Cisco ASR 9000 Series User manual

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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

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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
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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 1
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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Configuring Gigabit Ethernet and 10-Gigabit Ethernet Interfaces 1-13
Where to Go Next 1-13
CHAPTER 2
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 3
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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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 3-38
Manually Setting the Router Clock 3-38
Examples 3-39
Related Documents 3-40
Where to Go Next 3-40
CHAPTER 4
Contents 4-1
Configuring the Domain Name and Domain Name Server 4-1
Examples 4-3
Configuring Telnet and XML Host Services 4-3
Prerequisites 4-4
Examples 4-5

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Managing Configuration History and Rollback 4-6
Viewing CommitIDs 4-7
Viewing Configuration Changes Recorded in a CommitID 4-7
Previewing Rollback Configuration Changes 4-8
Rolling Back the Configuration to a Specific Rollback Point 4-8
Rolling Back the Configuration over a Specified Number of Commits 4-9
Loading CommitID Configuration Changes to the Target Configuration 4-9
Loading Rollback Configuration Changes to the Target Configuration 4-10
Deleting CommitIDs 4-11
Configuring Logging and Logging Correlation 4-12
Logging Locations and Severity Levels 4-12
Alarm Logging Correlation 4-13
Configuring Basic Message Logging 4-13
Examples 4-14
Related Documents 4-15
Disabling Console Logging 4-15
Creating and Modifying User Accounts and User Groups 4-15
Viewing Details About User Accounts, User Groups, and Task IDs 4-16
Configuring User Accounts 4-17
Creating Users and Assigning Groups 4-17
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 5
Contents 5-1
CLI Tips and Shortcuts 5-1
Entering Abbreviated Commands 5-1

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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 6
Contents 6-1

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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 A
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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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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