Catalyst 2940 Switch Command Reference, Release 12.1(13)AY
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Table Of Contents





Related Publications

Obtaining Documentation

Documentation CD-ROM

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco TAC Website

Opening a TAC Case

TAC Case Priority Definitions

Obtaining Additional Publications and Information



This guide is for the networking professional using the Cisco IOS command-line interface (CLI) to manage the Catalyst 2940 switch, hereafter referred to as the switch. Before using this guide, you should have experience working with the Cisco IOS and be familiar with the concepts and terminology of Ethernet and local area networking.


This guide provides the information that you need about the CLI commands that have been created or changed for use with the Catalyst 2940 switch. For information about the standard IOS Release 12.1 commands, refer to the IOS documentation set available from the home page by selecting Service and Support > Technical Documents. On the Cisco Product Documentation home page, select Release 12.1 from the Cisco IOS Software drop-down list.

This guide does not provide procedures for configuring your switch. For detailed configuration procedures, refer to the Catalyst 2940 Switch Software Configuration Guide for this release.

This guide does not describe system messages you might encounter. For more information, refer to the Catalyst 2940 Switch System Message Guide for this release.


This guide uses these conventions to convey instructions and information:

Command descriptions use these conventions:

Commands and keywords are in boldface text.

Arguments for which you supply values are in italic.

Square brackets ([ ]) mean optional elements.

Braces ({ }) group required choices, and vertical bars ( | ) separate the alternative elements.

Braces and vertical bars within square brackets ([{ | }]) mean a required choice within an optional element.

Interactive examples use these conventions:

Terminal sessions and system displays are in screen font.

Information you enter is in boldface screen font.

Nonprinting characters, such as passwords or tabs, are in angle brackets (< >).

Notes, cautions, and tips use these conventions and symbols:

Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in this manual.

Caution Means reader be careful. In this situation, you might do something that could result equipment damage or loss of data.

Timesaver Means the following will help you solve a problem. The tips information might not be troubleshooting or even an action, but could be useful information.

Related Publications

These documents provide complete information about the switch and are available from this URL:

You can order printed copies of documents with a DOC-xxxxxx= number from the sites and from the telephone numbers listed in the "Obtaining Documentation" section.

Release Notes for the Catalyst 2940 Switch (not orderable but available on

Note Switch requirements and procedures for initial configurations and software upgrades tend to change and therefore appear only in the release notes. Before installing, configuring, or upgrading the switch, refer to the release notes on for the latest information.

For hardware information for the Catalyst 2940 switches, refer to these documents:

Catalyst 2940 Hardware Installation Guide (order number DOC-15431-01=)

For software information about Cisco IOS Release 12.1(13)AY for the Catalyst 2940 switch, refer to these documents:

Catalyst 2940 Switch Software Configuration Guide (order number DOC-7815507=)

Catalyst 2940 Switch System Message Guide (order number DOC-7815524=)

For other Catalyst 2940 publications, refer to these documents:

About the Catalyst 2940 Documentation (order number DOC-78-15470=)

The Cluster Management Suite (CMS) online help, available only from the switch CMS software.

Obtaining Documentation

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You can access the most current Cisco documentation on the World Wide Web at this URL:

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Documentation CD-ROM

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Registered users can order a single Documentation CD-ROM (product number DOC-CONDOCCD=) through the Cisco Ordering tool:

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Ordering Documentation

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You can order Cisco documentation in these ways:

Registered users (Cisco direct customers) can order Cisco product documentation from the Networking Products MarketPlace:

Nonregistered users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters (California, USA.) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

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We appreciate your comments.

Obtaining Technical Assistance

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Accessing all the tools on the Cisco TAC website requires a user ID and password. If you have a valid service contract but do not have a login ID or password, register at this URL:

Opening a TAC Case

The online TAC Case Open Tool ( is the fastest way to open P3 and P4 cases. (Your network is minimally impaired or you require product information). After you describe your situation, the TAC Case Open Tool automatically recommends resources for an immediate solution. If your issue is not resolved using these recommendations, your case will be assigned to a Cisco TAC engineer.

For P1 or P2 cases (your production network is down or severely degraded) or if you do not have Internet access, contact Cisco TAC by telephone. Cisco TAC engineers are assigned immediately to P1 and P2 cases to help keep your business operations running smoothly.

To open a case by telephone, use one of the following numbers:

Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
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For a complete listing of Cisco TAC contacts, go to this URL:

TAC Case Priority Definitions

To ensure that all cases are reported in a standard format, Cisco has established case priority definitions.

Priority 1 (P1)—Your network is "down" or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.

Priority 2 (P2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.

Priority 3 (P3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.

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Obtaining Additional Publications and Information

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Cisco Press publishes a wide range of networking publications. Cisco suggests these titles for new and experienced users: Internetworking Terms and Acronyms Dictionary, Internetworking Technology Handbook, Internetworking Troubleshooting Guide, and the Internetworking Design Guide. For current Cisco Press titles and other information, go to Cisco Press online at this URL:

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