Cisco Systems Cisco IOS XR guide

Chapter 5 Configuring Additional Router Features

Managing Configuration History and Rollback

Loading CommitID Configuration Changes to the Target Configuration

If the changes saved for a specific commitID are close to what you want, but a rollback is not appropriate, you can load the configuration changes for a commitID into the target configuration, modify the target configuration, and then commit the new configuration. Unlike the rollback process, the loaded changes are not applied until you commit them.

Note Unlike the rollback process, loading the commitID configuration changes loads only the changes made during that commit operation. The load process does not load all changes made between the commitID and the current committed configuration.

To load commitID changes in the target configuration, go to global configuration or administration configuration mode and enter the load commit changes command with the commitID number. In the following example, show commands are used to display the changes for a commitID, the commitID configuration is loaded into the target configuration, and the target configuration is displayed:

RP/0/RP1/CPU0:router# show configuration commit changes ?

last	Changes made in the most recent <n> commits
since	Changes made since (and including) a specific commit
1000000217	Commit ID
1000000218	Commit ID
1000000219	Commit ID
1000000220	Commit ID
1000000221	Commit ID

RP/0/RP1/CPU0:router# show configuration commit changes 1000000219 Building configuration...

interface Loopback100

!

interface POS0/1/0/0 ipv6 nd dad attempts 50

!

end

RP/0/RP1/CPU0:router# config

RP/0/RP1/CPU0:router(config)# load commit changes 1000000219

Building configuration...

Loading.

77 bytes parsed in 1 sec (76)bytes/sec

RP/0/RP1/CPU0:router(config)# show configuration

Building configuration...

interface Loopback100

!

interface POS0/1/0/0 ipv6 nd dad attempts 50

!

end

Cisco IOS XR Getting Started Guide

	OL-10957-02	5-7

Image 139

Cisco Systems Cisco IOS XR manual RP/0/RP1/CPU0router# show configuration commit changes ?

Contents

Americas Headquarters Cisco IOS XR Getting Started Guide Cisco IOS XR Getting Started Guide N T E N T S Restrictions Verifying the Spanning Tree Routing Policy Language Line and Policy Limits Contents CLI Tips and Shortcuts Viii Configuration Failures During a Commit Operation About This Document Changes to This DocumentRevision Date Change Summary This document contains the following chapters Intended AudienceOrganization of the Document Related Documents Convention Obtaining DocumentationConventions Cisco.com Xii Documentation FeedbackCisco Product Security Overview Product Documentation DVD Ordering Documentation Product Alerts and Field Notices Reporting Security Problems in Cisco ProductsXiii Cisco Technical Support & Documentation Website Obtaining Technical AssistanceXiv Definitions of Service Request Severity Submitting a Service RequestObtaining Additional Publications and Information Xvi Supported Standalone System Configurations Contents Cisco CRS-1 Multishelf System Overview Single-FCC Multishelf System Two-FCC Multishelf System Four-FCC Multishelf System Extensible Markup Language API Command-Line InterfaceRouter Management Interfaces Craft Works Interface Simple Network Management Protocol Selecting and Identifying the Designated Shelf Controller Selecting and Identifying the DSC on Cisco CRS-1 Routers Connecting to the Router Through the Console Port Communication Ports on the RP for a Cisco CRS-1 16-Slot LCC Card status green=OK Start the terminal emulation program Press Enter To connect to the router, perform the following procedure Log in to the router Command or Action If the router has been configured, the router displays Where to Go NextCommand or Action Purpose If the router has no configuration, the router displays Software Requirements Prerequisites Hardware Prerequisites and Documentation Bringing Up and Configuring a Standalone RouterEstablish a connection to the DSC Console port Return Examples Example Verifying the System After Initial Bring-Up Show version Command Examples of show Commands RP/0/RP0/CPU0router# show environment temperatures Show environment CommandShow environment options Show platform Command Show redundancy Command Multishelf System Hardware Requirements Restrictions Bringup Overview Information About Bringing Up a Multishelf SystemPreparing a Rack Number Plan DSC in a CRS-1/M-F1 Multishelf System Chassis Serial ID Rack Number Sample Rack Number Plan for a Two-FCC Multishelf System Location of the Serial Number on a Fabric Card Chassis Location of the Serial Number on a Line Card Chassis Configuring the External Cisco Catalyst 6509 Switches Software Requirements PrerequisitesHardware Requirements Catalyst 6500 Sup720 Compact Flash Mem 256MB RestrictionsBefore You Begin Quantity Description Part Configuring the Catalyst Switches Information About the Catalyst Switch ConfigurationRevision number Switchport access vlan Primary Catalyst switch should be configured Sets the forward-delay timer for all MST instances onSets the maximum-age timer for all MST instances on Sets the spanning tree priority for the switch Configuration mode Example Single-FCC Multishelf System ConfigurationDefault selection Exits interface configuration mode and returns to global Router# show running-config Example Four-FCC Multishelf System ConfigurationSwitches in a four-FCC multishelf system CAT6k-2config# interface gigabitethernet 0/1 Switchport Shutdown Verify the Interface Status Verifying the Catalyst SwitchCAT6k-1#show interfaces status CAT6k-1#show spanning-tree Verify that the Links are Not UnidirectionalRouter# show interface gi 6/1 inc Gig Prerequisites for an Integrated Switch System Integrated Switch System Information About the Integrated Switch Implementation Restrictions for an Integrated Switch SystemIntegrated Switch Overview Rack Type Description Integrated Switch Functions Implementing the Integrated Switch Through Rommon Implementing the Integrated Switch SystemIntegrated Switch Control Network Topology LED Definitions for the Integrated Switch System Reenabling the Ports Implementing the Integrated Switch in Cisco IOS XRBooting Up the Integrated Switch Network 6lists the Rommon switch configuration Verifying the Control Ethernet Connection Verifying the Port Statistics Verifying Spanning Tree Protocol Information Verifying Bidirectionality Admin Configure Dsc serial serial ID rack Bringing Up and Configuring Rack Want to configure as Rack Planning information including DSC placementPlaces the router in administration configuration mode LCC containing the DSC should be configured with Commits the target configuration to the router running When each subsequent LCC comes on line, the DSCEnter this command for every FCC in the multishelf When each subsequent rack comes on line, the DSC Fabric plane you are configuring. Valid slot numbers are Configures a plane to operate in an FCC slotEnter this command sequence for each of the eight fabric You want to configure Group cisco-support F0/SM0/FM Bringing Up and Verifying FCCs Apply power to all FCCs Show controllers fabric rack all detail Show controllers fabric plane all detail Show controllers fabric rack all detail Show controllers fabric connectivity all detail Bringing Up and Verifying the Non-DSC LCC Exit Verifying the Spanning Tree Expected Catalyst switch, as defined by the Catalyst Show platform command must be executedEnter this command for each RP and Scge card Switched Interface column, one GE port Verify the Spanning Tree Detail location 1/rp0/cpu0 Detail location 0/rp1/cpu0Detail location 1/rp1/cpu0 Detail location F0/SC0/cpu0 Verifying Fabric Cabling ConnectionsDetail location F0/SC1/cpu0 If the LED is off, it can mean LED State Color Meaning 10 6 11 7 OIM11 OIM0 Where to Go Next OL-10957-02 Chapter contains the following sections Secure Domain Routers 3shows the DRP Plim connections Connecting and Communicating with the Router Remote CLI, CWI XML, or Snmp Card status green=OK Communication Ports on the DRP Plim Establishing a Connection Through the Console Port Summary Steps Up for the first time, see , Bringing Up Establishing a Connection Through a Terminal ServerStandalone router is starting up for the first time, see Standalone Router. If a multishelf system is starting Press Enter Log in to the router Install and configure the terminal server Terminal server, and replace port with the terminal Replace access-server-address with the IP addressRoot-system username and password when prompted Establishes a Telnet session with the terminal server Telnet ManagementEthernetInterfaceIPaddress Logging In to a Router or an SDR Prompt Syntax Components Description CLI Prompt User Groups, Task Groups, and Task IDs User Access Privileges Personnel Command DescriptionPredefined User Groups User Group Privileges Show user all Show user tasksShow aaa usergroup group-name User group root-system Inherits from task group Root-system Aaa usergroup root-system Navigating the Cisco IOS XR Command Modes Command Mode Navigation Example, Identifying the Command Mode in the CLI Prompt Command Mode Description Summary of Common Command ModesExample Not available on most routers Password recovery, and other diagnostic tasks Entering Exec Commands from a Configuration Mode Command Mode Navigation Example 6illustrates the two-stage configuration process Managing Configuration Sessions RP/0/RP0/CPU0router# show configuration sessions Displaying the Active Configuration Sessions RP/0/RP0/CPU0routerconfig-if#ipv4 address 10.10.10.10 Starting a Configuration Session Following sections describe the following tasks Starting an Exclusive Configuration SessionDisplaying Configuration Details with show Commands Displaying the Running Configuration Ntp Displaying a Sanitized Version of the Running Configuration Telnet ipv4 server max-servers 5 username removed Displaying the Target Configuration Displaying a Combined Target and Running Configuration Configuration failed load command Displaying Configuration Error Messages and Descriptions Loading the Target Configuration from a File Saving the Target Configuration to a FileLoading an Alternative Configuration at System Startup Committing Changes to the Running Configuration Clearing All Changes to a Target Configuration Commit confirmed Show configuration commit list detail commandCommit best-effort Commit comment line RP/0/0/CPU0routerconfig# load configuration failed commit Reloading a Failed Configuration Returning Directly to Configuration Mode from a Submode Exiting a Configuration SubmodeEnding a Configuration Session Aborting a Configuration Session Configuring the SDR HostnamePreceding example sets the SDR name to Sdrsj Syntax Components Description Configuring the Management Ethernet Interface Management Interface Interface Name Example Displaying the Available Management Ethernet Interfaces Configure Interface MgmtEthrack/slot/CPU0/port Configuring the Management Ethernet InterfacePrerequisites Exits the Management Ethernet interface configuration Enters global configuration modeEnters interface configuration mode and specifies Command parameters are described in Table Show interfaces MgmtEth rack/ slot/CPU0/ port Ends the configuration session and returns to ExecDisplays the interface details to verify the settings RP/0/RP0/CPU0routerconfig-if#ipv4 address 10.1.1.1 Commit End Manually Setting the Router ClockClock update-calendar Show clock Related Topic Document Title Clock, including the configuration of a network time Clock timezone command should be enteredEnter the show clock command For detailed information about setting the system Related Documents Configuring Additional Router Features Commands Configuring Telnet, HTTP, and XML Host ServicesFollowing example, the domain name and DNS are configured Complete descriptions of the domain services Descriptions of the Telnet commands Managing Configuration History and RollbackFollowing example, the host services are enabled Installation and activation of the Manageability Displaying the CommitIDs Displaying the Configuration Changes Recorded in a CommitIDRP/0/RP1/CPU0router# show configuration commit list RP/0/RP1/CPU0routeradmin# show configuration commit list RP/0/RP1/CPU0routeradmin# show configuration commit changes Previewing Rollback Configuration ChangesRP/0/RP1/CPU0router# show configuration rollback changes to RP/0/RP1/CPU0router# rollback configuration to Rolling Back the Configuration to a Specific Rollback PointRP/0/RP0/CPU0router# rollback configuration last RP/0/RP1/CPU0router# show configuration commit changes ? Deleting CommitIDs RP/0/0/CPU0routerconfig# load rollback changes toRP/0/0/CPU0routerconfig# load rollback changes RP/0/0/CPU0router# clear configuration commit diskspace Level Description Configuring Logging and Logging CorrelationLogging Destination Command Global Configuration Mode Logging Locations and Severity Levels Commit End Show logging Alarm Logging CorrelationConfiguring Basic Message Logging Logging trap severity Logging console severity Specifies a syslog server host to use for system logging RP/0/RP0/CPU0routerconfig# loggingRP/0/RP0/CPU0routerconfig# logging trap debugging Levels When a severity level is specified, only messages at Configuration of alarm correlation and generating Following example, basic message logging is configuredConfiguration of system logging Commands used to configure logging Creating and Modifying User Accounts and User Groups Creating Users and Assigning Groups Configuring User Accounts Password for the user names specified in Step Enters username configuration submodeSpecifies a password for the user named in Step Use the secret command to create a secure login Limit Mode Configuration LimitingStatic Route Configuration Limits Default Absolute Configuration Command Maximum-redistributed-prefixes n Show isis adjacency IS-IS Configuration LimitsOSPFv2 and v3 Configuration Limits Limit Mode Exec Mode If the maximum paths Maximum paths n Show running-config router ospfMaximum interfaces n Show ospf Maximum redistributed-prefixes Show ospf Maximum Routes Redistributed into Ospf Default Absolute Maximum Configuration Command BGP Configuration LimitsFeature Limit Description Routing Policy Language Line and Policy Limits RP/0/RP1/CPU0router# show rpl maximum Limit Configuration Command Exec Mode Multicast Configuration LimitsMpls Configuration Limits Default Absolute Show Current Settings Maximum Command Other Configuration Limits CLI Tips and Shortcuts CLI Tips, Techniques, and Shortcuts Using the Question Mark ? to Display On-Screen Command Help Entering Abbreviated Commands Generally, uppercase letters represent variables arguments That apply to the keyword and brief explanations Identifying Command Syntax Errors Completing a Partial Command with the Tab Key Using the no Form of a Command Displaying System Information with show CommandsEditing Command Lines that Wrap Command Description Command Mode Common show Commands Halting the Display of Screen Output Browsing Display Output when the --More-- Prompt Appears RP/0/RP1/CPU0router# show running-config router static Narrowing Output from Large ConfigurationsRedirecting Output to a File Using Wildcards to Display All Instances of an Interface Filtering show Command OutputRP/0/RP1/CPU0router# show running-config interface pos File on the specified device Adding a Filter at the --More-- PromptContains the regular expression Displays output lines that contain the regular expression Wildcard Syntax Description Using Wildcards to Identify Interfaces in show CommandsWildcards, Templates, and Aliases Example RP/0/RP1/CPU0router# show interfaces pos* brief Creating Configuration Templates End-template Show running-config template template-name Show running-config template template-name Applying Configuration TemplatesApplies the target configuration commands to the running RP/0/RP0/CPU0router# show running-config Template tmplt1 Aliases 5defines the alias command syntax RP/0/0/CPU0routerconfig# alias my-cookie mgmtEth 0/0/CPU0/0 Command HistoryKeystrokes Used as Command Aliases Displaying Previously Entered Commands Command or Key Combination Recalls Recalling Previously Entered CommandsRedisplaying the Command Line Command or Key Combination Purpose Keystrokes Function Moves the Cursor Key CombinationsKey Combinations to Move the Cursor Keystrokes to Control Capitalization Keystrokes Deletes Keystrokes to Delete CLI EntriesTransposing Mistyped Characters Esc, L Esc, U OL-10957-02 Additional Sources for Information Basic Troubleshooting Commands Show controller Show variables bootShow install Show context and show exception Using the ping Command Following example, a successful ping attempt is shown Using the traceroute CommandNext example, an unsuccessful ping attempt is shown RP/0/RP0/CPU0router# traceroute Using debug CommandsDisplaying a List of Debug Features Following example, the route for an IP address is displayed Displaying Debugging Status Enabling Debugging for a Feature Disabling Debugging for a Service Configuration Error Messages Show configuration failed noerror command Configuration Failures During a Commit OperationConfiguration Errors at Startup Show configuration failed command Understanding Low-Memory Warnings in Configuration Sessions Memory Warnings in Configuration Sessions Displaying System Memory Information ERROR! Memory is in Severe or Critical State Heading Description Removing Configurations to Resolve Low-Memory WarningsClearing a Target Configuration Removing Committed Configurations to Free System Memory Clearing Configuration Sessions Rolling Back to a Previously Committed Configuration Contacting TAC for Additional Assistance Interfaces Not Coming UpVerifying the System Interfaces RP/0/RP0/CPU0router# show ipv4 interface brief Configure the interfaces, as shown in the following examples Connection Bring the interface up with the following commands OL-10957-02 Regular Expressions Character Pattern Ranges Special CharactersCharacter Special Meaning Ba?b Complex Regular Expressions Using MultipliersMultiple-Character Patterns Character Description Parentheses Used for Pattern Recall Pattern AlternationAnchor Characters Underscore Wildcard Bc.\1\2 OL-10957-02 GL-1 Denoted as primary Client runs in a web browser Into memory at startupIs from 0x0 to 0xFFFF 0 to 65535 in decimal Processes Received Installation or upgradeHave a registered name in the same style Outgoing channel Need to provide continuous service Examples of platforms using a GUI. See also CLIGL-4 RIP Provides other information relevant to IP packet processingGL-5 IP routing information To boot a node048,576 bits Standard and private proprietary branches Sent to it by a peer Card installed and running on the routerBattery permanently connected Loading software images from a network server, such as Tftp GL-8 Group of software components installed on the routerInterfaces connecting to a Cisco CRS-1 router SDH frames Data Delay, and delivery guaranteeGL-9 GL-10 GL-11 Cisco Technical Assistance Center GL-12 GL-13 GL-14 IN-1 IN-2 IS-ISMulticast Static routes RP for 4-slot and 8-slot LCCs, illustration 1-11,4-4 DRP Plim illustration PRP-2 illustrationIN-3 IN-4 Low memory warning, removing configurations Module Number displayed in prompt More prompt Maximum-paths commandIN-5 IN-6 FCC IN-7 IN-8 Show task supported commandShow tech-support command 6-6,7-3 Show user command Status LEDs Wildcards Username commandIN-9 IN-10