IS-IS Configuration Limits | Cisco Systems Cisco IOS XR guide

Chapter 5 Configuring Additional Router Features

Configuration Limiting

RP/0/RP1/CPU0:router(config-static)# show running-config router static

router static

maximum path ipv4 5000 address-family ipv4 unicast

0.0.0.0/0 172.29.52.1

!

!

IS-IS Configuration Limits

Table 5-5summarizes the maximum limits for IS-IS, including the commands used to display and change the limits.

Table 5-5	IS-IS Configuration Limits and Commands

		Default	Absolute	Configuration Command	Show Current Settings
		Maximum	Maximum	(Address Family Configuration	Command
Feature Limit Description		Limit	Limit	Mode)	(EXEC Mode)

Maximum number of		10,000	28,000	maximum-redistributed-prefixes n	show isis adjacency
prefixes redistributed
into IS-IS

Number of active parallel		8	32	maximum-paths n	show isis route
paths for each route on a
Cisco CRS-1 router

Number of active parallel		8	16	maximum-paths n	show isis route
paths for each route on a
Cisco XR 12000 Series
Router

Examples

In the following example, the maximum number of active parallel paths for each route is increased to 10, and the maximum number of prefixes redistributed into IS-IS is increased to 12,000:

RP/0/RP1/CPU0:router# configure

RP/0/RP1/CPU0:router(config)# router isis 100 address-family ipv4

RP/0/RP1/CPU0:router(config-isis-af)# maximum-paths 10

RP/0/RP1/CPU0:router(config-isis-af)# maximum-redistributed-prefixes 12000

RP/0/RP1/CPU0:router(config-isis-af)# commit

RP/0/RP1/CPU0:Mar 30 14:11:07 : config[65739]: %LIBTARCFG-6-COMMIT : Configurati

on committed by user 'cisco'. Use 'show configuration commit changes 1000000535' to view the changes.

RP/0/RP1/CPU0:router(config-isis-af)#

OSPFv2 and v3 Configuration Limits

Table 5-6summarizes the maximum limits for OSPF, including the commands used to display and change the limits.

		Cisco IOS XR Getting Started Guide
		Cisco IOS XR Getting Started Guide
	OL-10957-02			5-17
	OL-10957-02			5-17

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Cisco Systems Cisco IOS XR manual IS-IS Configuration Limits, OSPFv2 and v3 Configuration Limits, Limit Mode Exec Mode

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 Revision Date Change Summary Changes to This DocumentAbout This Document Organization of the Document Intended AudienceRelated Documents This document contains the following chapters Conventions Obtaining DocumentationCisco.com Convention Cisco Product Security Overview Documentation FeedbackProduct Documentation DVD Ordering Documentation Xii Xiii Reporting Security Problems in Cisco ProductsProduct Alerts and Field Notices Xiv Obtaining Technical AssistanceCisco Technical Support & Documentation Website Obtaining Additional Publications and Information Submitting a Service RequestDefinitions of Service Request Severity Xvi Supported Standalone System Configurations Contents Cisco CRS-1 Multishelf System Overview Single-FCC Multishelf System Two-FCC Multishelf System Four-FCC Multishelf System Router Management Interfaces Command-Line InterfaceCraft Works Interface Extensible Markup Language API 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 Command or Action Purpose Where to Go NextIf the router has no configuration, the router displays If the router has been configured, the router displays Software Requirements Prerequisites Establish a connection to the DSC Console port Bringing Up and Configuring a Standalone RouterHardware Prerequisites and Documentation Return Examples Example Verifying the System After Initial Bring-Up Show version Command Examples of show Commands Show environment options Show environment CommandRP/0/RP0/CPU0router# show environment temperatures Show platform Command Show redundancy Command Multishelf System Hardware Requirements Restrictions Preparing a Rack Number Plan Information About Bringing Up a Multishelf SystemBringup Overview 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 Hardware Requirements PrerequisitesSoftware Requirements Before You Begin RestrictionsQuantity Description Part Catalyst 6500 Sup720 Compact Flash Mem 256MB Revision number Information About the Catalyst Switch ConfigurationConfiguring the Catalyst Switches Switchport access vlan Sets the maximum-age timer for all MST instances on Sets the forward-delay timer for all MST instances onSets the spanning tree priority for the switch Primary Catalyst switch should be configured Default selection Example Single-FCC Multishelf System ConfigurationExits interface configuration mode and returns to global Configuration mode Switches in a four-FCC multishelf system Example Four-FCC Multishelf System ConfigurationCAT6k-2config# interface gigabitethernet 0/1 Router# show running-config Switchport Shutdown CAT6k-1#show interfaces status Verifying the Catalyst SwitchVerify the Interface Status Router# show interface gi 6/1 inc Gig Verify that the Links are Not UnidirectionalCAT6k-1#show spanning-tree Prerequisites for an Integrated Switch System Integrated Switch System Integrated Switch Overview Restrictions for an Integrated Switch SystemInformation About the Integrated Switch Implementation Rack Type Description Integrated Switch Functions Integrated Switch Control Network Topology Implementing the Integrated Switch SystemLED Definitions for the Integrated Switch System Implementing the Integrated Switch Through Rommon Booting Up the Integrated Switch Network Implementing the Integrated Switch in Cisco IOS XR6lists the Rommon switch configuration Reenabling the Ports 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 Places the router in administration configuration mode Planning information including DSC placementLCC containing the DSC should be configured with Want to configure as Rack Enter this command for every FCC in the multishelf When each subsequent LCC comes on line, the DSCWhen each subsequent rack comes on line, the DSC Commits the target configuration to the router running Enter this command sequence for each of the eight fabric Configures a plane to operate in an FCC slotYou want to configure Fabric plane you are configuring. Valid slot numbers are 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 Enter this command for each RP and Scge card Show platform command must be executedSwitched Interface column, one GE port Expected Catalyst switch, as defined by the Catalyst Verify the Spanning Tree Detail location 1/rp1/cpu0 Detail location 0/rp1/cpu0Detail location 1/rp0/cpu0 Detail location F0/SC1/cpu0 Verifying Fabric Cabling ConnectionsDetail location F0/SC0/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 Standalone router is starting up for the first time, see Establishing a Connection Through a Terminal ServerStandalone Router. If a multishelf system is starting Up for the first time, see , Bringing Up Press Enter Log in to the router Install and configure the terminal server Root-system username and password when prompted Replace access-server-address with the IP addressEstablishes a Telnet session with the terminal server Terminal server, and replace port with the terminal 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 Predefined User Groups Command DescriptionUser Group Privileges Personnel Show aaa usergroup group-name Show user tasksShow user all 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 Example Summary of Common Command ModesCommand Mode Description 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 Displaying Configuration Details with show Commands Starting an Exclusive Configuration SessionDisplaying the Running Configuration Following sections describe the following tasks 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 an Alternative Configuration at System Startup Saving the Target Configuration to a FileLoading the Target Configuration from a File Committing Changes to the Running Configuration Clearing All Changes to a Target Configuration Commit best-effort Show configuration commit list detail commandCommit comment line Commit confirmed RP/0/0/CPU0routerconfig# load configuration failed commit Reloading a Failed Configuration Ending a Configuration Session Exiting a Configuration SubmodeReturning Directly to Configuration Mode from a Submode Preceding example sets the SDR name to Sdrsj Configuring the SDR HostnameAborting a Configuration Session Syntax Components Description Configuring the Management Ethernet Interface Management Interface Interface Name Example Displaying the Available Management Ethernet Interfaces Prerequisites Configuring the Management Ethernet InterfaceConfigure Interface MgmtEthrack/slot/CPU0/port Enters interface configuration mode and specifies Enters global configuration modeCommand parameters are described in Table Exits the Management Ethernet interface configuration Displays the interface details to verify the settings Ends the configuration session and returns to ExecRP/0/RP0/CPU0routerconfig-if#ipv4 address 10.1.1.1 Show interfaces MgmtEth rack/ slot/CPU0/ port Clock update-calendar Show clock Manually Setting the Router ClockRelated Topic Document Title Commit End Enter the show clock command Clock timezone command should be enteredFor detailed information about setting the system Clock, including the configuration of a network time Related Documents Configuring Additional Router Features Following example, the domain name and DNS are configured Configuring Telnet, HTTP, and XML Host ServicesComplete descriptions of the domain services Commands Following example, the host services are enabled Managing Configuration History and RollbackInstallation and activation of the Manageability Descriptions of the Telnet commands RP/0/RP1/CPU0router# show configuration commit list Displaying the Configuration Changes Recorded in a CommitIDRP/0/RP1/CPU0routeradmin# show configuration commit list Displaying the CommitIDs RP/0/RP1/CPU0router# show configuration rollback changes to Previewing Rollback Configuration ChangesRP/0/RP1/CPU0routeradmin# show configuration commit changes RP/0/RP0/CPU0router# rollback configuration last Rolling Back the Configuration to a Specific Rollback PointRP/0/RP1/CPU0router# rollback configuration to RP/0/RP1/CPU0router# show configuration commit changes ? RP/0/0/CPU0routerconfig# load rollback changes RP/0/0/CPU0routerconfig# load rollback changes toRP/0/0/CPU0router# clear configuration commit diskspace Deleting CommitIDs Logging Destination Command Global Configuration Mode Configuring Logging and Logging CorrelationLogging Locations and Severity Levels Level Description Configuring Basic Message Logging Alarm Logging CorrelationLogging trap severity Logging console severity Commit End Show logging RP/0/RP0/CPU0routerconfig# logging trap debugging Levels RP/0/RP0/CPU0routerconfig# loggingWhen a severity level is specified, only messages at Specifies a syslog server host to use for system logging Configuration of system logging Following example, basic message logging is configuredCommands used to configure logging Configuration of alarm correlation and generating Creating and Modifying User Accounts and User Groups Creating Users and Assigning Groups Configuring User Accounts Specifies a password for the user named in Step Enters username configuration submodeUse the secret command to create a secure login Password for the user names specified in Step Static Route Configuration Limits Configuration LimitingDefault Absolute Configuration Command Limit Mode OSPFv2 and v3 Configuration Limits IS-IS Configuration LimitsLimit Mode Exec Mode Maximum-redistributed-prefixes n Show isis adjacency Maximum interfaces n Show ospf Maximum paths n Show running-config router ospfMaximum redistributed-prefixes Show ospf If the maximum paths Maximum Routes Redistributed into Ospf Feature Limit Description BGP Configuration LimitsDefault Absolute Maximum Configuration Command Routing Policy Language Line and Policy Limits RP/0/RP1/CPU0router# show rpl maximum Mpls Configuration Limits Multicast Configuration LimitsDefault Absolute Show Current Settings Maximum Command Limit Configuration Command Exec Mode 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 Editing Command Lines that Wrap Displaying System Information with show CommandsUsing the no Form of a Command Command Description Command Mode Common show Commands Halting the Display of Screen Output Browsing Display Output when the --More-- Prompt Appears Redirecting Output to a File Narrowing Output from Large ConfigurationsRP/0/RP1/CPU0router# show running-config router static RP/0/RP1/CPU0router# show running-config interface pos Filtering show Command OutputUsing Wildcards to Display All Instances of an Interface Contains the regular expression Adding a Filter at the --More-- PromptDisplays output lines that contain the regular expression File on the specified device Wildcards, Templates, and Aliases Using Wildcards to Identify Interfaces in show CommandsExample Wildcard Syntax Description RP/0/RP1/CPU0router# show interfaces pos* brief Creating Configuration Templates End-template Show running-config template template-name Applies the target configuration commands to the running Applying Configuration TemplatesRP/0/RP0/CPU0router# show running-config Template tmplt1 Show running-config template template-name Aliases 5defines the alias command syntax Keystrokes Used as Command Aliases Command HistoryDisplaying Previously Entered Commands RP/0/0/CPU0routerconfig# alias my-cookie mgmtEth 0/0/CPU0/0 Redisplaying the Command Line Recalling Previously Entered CommandsCommand or Key Combination Purpose Command or Key Combination Recalls Key Combinations to Move the Cursor Key CombinationsKeystrokes to Control Capitalization Keystrokes Function Moves the Cursor Transposing Mistyped Characters Keystrokes to Delete CLI EntriesEsc, L Esc, U Keystrokes Deletes OL-10957-02 Additional Sources for Information Basic Troubleshooting Commands Show install Show variables bootShow context and show exception Show controller Using the ping Command Next example, an unsuccessful ping attempt is shown Using the traceroute CommandFollowing example, a successful ping attempt is shown Displaying a List of Debug Features Using debug CommandsFollowing example, the route for an IP address is displayed RP/0/RP0/CPU0router# traceroute Displaying Debugging Status Enabling Debugging for a Feature Disabling Debugging for a Service Configuration Error Messages Configuration Errors at Startup Configuration Failures During a Commit OperationShow configuration failed command Show configuration failed noerror 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 Clearing a Target Configuration Removing Configurations to Resolve Low-Memory WarningsRemoving Committed Configurations to Free System Memory Heading Description Clearing Configuration Sessions Rolling Back to a Previously Committed Configuration Verifying the System Interfaces Interfaces Not Coming UpContacting TAC for Additional Assistance 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 Special Meaning Special CharactersCharacter Pattern Ranges Multiple-Character Patterns Complex Regular Expressions Using MultipliersCharacter Description Ba?b Anchor Characters Pattern AlternationUnderscore Wildcard Parentheses Used for Pattern Recall Bc.\1\2 OL-10957-02 GL-1 Denoted as primary Is from 0x0 to 0xFFFF 0 to 65535 in decimal Into memory at startupProcesses Client runs in a web browser Have a registered name in the same style Installation or upgradeOutgoing channel Received GL-4 Examples of platforms using a GUI. See also CLINeed to provide continuous service GL-5 Provides other information relevant to IP packet processingRIP 048,576 bits To boot a nodeStandard and private proprietary branches IP routing information Battery permanently connected Card installed and running on the routerLoading software images from a network server, such as Tftp Sent to it by a peer Interfaces connecting to a Cisco CRS-1 router Group of software components installed on the routerSDH frames GL-8 GL-9 Delay, and delivery guaranteeData GL-10 GL-11 Cisco Technical Assistance Center GL-12 GL-13 GL-14 IN-1 Multicast IS-ISStatic routes IN-2 IN-3 DRP Plim illustration PRP-2 illustrationRP for 4-slot and 8-slot LCCs, illustration 1-11,4-4 IN-4 Low memory warning, removing configurations IN-5 Maximum-paths commandModule Number displayed in prompt More prompt IN-6 FCC IN-7 Show tech-support command 6-6,7-3 Show user command Show task supported commandStatus LEDs IN-8 IN-9 Username commandWildcards IN-10