Cisco ASR 9000 Series Manuale utente

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Cisco ASR 9000 Series Aggregation

Services Router Getting Started Guide

Cisco IOS XR Software Release 3.7

Text Part Number: OL-17502-01

FINAL DRAFT —Cisco Confidential

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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

FINAL DRAFT - Cisco Confidential

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

OL-17502-01

CONTENTS

Preface vii

Changes to This Document vii

About This Document vii

Intended Audience viii

Organization of the Document viii

Related Documents viii

Conventions viii

Obtaining Documentation and Submitting a Service Request ix

CHAPTER

Contents 1-1

Router Overview 1-1

Features and Capabilities 1-1

Cisco IOS XR Software 1-2

Flexible Ethernet 1-3

L2VPN 1-4

Multicast 1-4

OAM 1-4

Layer 3 routing 1-5

MPLS VPN 1-5

QoS 1-5

MPLS TE 1-5

High Availability 1-6

System Configurations 1-6

Management and Security 1-8

Manageability 1-8

Security 1-9

Initial Router Configuration 1-9

Management Interfaces 1-9

Command-Line Interface 1-10

Extensible Markup Language API 1-10

Simple Network Management Protocol 1-10

Connecting to the Router Through the Console Port 1-11

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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

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Configuring Gigabit Ethernet and 10-Gigabit Ethernet Interfaces 1-13

Where to Go Next 1-13

CHAPTER

Contents 2-1

Prerequisites 2-1

Software Requirements 2-2

Hardware Prerequisites and Documentation 2-2

Bringing Up and Configuring the Router 2-2

Examples 2-3

Verifying the System After Initial Boot 2-4

Examples of show Commands 2-5

Where to Go Next 2-8

CHAPTER

Contents 3-1

Connecting to and Communicating with the Router 3-1

Connecting Through the Console Port 3-2

Connecting Through a Terminal Server 3-3

Connecting Through the Management Ethernet Interface 3-5

Logging In to a Router 3-5

CLI Prompt 3-6

User Access Privileges 3-7

User Groups, Task Groups, and Task IDs 3-7

Predefined User Groups 3-8

Viewing Your User Groups and Task IDs 3-8

Examples 3-8

Navigating Cisco IOS XR Software Command Modes 3-11

Identifying the Command Mode in the CLI Prompt 3-12

Common Command Modes 3-12

Entering EXEC Commands from a Configuration Mode 3-14

Command Mode Navigation Example 3-15

Managing Configuration Sessions 3-16

Entering Configuration Changes 3-17

Viewing Active Configuration Sessions 3-19

Starting a Configuration Session 3-20

Examples 3-20

Starting an Exclusive Configuration Session 3-21

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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

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Viewing Configuration Details 3-21

Viewing the Running Configuration 3-22

Viewing a Sanitized Version of the Running Configuration 3-23

Viewing the Target Configuration 3-24

Viewing a Combined Target and Running Configuration 3-25

Viewing Configuration Error Messages and Descriptions 3-26

Viewing Configuration Error Messages Without Descriptions 3-26

Viewing Configuration Error Messages Produced While Loading a Configuration 3-26

Saving the Target Configuration to a File 3-26

Loading the Target Configuration from a File 3-27

Loading an Alternative Configuration at System Startup 3-27

Clearing All Changes to a Target Configuration 3-27

Committing Changes to the Running Configuration 3-28

Examples 3-29

Reloading a Failed Configuration 3-30

Exiting a Configuration Submode 3-31

Returning Directly to Configuration Mode from a Submode 3-31

Ending a Configuration Session 3-31

Aborting a Configuration Session 3-32

Configuring the RSP Hostname 3-32

Configuring the Management Ethernet Interface 3-33

Specifying the Management Ethernet Interface Name in CLI Commands 3-33

Viewing the Available Management Ethernet Interfaces 3-34

Configuring the Management Ethernet Interface 3-35

Prerequisites 3-35

Examples 3-37

Related Documents 4-18

Configuring Software Entitlement 4-19

Configuration Limiting 4-19

Static Route Configuration Limits 4-20

Examples 4-20

IS-IS Configuration Limits 4-20

Examples 4-20

OSPFv2 and v3 Configuration Limits 4-21

Examples 4-21

Routing Policy Language Line and Policy Limits 4-23

Examples 4-23

Multicast Configuration Limits 4-24

MPLS Configuration Limits 4-25

Other Configuration Limits 4-25

CHAPTER

Contents 5-1

CLI Tips and Shortcuts 5-1

Entering Abbreviated Commands 5-1

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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

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Using the Question Mark (?) to Display On-Screen Command Help 5-2

Completing a Partial Command with the Tab Key 5-4

Identifying Command Syntax Errors 5-4

Using the no Form of a Command 5-4

Editing Command Lines that Wrap 5-5

Viewing System Information with show Commands 5-5

Common show Commands 5-6

Browsing Display Output when the --More-- Prompt Appears 5-6

Halting the Display of Screen Output 5-7

Redirecting Output to a File 5-7

Narrowing Output from Large Configurations 5-8

Limiting show Command Output to a Specific Feature or Interface 5-8

Using Wildcards to Display All Instances of an Interface 5-8

Filtering show Command Output 5-9

Adding a Filter at the --More-- Prompt 5-10

Multipipe Support 5-11

Show Parser Dump Enhancement Feature 5-11

Wildcards, Templates, and Aliases 5-11

Using Wildcards to Identify Interfaces in show Commands 5-12

Example 5-12

Creating Configuration Templates 5-13

Examples 5-15

Applying Configuration Templates 5-15

Examples 5-15

Aliases 5-16

Keystrokes Used as Command Aliases 5-17

Command History 5-17

Viewing Previously Entered Commands 5-17

Recalling Previously Entered Commands 5-17

Recalling Deleted Entries 5-18

Redisplaying the Command Line 5-18

Key Combinations 5-18

Key Combinations to Move the Cursor 5-19

Keystrokes to Control Capitalization 5-19

Keystrokes to Delete CLI Entries 5-20

Transposing Mistyped Characters 5-20

CHAPTER

Contents 6-1

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Contents

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

OL-17502-01

Additional Sources for Information 6-1

Basic Troubleshooting Commands 6-1

Using show Commands to Display System Status and Configuration 6-2

Using the ping Command 6-2

Examples 6-2

Using the traceroute Command 6-3

Examples 6-3

Using debug Commands 6-3

Viewing a List of Debug Features 6-4

Enabling Debugging for a Feature 6-4

Viewing Debugging Status 6-5

Disabling Debugging for a Service 6-5

Disabling Debugging for All Services Started at the Active Terminal Session 6-5

Disabling Debugging for All Services Started at All Terminal Sessions 6-6

Configuration Error Messages 6-6

Configuration Failures During a Commit Operation 6-6

!Configuration Errors at Startup 6-7

Memory Warnings in Configuration Sessions 6-7

Understanding Low-Memory Warnings in Configuration Sessions 6-7

“WARNING! MEMORY IS IN MINOR STATE” 6-8

“ERROR! MEMORY IS IN SEVERE (or CRITICAL) STATE” 6-8

Viewing System Memory Information 6-8

Removing Configurations to Resolve Low-Memory Warnings 6-9

Clearing a Target Configuration 6-10

Removing Committed Configurations to Free System Memory 6-10

Rolling Back to a Previously Committed Configuration 6-10

Clearing Configuration Sessions 6-11

Contacting TAC for Additional Assistance 6-11

Interfaces Not Coming Up 6-11

Verifying System Interfaces 6-12

APPENDIX

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

Contents A-1

Regular Expressions A-1

Special Characters A-2

Character Pattern Ranges A-2

Multiple-Character Patterns A-3

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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

OL-17502-01

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

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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

OL-17502-01

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