode, the reestablishment of the link on the originally active port causes it
to return to the active state by virtue of its having a higher priority, while the
port that replaced it is returned to the standby mode.
In the unusual event that you set this parameter to the same value for
some or all of the ports of an aggregate trunk, the selection of active ports
is based on port numbering. The lower the port number, the higher the
priority.
Section I: Using the Menus Interface 85
Chapter 6: Port Trunking
Two conditions must be met in order for a port that is a member of an
aggregate trunk to function in the standby mode. First, the number of ports
in the trunk must exceed the highest allowed number of active ports and,
second, the port must be receiving LACPDU packets from the other
device. A port functioning in the standby mode does not forward network
traffic, but it does continue to send LACPDU packets. If a port that is part
of a trunk group does not receive LACPDU packets, it functions as a
normal Ethernet port and forwards network packets along with LACPDU
packets.
LACP Trunk
Guidelines
Following are the guidelines for creating aggregators:
LACP must be activated on both the switch and the other device.
The other device must be 802.3ad-compliant.
The AT-9000/24 Gigabit Ethernet switch supports up to eight active
ports in a trunk group at a time.
The switch supports a maximum of four trunks.
The ports of a trunk group must be of the same medium type: all
twisted pair ports or all fiber optic ports.
The ports of a trunk can be consecutive (for example ports 5-9) or
nonconsecutive (for example, ports 4, 8, 11, 20).
A port can belong to only one trunk group at a time.
The ports of an trunk group must be untagged members of the same
VLAN.
An LACP trunk does not forward VLAN ID information.
10/100Base-TX twisted pair ports must be set to Auto-Negotiation or
100 Mbps, full-duplex mode. LACP trunking is not supported in halfduplex mode.
100Base-FX fiber optic ports must be set to full-duplex mode.
You can create a trunk group that includes transceivers with
1000Base-X fiber optic ports.
Only those ports that are members of a trunk group transmit LACPDU
packets.
A port that is a member of a trunk group functions as part of an
aggregate trunk only if it receives LACPDU packets from the remote
device. If it does not receive LACPDU packets, it functions as a regular
Ethernet port, forwarding network traffic while also continuing to
transmit LACPDU packets.
The port with the highest priority in a trunk group carries broadcast
packets and packets with an unknown destination. For background
information, refer to “LACP Port Priority Parameter” on page 85.
Prior to creating a trunk group between an AT-9000/24 Gigabit
Ethernet switch and another vendor’s device, refer to the vendor’s
documentation to determine the maximum number of active ports the
86 Section I: Using the Menus Interface
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device can support in a trunk. If the number is less than eight, the
maximum number for the AT-9000/24 Gigabit Ethernet switch, you
should probably assign a higher system LACP priority to the other
vendor’s switch. If it is more than eight, assign the higher priority to the
AT-9000/24 Gigabit Ethernet switch. This can avoid a possible conflict
between the devices if some ports are placed in the standby mode
when the devices create the trunk. For background information, refer
to “LACP Port Priority Parameter” on page 85.
LACPDU packets are transmitted as untagged packets.
Section I: Using the Menus Interface 87
Chapter 6: Port Trunking
Setting Up a Port Trunk
This section contains the following procedures for working with port trunks:
“Creating a Port Trunk,” next
“Modifying a Port Trunk” on page 90
“Enabling or Disabling a Port Trunk” on page 91
Creating a Port
Trunk
This procedure explains how to create a port trunk.
Caution
Do not connect the cables to the ports on the switches until after you
have configured the trunk with the management software.
Connecting the cables before configuring the software creates a
loop in your network topology, which can result in broadcast storms
and poor network performance.
To create a port trunk, perform the following procedure:
1. From the Main Menu, type A to select Advanced Switch
Configuration.
The Advanced Switch Configuration Menu is shown in Figure 21.
AT-9000/24 Local Management System
Main Menu -> Advanced Switch Configuration Menu
[V]LAN Management
[T]runk Configuration
[I]GMP Snooping Configuration
Quality of [S]ervice Configuration
Port [M]irroring Configuration
802.x[X] Port Based Access Control Configuration
[Q]uit to previous menu
Command>
Figure 21. Advanced Switch Configuration Menu
2. From the Advanced Switch Configuration Menu, type T to select
Trunk Configuration.
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AT-S84 Management Software User’s Guide
The Trunk Configuration Menu is shown in Figure 22.
AT-9000/24 Local Management System
Advanced Switch Configuration -> Trunk Configuration Menu
Group Status Port Members Trunk ID
------- -------------- --------------------- ---------1 Disabled 1
2 Disabled 2
3 Disabled 3
4 Disabled 4
----------------------- <COMMAND> -----------------------------
[A]dd Trunk Member LACP [G]roup Status
[R]emove Trunk Member Set P[o]rt Priority
[S]et Trunk Status [Q]uit to previous menu
Command>
Figure 22. Trunk Configuration Menu
3. To add a trunk member, type A to select Add Trunk Member.
The following prompt is displayed:
Enter trunk group number>
4. Select a trunk group number from 1 to 4 and press Enter.
The following prompt is displayed:
Enter port members (from 1 to 24, up to 8 ports) for
trunk
n
>
5. Enter the ports you want to include in the trunk and press Enter.
You can specify the ports individually separated by commas (for
example, 1,2,5), as a range of ports separated by a hyphen (for
example, 2-4), or both (for example, 1,3, 12-16).
6. To set the trunk status, type S to select Set Trunk Status.
The following prompt is displayed:
Enter trunk group number>
7. Type the trunk group number and press Enter.
The following prompt is displayed:
Set trunk group n status (A/P/M/D)>
Section I: Using the Menus Interface 89
Chapter 6: Port Trunking
8. Type M to select Manual Trunk for a basic trunk without LACP
handling.
The A and P options apply to LACP trunks. See “Setting Up an LACP
Trunk” on page 92 for more information.
The trunk is now operational on the switch.
9. Configure the port trunk on the other switch and connect the cables.
Modifying a Port
Trunk
This procedure adds and removes ports from a port trunk.
Note
Disconnect the cables from the ports of the trunk on the switch
before modifying it. Adding or removing ports from a trunk without
first disconnecting the cables can create loops in your network
topology, which can cause broadcast storms and poor network
performance.
To add or remove ports from a trunk, perform the following procedure:
1. From the Main Menu, type A to select Advanced Switch
Configuration.
The Advanced Switch Configuration Menu is shown in Figure 21 on
page 88.
2. From the Advanced Switch Configuration Menu, type T to select
Trunk Configuration.
The Trunk Configuration Menu is shown in Figure 22 on page 89.
3. To add ports to a port trunk, type A to select Add Trunk Member. To
remove ports, type R to select Remove Trunk Member.
The following prompt is displayed:
Enter trunk group number>
4. Type the number of the trunk group you want to modify and press
Enter.
The following prompt is displayed:
Enter port members (up to 8 ports) for trunk n>
5. Enter the ports you want to add or remove from the trunk and press
Enter.
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You can specify the ports individually, separated by commas (for
example, 1,2,5), as a range of ports separated by a hyphen (for
example, 2-4), or both (for example, 1,3, 6-8).
6. Modify the port trunk on the other switch and reconnect the cables.
Enabling or
Disabling a Port
Trunk
This procedure enables and disables a port trunk. Note the following
before performing this procedure:
Do not enable a port trunk until after you have configured the trunk on
both switches.
Do not connect the cables to the ports on the switches until after you
have configured and enabled the trunk on both switches.
Note
If you are disabling a port trunk, be sure to first disconnect all cables
from the ports of the trunk. Leaving the cables connected can create
loops in your network topology because the ports of a disabled port
trunk function as normal network ports, forwarding individual
network traffic.
To enable or disable a port trunk, perform the following procedure:
1. From the Main Menu, type A to select Advanced Switch
Configuration.
The Advanced Switch Configuration Menu is shown in Figure 21 on
page 88.
2. From the Advanced Switch Configuration Menu, type T to select Trunk
Configuration.
The Trunk Configuration Menu is shown in Figure 22 on page 89.
3. From the Trunk Configuration Menu, type S to select Set Trunk
Status.
The following prompt is displayed:
Enter trunk group number>
4. Type the number of the trunk group you want to enable or disable and
press Enter.
The following prompt is displayed:
Set trunk group n status (A/P/M/D)>
5. Type M to enable a manual trunk, or D to disable the trunk.
Section I: Using the Menus Interface 91
Chapter 6: Port Trunking
Setting Up an LACP Trunk
This section contains the following procedures to work with LACP trunks:
“Creating an LACP Trunk,” next
“Configuring the LACP Port Priority” on page 93
“Verifying the LACP Group Settings” on page 94
“Disabling an LACP Trunk” on page 95
Creating an
LACP Trunk
To create an LACP trunk, perform the following procedure:
1. From the Main Menu, type A to select Advanced Switch
Configuration.
The Advanced Switch Configuration Menu is shown in Figure 21 on
page 88.
2. From the Advanced Switch Configuration Menu, type T to select
Trunk Configuration.
The Trunk Configuration Menu is shown in Figure 22 on page 89.
3. To set the trunk status, type S to select Set Trunk Status.
The following prompt is displayed:
Enter trunk group number>
4. Type the trunk group number and press Enter.
The following prompt is displayed:
Set trunk group n status (A/P/M/D)>
5. Choose one of the four following settings:
A - LACP Active: Ports are in an active negotiation state.
P - LACP Passive: Ports are in a passive state where the port
negotiates a bundle by exchanging LACP packets to the peer only if
the far end initiates it.
M - Manual: Ports are in a static trunk state.
D - Disabled: Ports are disabled and do not sent or received LACP
data units or network traffic.
Note
LACP must be enabled at both ends of the link to be operational.
92 Section I: Using the Menus Interface
AT-S84 Management Software User’s Guide
Configuring the
LACP Port
Priority
AT-9000/24 Local Management System
Trunk Configuration -> LACP Port Priority Menu
The switch uses the port priority to determine which ports are to be active
and which are to be in standby mode in situations where the number of
ports in the aggregate trunk exceeds the highest allowed number of active
ports. The port with the lowest numerical value has the highest priority.
To configure the LACP port priority, perform the following procedure:
1. From the Main Menu, type A to select Advanced Switch
Configuration.
The Advanced Switch Configuration Menu is shown in Figure 21 on
page 88.
2. From the Advanced Switch Configuration Menu, type T to select Trunk
Configuration.
The Trunk Configuration Menu is shown in Figure 22 on page 89.
3. From the Trunk Configuration Menu, type O to select Set Port Priority
The LACP Port Priority Menu is shown in Figure 23.
Port Priority
------- ---------11
21
31
41
51
61
71
81
91
10 1
----------------------- <COMMAND> -----------------------------
[S]et Port Priority [N]ext Page
[P]revious Page [Q]uit to previous menu
Command>
Figure 23. LACP Port Priority Menu
4. From the LACP Port Priority Menu, type S to select Set Port Priority.
The following prompt is displayed:
Section I: Using the Menus Interface 93
Chapter 6: Port Trunking
Enter port no>
5. Type the number of the port whose priority you want to set.
The following prompt is displayed:
Enter port priority>
6. Enter a number for the priority of the port.
The range is 1 to 255, and the default is 1.
Verifying the
LACP Group
Settings
To view the LACP group settings, perform the following procedure:
1. From the Main Menu, type A to select Advanced Switch
Configuration.
The Advanced Switch Configuration Menu is shown in Figure 21 on
page 88.
2. From the Advanced Switch Configuration Menu, type T to select
Trunk Configuration.
The Trunk Configuration Menu is shown in Figure 22 on page 89.
3. From the Trunk Configuration Menu, type G to select LACP Group
Status.
The following prompt is displayed:
Enter trunk group admin key>
4. Type a number from 1 to 4 to specify the admin key of the trunk you
want to view.
94 Section I: Using the Menus Interface
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The LACP Group Status Menu is displayed, as shown in Figure 24.
AT-9000/24 Local Management System
Trunk Configuration -> LACP Group Status Menu
System Priority : 32768
System ID : 00:00:90:24:00:03
Key : 1
Aggregator Attached Port List
----------- ----------------------------22
33
44
----------------------- <COMMAND> -----------------------------
[Q]uit to previous menu
Command>
Disabling an
LACP Trunk
Figure 24. LACP Group Status Menu
The LACP Group Status Menu displays the following information about
the LACP group:
System Priority
The system priority as defined by IEE 802.3ad. You cannot change
this.
System ID
The MAC address of the system.
Key
The key for this trunk group.
The menu also contains a table that displays the following information:
Aggregator
The port that is operating as the aggregator.
Attached Port List
The ports assigned to the aggregator.
To disable an LACP trunk, perform the following procedure:
1. From the Main Menu, type A to select Advanced Switch
Configuration.
The Advanced Switch Configuration Menu is shown in Figure 21 on
page 88.
Section I: Using the Menus Interface 95
Chapter 6: Port Trunking
2. From the Advanced Switch Configuration Menu, type T to select
Trunk Configuration.
The Trunk Configuration Menu is shown in Figure 22 on page 89.
3. From the Trunk Configuration Menu, type S to select Set Trunk
Status.
The following prompt is displayed:
Enter trunk group number>
4. Enter the trunk group number.
The following prompt is displayed:
Set trunk group n status (A/P/M/D)>
5. Type D to select Disabled.
96 Section I: Using the Menus Interface
Chapter 7
Port Mirroring
This chapter contains the procedure for setting up port mirroring. Port
mirroring allows you to unobtrusively monitor the ingress and egress traffic
on a port by having the traffic copied to another port. This chapter contains
the following sections:
“Port Mirroring Overview” on page 98
“Configuring Port Mirroring” on page 99
“Enabling or Disabling Port Mirroring” on page 101
Section I: Using the Menus Interface 97
Chapter 7: Port Mirroring
Port Mirroring Overview
The port mirroring feature allows you to unobtrusively monitor the ingress
and egress traffic on a port on the switch by having the traffic copied to
another switch port. By connecting a network analyzer to the port where
the traffic is being copied to, you can monitor the traffic on the other port
without impacting its performance or speed.
The port whose traffic you want to mirror is called the mirrored port. The
port where the traffic will be copied to is called the mirroring port.
Observe the following guidelines when using this feature:
You can mirror only one port at a time.
The mirrored and mirroring ports must be on the same switch.
This feature copies both the ingress and egress traffic of the mirrored
port.
The mirroring port cannot be used for normal Ethernet switching.
98 Section I: Using the Menus Interface
Configuring Port Mirroring
To set up port mirroring, perform the following procedure:
1. From the Main Menu, type A to select Advanced Switch
Configuration.
The Advanced Switch Configuration Menu is shown in Figure 21 on
page 88.
2. From the Advanced Switch Configuration Menu, type M to select Port
Mirroring Configuration.
The Port Mirroring Configuration Menu is shown in Figure 25.
AT-9000/24 Local Management System
Advanced Switch Configuration -> Port Mirroring Configuration Menu
Mirroring Port Mirrored Port Status
--------------- -------------- -----2 1 Disabled
AT-S84 Management Software User’s Guide
----------------------- <COMMAND> -----------------------------
[S]et Mirroring Port
Set [M]irrored Port
[E]nable/Disable Port Mirroring
[Q]uit to previous menu
Command>
Figure 25. Port Mirroring Menu
3. Type S to select Set Mirroring Port.
The following prompt is displayed:
Set monitoring port-> Enter port number>
4. Type the number of the port where the network analyzer is connected
and press Enter. You can specify only one port.
5. Type M to select Set Mirrored Port.
The following prompt is displayed:
Set monitored port-> Enter port number>
6. Type the number of the port whose ingress and egress traffic you want
to monitor and press Enter. You can specify only one port.
Section I: Using the Menus Interface 99
Chapter 7: Port Mirroring
7. Type E to select Enable/Disable Port Mirroring.
The following prompt is displayed:
Enable or Disable monitoring (E/D)>
8. Type E to enable port mirroring.
You can now connect your data analyzer to the mirroring port.
100 Section I: Using the Menus Interface
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