Specifications

Implementing OSPF on Cisco IOS XR Software
How to Implement OSPF on Cisco IOS XR Software
RC-243
Cisco IOS XR Routing Configuration Guide
SUMMARY STEPS
1. configure
2. router ospf process-name
or
router ospfv3 process-name
3. router-id {router-id}
4. area area-id
5. interface type instance
6. Repeat Step 5 for each interface that uses OSPF.
7. log adjacency changes [detail] [enable | disable]
8. end
or
commit
DETAILED STEPS
Command or Action Purpose
Step 1
configure
Example:
RP/0/RP0/CPU0:router# configure
Enters global configuration mode.
Step 2
router ospf process-name
or
router ospfv3 process-name
Example:
RP/0/RP0/CPU0:router(config)# router ospf 1
or
RP/0/RP0/CPU0:router(config)# router ospfv3 1
Enables OSPF routing for the specified routing process and
places the router in router configuration mode.
or
Enables OSPFv3 routing for the specified routing process
and places the router in router ospfv3 configuration mode.
Note The process-name argument is any alphanumeric
string no longer than 40 characters.
Step 3
router-id { router-id }
Example:
RP/0/RP0/CPU0:router(config-ospf)# router-id
192.168.4.3
Configures a router ID for the OSPF process.
Note We recommend using a stable IP address as the
router ID.
Step 4
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.
• Backbone areas have an area ID of 0.
• Nonbackbone areas have a nonzero area ID.
• 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. We recommend using the IPv4
address notation.