Catalyst 3550 Multilayer Switch Software Configuration Guide, 12.1(12c)EA1
Preface
Downloads: This chapterpdf (PDF - 263.0KB) The complete bookPDF (PDF - 11.03MB) | Feedback

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

This guide is for the networking professional managing the Catalyst 3550 switch, hereafter referred to as the switch or the multilayer 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

This guide provides the information you need to configure Layer 2 and Layer 3 software features on your switch. The Catalyst 3550 switch is supported by either the standard multilayer software image (SMI), which provides Layer 2+ features and basic Layer 3 routing, or the enhanced multilayer software image (EMI), which provides Layer 2+ features, full Layer 3 routing, and advanced services. All Catalyst 3550 Gigabit Ethernet switches are shipped with the EMI pre-installed. Catalyst 3550 Fast Ethernet switches are shipped with either the SMI or the EMI pre-installed. After initial deployment, you can order the Enhanced Multilayer Software Image Upgrade kit to upgrade Catalyst 3550 Fast Ethernet switches from the SMI to the EMI.

This guide provides procedures for using the commands that have been created or changed for use with the Catalyst 3550 switch. It does not provide detailed information about these commands. For detailed information about these commands, refer to the Catalyst 3550 Multilayer Switch Command Reference for this release. 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.

This guide also includes an overview of the Cluster Management Suite (CMS) web-based, switch management interface, which helps you create and manage clusters of switches. This guide does not provide field-level descriptions of the CMS windows nor does it provide the procedures for configuring switches and switch clusters from CMS. For all CMS window descriptions and procedures, refer to the CMS online help, which is integrated with the software image.

This guide does not describe system messages you might encounter or how to install your switch. For more information, refer to the Catalyst 3550 Multilayer Switch System Message Guide for this release and to the Catalyst 3550 Multilayer Switch Hardware Installation Guide.

Organization

This guide is organized into these chapters:

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

"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.

"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.

"Assigning the Switch IP Address and Default Gateway," describes how to create the initial switch configuration (for example, assign the switch IP address and default gateway information) by using a variety of automatic and manual methods. It also describes how to modify the switch startup configuration.

"Configuring IE2100 CNS Agents," describes how to configure Cisco Intelligence Engine 2100 (IE2100) Series Cisco Networking Services (CNS) embedded agents on your switch. By using the IE 2100 Series Configuration Registrar network management application, you can automate initial configurations and configuration updates by generating switch-specific configuration changes, sending them to the switch, executing the configuration change, and logging the results.

"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 3550 Multilayer Switch Command Reference.

"Administering the Switch," describes how to perform one-time operations to administer your switch. It describes how to set the system date and time, system name and prompt, create a login banner, how to manage the MAC address table, and how to optimize system resources for user-selected features.

"Configuring Switch-Based Authentication," describes how to configure switch-based authentication on your switch. It describes how to prevent unauthorized access to your switch through the use of passwords, privilege levels, the Terminal Access Controller Access Control System Plus (TACACS+), the Remote Authentication Dial-In User Service (RADIUS), Kerberos, and the Secure Shell (SSH).

"Configuring 802.1X Port-Based Authentication," describes how to configure 802.1X port-based authentication to prevent unauthorized devices (clients) from gaining access to the network.

"Configuring Interface Characteristics," defines the types of Layer 2 and Layer 3 interfaces on the switch. It describes the interface command and provides procedures for configuring physical interfaces.

"Configuring VLANs," describes how to create and maintain VLANs. It includes information about the VLAN database, VLAN configuration modes, extended VLANs, VLAN Trunks, and the VLAN Membership Policy Server (VMPS).

"Configuring VTP," describes how to use the VLAN Trunking Protocol (VTP) VLAN database for managing VLANs. It includes VTP characteristics and configuration.

"Configuring Voice VLAN," describes how to configure a voice VLAN on the switch for a connection to an IP phone.

"Configuring 802.1Q and Layer 2 Protocol Tunneling," describes how to use 802.1Q tunneling to maintain and segregate customer VLANs across a service provider infrastructure and Layer 2 protocol tunneling to ensure that all customer sites receive complete STP, CDP, and VTP information.

"Configuring STP," describes how to configure the Spanning Tree Protocol (STP) on your switch.

"Configuring RSTP and MSTP," describes how to configure the Cisco implementation of the IEEE 802.1W Rapid Spanning Tree Protocol (RSTP) and the IEEE 802.1S Multiple STP (MSTP) on your switch. RSTP provides rapid convergence, and MSTP enables VLANs to be grouped into a spanning-tree instance.

"Configuring Optional Spanning-Tree Features," describes how to configure optional spanning-tree features that can be used when your switch is running the per-VLAN spanning-tree (PVST) or the MSTP.

"Configuring the DHCP Option 82 for Subscriber Identification," describes how to configure the Dynamic Host Configuration Protocol (DHCP) relay agent information (option 82) feature so that the switch can include information about itself and the attached client when forwarding DHCP requests from a DHCP client to a DHCP server.

"Configuring IGMP Snooping and MVR," describes how to configure Layer 2 Internet Group Management Protocol (IGMP) snooping. It also describes Multicast VLAN Registration (MVR), a local IGMP snooping feature available on the switch, and how to use IGMP filtering to control multicast group membership.

"Configuring Port-Based Traffic Control," describes how to reduce traffic storms by setting broadcast, multicast, and unicast storm-control threshold levels; how to protect ports from receiving traffic from other ports on a switch; how to block unknown broadcast and unicast traffic; and how to configure port security using secure MAC addresses.

"Configuring CDP," describes how to configure Cisco Discovery Protocol (CDP) on your switch.

"Configuring UDLD," describes how to configure the UniDirectional Link Detection (UDLD) feature. UDLD enables devices connected through fiber-optic or twisted-pair Ethernet cables to monitor the physical configuration of the cables and detect when a unidirectional link exists.

"Configuring SPAN and RSPAN," describes how to configure Switched Port Analyzer (SPAN) and Remote SPAN (RSPAN), which selects network traffic for analysis by a network analyzer such as a SwitchProbe device or other Remote Monitoring (RMON) probe.

"Configuring RMON," describes how to configure remote monitoring (RMON). The RMON feature, which is used with the Simple Network Management Protocol (SNMP) agent in the switch, means that you can monitor all the traffic flowing among switches on all connected LAN segments.

"Configuring System Message Logging," describes how to configure system message logging. It describes the message format, how to change the message display destination device, limit the type of messages sent, configure UNIX server syslog daemon and define the UNIX system logging facility, and timestamp messages.

"Configuring SNMP," describes how to configure the Simple Network Management Protocol (SNMP). It describes how to configure community strings, enable trap managers and traps, set the agent contact and location information, and how to limit TFTP servers used through SNMP.

"Configuring Network Security with ACLs," describes how to configure network security on your switch by creating standard and extended IP access control lists (ACLs) or named MAC extended ACLs and applying them to routed interfaces (router ACLs), Layer 2 interfaces (port ACLs), or VLANs (VLAN maps).

"Configuring QoS," describes how to configure automatic or standard quality of service (QoS) on your switch. With this feature, you can provide preferential treatment to certain types traffic.

"Configuring EtherChannels," describes how to bundle a set of individual ports into a single logical link on Layer 2 and Layer 3 interfaces.

"Configuring IP Unicast Routing," describes how to configuring IP unicast routing on your switch, including configuring IP addressing features, Routing Information Protocol (RIP), Interior Gateway Routing Protocol (IGRP), Open Shortest Path First (OSPF) protocol, Enhanced IGRP (EIGRP), and Border Gateway Protocol (BGP). It includes configuration information and examples for configuring multiple VPN routing/forwarding (multi-VRF) instances in customer edge (CE) devices.

"Configuring HSRP," describes how to use Hot Standby Router Protocol (HSRP) to provide routing redundancy for routing IP traffic without depending on the availability of any single router.

"Configuring Web Cache Services By Using WCCP," describes how to configure your switch to redirect traffic to cache engines (web caches such as the Cisco Cache Engine 550) by using the Web Cache Communication Protocol (WCCP).

"Configuring IP Multicast Routing," how to configuring IP multicast routing. It describes how to use and configure the Internet Group Management Protocol (IGMP), Protocol-Independent Multicast (PIM) protocol, Cisco Group Management Protocol (CGMP) server functionality, and how to inter-operate between PIM and Distance Vector Multicast Routing Protocol (DVMRP) domains.

"Configuring MSDP," describes how to configure the Multicast Source Discovery Protocol (MSDP), which is a mechanism to connect multiple PIM sparse-mode domains.

"Configuring Fallback Bridging," describes how to configure fallback bridging on your switch. With fallback bridging, you can bridge non-IP protocols between VLAN bridge domains and routed ports.

"Troubleshooting," describes how to identify and resolve software problems related to the IOS software. It also described how to identify connectivity problems.

"Supported MIBs," lists the supported MIBs for this release and how to use FTP to access the MIB files.

"Working with the IOS File System, Configuration Files, and Software Images," describes how to manipulate the Flash file system, how to copy configuration files, and how to archive (upload and download) software images.

"Unsupported CLI Commands in Release 12.1(12c)EA1," lists the unsupported command-line interface (CLI) commands that are displayed when you enter the question mark (?) at the switch prompt. The unsupported commands are listed by software feature and command mode.

Conventions

This publication 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 timesavers 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 from this Cisco.com site:

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/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 "Ordering Documentation" section.

Release Notes for the Catalyst 3550 Multilayer Switch (not orderable but 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 3550 Multilayer Switch Software Configuration Guide (order number DOC-7811194=)

Catalyst 3550 Multilayer Switch Command Reference (order number DOC-7811195=)

Catalyst 3550 Multilayer Switch System Message Guide (order number DOC-7811196=)

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

Catalyst 3550 Multilayer Switch Hardware Installation Guide (order number DOC-7811358=)

1000BASE-T Gigabit Interface Converter Installation Note (not orderable but is available on Cisco.com)

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

Obtaining Documentation

These 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 this URL:

http://www.cisco.com

Translated documentation is available at this 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

You can order Cisco documentation in these ways:

Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from the Networking Products MarketPlace:

http://www.cisco.com/cgi-bin/order/order_root.pl

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 Systems Corporate Headquarters (California, U.S.A.) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

Documentation Feedback

If you are reading Cisco product documentation on the World Wide Web, you can send us your comments by completing the online survey. When you display the document listing for this platform, click Give Us Your Feedback. After you display the survey, select the manual that you wish to comment on. Click Submit to send your comments to the Cisco documentation group.

You can e-mail your comments to bug-doc@cisco.com.

To submit your comments by mail, use the response card behind the front cover of your document, or write to the following address:

Cisco Systems, Inc.
Attn: Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883

We appreciate your comments.

Obtaining Technical Assistance

Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain online 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 with these tasks:

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

If you want to obtain customized information and service, you can self-register on Cisco.com. To access Cisco.com, go to this URL:

http://www.cisco.com

Technical Assistance Center

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

Cisco TAC inquiries 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.

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

Cisco TAC Web Site

You can use the Cisco TAC Web Site 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 this 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 this URL to register:

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

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

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

If you have Internet access, we recommend that you open P3 and P4 cases through the Cisco TAC Web Site.

Cisco TAC Escalation Center

The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues. 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 automatically opens a case.

To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to this 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.