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Cisco Systems A9KMOD80TR, ASR 9000, A9K24X10GETR manual System Configurations, High Availability

Models: A9KMOD80TR A9K24X10GETR ASR 9000

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High Availability

Chapter 1 Introducing to the Cisco ASR 9000 Series Aggregation Services Router

System Configurations

F I N A L D R A F T — C i s c o C o n f i d e n t i a l

•MPLS TE Preferred Path: Preferred tunnel path functions let you map pseudowires to specific TE tunnels. Attachment circuits are cross-connected to specific MPLS TE tunnel interfaces instead of remote provider-edge router IP addresses (reachable using Interior Gateway Protocol [IGP] or Label Distribution Protocol [LDP]).

High Availability

The router is intended for use in Enterprise networks that require high-availability. It is designed to provide high MTBF (Mean Time Between Failures) and low MTTR (Mean Time To Resolve) rates. This minimizes outages or and maximizes availability. The router achieves this using the following:

•Component redundancy

–Duplex power supplies

–Cooling systems

•Fault detection

•Management features

•High availability features

–Non-stop forwarding (NSF)—Cisco IOS XR Software supports forwarding without traffic loss during a brief outage of the control plane through signaling and routing protocol implementations for graceful restart extensions as standardized by the IETF, NSF requires neighboring nodes to be NSF-aware.

–Process restartability (minimum disruption restart)

–Stateful switchovers

–In-service software upgrades

–MPLS TE FRR

–Bidirectional Forwarding Detection (BFD)

–Standard IEEE 802.3ad link aggregation bundles

System Configurations

The router runs Cisco IOS XR Software on the following standalone chassis types, available in AC or DC versions:

•a 6-slot chassis

•a 10-slot chassis

Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide

1-6	OL-17502-01

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Cisco Systems A9KMOD80TR System Configurations, High Availability, F I N A L D R A F T - C i s c o C o n f i d e n t i a l

Contents

F I N A L D R A F T - C i s c o C o n f i d e n t i a l Cisco IOS XR Software ReleaseCisco Systems, Inc 170 West Tasman Drive San Jose, CA 800 553-NETS Fax 408CCDE, CCENT, Cisco Eos, Cisco Lumin, Cisco Nexus, Cisco StadiumVision, Cisco TelePresence, Cisco WebEx, the Cisco logo, DCE, and Welcome to the Human Network are trademarks Changing the Way We Work, Live, Play, and Learn and Cisco Store are service marks and Access Registrar, Aironet, AsyncOS, Bringing the Meeting To You, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, CCVP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Collaboration Without Limitation, EtherFast, EtherSwitch, Event Center, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, iQuick Study, IronPort, the IronPort logo, LightStream, Linksys, MediaTone, MeetingPlace, MeetingPlace Chime Sound, MGX, Networkers, Networking Academy, Network Registrar, PCNow, PIX, PowerPanels, ProConnect, ScriptShare, SenderBase, SMARTnet, Spectrum Expert, StackWise, The Fastest Way to Increase Your Internet Quotient, TransPath, WebEx, and the WebEx logo are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries F I N A L D R A F T - C i s c o C o n f i d e n t i a lContents Features and CapabilitiesConnecting to the Router Through the Console Port Initial Router ConfigurationConfiguring Gigabit Ethernet and 10-Gigabit Ethernet Interfaces Where to Go NextEntering Configuration Changes PrerequisitesViewing Configuration Error Messages Without Descriptions Specifying the Management Ethernet Interface Name in CLI CommandsViewing Configuration Details Viewing the Target ConfigurationPreviewing Rollback Configuration Changes Configuring Basic Message LoggingContents Configuration LimitingUsing the Question Mark ? to Display On-Screen Command Help Completing a Partial Command with the Tab KeyFiltering show Command Output Command HistoryContents A-1 Using the ping CommandDisabling Debugging for All Services Started at All Terminal Sessions Configuration Error MessagesComplex Regular Expressions Using Multipliers A-3 Parentheses Used for Pattern Recall A-4Pattern Alternation Anchor CharactersOL-17502-01 ContentsF I N A L D R A F T - C i s c o C o n f i d e n t i a l Obtaining Documentation and Submitting a Service Request, page PrefaceChanges to This Document About This DocumentChapter 3, “Configuring General Router Features” Chapter 4, “Configuring Additional Router Features”Chapter 6, “Troubleshooting the Cisco IOS XR Software” Intended AudienceOption Network Preferences Obtaining Documentation and Submitting a Service RequestF I N A L D R A F T - C i s c o C o n f i d e n t i a l boldface fontOL-17502-01 F I N A L D R A F T - C i s c o C o n f i d e n t i a lPreface Introducing to the Cisco ASR 9000 Series Aggregation Services Router ContentsFeatures and Capabilities Router Overview, page System Configurations, pageCommand-Line Interface, page Extensible Markup Language API, page Cisco IOS XR SoftwareMulticast, page OAM, page Layer 3 routing, page QoS, page MPLS TE, page Manageability, page Security, pageFlexible Ethernet F I N A L D R A F T - C i s c o C o n f i d e n t i a lF I N A L D R A F T - C i s c o C o n f i d e n t i a l L2VPNMulticast Layer 3 routing MPLS VPNMPLS TE F I N A L D R A F T - C i s c o C o n f i d e n t i a lF I N A L D R A F T - C i s c o C o n f i d e n t i a l System ConfigurationsHigh Availability F I N A L D R A F T - C i s c o C o n f i d e n t i a l The router uses the following line cards 40x1GE Ethernet line cardF I N A L D R A F T - C i s c o C o n f i d e n t i a l Management and SecurityManageability Initial Router Configuration Management InterfacesSecurity F I N A L D R A F T - C i s c o C o n f i d e n t i a lCommand-Line Interface Extensible Markup Language APISimple Network Management Protocol 1-10Connecting to the Router Through the Console Port 6. admin 7. show dscSUMMARY STEPS 2. Connect a terminal to the Console portDETAILED STEPS Documents” section on page1-12 Command or ActionWhere to Go Next Configuring Gigabit Ethernet and 10-Gigabit Ethernet Interfacespage 1-13F I N A L D R A F T - C i s c o C o n f i d e n t i a l 1-14Where to Go Next Prerequisites, page Bringing Up and Configuring the Router, page Verifying the System After Initial Boot, page Where to Go Next, pageBringing Up Cisco IOS XR Software on the Router PrerequisitesBringing Up and Configuring the Router Software RequirementsHardware Prerequisites and Documentation F I N A L D R A F T - C i s c o C o n f i d e n t i a lthe “Connecting to the Router Through the Console ExamplesPort” section on page EnterVerifying the System After Initial Boot 1. show version 2. admin 3. show platform node-id 4. exit5. show redundancy 6. show environment F I N A L D R A F T - C i s c o C o n f i d e n t i a lExamples of show Commands show version Command Exampleshow version Command Example, page show platform Command Example, pageF I N A L D R A F T - C i s c o C o n f i d e n t i a l show platform Command Exampleshow redundancy Command Example show environment Command Example show environment optionsVerifying the System After Initial Boot F I N A L D R A F T - C i s c o C o n f i d e n t i a lWhere to Go Next Where to Go NextF I N A L D R A F T - C i s c o C o n f i d e n t i a l Chapter 2 Bringing Up Cisco IOS XR Software on the RouterConfiguring General Router Features Connecting to and Communicating with the RouterConnecting to and Communicating with the Router, page Navigating Cisco IOS XR Software Command Modes, pageConnecting Through the Console Port Connecting Through the Console Port, pageConnecting Through a Terminal Server, page Connecting Through the Management Ethernet Interface, pageConnecting Through a Terminal Server 5. telnet access-server-address porta Router” section on page described in the “CLI Prompt” section on pageAggregation Services Router System Management Configuration Guidesection on page documentation listed in the “Related Documents” section on pageConnecting Through the Management Ethernet Interface Logging In to a Routertelnet ManagementEthernetInterfaceIPaddress F I N A L D R A F T - C i s c o C o n f i d e n t i a lSlot in which the RSP is installed. In a Cisco ASR 9000 Series router Entity on a card that executes user commands or communicates witha port interface. For executing commands from the EXEC prompt initial configuration of the router, as described in the “ConfiguringUser Access Privileges User Groups, Task Groups, and Task IDsUser Groups, Task Groups, and Task IDs, page Predefined User Groups, pageshow user Command Example, page show user tasks Command Example, page show user group Command Example, pageshow user all Command Example, page show aaa usergroup Command Example, pageshow user Command Example show user tasks Command Exampleshow user group Command Example show user all Command Exampleshow aaa usergroup Command Example 3-10Chapter 3 Configuring General Router Features Logging In to a Router F I N A L D R A F T - C i s c o C o n f i d e n t i a lNavigating Cisco IOS XR Software Command Modes Identifying the Command Mode in the CLI Prompt, pageCommon Command Modes, page Entering EXEC Commands from a Configuration Mode, pageIdentifying the Command Mode in the CLI Prompt Common Command Modes3-12 F I N A L D R A F T - C i s c o C o n f i d e n t i a lprotocol protocoloptions 3-13Command Mode F I N A L D R A F T - C i s c o C o n f i d e n t i a lF I N A L D R A F T - C i s c o C o n f i d e n t i a l Entering EXEC Commands from a Configuration Mode3-14 F I N A L D R A F T - C i s c o C o n f i d e n t i a l Command Mode Navigation Example3-15 F I N A L D R A F T - C i s c o C o n f i d e n t i a l Managing Configuration Sessions3-16 Entering Configuration Changes Entering Configuration Changes, pageViewing Active Configuration Sessions, page Starting a Configuration Session, page1. configure 3. end or commit3. commit 3-18Viewing Active Configuration Sessions 4. end3-19 F I N A L D R A F T - C i s c o C o n f i d e n t i a lStarting a Configuration Session Simple RSP Configuration ExampleSimple RSP Configuration Example, page Simple Administration Configuration Session Example, pageStarting an Exclusive Configuration Session Viewing Configuration DetailsSimple Administration Configuration Session Example Viewing the Running Configuration, pageViewing the Running Configuration Viewing a Sanitized Version of the Running Configuration, pageViewing the Target Configuration, page Viewing a Combined Target and Running Configuration, pageF I N A L D R A F T - C i s c o C o n f i d e n t i a l Viewing a Sanitized Version of the Running Configuration3-23 F I N A L D R A F T - C i s c o C o n f i d e n t i a l Viewing the Target Configuration3-24 F I N A L D R A F T - C i s c o C o n f i d e n t i a l Viewing a Combined Target and Running Configuration3-25 Saving the Target Configuration to a File Viewing Configuration Error Messages and DescriptionsViewing Configuration Error Messages Without Descriptions 3-26Loading the Target Configuration from a File Loading an Alternative Configuration at System StartupClearing All Changes to a Target Configuration 3-27Committing Changes to the Running Configuration commitcommit best-effort 3-28Command show configuration commit list detail commandThe comment option must appear at the end of the command line. If Optional Commits the configuration in global configuration mode on aReloading a Failed Configuration Committing a Configuration from Global Configuration Mode Example3-30 F I N A L D R A F T - C i s c o C o n f i d e n t i a lExiting a Configuration Submode Returning Directly to Configuration Mode from a SubmodeEnding a Configuration Session 3-31Configuring the RSP Hostname Aborting a Configuration Session3-32 F I N A L D R A F T - C i s c o C o n f i d e n t i a lConfiguring the Management Ethernet Interface Specifying the Management Ethernet Interface Name in CLI Commandsrouterconfig# interface MgmtEth0/RSP0/CPU0/0 routerconfig# interface MgmtEth0/RSP1/CPU0/0routerconfig# interface MgmtEth0/5/CPU0/0 routerconfig# interface MgmtEth0/5/CPU1/0routerconfig# interface MgmtEth0/0/CPU0/0 routerconfig# interface MgmtEth0/0/CPU0/1Configuring the Management Ethernet Interface 1. configure 2. interface MgmtEthrack/slot/CPU0/portPrerequisites 3. ipv4 address ipv4-address subnet-mask0.0.0.0/0 default-gateway 3-36F I N A L D R A F T - C i s c o C o n f i d e n t i a l ipv4 address ipv4-address subnet-maskF I N A L D R A F T - C i s c o C o n f i d e n t i a l 3-37Examples Manually Setting the Router Clock Cisco ASR 9000 Series Aggregation Services RouterInterface and Hardware Component Configuration Guide 6. clock update-calendar 7. show clock3-39 RP/0/RSP0/CPU0routerconfig# clock timezoneExamples F I N A L D R A F T - C i s c o C o n f i d e n t i a lCisco ASR 9000 Series Aggregation Services Router System Management Command ReferenceManagement Configuration Guide 3-40Configuring Additional Router Features Configuring the Domain Name and Domain Name ServerConfiguring the Domain Name and Domain Name Server, page Configuring Telnet and XML Host Services, page2. domain name domain-name-of-organization 3. domain name-server ipv4-address 4. commit or end 5. show hosts1. configure F I N A L D R A F T - C i s c o C o n f i d e n t i a lConfiguring Telnet and XML Host Services Configuring Telnet and XML Host ServicesExamples F I N A L D R A F T - C i s c o C o n f i d e n t i a l1. configure 2. telnet ipv4 server max-servers limit 3. end or commit PrerequisitesF I N A L D R A F T - C i s c o C o n f i d e n t i a l SUMMARY STEPSDETAILED STEPS ExamplesF I N A L D R A F T - C i s c o C o n f i d e n t i a l Managing Configuration History and Rollback Viewing Configuration Changes Recorded in a CommitID, pagePreviewing Rollback Configuration Changes, page Rolling Back the Configuration to a Specific Rollback Point, pageViewing Configuration Changes Recorded in a CommitID Viewing CommitIDsRP/0/RSP1/CPU0router# show configuration commit list RP/0/RSP1/CPU0routeradmin# show configuration commit changes ?Previewing Rollback Configuration Changes Rolling Back the Configuration to a Specific Rollback PointRP/0/RSP1/CPU0router# show configuration rollback changes to ? RP/0/RSP1/CPU0router# show configuration rollback changes toRolling Back the Configuration over a Specified Number of Commits Loading CommitID Configuration Changes to the Target Configurationrollback changes command F I N A L D R A F T - C i s c o C o n f i d e n t i a lLoading Rollback Configuration Changes to the Target Configuration 4-10RP/0/RSP1/CPU0router# show configuration commit changes ? F I N A L D R A F T - C i s c o C o n f i d e n t i a lDeleting CommitIDs 4-11RP/0/RSP0/CPU0routerconfig# load rollback changes to RP/0/RSP0/CPU0routerconfig# load rollback changesConfiguring Logging and Logging Correlation Alarm Logging Correlation, pageConfiguring Basic Message Logging, page Logging Locations and Severity LevelsAlarm Logging Correlation Configuring Basic Message Logging2. logging ip-address hostname 3. logging trap severity 4. logging console severity4-14 RP/0/RSP0/CPU0routerconfig# logging bufferedExamples F I N A L D R A F T - C i s c o C o n f i d e n t i a lCisco ASR 9000 Series Aggregation Services Router System Monitoring Configuration GuideCommand Reference Cisco ASR 9000 Series Aggregation Services Router XML API Guidecommand without a username group. To display all groups on the system, type the commandViewing Details About User Accounts, User Groups, and Task IDs show aaa userdb usernameConfiguring User Accounts 1. configure 2. username user-name 3. password 0 7 password orsecret 0 5 password Creating Users and Assigning GroupsCisco ASR 9000 Series Aggregation Services Router System Security 4-18Configuration Guide Related DocumentsConfiguring Software Entitlement Configuration LimitingStatic Route Configuration Limits, page IS-IS Configuration Limits, pageStatic Route Configuration Limits IS-IS Configuration Limitsshow running-config router static Maximum static IPv4 routesOSPFv2 and v3 Configuration Limits show running-config router ospfMaximum Interfaces for Each OSPF Instance Example maximum interfaces nF I N A L D R A F T - C i s c o C o n f i d e n t i a l Maximum Routes Redistributed into OSPF Example4-22 Routing Policy Language Line and Policy Limits Number of Parallel Links max-paths ExampleMaximum number of RPL lines 65,536Multicast Configuration Limits maximum groups nshow igmp summary maximum groups-per-interface nMPLS Configuration Limits Other Configuration LimitsGlobal Configuration Default4-26 Chapter 4 Configuring Additional Router FeaturesConfiguration Limiting F I N A L D R A F T - C i s c o C o n f i d e n t i a lEntering Abbreviated Commands Viewing System Information with show Commands, pageWildcards, Templates, and Aliases, page Command History, page Entering Abbreviated Commands, pageUsing the Question Mark ? to Display On-Screen Command Help partial-command?Note Do not include a space between the command and question mark Lists all commands available for a particular command modeF I N A L D R A F T - C i s c o C o n f i d e n t i a l The number ranges within the angle brackets are inclusive rangesCompleting a Partial Command with the Tab Key Identifying Command Syntax ErrorsUsing the no Form of a Command F I N A L D R A F T - C i s c o C o n f i d e n t i a lViewing System Information with show Commands Editing Command Lines that WrapCommon show Commands, page Browsing Display Output when the --More-- Prompt Appears, pageCommon show Commands Browsing Display Output when the --More-- Prompt Appearsshow configuration show running-config EXEC orHalting the Display of Screen Output Redirecting Output to a Fileshow command file filename F I N A L D R A F T - C i s c o C o n f i d e n t i a lNarrowing Output from Large Configurations Limiting show Command Output to a Specific Feature or InterfaceUsing Wildcards to Display All Instances of an Interface Limiting show Command Output to a Specific Feature or Interface, pageFiltering show Command Output F I N A L D R A F T - C i s c o C o n f i d e n t i a lF I N A L D R A F T - C i s c o C o n f i d e n t i a l Adding a Filter at the --More-- Prompt5-10 Show Parser Dump Enhancement Feature Using Wildcards to Identify Interfaces in show Commands, pageCreating Configuration Templates, page Aliases, page Keystrokes Used as Command Aliases, pageUsing Wildcards to Identify Interfaces in show Commands Examplegi0/1 gi0/3/4Creating Configuration Templates 2. template template-name $parameter $parameter... config-commands6. show running-config template template-name 4. end-template 5. commit5-14 $parameter... config-commandsRP/0/RSP0/CPU0routerconfig# template tmplt1 RP/0/RSP0/CPU0routerconfig-TPL# end-templateApplying Configuration Templates 5-15Examples ExamplesName of the command alias. An alias name can be a single word or command-syntaxOriginal command syntax. Valid abbreviations of the original command syntax can be entered for the command-syntax argumentCommand History Keystrokes Used as Command AliasesViewing Previously Entered Commands Recalling Previously Entered CommandsRedisplaying the Command Line Key CombinationsRecalling Deleted Entries Key Combinations to Move the Cursor, pageKey Combinations to Move the Cursor Keystrokes to Control Capitalization5-19 F I N A L D R A F T - C i s c o C o n f i d e n t i a lKeystrokes to Delete CLI Entries Transposing Mistyped Characters5-20 F I N A L D R A F T - C i s c o C o n f i d e n t i a lTroubleshooting the Cisco IOS XR Software Basic Troubleshooting CommandsBasic Troubleshooting Commands, page Configuration Error Messages, pageUsing show Commands to Display System Status and Configuration Using the ping CommandUsing debug Commands, page ExamplesUsing the traceroute Command Using debug CommandsViewing a List of Debug Features, page Enabling Debugging for a Feature, page Viewing Debugging Status, pageViewing a List of Debug Features Enabling Debugging for a FeatureAAA Authentication, Authorization and Accounting DRP Pairing debug Display debugging messages of drppairingF I N A L D R A F T - C i s c o C o n f i d e n t i a l Disabling Debugging for a ServiceViewing Debugging Status Configuration Error Messages Configuration Failures During a Commit OperationDisabling Debugging for All Services Started at All Terminal Sessions Configuration Failures During a Commit Operation, pageMemory Warnings in Configuration Sessions Configuration Errors at StartupUnderstanding Low-Memory Warnings in Configuration Sessions Understanding Low-Memory Warnings in Configuration Sessions, page“ERROR! MEMORY IS IN SEVERE or CRITICAL STATE” Viewing System Memory Information“WARNING! MEMORY IS IN MINOR STATE” F I N A L D R A F T - C i s c o C o n f i d e n t i a lRemoving Configurations to Resolve Low-Memory Warnings Clearing a Target Configuration, pageRemoving Committed Configurations to Free System Memory, page Rolling Back to a Previously Committed Configuration, pageClearing a Target Configuration Removing Committed Configurations to Free System MemoryRolling Back to a Previously Committed Configuration 6-10Clearing Configuration Sessions show configuration sessionsDisplays the active configuration sessions clear configuration sessions session-idF I N A L D R A F T - C i s c o C o n f i d e n t i a l Verifying System Interfaces6-12 6-13 Chapter 6 Troubleshooting the Cisco IOS XR SoftwareRP/0/RSP0/CPU0router# show running-config interface gi0/2/0/3 F I N A L D R A F T - C i s c o C o n f i d e n t i a lconnection 6-14F I N A L D R A F T - C i s c o C o n f i d e n t i a l Complex Regular Expressions Using Multipliers, page A-3 Understanding Regular Expressions, Special Characters, and PatternsRegular Expressions A P P E N D I X ASpecial Characters Character Pattern Ranges\$ \ \+ a-dA-DComplex Regular Expressions Using Multipliers Multiple-Character Patternsba?b A-Za-z0-9+Pattern Alternation Anchor CharactersUnderscore Wildcard Parentheses Used for Pattern Recalla.bc.\1\2 F I N A L D R A F T - C i s c o C o n f i d e n t i a lF I N A L D R A F T - C i s c o C o n f i d e n t i a l Parentheses Used for Pattern Recall