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Cisco Systems OL-14361-01 manual

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Table of contents for the manual

  • Page 1

    CH A P T E R 5-103 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 5 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 • Config uring the Domain Name and Domain Name Server , page 5-103 • Config uring T elnet, HTTP ,[...]

  • Page 2

    5-104 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Configuring the Doma in Name and Domain Name Server T o conf igure the DNS and DNS server , c omplete 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 or e[...]

  • Page 3

    5-105 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Configuri ng the Domain Name and Domain Name Server Examples In the following e xample, the doma in name and DNS are configured: RP/0/RP0/CPU0:router# configure RP/0/RP0/CPU0:router(config)# domain name cisco.com RP/0/RP0/CPU0:router(config)# [...]

  • Page 4

    5-106 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Configuring Telnet, HTTP, an d XML Host Services Configuring Telnet, HTTP, and XML Host Services For security , some host services are disabled b y de fault. Host services, such as T elnet, Extensible Markup Language (XML), and H TTP , can be opt[...]

  • Page 5

    5-107 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Configuring Telnet, HTTP, a nd XML Host Services DETAILED ST EPS Command or Action Purpose Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters global conf iguration mode. Step 2 telnet ipv4 server max-servers limit or telnet ipv6 [...]

  • Page 6

    5-108 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Managing Configuration History and Rollbac k Examples In the follo wing example, th e host services are enabled: RP/0/RP0/CPU0:router# configure RP/0/RP0/CPU0:router(config)# telnet ipv6 server max-servers 5 RP/0/RP0/CPU0:router(config)# http ser[...]

  • Page 7

    5-109 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Managing Configuration Histor y and Rollback • Loading Rollback Con fi guration Chan ges to the T arget Conf igurat ion, page 5-112 • Deleting CommitIDs, pag e 5-113 Displaying the CommitIDs T o displ ay a history of up to 10 0 of the most[...]

  • Page 8

    5-110 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Managing Configuration History and Rollbac k Previewing Rollback Configuration Changes The show conf iguration rollback changes command allo ws you to pre view the conf iguration changes that take place if you roll back th e configuration to a sp[...]

  • Page 9

    5-111 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Managing Configuration Histor y and Rollback Ti p T o pre vie w the commands that undo the config uration during a r ollback, use the show confi guration rollback changes command. T o rol l back the router conf iguration to a pre viously commi[...]

  • Page 10

    5-112 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Managing Configuration History and Rollbac k Note Unlike the rollback process, lo ading the commitID conf iguration changes loads only the changes made during that commit operati on. The load process does not load all chan ges made between the co[...]

  • Page 11

    5-113 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Managing Configuration Histor y and Rollback T o load roll back config uration changes from the current conf iguration to a specif ic session, go to global confi guration or administratio n config uration mode and enter the load rollback chang[...]

  • Page 12

    5-114 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Configuring Logg ing and Logging Correlation Configuring Logging and Logging Correlation System messages generated b y the Cisco IOS XR softw a 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 xa[...]

  • Page 13

    5-115 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Configuring Logging and Logging Correlation Alarm Logging Correlation Alarm logging c or re la tio n i s u sed to gro up and fi lter similar messages to reduce the amount of redundant logs and isolate the root causes of the messages. For e xam[...]

  • Page 14

    5-116 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Configuring Logg ing and Logging Correlation Examples In the follo wing example, basic m essage logging is conf igured: RP/0/RP0/CPU0:router# configure RP/0/RP0/CPU0:router(config)# logging 10.1.1.1 RP/0/RP0/CPU0:router(config)# logging trap debu[...]

  • Page 15

    5-117 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Creating and Modifying User Accou nts and User Groups RP/0/RP0/CPU0:Apr 8 19:18:58.679 : instdir[203]: %INSTALL-INSTMGR-6-INSTALL_OP RP/0/RP0/CPU0:Apr 8 19:19:01.287 : instdir[203]: %INSTALL-INSTMGR-6-INSTALL_OP RP/0/RP0/CPU0:Apr 8 19:22:15.65[...]

  • Page 16

    5-118 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Creating and M odifying User Accou nts and User Groups Note The management of user accounts, user groups, and task IDs is p art of the “ A AA” feature in the Cisco IOS XR software. AAA st ands for “authenticatio n, authorization, an d accou[...]

  • Page 17

    5-119 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Creating and Modifying User Accou nts and User Groups Configuring User Accounts User accounts, user groups, and task groups are creat ed by entering the appropriat e commands in one of the “ AAA” configuration submod es, as sho wn in Figur[...]

  • Page 18

    5-120 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Creating and M odifying User Accou nts and User Groups DETAILED ST EPS Related Documents Command or Action Purpose Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters global conf iguration mode. Step 2 username user-name Example: RP/[...]

  • Page 19

    5-121 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Configuring Soft ware Entitlement Configuring Software Entitlement Beginni ng in Cisco IOS XR Software Release 3.5.0, cer tain software and hardwa re features are enabled using softwa re entitlement. Softw are entitlement i s a system that con[...]

  • Page 20

    5-122 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Configuration Limiting Static Route Configuration Limits Ta b l e 5 - 4 summarizes the maximum limits for static routes, in cluding the co mmands used to display and change the limits. Examples In the follo wing e xample, the maximum number of st[...]

  • Page 21

    5-123 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Configuration Limiting Examples In the follo w ing exampl e, the maximum number of acti ve parallel paths for each route i s increased to 10, and the maximum number of pref ixes redistrib uted into IS-IS is increased to 12,000: RP/0/RP1/CPU0:r[...]

  • Page 22

    5-124 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Configuration Limiting Examples The follo wing e xamples illustra te OSPF conf iguration limits: • Maximum Interfaces for Each OSPF Instance: Example, page 5-124 • Maximum Routes Redistributed i n to OSPF: Example, page 5-125 • Number of Pa[...]

  • Page 23

    5-125 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Configuration Limiting Maximum Routes Redistributed int o OSPF: Example In the follo wing example, the maximum r edistrib uted-pref ixes comm and is u sed to set th e maximum routes redistrib uted into OSPF: RP/0/RP1/CPU0:router# configure RP/[...]

  • Page 24

    5-126 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Configuration Limiting IPv4 multicast maximum pref ixes that can be recei ved f rom a neighbor 131,072 4,294,967, 295 maximum-pr ef ix n show bgp neighbor IP_addr ess IPv6 unicast maximum pref ixes that can be recei ved f rom a neighbor 131,072 4[...]

  • Page 25

    5-127 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Configuration Limiting A cease-notif ication message is sent to the neig hbo r and the peering with the nei ghbor is terminat ed when the number of pref ixes recei ved from the p eer for a gi ven address family e x ceeds the maximum limit (eit[...]

  • Page 26

    5-128 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es 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[...]

  • Page 27

    5-129 Cisco I OS XR Ge tting S tarted Gu ide OL-14361-01 Chapter 5 Configuri ng Additional Router Features Configuration Limiting Multicast Configuration Limits Ta b l e 5 - 9 summarizes the maximum limits for multicast conf iguration, including the commands used t o display and change the limits. T able 5-9 Multicast Co nfigur ation Limits and Com[...]

  • Page 28

    5-130 Cisco IOS XR Getting Started Guide OL-14361-01 Chapter 5 Configuring Add itional Router Featur es Configuration Limiting MPLS Configuration Limits Ta b l e 5 - 1 0 summarizes the maximum l imits for MPLS conf iguration, inclu ding the commands used to display and change the li mits. Other Configuration Limits Ta b l e 5 - 1 1 summarizes the m[...]