2950SCG.pdf

Catalyst 2950 and Catalyst 2955 Switch

Software Configuration Guide

Cisco IOS Release 12.1(22)EA5

July 2005

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Text Part Number: 78-11380-12

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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide

CONTENTS

Preface xxvii

Audience xxvii

Purpose xxvii

Conventions xxviii

Related Publications xxix

Obtaining Documentation

xxix

Cisco.com xxx

Product Documentation DVD

xxx

Ordering Documentation xxx

Documentation Feedback xxxi

Cisco Product Security Overview xxxi

Reporting Security Problems in Cisco Products

xxxi

Obtaining Technical Assistance xxxii

Cisco Technical Support & Documentation Website

xxxii

Submitting a Service Request xxxiii

Definitions of Service Request Severity xxxiii

Obtaining Additional Publications and Information

xxxiii

Overview 1-1

Features 1-1

Ease of Use and Ease of Deployment

CHAPTER 1

1-2

Performance

1-3

Manageability

1-4

Redundancy

1-5

VLAN Support

1-6

Security 1-6

Quality of Service and Class of Service

1-7

Monitoring 1-8

LRE Features (available only on Catalyst 2950 LRE switches)

1-8

Management Options 1-9

Management Interface Options 1-9

Advantages of Using Network Assistant and Clustering Switches

1-10

Network Configuration Examples 1-11

Design Concepts for Using the Switch

1-12

Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide

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Contents

Small to Medium-Sized Network Configuration 1-15

Collapsed Backbone and Switch Cluster Configuration

1-16

Hotel Network Configuration 1-17

Service-Provider Central-Office Configuration

1-20

Large Campus Configuration 1-21

Multidwelling Network Using Catalyst 2950 Switches

1-22

Long-Distance, High-Bandwidth Transport Configuration

1-24

Where to Go Next

1-24

Using the Command-Line Interface

CHAPTER 2

2-1

Cisco IOS Command Modes

2-1

Getting Help 2-3

Abbreviating Commands 2-4

Using no and default Forms of Commands

2-4

Understanding CLI Messages

2-5

Using Command History 2-5

Changing the Command History Buffer Size

2-5

Recalling Commands 2-6

Disabling the Command History Feature

2-6

Using Editing Features 2-6

Enabling and Disabling Editing Features

2-6

Editing Commands through Keystrokes

2-7

Editing Command Lines that Wrap 2-8

Searching and Filtering Output of show and more Commands

2-9

Accessing the CLI

2-9

Configuring Catalyst 2955 Switch Alarms

CHAPTER 3

3-1

Understanding Catalyst 2955 Switch Alarms

3-1

Global Status Monitoring Alarms

3-2

FCS Error Hysteresis Threshold

3-2

Port Status Monitoring Alarms

3-3

Triggering Alarm Options

3-3

Configuring Catalyst 2955 Switch Alarms 3-4

Default Catalyst 2955 Switch Alarm Configuration

3-4

Configuring the Power Supply Alarm

3-5

Setting the Power Mode 3-5

Setting the Power Supply Alarm Options

3-5

Configuring the Switch Temperature Alarms

3-6

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Contents

Setting a Secondary Temperature Threshold for the Switch

3-6

Associating the Temperature Alarms to a Relay

3-7

Configuring the FCS Bit Error Rate Alarm

3-7

Setting the FCS Error Threshold 3-8

Setting the FCS Error Hysteresis Threshold

3-8

Configuring Alarm Profiles 3-9

Creating or Modifying an Alarm Profile 3-9

Attaching an Alarm Profile to a Specific Port

3-10

Enabling SNMP Traps 3-11

Displaying Catalyst 2955 Switch Alarms Status

3-11

Assigning the Switch IP Address and Default Gateway

CHAPTER 4

4-1

Understanding the Boot Process 4-1

Assigning Switch Information 4-2

Default Switch Information 4-3

Understanding DHCP-Based Autoconfiguration

4-3

DHCP Client Request Process 4-4

Configuring DHCP-Based Autoconfiguration

4-5

DHCP Server Configuration Guidelines

4-5

Configuring the TFTP Server

4-6

Configuring the DNS 4-6

Configuring the Relay Device

4-7

Obtaining Configuration Files

4-8

Example Configuration 4-9

Manually Assigning IP Information 4-10

Checking and Saving the Running Configuration

4-11

Modifying the Startup Configuration

4-11

Default Boot Configuration 4-12

Automatically Downloading a Configuration File 4-12

Specifying the Filename to Read and Write the System Configuration

4-12

Booting Manually 4-13

Booting a Specific Software Image 4-13

Controlling Environment Variables 4-14

Scheduling a Reload of the Software Image

4-16

Configuring a Scheduled Reload 4-16

Displaying Scheduled Reload Information

4-17

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