Cisco Systems IOS XR

Implementing OSPF on Cisco IOS XR Software

How to Implement OSPF on CiscoIOS XR Software

RC-234

Cisco IOS XR Routing Configuration Guide

DETAILED STEPS

Command or Action Purpose

Step1 configure

Example:

RP/0/RP0/CPU0:router# configure

Enters global configuration mode.

Step2 router ospf process-name

Example:

RP/0/RP0/CPU0:router(config)# router ospf 1

Enables OSPF routing for the specified routing process and

places the router in router configuration mode.

Note The process-name argument is any alphanumeric

string no longer than 40 characters.

Step3 area area-id

Example:

RP/0/RP0/CPU0:router(config-ospf)# area 0

Enters area configuration mode and configures an area for

the OSPF process.

•The area-id argument can be entered in dotted-decimal

or IPv4 address notation, such as area 1000 or

area 0.0.3.232. However, you must choose one form or

the other for an area.

Step4 interface type instance

Example:

RP/0/RP0/CPU0:router(config-ospf-vrf)#

interface POS 0/0/0/0

Enters interface configuration mode and associates one or

more interfaces to the VRF.

Step5 mpls ldp sync

Example:

RP/0/RP0/CPU0:router(config-ospf-ar)# mpls ldp

sync

Enables Label Distribution Protocol (LDP)-Interior

Gateway Protocol (IGP) synchronization.

Step6 end

commit

Example:

RP/0/RP0/CPU0:router(config-ospf-ar-if)# end

RP/0/RP0/CPU0:router(config-ospf-ar-if)# commit

Saves configuration changes.

•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.

•Use the commit command to save the configuration

changes to the running configuration file and remain

within the configuration session.