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Cisco Systems IOS XR manual

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Table of contents for the manual

  • Page 1

    CH A P T E R 3-1 Cisco I OS XR Ge tting S tarted Gu ide 3 Configuring Additional Router Features This chapter contains instructio ns and information for enteri ng basic conf igurations usin g the command-line interface (CLI). Contents This chapter contains the following sections: • Config uring the Domain Name and Domain Name Server , page 3-1 ?[...]

  • Page 2

    3-2 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuring Telnet, HTTP, an d XML Host Services T o conf igure the DN S and DNS server , complete the following steps: SUMMARY STEPS 1. conf igure 2. domain name domain-name-of-or ganization 3. domain name-server ipv4-ad dr ess 4. commit 5. end 6. show hosts [...]

  • Page 3

    3-3 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Managing Configuration Histor y and Rollback Prerequisites The follo wing prerequisites must be met before co nf iguring the T elnet, HTTP , and XML host services: • For the XML and HTTP host services, the Manageab ility package must be installed and acti[...]

  • Page 4

    3-4 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Managing Configuration History and Rollbac k When multiple commit IDs are present, you can use a comm itID to identify a pre vious conf iguration to which you wa nt to return, o r you can use the comm itID to load the co nf iguration changes made d uring that [...]

  • Page 5

    3-5 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Managing Configuration Histor y and Rollback The commitIDs are sho wn in the “Label/ID” co lumn. The follo w ing examp le sho ws the show conf iguration commit list command display: RP/0/RP0/CPU0:router# show configuration commit list SNo. Label/ID User[...]

  • Page 6

    3-6 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Managing Configuration History and Rollbac k RP/0/RP0/CPU0:router# show configuration commit history SNo. Label/ID User Line Client Time Stamp ~~~~ ~~~~~~~~ ~~~~ ~~~~ ~~~~~~ ~~~~~~~~~~ 1 1000000144 user_a vty0 CLI 00:16:51 UTC Thu May 11 2004 2 1000000143 user[...]

  • Page 7

    3-7 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Managing Configuration Histor y and Rollback T o di splay the prospect i ve rollback con figur ation changes from the current co nf iguration to a specific session, enter the show confi guration rollback changes t o commitId command: RP/0/RP0/CPU0:router# s[...]

  • Page 8

    3-8 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Managing Configuration History and Rollbac k Ti p T o pre vie w the commands that undo the config uration during a r ollback, use the sho w conf iguration rollback changes command. T o r oll back to the last x commits made, enter the r ollback conf iguration l[...]

  • Page 9

    3-9 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Saving and Loading Targ et Configuration Files T o load rollback conf ig uration changes from the current conf igur ation to a specific session, enter the load r ollback changes to commitId command: RP/0/0/CPU0:router(config)# load rollback changes to 10000[...]

  • Page 10

    3-10 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Saving and Loading Tar get Configuration Files Saving the Target Configuration to a File T o sa ve the configuration changes in the tar get confi guration to a f ile, enter the show conf iguration | f ile f ilename command. • If the full path of th e file i[...]

  • Page 11

    3-11 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuring Logging and Logging Correlation Configuring Logging and Logging Correlation System messages generated b y the Cisco IOS XR softwa re can be logged to a v ariety of locations b ased on the se verity le vel o f the messages. F or e xample, you co[...]

  • Page 12

    3-12 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuring Logg ing and Logging Correlation For e xample, the original message descr ibing a card online insertion and remo v al (OIR) and system state being up or d o wn can be re ported, and al l subsequent messages reitera ting the same event can be co r [...]

  • Page 13

    3-13 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuring Logging and Logging Correlation Examples In the follo wing example, basic m essage logging is conf igured: RP/0/RP0/CPU0:router# config RP/0/RP0/CPU0:router(config)# logging 10.1.1.1 RP/0/RP0/CPU0:router(config)# logging trap debugging RP/0/RP0[...]

  • Page 14

    3-14 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Creating and M odifying User Accou nts and User Groups RP/0/RP0/CPU0:Apr 6 21:30:59.515 : alphadisplay[103][317]: alpha_display_drain_ queue: Draining 1 message from the queue of size = 1 RP/0/RP0/CPU0:Apr 6 21:31:03.099 : ingressq[227]: %INGRESSQ_DLL-3-HALF_[...]

  • Page 15

    3-15 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Creating and Modifying User Accou nts and User Groups Displaying Details About User Accounts, User Groups, and Task IDs Ta b l e 3 - 3 summarizes the EXEC mode commands used to display details about user accounts, user groups, and task IDs. T able 3-3 Comm[...]

  • Page 16

    3-16 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Creating and M odifying User Accou nts and User Groups Creating Users and Assigning Groups T o cr eate a user , assign a password, and assign the user to a g roup, perform the foll owing procedure: SUMMARY STEPS 1. conf igure 2. username user -name 3. passwor[...]

  • Page 17

    3-17 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting Related Documents For more inf ormation on conf iguration an d management of users and user access pri vileges, se e the following Cisco d ocuments: Configuration Limiting The Cisco IOS XR software places preset limit s on the conf i[...]

  • Page 18

    3-18 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting The follo wing sections d escribe the limits you can conf igure, default and maximum v alues, and commands for conf iguring and displaying the conf iguration limits: • Static Route Conf iguration Limits, page 3-18 • IS-IS Conf igura[...]

  • Page 19

    3-19 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting IS-IS Configuration Limits Ta b l e 3 - 5 summarizes the maximum limits for IS-IS, includi ng the commands used to display and change the limits. T able 3-5 IS-IS Configur ation Limits and Commands Examples In the follo w ing exampl [...]

  • Page 20

    3-20 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting T able 3-6 OSPFv2 and OSPFv3 Configu ration Limi ts and Commands Examples The follo wing subsections provide the follo wing examples: • Maximum Interfaces for Each OSPF Instance, page 3-21 • Maximum Routes Redistrib uted into OSPF ,[...]

  • Page 21

    3-21 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting Maximum Interfaces for Each OSPF Instance In the following e xample, the show ospf command is used to display the maximum number of OSPF interfaces: RP/0/RP1/CPU0:router# show ospf Routing Process "ospf 100" with ID 0.0.0.0[...]

  • Page 22

    3-22 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting Maximum Routes Redistributed int o OSPF In the follo wing ex ample, the maximum redistri buted-pr efixes command i s used to se t the maxi mum routes redistrib uted into OSPF: RP/0/RP1/CPU0:router# configure RP/0/RP1/CPU0:router(config)[...]

  • Page 23

    3-23 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting IPv4 multicast maximum pref ixes that can be recei ve d from a neighbor 131,072 4,294,967, 295 maximum-pr ef ix n show bgp nei ghbor IP_addr ess IPv6 1 unicast maximum pref ixes that can be recei ve d from a neighbor 131,072 4,294,96[...]

  • Page 24

    3-24 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting A cease-notification message is sent to the neighbo r and the peering with the neighb or is terminated when the number of prefix es rece iv ed from the peer for a gi ven ad dress f amily e xceeds the maximum limit (either set by def aul[...]

  • Page 25

    3-25 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting Examples In the following e xample, the show rpl maximum command is used in EXEC mode to di splay the current setting for RPL limits and nu mber of each limit currently in use. A summary of the memory used by all of the def ined poli[...]

  • Page 26

    3-26 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting Multicast Configuration Limits Ta b l e 3 - 9 summarizes the maximum limits for multicast conf iguration, including the co mmands used to display and change the li mits. T able 3-9 Multicast Confi gur ation Limits and Commands Feature L[...]

  • Page 27

    3-27 Cisco I OS XR Ge tting S tarted Gu ide Chapter 3 Configuri ng Additional Router Features Configuration Limiting MPLS Configuration Limits Ta b l e 3 - 1 0 summarizes the maximum limits for MPLS conf iguration, including t he commands used to display and change the limits. T able 3-1 0 MPLS Configur ation Limits and Com mands Other Configuratio[...]

  • Page 28

    3-28 Cisco IOS XR Getting Started Guide Chapter 3 Configuring Add itional Router Featur es Configuration Limiting[...]