Specifications

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
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Preface
Organization
Note This software release does not support the Catalyst 2950 LRE switches. For information about these
switches, refer to the Catalyst 2950 LRE switch release notes.
This guide provides the information you need about the CLI commands that have been created or
changed for use with the Catalyst 2950 family of switches. For information about the standard IOS
Release 12.1 commands, refer to the IOS documentation set available from the Cisco.com 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 2950 and Catalyst 2955 Switch Software Configuration Guide for this
release.
This guide does not describe system messages you might encounter. For more information, refer to the
Catalyst 2950 and Catalyst 2955 Switch System Message Guide for this release.
Organization
This guide is organized into these chapters:
Chapter 1, “Using the Command-Line Interface,” describes how to access the command modes and use
the switch CLI to configure software features. It also lists the commands that have the same function but
different syntax in software releases earlier than Release 12.1(6)EA2 and in Release 12.1(6)EA2 or later.
Chapter 2, “Cisco IOS Commands,” describes in alphabetical order the IOS commands that you use to
configure and monitor your switch.
Appendix A, “Catalyst 2955-Specific Alarm Commands,” describes the IOS commands that you use to
set alarms related to temperature, power supply conditions, and the status of the Ethernet ports.
Appendix B, “Debug Commands,” describes the debug privileged EXEC commands. Debug commands
are helpful in diagnosing and resolving internetworking problems.
Conventions
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.