Cisco Systems IOS XR Creating Multiple OSPF Instances (OSPF Process and a VRF)

Implementing OSPF on Cisco IOS XR Software

How to Implement OSPF on CiscoIOS XR Software

RC-235

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

commit

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 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.

Step4 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.