Cisco Router IOS XR Manuale utente

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Cisco IOS XR Getting Started Guide

Cisco IOS XR Software Release 3.4

Text Part Number: OL-10957-02

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CONTENTS

Preface ix

Changes to This Document ix

About This Document ix

Intended Audience x

Organization of the Document x

Related Documents x

Conventions xi

Obtaining Documentation xi

Cisco.com xi

Product Documentation DVD xii

Ordering Documentation xii

Documentation Feedback xii

Cisco Product Security Overview xii

Reporting Security Problems in Cisco Products xiii

Product Alerts and Field Notices xiii

Obtaining Technical Assistance xiv

Cisco Technical Support & Documentation Website xiv

Submitting a Service Request xv

Definitions of Service Request Severity xv

Obtaining Additional Publications and Information xv

CHAPTER

1Introduction to Cisco IOS XR Software 1-1

Contents 1-1

Supported Standalone System Configurations 1-1

Cisco CRS-1 Multishelf System Overview 1-2

Router Management Interfaces 1-6

Command-Line Interface 1-6

Craft Works Interface 1-6

Extensible Markup Language API 1-6

Simple Network Management Protocol 1-7

Selecting and Identifying the Designated Shelf Controller 1-7

Selecting and Identifying the DSC on Cisco CRS-1 Routers 1-8

Selecting and Identifying the DSC on Cisco CRS-1 Multishelf Systems 1-8

Selecting and Identifying the DSC on Cisco XR 12000 and 12000 Series Routers 1-9

Contents

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Connecting to the Router Through the Console Port 1-9

Where to Go Next 1-14

CHAPTER

2Bringing Up the Cisco IOS XR Software on a Standalone Router 2-1

Contents 2-1

Prerequisites 2-1

Software Requirements 2-1

Hardware Prerequisites and Documentation 2-2

Bringing Up and Configuring a Standalone Router 2-2

Verifying the System After Initial Bring-Up 2-4

Where to Go Next 2-8

CHAPTER

3Bringing Up the Cisco IOS XR Software on a Multishelf System 3-1

Contents 3-1

Prerequisites 3-1

Software Requirements 3-1

Hardware Requirements 3-2

Restrictions 3-2

Information About Bringing Up a Multishelf System 3-3

Bringup Overview 3-3

Preparing a Rack Number Plan 3-3

Configuring the External Cisco Catalyst 6509 Switches 3-8

Prerequisites 3-9

Restrictions 3-10

Before You Begin 3-10

Information About the Catalyst Switch Configuration 3-11

Configuring the Catalyst Switches 3-11

Verifying the Catalyst Switch 3-18

Integrated Switch System 3-20

Prerequisites for an Integrated Switch System 3-20

Restrictions for an Integrated Switch System 3-21

Before You Begin 3-21

Information About the Integrated Switch Implementation 3-21

Implementing the Integrated Switch System 3-23

Verifying the Connections of the Integrated Switch Control Network 3-25

Bringing Up and Configuring Rack 0 3-28

Bringing Up and Verifying FCCs 3-34

Bringing Up and Verifying the Non-DSC LCC 3-37

Contents

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Verifying the Spanning Tree 3-39

Verifying Fabric Cabling Connections 3-43

Where to Go Next 3-47

CHAPTER

4Configuring General Router Features 4-1

Contents 4-1

Secure Domain Routers 4-1

Connecting and Communicating with the Router 4-2

Establishing a Connection Through the Console Port 4-6

Establishing a Connection Through a Terminal Server 4-8

Establishing a Connection Through the Management Ethernet Interface 4-10

Logging In to a Router or an SDR 4-11

CLI Prompt 4-12

User Access Privileges 4-13

User Groups, Task Groups, and Task IDs 4-13

Predefined User Groups 4-14

Displaying the User Groups and Task IDs for Your User Account 4-14

Navigating the Cisco IOS XR Command Modes 4-17

Identifying the Command Mode in the CLI Prompt 4-18

Summary of Common Command Modes 4-19

Entering EXEC Commands from a Configuration Mode 4-21

Command Mode Navigation Example 4-22

Managing Configuration Sessions 4-23

Displaying the Active Configuration Sessions 4-24

Starting a Configuration Session 4-25

Starting an Exclusive Configuration Session 4-26

Displaying Configuration Details with show Commands 4-26

Saving the Target Configuration to a File 4-33

Loading the Target Configuration from a File 4-33

Loading an Alternative Configuration at System Startup 4-33

Clearing All Changes to a Target Configuration 4-34

Committing Changes to the Running Configuration 4-34

Reloading a Failed Configuration 4-36

Exiting a Configuration Submode 4-37

Returning Directly to Configuration Mode from a Submode 4-37

Ending a Configuration Session 4-37

Aborting a Configuration Session 4-38

Configuring the SDR Hostname 4-38

Contents

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Configuring the Management Ethernet Interface 4-39

Specifying the Management Ethernet Interface Name in CLI Commands 4-39

Displaying the Available Management Ethernet Interfaces 4-40

Configuring the Management Ethernet Interface 4-41

Manually Setting the Router Clock 4-44

Where to Go Next 4-46

CHAPTER

5Configuring Additional Router Features 5-1

Contents 5-1

Configuring the Domain Name and Domain Name Server 5-1

Configuring Telnet, HTTP, and XML Host Services 5-2

Prerequisites 5-2

Managing Configuration History and Rollback 5-3

Displaying the CommitIDs 5-4

Displaying the Configuration Changes Recorded in a CommitID 5-4

Previewing Rollback Configuration Changes 5-5

Rolling Back the Configuration to a Specific Rollback Point 5-6

Rolling Back the Configuration over a Specified Number of Commits 5-6

Loading CommitID Configuration Changes to the Target Configuration 5-7

Loading Rollback Configuration Changes to the Target Configuration 5-8

Deleting CommitIDs 5-8

Configuring Logging and Logging Correlation 5-9

Logging Locations and Severity Levels 5-9

Alarm Logging Correlation 5-10

Configuring Basic Message Logging 5-10

Disabling Console Logging 5-12

Creating and Modifying User Accounts and User Groups 5-13

Displaying Details About User Accounts, User Groups, and Task IDs 5-13

Configuring User Accounts 5-14

Creating Users and Assigning Groups 5-14

Configuration Limiting 5-16

Static Route Configuration Limits 5-16

IS-IS Configuration Limits 5-17

OSPFv2 and v3 Configuration Limits 5-17

BGP Configuration Limits 5-20

Routing Policy Language Line and Policy Limits 5-21

Multicast Configuration Limits 5-23

MPLS Configuration Limits 5-23

Other Configuration Limits 5-24

Contents

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CHAPTER

6CLI Tips, Techniques, and Shortcuts 6-1

Contents 6-1

CLI Tips and Shortcuts 6-1

Entering Abbreviated Commands 6-2

Using the Question Mark (?) to Display On-Screen Command Help 6-2

Completing a Partial Command with the Tab Key 6-4

Identifying Command Syntax Errors 6-4

Using the no Form of a Command 6-5

Editing Command Lines that Wrap 6-5

Displaying System Information with show Commands 6-5

Common show Commands 6-6

Browsing Display Output when the --More-- Prompt Appears 6-7

Halting the Display of Screen Output 6-7

Redirecting Output to a File 6-8

Narrowing Output from Large Configurations 6-8

Filtering show Command Output 6-9

Wildcards, Templates, and Aliases 6-11

Using Wildcards to Identify Interfaces in show Commands 6-11

Creating Configuration Templates 6-12

Applying Configuration Templates 6-14

Aliases 6-15

Keystrokes Used as Command Aliases 6-16

Command History 6-16

Displaying Previously Entered Commands 6-16

Recalling Previously Entered Commands 6-17

Recalling Deleted Entries 6-17

Redisplaying the Command Line 6-17

Key Combinations 6-18

Key Combinations to Move the Cursor 6-18

Keystrokes to Control Capitalization 6-18

Keystrokes to Delete CLI Entries 6-19

Transposing Mistyped Characters 6-19

CHAPTER

7Troubleshooting the Cisco IOS XR Software 7-1

Contents 7-1

Additional Sources for Information 7-1

Basic Troubleshooting Commands 7-1

Using show Commands to Display System Status and Configuration 7-2

Contents

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Using the ping Command 7-3

Using the traceroute Command 7-4

Using debug Commands 7-5

Configuration Error Messages 7-7

Configuration Failures During a Commit Operation 7-8

Configuration Errors at Startup 7-8

Memory Warnings in Configuration Sessions 7-9

Understanding Low-Memory Warnings in Configuration Sessions 7-9

Displaying System Memory Information 7-10

Removing Configurations to Resolve Low-Memory Warnings 7-11

Contacting TAC for Additional Assistance 7-13

Interfaces Not Coming Up 7-13

Verifying the System Interfaces 7-13

APPENDIX

AUnderstanding Regular Expressions, Special Characters, and Patterns A-1

Regular Expressions A-1

Special Characters A-2

Character Pattern Ranges A-2

Multiple-Character Patterns A-3

Complex Regular Expressions Using Multipliers A-3

Pattern Alternation A-4

Anchor Characters A-4

Underscore Wildcard A-4

Parentheses Used for Pattern Recall A-4

LOSSARY

NDEX

Cisco IOS XR Getting Started Guide

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Preface

This guide describes how to create the initial configuration for a router using the

Cisco IOS XR software. This guide also describes how to complete additional administration,

maintenance, and troubleshooting tasks that may be required after initial configuration.

This preface contains the following sections:

•Changes to This Document, page ix

•About This Document, page ix

•Obtaining Documentation, page xi

•Documentation Feedback, page xii

•Cisco Product Security Overview, page xii

•Product Alerts and Field Notices, page xiii

•Obtaining Technical Assistance, page xiv

•Obtaining Additional Publications and Information, page xv

Changes to This Document

Table 1 lists the technical changes made to this document since it was first printed.

About This Document

The following sections provide information about Cisco IOS XR Getting Started Guide and related

documents:

Table 1 Changes to This Document

Revision Date Change Summary

OL-10957-02 February 2007 Chapter 3, “Bringing Up the Cisco IOS XR Software on a

Multishelf System” was modified as follows:

•Added the 22-port shelf controller Gigabit Ethernet (22-port

SCGE) card. See “Integrated Switch System” section on

page 20.

OL-10957-01 October 2006 Initial release of the document.

Cisco IOS XR Getting Started Guide

OL-10957-02

Preface

About This Document

•Intended Audience, page x

•Organization of the Document, page x

•Related Documents, page x

•Conventions, page xi

Intended Audience

This document is intended for the following people:

•Experienced service provider administrators

•Cisco telecommunications management engineers

•Third-party field service technicians who have completed the Cisco IOS XR software training

sessions

•Customers who daily use and manage routers running Cisco IOS XR software

Organization of the Document

This document contains the following chapters:

•Chapter 1, “Introduction to Cisco IOS XR Software”

•Chapter 2, “Bringing Up the Cisco IOS XR Software on a Standalone Router”

•Chapter 3, “Bringing Up the Cisco IOS XR Software on a Multishelf System”

•Chapter 4, “Configuring General Router Features”

•Chapter 5, “Configuring Additional Router Features”

•Chapter 6, “CLI Tips, Techniques, and Shortcuts”

•Chapter 7, “Troubleshooting the Cisco IOS XR Software”

•Appendix A, “Understanding Regular Expressions, Special Characters, and Patterns”

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