Catalyst 4500 Series Switch Cisco IOS Software Configuration Guide, 12.2(25)SG
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Table Of Contents




Related Documentation

Hardware Documents

Software Documentation

Cisco IOS Documentation


Commands in Task Tables

Obtaining Documentation and Submitting a Service Request


This preface describes who should read this document, how it is organized, and its conventions. The preface also tells you how to obtain Cisco documents, as well as how to obtain technical assistance.


This guide is for experienced network administrators who are responsible for configuring and maintaining Catalyst 4500 series switches.


This guide is organized into the following chapters:


Chapter 1

Product Overview

Presents an overview of the Cisco IOS software for the Catalyst 4500 series switches

Chapter 2

Command-Line Interfaces

Describes how to use the CLI

Chapter 3

Configuring the Switch for the First Time

Describes how to perform a baseline configuration of the switch

Chapter 4

Configuring Interfaces

Describes how to configure non-layer-specific features on Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet interfaces

Chapter 5

Checking Port Status and Connectivity

Describes how to check module and interface status

Chapter 6

Configuring Supervisor Engine Redundancy Using RPR and SSO

Describes how to configure RPR and SSO on the Catalyst 4507R and 4510R switches

Chapter 7

Environmental Monitoring and Power Management

Describes how to configure power management and environmental monitoring features

Chapter 8

Configuring Power over Ethernet

Describes how to configure Power over Ethernet (PoE)

Chapter 9

Configuring Switches with Web-Based Tools

Describes how to install and configure Network Assistant and Embedded CiscoView

Chapter 10

Understanding and Configuring VLANs, VTP, and VMPS

Describes how to configure VLANs, VTP, and VMPS.

Chapter 11

Configuring Layer 2 Ethernet Interfaces

Describes how to configure interfaces to support Layer 2 features, including VLAN trunks

Chapter 12

Configuring SmartPort Macros

Describes how to configure SmartPort macros

Chapter 13

Understanding and Configuring STP

Describes how to configure the Spanning Tree Protocol (STP) and explains how spanning tree works

Chapter 14

Configuring STP Features

Describes how to configure the spanning-tree PortFast, UplinkFast, BackboneFast, and other STP features

Chapter 15

Understanding and Configuring Multiple Spanning Trees

Describes how to configure the Multiple Spanning Tree (MST) protocol and explains how it works

Chapter 16

Understanding and Configuring EtherChannel

Describes how to configure Layer 2 and Layer 3 EtherChannel port bundles

Chapter 17

Configuring IGMP Snooping and Filtering

Describes how to configure Internet Group Management Protocol (IGMP) snooping

Chapter 18

Configuring 802.1Q and Layer 2 Protocol Tunneling

Describes how to configure 802.1Q and Layer 2 protocol Tunneling

Chapter 19

Understanding and Configuring CDP

Describes how to configure the Cisco Discovery Protocol (CDP)

Chapter 20

Configuring UDLD

Describes how to configure the UniDirectional Link Detection (UDLD) protocol

Chapter 21

Configuring Unidirectional Ethernet

Describes how to configure unidirectional Ethernet

Chapter 22

Configuring Layer 3 Interfaces

Describes how to configure interfaces to support Layer 3 features

Chapter 23

Configuring Cisco Express Forwarding

Describes how to configure Cisco Express Forwarding (CEF) for IP unicast traffic

Chapter 24

Understanding and Configuring IP Multicast

Describes how to configure IP Multicast Multilayer Switching (MMLS)

Chapter 25

Configuring Policy-Based Routing

Describes how to configure policy-based routing

Chapter 27

Understanding and Configuring VTP

Describes how to configure the VLAN Trunking Protocol

Chapter 26

Configuring VRF-lite

Describes how to configure multiple VPN routing/forwarding (multi-VRF) instances in customer edge (CE) devices

Chapter 27

Configuring Quality of Service

Describes how to configure quality of service (QoS).

Chapter 28

Configuring Voice Interfaces

Describes how to configure multi-VLAN access ports for use with Cisco IP phones

Chapter 29

Understanding and Configuring 802.1X Port-Based Authentication

Describes how to configure 802.1X port-based authentication

Chapter 30

Configuring Port Security and Trunk Port Security

Describes how to configure port security and trunk port security.

Chapter 31

Configuring DHCP Snooping and IP Source Guard

Describes how to configure DHCP snooping and IP Source Guard

Chapter 32

Understanding and Configuring Dynamic ARP Inspection

Describes how to configure Dynamic ARP Inspection

Chapter 33

Configuring Network Security with ACLs

Describes how to configure ACLS, VACLs, and MACLs

Chapter 34

Configuring Private VLANs

Describes how to set up and modify private VLANs

Chapter 35

Port Unicast and Multicast Flood Blocking

Describes how to configure unicast flood blocking

Chapter 36

Configuring Storm Control

Describes how to configure storm control suppression

Chapter 37

Configuring SPAN and RSPAN

Describes how to configure the Switched Port Analyzer (SPAN)

Chapter 38

Configuring NetFlow

Describes how to configure NetFlow statistics gathering

Appendix A

Acronyms and Abbreviations

Defines acronyms and abbreviations used in this book

Related Documentation

Refer to the following documents for additional Catalyst 4500 series information:

Catalyst 4500 Series Switch Documentation Home

Catalyst 4900 Series Switch Documentation Home

Cisco ME 4900 Series Ethernet Switches Documentation Home

Hardware Documents

Installation guides and notes including specifications and relevant safety information are available at the following URLs:

Catalyst 4500 Series Switches Installation Guide

Catalyst 4500 E-series Switches Installation Guide

For information about individual switching modules and supervisors, refer to the Catalyst 4500 Series Module Installation Guide at:

Regulatory Compliance and Safety Information for the Catalyst 4500 Series Switches

Installation notes for specific supervisor engines or for accessory hardware are available at:

Catalyst 4900 and 4900M hardware installation information is available at:

Cisco ME 4900 Series Ethernet Switches installation information is available at:

Software Documentation

Software release notes, configuration guides, command references, and system message guides are available at the following URLs:

Catalyst 4500 release notes are available at:

Catalyst 4900 release notes are available at:

Cisco ME4900 4900 Series Ethernet Switch release notes are available at:

Software documents for the Catalyst 4500 Classic, Catalyst 4500 E-Series, Catalyst 4900, and
Cisco ME 4900 Series Ethernet Switches are available at the following URLs:

Catalyst 4500 Series Software Configuration Guide

Catalyst 4500 Series Software Command Reference

Catalyst 4500 Series Software System Message Guide

Cisco IOS Documentation

Platform-independent Cisco IOS documentation may also apply to the Catalyst 4500 and 4900 switches. These documents are available at the following URLs:

Cisco IOS configuration guides, Release 12.x

Cisco IOS command references, Release 12.x

You can also use the Command Lookup Tool at:

Cisco IOS system messages, version 12.x

You can also use the Error Message Decoder tool at:

For information about MIBs, refer to:


This document uses the following typographical conventions:


boldface font

Commands, command options, and keywords are in boldface.

italic font

Command arguments for which you supply values are in italics.

[   ]

Command elements in square brackets are optional.

{ x | y | z }

Alternative keywords in command lines are grouped in braces and separated by vertical bars.

[ x | y | z ]

Optional alternative keywords are grouped in brackets and separated by vertical bars.


A nonquoted set of characters. Do not use quotation marks around the string because the string will include the quotation marks.

screen font

System displays are in screen font.

boldface screen font

Information you must enter verbatim is in boldface screen font.

italic screen font

Arguments for which you supply values are in italic screen font.


This pointer highlights an important line of text in an example.


Represents the key labeled Control—for example, the key combination ^D in a screen display means hold down the Control key while you press the D key.

<   >

Nonprinting characters such as passwords are in angle brackets.

Notes use the following conventions:

Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the publication.

Cautions use the following conventions:

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

Commands in Task Tables

Commands listed in task tables show only the relevant information for completing the task and not all available options for the command. For a complete description of a command, refer to the command in the Catalyst 4500 Series Switch Cisco IOS Command Reference.

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS Version 2.0.