Catalyst 2950 Desktop Switch Software Configuration Guide, 12.1(6)EA2c
Preface
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Preface

Table Of Contents

Preface

Audience

Purpose

Organization

Conventions

Related Publications

Obtaining Documentation

World Wide Web

Documentation CD-ROM

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco.com

Technical Assistance Center

Cisco TAC Web Site

Cisco TAC Escalation Center


Preface


Audience

The Catalyst 2950 Desktop Switch Software Configuration Guide is for the network manager responsible for configuring the Catalyst 2950 switches, hereafter referred to as the switches. Before using this guide, you should be familiar with the concepts and terminology of Ethernet and local area networking.

Purpose

This guide provides information about configuring and troubleshooting a switch or switch clusters. It includes descriptions of the management interface options and the features supported by the switch software. The Catalyst 2950 switch is supported by either the standard software image or the enhanced software image. The enhanced software image provides a richer set of features, including access control lists (ACLs) and enhanced quality of service (QoS) features.

The enhanced software image supports these switches:

Catalyst 2950C-24

Catalyst 2950G-12-EI

Catalyst 2950G-24-EI

Catalyst 2950G-24-EI-DC

Catalyst 2950G-48-EI

Catalyst 2950T-24

The standard software image supports these switches:

Catalyst 2950-12

Catalyst 2950-24

Use this guide with other documents for information about these topics:

Requirements—This guide assumes that you have met the hardware and software requirements and cluster compatibility requirements described in the release notes.

Start-up information—This guide assumes that you have assigned switch IP information and passwords by using the setup program described in the release notes.

Cluster Management Suite (CMS) information—This guide provides an overview of the CMS web-based, switch management interface. For information about CMS requirements and the procedures for browser and plug-in configuration and accessing CMS, refer to the release notes. For CMS field-level window descriptions and procedures, refer to the CMS online help.

Cluster configuration—This guide provides information about planning for, creating, and maintaining switch clusters. Because configuring switch clusters is most easily performed through CMS, this guide does not provide the command-line interface (CLI) procedures. For the cluster commands, refer to the Catalyst 2950 Desktop Switch Command Reference.

CLI command information—This guide provides an overview for using the CLI. For complete syntax and usage information about the commands that have been specifically created or changed for the Catalyst 2950 switches, refer to the Catalyst 2950 Desktop Switch Command Reference.


Note This guide does not repeat the concepts and CLI procedures provided in the standard Cisco IOS Release 12.1 documentation. For information about the standard IOS Release 12.1 commands, refer to the IOS documentation set available from the Cisco.com home page at Service and Support > Technical Documents. On the Cisco Product Documentation home page, select Release 12.1 from the Cisco IOS Software drop-down list.


Organization

The organization of this guide is as follows:

"Overview," lists the software features of this release and provides examples of how the switch can be deployed in a network.

"Getting Started with CMS," describes the Cluster Management Suite (CMS) web-based, switch management interface. For information on configuring your web browser and accessing CMS, refer to the release notes. For field-level descriptions of all CMS windows and procedures for using the CMS windows, refer to the online help.

"Using the Command-Line Interface," describes how to access the command modes, use the command-line interface (CLI), and describes CLI messages that you might receive. It also describes how to get help, abbreviate commands, use no and default forms of commands, use command history and editing features, and how to search and filter the output of show and more commands.

"General Switch Administration," includes the switch-configuration default settings and information about software releases, accessing the management interfaces, and using Simple Network Management Protocol (SNMP).

"Clustering Switches," describes switch clusters and the considerations for creating and maintaining them. The online help provides the CMS procedures for configuring switch clusters. Configuring switch clusters is most easily performed through CMS; therefore, CLI procedures are not provided. Cluster commands are described in the Catalyst 2950 Desktop Switch Command Reference.

"Configuring the System," provides the considerations and CLI procedures for configuring switch-wide settings. The online help provides the CMS procedures for configuring switch-wide settings.

"Configuring 802.1X Port-Based Authentication," provides the considerations and CLI procedures for configuring 802.1X port-based authentication. The online help provides the CMS procedures.

"Configuring VLANs," provides the considerations and CLI procedures for configuring VLANs. The online help provides the CMS procedures.

"Configuring STP," provides the considerations and CLI procedures for configuring basic and advanced spanning-tree features. The online help provides the CMS procedures.

"Configuring the Switch Ports," provides the considerations and CLI procedures for configuring the switch ports. The online help provides the CMS procedures for configuring the switch ports.

"Configuring IGMP Snooping and MVR," provides the considerations and CLI procedures for configuring Internet Group Management Protocol (IGMP) snooping. It also describes Multicast VLAN Registration (MVR), a local IGMP snooping feature available on the switch. The online help provides the CMS procedures.

"Configuring Network Security with ACLs," provides the considerations and CLI procedures for configuring network security by using access control lists (ACLs). It describes how to apply ACLs to interfaces and provides examples. The online help provides the CMS procedures.

"Configuring QoS," provides the considerations and CLI procedures for configuring quality of service (QoS). With this feature, you can provide preferential treatment to certain types of traffic. The online help provides the CMS procedures.

"Troubleshooting," describes how to identify and resolve software problems related to the IOS software.

"Error Messages for Security and QoS Configurations" lists the CLI error messages for configuring security using ACLs and for configuring QoS.

"System Messages," lists the IOS system messages for the switch.

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 ([ ]) indicate optional elements.

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

Braces and vertical bars within square brackets ([{ | }]) indicate 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 in equipment damage or loss of data.


Tip 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
Cisco.com site:

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 from the telephone numbers listed in the "Obtaining Documentation" section.

Release Notes for the Catalyst 2950 Switch (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.


Catalyst 2950 Desktop Switch Software Configuration Guide, (order number DOC-7811380=)

Catalyst 2950 Desktop Switch Command Reference, (order number DOC-7811381=)

Catalyst 2950 Desktop Switch Hardware Installation Guide (order number DOC-7811157=)

Catalyst GigaStack Gigabit Interface Converter Hardware Installation Guide (order number DOC-786460=)

Obtaining Documentation

The following sections explain how to obtain documentation from Cisco Systems.

World Wide Web

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

http://www.cisco.com

Translated documentation is available at the following URL:

http://www.cisco.com/public/countries_languages.shtml

Documentation CD-ROM

Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which is shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual subscription.

Ordering Documentation

Cisco documentation is available in this ways:

Registered Cisco Direct Customers can order Cisco product documentation from the Networking Products MarketPlace:

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Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store:

http://www.cisco.com/go/subscription

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

Documentation Feedback

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Obtaining Technical Assistance

Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC Web Site.

Cisco.com

Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.

Cisco.com is a highly integrated Internet application and a powerful, easy-to-use tool that provides a broad range of features and services to help you to

Streamline business processes and improve productivity

Resolve technical issues with online support

Download and test software packages

Order Cisco learning materials and merchandise

Register for online skill assessment, training, and certification programs

You can self-register on Cisco.com to obtain customized information and service. To access Cisco.com, go to the following URL:

http://www.cisco.com

Technical Assistance Center

The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web Site and the Cisco TAC Escalation Center.

Inquiries to Cisco TAC are categorized according to the urgency of the issue:

Priority level 4 (P4)—You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration.

Priority level 3 (P3)—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.

Priority level 2 (P2)—Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available.

Priority level 1 (P1)—Your production network is down, and a critical impact to business operations will occur if service is not restored quickly. No workaround is available.

Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service contracts, when applicable.

Cisco TAC Web Site

The Cisco TAC Web Site allows you to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to the following URL:

http://www.cisco.com/tac

All customers, partners, and resellers who have a valid Cisco services contract have complete access to the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to the following URL to register:

http://www.cisco.com/register/

If you cannot resolve your technical issues by using the Cisco TAC Web Site, and you are a Cisco.com registered user, you can open a case online by using the TAC Case Open tool at the following URL:

http://www.cisco.com/tac/caseopen

If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.

Cisco TAC Escalation Center

The Cisco TAC Escalation Center addresses issues that are classified as priority level 1 or priority level 2; these classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer will automatically open a case.

To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to the following URL:

http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml

Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled; for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). In addition, please have available your service agreement number and your product serial number.