Catalyst 2950 Desktop Switch Command Reference, 12.1(11)YJ4 - Preface [Cisco Catalyst 2950 LRE Series Switches]

Table Of Contents

Preface

Audience

Purpose

Organization

Conventions

Related Publications

Obtaining Documentation

Cisco.com

Documentation CD-ROM

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco.com

Technical Assistance Center

Cisco TAC Website

Cisco TAC Escalation Center

Obtaining Additional Publications and Information

Preface

Audience

This guide is for the networking professional using the Cisco IOS command-line interface (CLI) to manage the Catalyst 2950 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.

Purpose

The Catalyst 2950 switch is supported by either the standard software image (SI) or the enhanced software image (EI). The enhanced software image provides a richer set of features, including access control lists (ACLs), enhanced quality of service (QoS) features, the Secure Shell (SSH) Protocol, extended-range VLANs, the IEEE 802.1W Rapid Spanning Tree Protocol (STP), and the IEEE 802.1S Multiple STP.

Note This guide describes the features for all Catalyst 2950 switches, including the Catalyst 2950 Long-Reach Ethernet (LRE) switches. Cisco IOS Release 12.1(11)EA1 is not for the LRE switches. Do not install Release 12.1(11)EA1 on the Catalyst 2950 LRE switches.

This release is for the Catalyst 2950 LRE switches only. Do not install Release 12.1(11)YJ4 on non-LRE switches.

The Catalyst 2950 software supports the switches listed in Table 1 and in the release notes.

Table 1 Switches Supported

Switch

Software Image

Catalyst 2950-12

SI¹

Catalyst 2950-24

SI

Catalyst 2950C-24

EI²

Catalyst 2950G-12-EI

EI

Catalyst 2950G-24-EI

EI

Catalyst 2950G-24-EI-DC

EI

Catalyst 2950G-48-EI

EI

Catalyst 2950SX-24

SI

Catalyst 2950T-24

EI

Catalyst 2950ST-24 LRE

EI

Catalyst 2950ST-8 LRE

EI

Catalyst 2950ST-24 LRE 997

EI

¹SI = standard software image

²EI = enhanced software image

Note The SI and EI images are for non-LRE switches only.

The Cisco LRE customer premises equipment (CPE) devices are not supported by certain Catalyst 2950 LRE switches. In Table 2, Yes means that the CPE is supported by the switch; No means that the CPE is not supported by the switch.

Table 2 LRE Switch and CPE Compatibility Matrix

LRE Devices

Catalyst 2950ST-8 LRE switch

Catalyst 2950ST-24 LRE switch

Catalyst 2950ST-24 LRE 997 switch

Cisco 575 LRE CPE

Yes

Yes

No

Cisco 576 LRE 997 CPE

No

No

Yes

Cisco 585 LRE CPE

Yes

Yes

No

The Catalyst 2950ST-24 LRE 997 switches are not supported by certain Cisco IOS releases. In Table 3, Yes means that the switch is supported by the IOS release; No means that the switch is not supported by the IOS release.

Table 3 LRE Switch Software Compatibility Matrix

Switch

Cisco Release12.1(11)YJ,
Release 12.1(11)YJ1,
Release 12.1(11)YJ2, and
Release 12.1(11)YJ3

Cisco 12..1(11)YJ4 or later

Catalyst 2950ST-8 LRE

Yes

Yes

Catalyst 2950ST-24 LRE

Yes

Yes

Catalyst 2950ST-24 LRE 997

No

Yes

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 Desktop 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 Desktop Switch System Message Guide for this release.

Organization

This guide is organized into these chapters:

"Using the Command-Line Interface," describes how to access the command modes and use the switch CLI to configure software features.

"Cisco IOS Commands," describes in alphabetical order the IOS commands that you use to configure and monitor your switch.

"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.

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 at this URL:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/index.htm

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

•Release Notes for the Catalyst 2950 LRE Switches (not orderable but is available on Cisco.com)

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 Cisco.com for the latest information.

For hardware information about the switch, refer to the Catalyst 2950 Desktop Switch Hardware Installation Guide (order number DOC-7811157=)

For software information about the switch, refer to these documents:

•Catalyst 2950 Desktop Switch Software Configuration Guide (order number DOC-7814982=)

•Catalyst 2950 Desktop Switch Command Reference (order number DOC-7814984=)

•Catalyst 2950 Desktop Switch System Message Guide (order number DOC-7814981=)

For other information about related products, refer to these documents:

•Cisco LRE CPE Hardware Installation Guide (order number DOC-7811469=)

•Cisco RPS 675 Redundant Power System Hardware Installation Guide (order number DOC-7815201=)

•Cluster Management Suite (CMS) online help (available only from the switch CMS software)

•Installation Notes for the Catalyst Family Small-Form-Factor Pluggable Modules (order number DOC-7815160=)

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