Specifications

Implementing OSPF on Cisco IOS XR Software
How to Implement OSPF on Cisco IOS XR Software
RC-284
Cisco IOS XR Routing Configuration Guide
Creating Multiple OSPF Instances (OSPF Process and a VRF)
This task explains how to create multiple OSPF instances. In this case, the instances are a normal OSPF
instance and a VRF instance.
SUMMARY STEPS
1. configure
2. router ospf process-name
3. area area-id
4. interface type instance
5. exit
6. vrf vrf-name
7. area area-id
8. interface type instance
9. 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
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.
Step 3
area area-id
Example:
RP/0/RP0/CPU0:router(config-ospf)# area 0
Enters area configuration mode and configures a backbone
area.
• 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.
Step 4
interface type instance
Example:
RP/0/RP0/CPU0:router(config-ospf-ar)# interface
POS 0/1/0/3
Enters interface configuration mode and associates one or
more interfaces to the area.