Cisco Systems OL-14361-01 User's Manual
Contents
1. or RP 0 RPO CPU0 router config commit Saves configuration changes e When you issue the end command the system prompts you to commit changes Uncommitted changes found commit them before exiting yes no cancel cancel Entering yes saves configuration changes to the running configuration file exits the configuration session and returns the router to EXEC mode Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes e Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session Step5 show hosts Example RP 0 RPO CPU0 router config show hosts Displays all configured name servers Examples In the following example the domain name and DNS are configured RP O0 R RP O0 R RP O0 R RP O0 R RP O R RP 0 R Defaul PO CPUO PO CPUO PO CPUO PO CPUO PO CPUO PO CPUO router configure router config domain name cisco com router config domain name server 10 1 1 1 router config commit router config end router show hosts t domain is cisco com Name address lookup uses domain service Name servers Related Documents 10 1 1 1 Related Topic Document Title Comp2. page 5 125 e Routing Policy Language Line and Policy Limits page 5 127 e Multicast Configuration Limits page 5 129 e MPLS Configuration Limits page 5 130 OL 14361 01 Cisco IOS XR Getting Started Guide Chapter 5 Configuring Additional Router Features W Configuration Limiting Static Route Configuration Limits Table 5 4 summarizes the maximum limits for static routes including the commands used to display and change the limits Table 5 4 Static Route Configuration Limits and Commands Default Absolute Configuration Command Maximum Maximum Static Router Configuration Show Current Settings Command Feature Limit Description Limit Limit Mode EXEC or Global Configuration Mode Maximum static IPv4 routes 4000 40 000 maximum path ipv4 n show running config router static Maximum static IPv6 routes 4000 40 000 maximum path ipv6 n show running config router static Examples In the following example the maximum number of static IPv4 routes is changed to 5000 and the new configuration is displayed RP 0 RP1 CPU0 router configure RP 0 RP1 CPU0 router config router RP 0 RP1 CPU0 router config static RP 0 RP1 CPU0 router config static RP 0 RP1 CPU0 router config static static maximum path ipv4 5000 commit show running config router static router static maximum path ipv4 5000 address family ipv4 unicast 0 0 0 0 0 172 29 52 1 l IS IS Configuration Limits Tab
3. 19 18 58 679 8 19 19 01 287 8 19 22 15 658 19 22 30 122 19 22 30 160 8 19 22 30 745 8 19 22 32 596 19 22 35 F81 19 22 35 223 122 1 22 122 z221 1223 8 19 19 19 19 8 8 8 8 19 Creating and Modifying User Accounts and User Groups W instdir 203 tINSTALL INSTMGR 6 INSTALL_OP instdir 203 INSTALL INSTMGR 6 INSTALL_OP instdir 203 INSTALL INSTMGR 6 INSTALL_OP sysmgr 74 O0S SYSMGR 7 INSTALL_NOTIFICATION sysmgr 74 O0S SYSMGR 7 INSTALL_NOTIFICATION sysmgr 79 OS SYSMGR 7 INSTALL_NOTIFICATI sysmgr 79 OS SYSMGR 7 INSTALL_NOTIFICATI sysmgr 74 OS SYSMGR 7 INSTALL_FINISHED s sysmgr 74 O0S SYSMGR 7 INSTALL_FINISHED s 736 122 sysmgr 79 OS SYSMGR 7 INSTALL_FINISHED 37 790 sysmgr 79 OS SYSMGR 7 INSTALL_FINISHED 41 015 schema_server 332 MGBL SCHEMA 6 VERSIONC 59 844 instdir 203 INSTALL INSTMGR 4 ACTIVE_SOF 59 851 instdir 203 INSTALL INSTMGR 6 INSTALL_OP Document Title Configuration of system logging Implementing Logging Services on Cisco IOS XR Software module of Cisco IOS XR System Monitoring Configuration Guide Commands used to configure logging Logging Services Commands on Cisco IOS XR Software module of Cisco IOS XR System Monitoring Command Reference Configuration of alarm correlation and generating complex queries Implementing and Monitoring Alarms and Alarm Log Correlation on Cisco IOS XR Software module of Cisco IOS XR Syst
4. 40 000 maximum groups per interface n show igmp summary groups for each interface router IGMP interface configuration accepted by a router mode Multicast Source Discovery Protocol MSDP Limits Maximum MSDP Source 20 000 75 000 maximum external sa n show msdp summary Active SA entries router MSDP configuration mode Maximum MSDP SA 20 000 75 000 maximum peer external sa n show msdp summary n router MSDP configuration mode peers Protocol Independent Multicast PIM Limits Maximum PIM routes 100 000 200 000 maximum routes n show pim summary supported router PIM configuration mode Maximum PIM egress 300 000 600 000 maximum route interfaces n show pim summary states router PIM configuration mode Maximum PIM registers 20 000 75 000 maximum register states n show pim summary router PIM configuration mode Maximum number of 500 5000 maximum group mappings autorp n show pim summary PIM group map ranges learned from Auto RP router PIM configuration mode I OL 14361 01 Cisco IOS XR Getting Started Guide Chapter 5 Configuring Additional Router Features W Configuration Limiting MPLS Configuration Limits Table 5 10 summarizes the maximum limits for MPLS configuration including the commands used to display and change the limits Table 5 10 Limit Description Default Absolute Maximum Limit MPLS Configuration Limits and Commands Global Configuration Mode Configuratio
5. Guide Chapter5 Configuring Additional Router Features WE Configuration Limiting Examples The following examples illustrate OSPF configuration limits e Maximum Interfaces for Each OSPF Instance Example page 5 124 e Maximum Routes Redistributed into OSPF Example page 5 125 e Number of Parallel Links max paths Example page 5 125 Maximum Interfaces for Each OSPF Instance Example In the following example the show ospf command is used to display the maximum number of OSPF interfaces RP O RP1 CPU0 router show ospf Routing Process ospf 100 with ID 0 0 0 0 Supports only single TOS TOSO routes Supports opaque LSA It is an area border router Initial SPF schedule delay 5000 msecs Minimum hold time between two consecutive SPFs 10000 msecs Maximum wait time between two consecutive SPFs 10000 msecs Initial LSA throttle delay 500 msecs Minimum hold time for LSA throttle 5000 msecs Maximum wait time for LSA throttle 5000 msecs Minimum LSA interval 5 secs Minimum LSA arrival 1 secs Maximum number of configured interfaces 255 More The following example configures the maximum interface limit on a router RP 0 RP1 CPU0 router configure RP 0 RP1 CPU0 router config router ospf 100 RP 0 RP1 CPU0 router config router maximum interfaces 600 RP 0 RP1 CPU0 router config router end Uncommitted changes found commit them yes y P O0 RP1 CPU0 Mar 30 16 12 39 config 65740 LIBTARCFG 6 COMMIT Co
6. ommitted by user cisco Use show configuration commit changes 1000000541 to view he changes P O RP1 CPU0 Mar 30 16 26 52 y cisco P 0 RP1 CPU0 router ta Ww vs config 65740 SYS 5 CONFIG_I Configured from console oy vs Number of Parallel Links max paths Example In the following example the maximum paths command is used to set the maximum number of parallel routes RP 0 RP1 CPU0 router configure RP 0 RP1 CPU0 router config router ospf 100 RP 0 RP1 CPU0 router config router maximum paths 10 RP 0 RP1 CPU0 router config router end Uncommitted changes found commit them yes y P O RP1 CPU0 Mar 30 18 05 13 config 65740 LIBTARCFG 6 COMMIT Configuration ommitted by user cisco Use show configuration commit changes 1000000542 to view he changes P O RP1 CPU0 Mar 30 18 05 13 y cisco P 0 RP1 CPU0 router ta Ww vs config 65740 SYS 5 CONFIG_I Configured from console y s BGP Configuration Limits The maximum number of BGP neighbors peers that can be configured is 1024 This number cannot be changed through configuration Any attempt to configure additional neighbors beyond the limit fails To prevent neighbors peers from flooding BGP with advertisements a limit is placed on the number of prefixes that can be accepted from a peer for each supported address family You can override the default limits for an address family with the maximum p
7. 39 Use PUO router config isis af OSPFv2 and v3 Configuration Limits SLIBTARCFG 6 COMMIT show configuration commit changes 1000000535 Configuration to view Table 5 6 summarizes the maximum limits for OSPF including the commands used to display and change the limits Table 5 6 OSPFv2 and OSPFv3 Configuration Limits and Commands Default Absolute Feature Limit Maximum Maximum Configuration Command Show Current Settings Command Description Limit Limit Router Configuration Mode EXEC Mode Maximum number of 255 1024 maximum interfaces n show ospf interfaces that can be configured for an OSPF instance Maximum routes 10 000 4294967295 maximum redistributed prefixes show ospf ee me 4 Note The maximum number of redistributed prefixes is displayed only if redistribution is configured Maximum number of 32 32 maximum paths n show running config router ospf parallel l OSPFv2 Note This command shows only eae i aths on 16 changes to the default isco CRS 1 routers OSPFv3 value If the maximum paths command does not appear the router is set to the default value Maximum number of 16 16 maximum paths n show running config router ospf parallel ok Note This command shows only aaa s ona changes to the default Cisco R 000 value If the maximum Series Router paths command does not appear the router is set to the default value I OL 14361 01 Cisco IOS XR Getting Started
8. Contents F CHAPTER Configuring Additional Router Features This chapter contains instructions and information for entering basic configurations using the command line interface CLI Configuring the Domain Name and Domain Name Server page 5 103 Configuring Telnet HTTP and XML Host Services page 5 106 Managing Configuration History and Rollback page 5 108 Configuring Logging and Logging Correlation page 5 114 Creating and Modifying User Accounts and User Groups page 5 117 Configuring Software Entitlement page 5 121 Configuration Limiting page 5 121 Configuring the Domain Name and Domain Name Server Configure a domain name and domain name server DNS for your router to make contacting other devices on your network more efficient Use the following guidelines To define a default domain name that the Cisco IOS XR software uses to complete unqualified hostnames names without a dotted decimal domain name use the domain name command in global configuration mode To specify the address of one or more name servers to use for name and address resolution use the domain name server command in global configuration mode If no name server address is specified the default name server is 255 255 255 255 so the DNS lookup can be broadcast to the local network segment If a DNS server is in the local network it replies If not there might be a server that knows how to forward the DNS request to the correct DNS server Use the sh
9. SMgUH xzUEW6jL yAYLKJE 3p440 group root system I end Cisco IOS XR Getting Started Guide OL 14361 01 nE Chapter5 Configuring Additional Router Features W Managing Configuration History and Rollback Previewing Rollback Configuration Changes The show configuration rollback changes command allows you to preview the configuration changes that take place if you roll back the configuration to a specific commitID For example if you want to roll back the configuration to a specific point all configuration changes made after that point must be undone This rollback process is often accomplished by executing the no version of commands that must be undone To display the prospective rollback configuration changes from the current configuration to a specific commitID go to EXEC or administration EXEC mode and enter the show configuration rollback changes to commitId command In the following example the command help displays the available commitIDs and then the rollback changes are displayed RP O RP1 CPU0 router show configuration rollback changes to 1000000217 Commit ID 1000000218 Commit ID 1000000219 Commit ID RP O0 RP1 CPU0 router show configuration rollback changes to 1000000218 Building configuration no interface Loopback100 interface POS0 1 0 0 no ipv6 nd dad attempts no route policy xx end To display the prospective rollback configuration changes from the current configuration to
10. U0 router config rpl maximum policies 4000 RP 0 RP1 CPU0 router config rpl maximum lines 80000 RP 0 RP1 CPU0 router config commit RP O RP1 CPU0 Apr 1 00 23 44 062 config 65709 SLIBTARCFG 6 COMMIT Configuration committed by user UNKNOWN Use show configuration commit changes 1000000010 to view the changes RP 0 RP1 CPU0 router config exit vs P O RP1 CPU0 Apr 1 00 23 47 781 config 65709 SYS 5 CONFIG_I Configured from console by console RP 0 RP1 CPU0 router show rpl maximum Current Current Max Total Limit Limit Lines of configuration 0 80000 131072 Policies 0 4000 5000 Compiled policies size kB 0 RP 0 RP1 CPU0 router Cisco IOS XR Getting Started Guide ca OL 14361 01 Chapter 5 Configuring Additional Router Features Multicast Configuration Limits Configuration Limiting W Table 5 9 summarizes the maximum limits for multicast configuration including the commands used to display and change the limits Table 5 9 Feature Limit Description Default Maximum Limit Absolute Maximum Limit Multicast Configuration Limits and Commands Configuration Command Show Current Settings Command EXEC Mode Internet Group Management Protocol IGMP Limits Maximum number of 50 000 75 000 maximum groups n show igmp summary groups used by IGMP router IGMP configuration mode and accepted by a router Maximum number of 25 000
11. a specified number of previous sessions go to EXEC or administration EXEC mode and enter the show configuration rollback changes last commit range command RP 0 RPO CPU0 router show configuration rollback changes last 2 Building configuration interface Loopback3 no description no ipv4 address 10 0 1 1 255 0 0 0 exit interface Loopback4 no description no ipv4 address 10 0 0 1 255 0 0 0 end In the preceding example the command display shows the proposed rollback configuration changes for the last two commit IDs Rolling Back the Configuration to a Specific Rollback Point When you roll back the configuration to a specific rollback point you undo all configuration changes made during the session identified by the commit ID for that rollback point and you undo all configuration changes made after that point The rollback process rolls back the configuration and commits the rolled back configuration The rollback process also creates a new rollback point so that you can roll back the configuration to the previous configuration Cisco IOS XR Getting Started Guide cau OL 14361 01 Chapter 5 Configuring Additional Router Features P Managing Configuration History and Rollback W Tip To preview the commands that undo the configuration during a rollback use the show configuration rollback changes command To roll back the router configuration to a previously committed configuration go to EXEC or adminis
12. changes found commit them before exiting yes no cancel RP 0 RP0 CPU0 router config end cancer or RP 0 RPO CPU0 router config commit J neer 19 J Entering yes saves configuration changes to the running configuration file exits the configuration session and returns the router to EXEC mode Entering no exits the configuration session and returns the router to EXEC mode without committing the configuration changes Entering cancel leaves the router in the current configuration session without exiting or committing the configuration changes e Use the commit command to save the configuration changes to the running configuration file and remain within the configuration session Cisco IOS XR Getting Started Guide oL 14361 01 nE Chapter5 Configuring Additional Router Features W Managing Configuration History and Rollback Examples In the following example the host services are enabled RP 0 RPO CPUO RP 0 RPO CPUO RP 0 RPO CPUO RP 0 RPO CPUO RP 0 RPO CPUO router config router config Related Documents Related Topic router config router configure gt router config telnet ipv6 server max servers 5 http server xml agent corba commit Document Title Installation and activation of the Manageability and Security Packages Upgrading and Managing Cisco IOS XR Software module of Cisco IOS XR System Management Configuration Guide Description
13. e Configuring Basic Message Logging page 5 115 Logging Locations and Severity Levels Error messages can be logged to a variety of locations as shown in Table 5 1 Table 5 1 Logging Locations for System Error Messages Logging Destination Command Global Configuration Mode console logging console vty terminal logging monitor external syslog server logging trap internal buffer logging buffered You can log messages based on the severity level of the messages as shown in Table 5 2 Table 5 2 Logging Severity Levels for System Error Messages Level Description Level 0O Emergencies System has become unusable Level 1 Alerts Immediate action needed to restore system stability Level 2 Critical Critical conditions that may require attention Level 3 Errors Error conditions that may help track problems Level 4 Warnings Warning conditions that are not severe Level 5 Notifications Normal but significant conditions that bear notification Level 6 Informational Informational messages that do not require action Level 7 Debugging Debugging messages are for system troubleshooting only Cisco IOS XR Getting Started Guide ca OL 14361 01 Chapter5 Configuring Additional Router Features Configuring Logging and Logging Correlation W Alarm Logging Correlation Alarm logging correlation is used to group and filter similar messages to reduce the amount of redundant l
14. ed froma 295 neighbor VPNV4 unicast maximum prefixes 524 288 4 294 967 maximum prefix n show bgp neighbor P_address that can be received from a 295 neighbor VPNv6 unicast maximum prefixes 524 288 4 294 967 maximum prefix n show bgp neighbor P_address that can be received from a 295 neighbor Maximum equal cost parallel 1 8 maximum paths n show running config routes to external peers This command shows only changes to the default value If the maximum paths command does not appear the router is set to the default value Note Cisco IOS XR Getting Started Guide OL 14361 01 Chapter5 Configuring Additional Router Features Examples Configuration Limiting W A cease notification message is sent to the neighbor and the peering with the neighbor is terminated when the number of prefixes received from the peer for a given address family exceeds the maximum limit either set by default or configured by the user for that address family However if the warning only keyword for the maximum prefix command is configured the Cisco IOS XR software sends only a log message but continues peering with the sender If the peer is terminated the peer stays down until the clear bgp command is issued The same set of actions sending cease notification followed by the termination of the peering is taken for a neighbor with which peering has already been established if you decide to configure a maximum that i
15. ee Table 5 2 for a summary of the logging severity RP 0 RPO CPU0 router config logging trap levels debugging Cisco IOS XR Getting Started Guide OL 14361 01 5 115 Chapter5 Configuring Additional Router Features WE Configuring Logging and Logging Correlation Command or Action Purpose Step 4 logging console severity Example RP 0 RPO CPU0 router config logging console emergencies Logs messages on the console e When a severity level is specified only messages at that severity level are logged on the console e See Table 5 2 for a summary of the logging severity levels Step 5 logging buffered severity buffer size Example RP 0 RPO CPU0 router config logging buffered 1000000 Copies logging messages to an internal buffer e Newer messages overwrite older messages after the buffer is filled e Specifying a severity level causes messages at that level and numerically lower levels to be logged in an internal buffer See Table 5 2 for a summary of the logging severity levels e The buffer size is from 4096 to 4 294 967 295 bytes Messages above the set limit are logged to the console Step6 commit Example RP 0 RPO CPU0 router config commit Commits the target configuration to the router running configuration Step7 end Example RP 0 RPO CPU0 router config end Ends the configuration session and returns to EXEC mode Step 8 show logging E
16. em Management Configuration Guide Commands used to configure alarm correlation Alarm Management and Logging Correlation Commands on Cisco IOS XR Software module of Cisco IOS XR System Management Command Reference Retrieve logging events through an XML interface Cisco IOS XR XML API Guide Disabling Console Logging To disable console logging enter the logging console disable command in global configuration mode Creating and Modifying User Accounts and User Groups In the Cisco IOS XR software users are assigned individual usernames and passwords Each username is assigned to one or more user groups each of which defines display and configuration commands the user is authorized to execute This authorization is enabled by default in the Cisco IOS XR software and each user must log in to the system using a unique username and password The following sections describe the basic commands used to configure users and user groups For a summary of user accounts user groups and task IDs see the User Groups Task Groups and Task IDs section on page 4 69 e Displaying Details About User Accounts User Groups and Task IDs page 5 118 e Configuring User Accounts page 5 119 I OL 14361 01 Cisco IOS XR Getting Started Guide Chapter5 Configuring Additional Router Features WE Creating and Modifying User Accounts and User Groups amp Note The management of user accounts user groups and task IDs
17. g and activating packages amp Note This process enables the Telnet HTTP and XML host services on the Management Ethernet interfaces For more information on how to enable these services on other inband interfaces refer to the Implementing Management Plane Protection on Cisco IOS XR Software module in Cisco IOS XR System Security Configuration Guide SUMMARY STEPS 1 configure telnet ipv4 ipv6 server max servers limit http server xml agent corba oo ee ON commit Cisco IOS XR Getting Started Guide ca OL 14361 01 Chapter 5 Configuring Additional Router Features DETAILED STEPS Command or Action Configuring Telnet HTTP and XML Host Services W Purpose Step1 configure Enters global configuration mode Example RP 0 RPO CPU0 router configure Step2 telnet ipv4 server max servers limit Enables Telnet services on the router and specifies the or maximum number of allowable Telnet servers telnet ipv6 server max servers limit Example RP 0 RPO CPU0 router config telnet ipv4 server max servers 5 Step3 http server Enables HTTP server on the router Example RP 0 RPO CPU0 router config http server Step4 xml agent corba Enables XML CORBA agent services on the router Example RP 0 RPO CPU0 router config xml agent corba Step5 end Saves configuration changes or commit e When you issue the end command the system prompts you to commit changes Example Uncommitted
18. g to multiple user groups Step5 Repeat Step 4 for each user group to be associated with the user specified in Step 2 Step6 commit Example RP 0 RPO CPU0 router config un commit Saves configuration changes and activates them as part of the running configuration Related Documents Document Title Related Topic Create users assign users to user groups create and modify user groups and configure remote AAA access Cisco IOS XR System Security Configuration Guide Cisco IOS XR Getting Started Guide OL 14361 01 Chapter 5 Configuring Additional Router Features Configuring Software Entitlement W Configuring Software Entitlement Beginning in Cisco IOS XR Software Release 3 5 0 certain software and hardware features are enabled using software entitlement Software entitlement is a system that consists of a license manager on a Cisco IOS XR device that manages licenses for various software and hardware features The license manager parses and authenticates a license before accepting it The software features on the router use the license manager APIs to check out and release licenses Licenses are stored in persistent storage on the router All core routing features are available for use without any license In Cisco IOS XR Software Release 3 6 0 the following features must be enabled with licenses e Layer 3 VPN e Modular services card bandwidth e Cisco XR 12000 SIP 401 bandw
19. he keyword diskspace and number of kilobytes to reclaim RP 0 0 CPU0 router clear configuration commit diskspace 50 Deleting 4 rollback points 1000000001 to 1000000004 64 KB of disk space will be freed Continue with deletion confirm To delete a specific number of the oldest commitIDs enter the clear configuration commit command followed by the keyword oldest and number of commitIDs to delete RP 0 0 CPU0 router clear configuration commit oldest 5 Deleting 5 rollback points 1000000005 to 1000000009 80 KB of disk space will be freed Continue with deletion confirm OL 14361 01 Cisco 10S XR Getting Started Guide Chapter5 Configuring Additional Router Features WE Configuring Logging and Logging Correlation Configuring Logging and Logging Correlation System messages generated by the Cisco IOS XR software can be logged to a variety of locations based on the severity level of the messages For example you could direct information messages to the system console and also log debugging messages to a network server In addition you can define correlation rules that group and summarize related events generate complex queries for the list of logged events and retrieve logging events through an XML interface The following sections describe logging and the basic commands used to log messages in Cisco IOS XR software e Logging Locations and Severity Levels page 5 114 e Alarm Logging Correlation page 5 115
20. idth e Cisco XR 12000 SIP 501 bandwidth e Cisco XR 12000 XIP 601 bandwidth Refer to the Software Entitlement on Cisco IOS XR Software module in Cisco IOS XR System Management Configuration Guide for more information on configuring software licenses Configuration Limiting gt Caution The Cisco IOS XR software places preset limits on the configurations you can apply to the running configuration of a router These limits ensure that the router has sufficient system resources such as RAM for normal operations Under most conditions these preset limits are sufficient In some cases for which a large number of configurations is required for a particular feature it may be necessary to override the preset configuration limits This override can be done only if configurations for another feature are low or unused For example if a router requires a large number of BGP configurations and Multiprotocol Label Switching MPLS is not being used at all then the BGP limits can be increased to use the unused memory assigned to MPLS Overriding the default configuration limits can result in a low memory condition The following sections describe the limits you can configure default and maximum values and commands for configuring and displaying the configuration limits e Static Route Configuration Limits page 5 122 e IS IS Configuration Limits page 5 122 e OSPFv2 and v3 Configuration Limits page 5 123 e BGP Configuration Limits
21. ing User Accounts User accounts user groups and task groups are created by entering the appropriate commands in one of the AAA configuration submodes as shown in Figure 5 1 This section describes the process to configure usernames For instructions to configure user groups task groups and other AAA security features see the Cisco IOS XR System Security Configuration Guide Figure 5 1 AAA Configuration Submodes User login y EXEC mode y Global configuration mode commands AAA configuration submodes username username gt Username configuration submode usergroup usergroup name gt User group configuration submode taskgroup taskgroup name gt Task group configuration submode 116542 Creating Users and Assigning Groups To create a user assign a password and assign the user to a group perform the following procedure SUMMARY STEPS 1 configure 2 username user name 3 password 0 7 password or secret 0 5 password 4 group group name 5 Repeat Step 4 for each user group to be associated with the user specified in Step 2 6 commit Cisco IOS XR Getting Started Guide OL 14361 01 5 119 Chapter5 Configuring Additional Router Features WE Creating and Modifying User Accounts and User Groups DETAILED STEPS Command or Action Purpose Step1 configure Example RP 0 RPO CPU0 router configu
22. is part of the AAA feature in the Cisco IOS XR software AAA stands for authentication authorization and accounting a suite of security features included in the Cisco IOS XR software For more information on the AAA concepts and configuration tasks see Cisco IOS XR System Security Configuration Guide and Cisco IOS XR System Security Command Reference For instructions to activate software packages see Cisco IOS XR System Management Configuration Guide Displaying Details About User Accounts User Groups and Task IDs Table 5 3 summarizes the EXEC mode commands used to display details about user accounts user groups and task IDs Table 5 3 Commands to Display Details About Users and User Groups Command Description show aaa userdb username Displays the task IDs and privileges assigned to a specific username To display all users on the system enter the command without a username show aaa usergroup usergroup name Displays the task IDs and privileges that belong to a user group To display all groups on the system enter the command without a group name show task supported Displays all task IDs for the system Only the root system users root lr users or users associated with the WRITE AAA task ID can configure task groups Cisco IOS XR Getting Started Guide ca OL 14361 01 Chapter5 Configuring Additional Router Features Creating and Modifying User Accounts and User Groups W Configur
23. le 5 5 summarizes 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 Show Current Settings Maximum Maximum Configuration Command Command Feature Limit Description Limit Limit Address Family Configuration Mode EXEC Mode Maximum number of prefixes 10 000 28 000 maximum redistributed prefixes n show isis adjacency redistributed into IS IS Number of active parallel paths 8 32 maximum paths n show isis route for each route on a Cisco CRS 1 router Number of active parallel paths 8 16 maximum paths n show isis route for each route on a Cisco XR 12000 Series Router Cisco IOS XR Getting Started Guide OL 14361 01 Chapter 5 Configuring Additional Router Features Examples Configuration Limiting W 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 CPUO RP 0 RP1 CPUO RP 0 RP1 CPUO RP 0 RP1 CPUO RP 0 RP1 CPUO RP O0 RP1 CPUO committed by user the changes RP O RP1 C router configure router config router isis 100 address family ipv4 router config isis af maximum paths 10 router config isis af maximum redistributed prefixes 12000 router config isis af commit Mar 30 14 11 07 cisco config 657
24. lete descriptions of the domain services Implementing Host Services and Applications on Cisco IOS XR Software module in Cisco IOS XR IP Addresses and Services Configuration Guide commands OL 14361 01 Cisco 10S XR Getting Started Guide Chapter5 Configuring Additional Router Features HZ Configuring Telnet HTTP and XML Host Services Configuring Telnet HTTP and XML Host Services For security some host services are disabled by default Host services such as Telnet Extensible Markup Language XML and HTTP can be optionally enabled using the commands described in this section Host services provide the following features e Enabling the Telnet server allows users to log in to the router using IPv4 or IPv6 Telnet clients e Enabling the HTTP server allows users to log in to the router using the CWI e Enabling the XML agent enables XML Common Object Request Broker Architecture CORBA agent services so that you can manage and configure the router using an XML interface Prerequisites The following prerequisites must be met before configuring the Telnet HTTP and XML host services e For the XML and HTTP host services the Manageability package must be installed and activated on the router e To enable the Secure Socket Layer SSL of the HTTP and XML services the Security package must be installed and activated on the router See Cisco IOS XR System Management Configuration Guide for information on installin
25. 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 Loading Rollback Configuration Changes to the Target Configuration If the changes for a specific rollback point are close to what you want but a rollback is not appropriate you can load the rollback configuration changes 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 Tip To display the rollback changes enter the show configuration rollback changes command Cisco IOS XR Getting Started Guide OL 14361 01 Chapter 5 Configuring Additional Router Features Managing Configuration History and Rollback W To load rollback configuration changes from the current configuration to a specific session go to global configurati
26. mits for RPL lines and policies are summarized in Table 5 8 You can change the default values up to the absolute maximum but you cannot change the value to a number less than the number of items that are currently configured Table 5 8 Maximum Lines of RPL Configuration Limits and Commands Default Absolute Show Current Settings Maximum Maximum Configuration Command Command Limit Description Limit Limit Global Configuration Mode EXEC Mode Maximum number of RPL lines 65 536 131 072 rpl maximum lines n show rpl maximum lines Maximum number of RPL policies 3500 5000 rpl maximum policies n show rpl maximum policies OL 14361 01 Cisco IOS XR Getting Started Guide Chapter5 Configuring Additional Router Features WE Configuration Limiting Examples In the following example the show rp maximum command is used in EXEC mode to display the current setting for RPL limits and number of each limit currently in use A summary of the memory used by all of the defined policies is also shown below the limit settings RP 0 RP1 CPU0 router show rpl maximum Current Current Max Total Limit Limit Lines of configuration 0 65536 131072 Policies 0 3500 5000 Compiled policies size kB 0 RP 0 RP1 CPU0 router In the next example the rp maximum command changes the currently configured line and policy limits The show rpl maximum command displays the new settings RP 0 RP1 CPU0 router configure RP 0 RP1 CP
27. mmit list SNo Label ID User Line Client Time Stamp 1 1000000219 cisco vty0 CLI 12 27 50 UTC Wed Mar 22 2006 2 1000000218 cisco vty1 CLI 11 43 31 UTC Mon Mar 20 2006 3 1000000217 cisco con0_RP0_C CLI 17 44 29 UTC Wed Mar 15 2006 RP 0 RP1 CPU0 router admin RP 0 RP1 CPU0 router admin show configuration commit list SNo Label ID User Line Client Time Stamp 2000000022 cisco vty1 CLI 15 03 59 UTC Fri Mar 17 2006 2 2000000021 cisco con0_RP0_C CLI 17 42 55 UTC Wed Mar 15 2006 3 2000000020 SYSTEM con0_RP0_C Setup Dial 17 07 39 UTC Wed Mar 15 2006 Displaying the Configuration Changes Recorded in a CommitID To display the configuration changes made during a specific commit session commitID go to EXEC or administration EXEC mode and enter the show configuration commit changes command followed by acommitID number The easiest way to determine the commitID is to enter the show configuration commit changes command first In the following example the command help is used to display the available commitIDs and then the changes for a specific commitID are displayed RP 0 RP1 CPU0 router admin show configuration commit changes last Changes made in the most recent lt n gt commits since Changes made since and including a specific commit 2000000020 Commit ID 2000000021 Commit ID 2000000022 Commit ID RP 0 RP1 CPU0 router admin show configuration commit changes 2000000020 Building configuration username cisco secret 5 1
28. n Command Show Current Settings Command EXEC Mode Maximum traffic engineer TE tunnels head 2500 65536 mpls traffic eng maximum tunnels n show mpls traffic eng maximum tunnels Other Configuration Limits Table 5 11 summarizes the maximum limits for additional configuration limits including the commands used to display and change the limits Table 5 11 Additional Configuration Limits and Commands Default Absolute Show Current Settings Maximum Maximum Configuration Command Command Limit Description Limit Limit Global Configuration Mode EXEC Mode IPv4 ACL 5000 16000 ipv4 access list maximum show access lists ipv4 access list and prefix list acl threshold n maximum IPv4 ACE 200 000 350 000 ipv4 access list maximum show access lists ipv4 access list and prefix list ace threshold n maximum IPv6 ACL 1000 16000 ipv6 access list maximum _ show access lists ipv6 access list and prefix list acl threshold n maximum IPv6 ACE 50 000 350 000 ipv6 access list maximum show access lists ipv6 access list and prefix list ace threshold n maximum Cisco IOS XR Getting Started Guide OL 14361 01
29. nfiguration ommitted by user cisco Use show configuration commit changes 1000000540 to view he changes P O RP1 CPU0 Mar 30 16 12 39 config 65740 SYS 5 CONFIG_I Configured from console y cisco wD w oF RP O RP1 CPU0 router show ospf Routing Process ospf 100 with ID 0 0 0 0 Supports only single TOS TOSO routes Supports opaque LSA It is an area border router Initial SPF schedule delay 5000 msecs Minimum hold time between two consecutive SPFs 10000 msecs Maximum wait time between two consecutive SPFs 10000 msecs Initial LSA throttle delay 500 msecs Minimum hold time for LSA throttle 5000 msecs Maximum wait time for LSA throttle 5000 msecs Minimum LSA interval 5 secs Minimum LSA arrival 1 secs Maximum number of configured interfaces 600 More Cisco IOS XR Getting Started Guide P5124 E OL 14361 01 Chapter 5 Configuring Additional Router Features Configuration Limiting W Maximum Routes Redistributed into OSPF Example In the following example the maximum redistributed prefixes command is used to set the maximum routes redistributed into OSPF RP 0 RP1 CPU0 router configure RP 0 RP1 CPU0 router config router ospf 100 RP 0 RP1 CPU0 router config router maximum redistributed prefixes 12000 RP 0 RP1 CPU0 router config router end Uncommitted changes found commit them yes y P O RP1 CPU0 Mar 30 16 26 52 config 65740 LIBTARCFG 6 COMMIT Configuration
30. ogs and isolate the root causes of the messages For example the original message describing a card online insertion and removal OIR and system state being up or down can be reported and all subsequent messages reiterating the same event can be correlated When you create correlation rules a common root event that is generating larger volumes of follow on error messages can be isolated and sent to the correlation buffer An operator can extract all correlated messages for display later should the need arise See Cisco IOS XR System Management Configuration Guide for more information Configuring Basic Message Logging Numerous options for logging system messages in Cisco IOS XR software are available This section provides a basic example To configure basic message logging complete the following steps SUMMARY STEPS 1 configure 2 logging ip address hostname 3 logging trap severity 4 logging console severity 5 logging buffered severity buffer size 6 commit 7 end 8 show logging DETAILED STEPS Command or Action Purpose Step1 configure Enters global configuration mode Example RP O0 RPO CPU0 router configure Step2 logging ip address hostname Specifies a syslog server host to use for system logging Example RP 0 RPO CPU0 router config logging 10 1 1 1 Step3 logging trap severity Limits the logging of messages sent to syslog servers to only those messages at the specified level Example e S
31. on or administration configuration mode and enter the load rollback changes to commitld command RP 0 0 CPU0 router config load rollback changes to 1000000068 Building configuration Loading 233 bytes parsed in 1 sec 231 bytes sec To load rollback configuration changes from the current configuration to a specified number of previous sessions go to global configuration or administration configuration mode and enter the load rollback changes last commit range command RP 0 0 CPU0 router config load rollback changes last 6 Building configuration Loading 221 bytes parsed in 1 sec 220 bytes sec In the preceding example the command loads the rollback configuration changes for the last six commitIDs To load the rollback configuration for a specific commitID go to global configuration or administration configuration mode and enter the load rollback changes commitId command RP 0 0 CPU0 router config load rollback changes 1000000060 Building configuration Loading 199 bytes parsed in 1 sec 198 bytes sec Deleting CommitlDs You can delete the oldest configuration commitIDs by entering the clear configuration commit command in EXEC or administration EXEC mode The clear configuration commit command must be followed by either the amount of disk space you want to reclaim or number of commitIDs you want to delete To reclaim disk space from the oldest commitIDs enter the clear configuration commit command followed by t
32. ow hosts command in EXEC mode to display the default domain name the style of name lookup service a list of name server hosts and the cached list of hostnames and addresses OL 14361 01 Cisco 10S XR Getting Started Guide Chapter5 Configuring Additional Router Features WE Configuring the Domain Name and Domain Name Server To configure the DNS and DNS server complete the following steps SUMMARY STEPS 1 configure 2 domain name domain name of organization 3 domain name server ipv4 address 4 commit or end 5 show hosts DETAILED STEPS Command or Action Purpose Step1 configure Enters global configuration mode Example RP 0 RPO CPU0 router configure Step2 domain name domain name of organization Defines a default domain name used to complete unqualified hostnames Example RP 0 RPO CPU0 router config domain name cisco com Step3 domain name server ipv4 address Specifies the address of a name server to use for name and address resolution hosts that supply name information Example Note You can enter up to six addresses but only one for RP 0 RPO CPU0 router config domain each command name server 192 168 1 111 Cisco IOS XR Getting Started Guide ca OL 14361 01 Chapter5 Configuring Additional Router Features Command or Action Configuring the Domain Name and Domain Name Server W Purpose Step4 end or commit Example RP 0 RPO CPU0 router config end
33. re Enters global configuration mode Step2 username user name Example RP 0 RPO CPU0 router config username userl Creates a name for a new user or identifies a current user and enters username configuration submode e The user name argument can be only one word Spaces and quotation marks are not allowed Step3 password 0 7 password or secret 0 5 password Example RP 0 RPO CPU0 router config un password 0 pwd or RP 0 RPO CPU0 router config un secret 5 pwdl Specifies a password for the user named in Step 2 e Use the secret command to create a secure login password for the user names specified in Step 2 e Entering 0 following the password command specifies that an unencrypted clear text password follows Entering 7 following the password command specifies that an encrypted password follows e Entering 0 following the secret command specifies that a secure unencrypted clear text password follows Entering 5 following the secret command specifies that a secure encrypted password follows e Type 0 is the default for the password and secret commands Step 4 group group name Example RP 0 RPO CPU0 router config un group sysadmin Assigns the user named in Step 2 to a user group e The user takes on all attributes of the user group as defined by the user group association to various task groups e Fach user must be assigned to at least one user group A user may belon
34. re automatically saves up to 100 of the most recent commitIDs The following sections describe how to manage configuration changes and roll back to a previously committed configuration e Displaying the CommitIDs page 5 109 e Displaying the Configuration Changes Recorded in a CommitID page 5 109 e Previewing Rollback Configuration Changes page 5 110 e Rolling Back the Configuration to a Specific Rollback Point page 5 110 e Rolling Back the Configuration over a Specified Number of Commits page 5 111 e Loading CommitID Configuration Changes to the Target Configuration page 5 111 Cisco 10S XR Getting Started Guide OL 14361 01 Chapter5 Configuring Additional Router Features Managing Configuration History and Rollback W e Loading Rollback Configuration Changes to the Target Configuration page 5 112 e Deleting CommitIDs page 5 113 Displaying the CommitIDs To display a history of up to 100 of the most recent commitIDs enter the show configuration commit list command in EXEC or administration EXEC mode Up to 100 of the most recent commitIDs are saved by the system Each commitID entry shows the user who committed configuration changes the connection used to execute the commit and commitID time stamp The commitIDs are shown in the Label ID column The following example shows the show configuration commit list command display in EXEC and administration EXEC modes RP 0O RP1 CPU0 router show configuration co
35. refix command Table 5 7 summarizes the maximum configuration limits for BGP Table 5 7 BGP Configuration Limits and Commands Default Absolute Show Current Settings Maximum Maximum Configuration Command Command Feature Limit Description Limit Limit Router Configuration Mode EXEC Mode Maximum number of neighbors 4000 15000 bgp maximum neighbor None peers limit IPv4 unicast maximum prefixes 524 288 4 294 967 maximum prefix n show bgp neighbor P_address that can be received from a 295 neighbor OL 14361 01 Cisco IOS XR Getting Started Guide Chapter 5 Configuring Additional Router Features W Configuration Limiting Table 5 7 BGP Configuration Limits and Commands continued Default Absolute Show Current Settings Maximum Maximum Configuration Command Command Feature Limit Description Limit Limit Router Configuration Mode EXEC Mode IPv4 multicast maximum prefixes 131 072 4 294 967 maximum prefix n show bgp neighbor P_address that can be received from a 295 neighbor IPv6 unicast maximum prefixes 131 072 4 294 967 maximum prefix n show bgp neighbor P_address that can be received from a 295 neighbor IPv6 multicast maximum prefixes 131 072 4 294 967 maximum prefix n show bgp neighbor P_address that can be received from a 295 neighbor IPv6 labeled unicast maximum 131 072 4 294 967 maximum prefix n show bgp neighbor P_address prefixes that can be receiv
36. s less than the number of prefixes that have already been received from the neighbor The following example shows how to set the BGP configuration limits RP O0 RP1 CPU0 router configure RP 0 RP1 CPU0 router config router bgp 100 RP 0 RP1 CPU0 router config bgp neighbor 10 1 1 1 RP 0 RP1 CPU0 router config bgp nbr remote as 1 RP 0 RP1 CPU0 router config bgp nbr address family ipv4 unicast RP 0 RP1 CPU0 router config bgp nbr af maximum paths 4 RP 0 RP1 CPU0 router config bgp nbr af maximum prefix 100000 RP 0 RP1 CPU0 router config bgp nbr af commit RP O RP1 CPU0 Mar 30 19 13 16 config 65740 LIBTARCFG 6 COMMIT Configuration committed by user cisco Use show configuration commit changes 1000000544 to view the changes RP O RP1 CPU0 Mar 30 19 13 17 config 65740 SYS 5 CONFIG_I Configured from console by cisco RP 0 RP1 CPU0 router config bgp nbr af Routing Policy Language Line and Policy Limits Two limits for Routing Policy Language RPL configurations exist 1 Number of RPL lines The number of configuration lines entered by the user including the beginning and ending statements that is route policy The number of configuration lines for sets is also included 2 Number of RPL policies The number of policies that can be configured on the router Policies are counted only once Multiple use of the same policy counts as a single policy toward the limit 1 The li
37. s of the HTTP and XML server commands Manageability Commands on Cisco IOS XR Software module of Cisco IOS XR System Management Command Reference Descriptions of the Telnet commands Host Services and Applications Commands on Cisco IOS XR Software module of Cisco IOS XR IP Addresses and Services Command Reference Managing Configuration History and Rollback After each commit operation a record of the committed configuration changes is saved This record contains only the changes made during the configuration session it does not contain the complete configuration Each record is assigned a unique ID known as a commitID When multiple commitIDs are present you can use a commitID to identify a previous configuration to which you want to return or you can use the commitID to load the configuration changes made during that configuration session You can also load configuration changes from multiple commitIDs and you can clear commitIDs If you are thinking about rolling back the configuration to a specific commitID consider the following guidelines e You cannot roll back to a configuration that was removed because of package incompatibility Configuration rollbacks can succeed only when the configuration passes all compatibility checks with the currently active Cisco IOS XR software e If an incompatible configuration is found during the rollback operation the operation fails and an error is displayed The Cisco IOS XR softwa
38. tems sec Updating Updated Commit database in 1 sec Configuration successfully rolled back 2 commits 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 OL 14361 01 Cisco 10S XR Getting Started Guide fi Chapter5 Configuring Additional Router Features W Managing Configuration History and Rollback amp 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 lt n gt commits since Changes
39. tration EXEC mode and enter the rollback configuration to commitId command RP 0 RP1 CPU0 router rollback configuration to 1000000220 Loading Rollback Changes Loaded Rollback Changes in 1 sec Committing 2 items committed in 1 sec 1 items sec Updating Updated Commit database in 1 sec Configuration successfully rolled back to 1000000220 Rolling Back the Configuration over a Specified Number of Commits When you roll back the configuration over a specific number of commits you do not have to enter a specific commit ID Instead you specify a number x and the software undoes all configuration changes made in the last x committed configuration sessions The rollback process rolls back the configuration commits the rolled back configuration and creates a new commitID for the previous configuration Tip To preview the commands that undo the configuration during a rollback use the show configuration rollback changes command To roll back to the last x commits made go to EXEC or administration EXEC mode and enter the rollback configuration last x command x is a number ranging from 1 to the number of saved commits in the commit database In the following example a request is made to roll back the configuration changes made during the previous two commits RP 0 RPO CPU0 router rollback configuration last 2 Loading Rollback Changes Loaded Rollback Changes in 1 sec Committing 1 items committed in 1 sec 0 i
40. xample RP 0 RPO CPU0 router show logging Displays the messages that are logged in the buffer Examples In the following example basic message logging is configured P 0 P 0 P 0 P 0 P 0 P 0 P 0 P 0 P0 CPU0 router configure PO0 CPU0 router PO CPU0 router PO CPU0 router config PO CPU0 router config PO CPU0 router config end PO CPU0 router show logging config AAA A AAA A R R R R R R R R PO CPU0 router config logging 10 1 1 1 config logging trap debugging logging console emergencies logging buffered 1000000 commit Syslog logging enabled 162 messages dropped 0 flushes 0 overruns Console logging level emergencies Monitor logging level debugging Trap logging level debugging 593 messages logged 0 messages logged 2 messages logged Logging to 10 1 1 1 2 message lines logged Buffer logging level debugging Log Buffer 1000000 bytes 722 messages logged Cisco 10S XR Getting Started Guide OL 14361 01 Chapter 5 Configuring Additional Router Features AA A C 0 1 CPU0 Apr C 0 6 CPU0 Apr 5 ADE C 0 1 CPU0 Apr C 0 6 CPU0 Apr s AAAAAE More Related Documents Related Topic P 0 RPO CPU0 Apr P 0 RPO CPU0 Apr P 0 RPO CPU0 Apr P 0 RPO CPU0 Apr P 0 RP1 CPU0 Apr P 0 RPO CPU0 Apr P 0 RP1 CPU0 Apr P 0 RPO CPU0 Apr P 0 RPO CPU0 Apr P 0 RPO CPU0 Apr 8
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