How To Implement Ospf; Enabling Ospf - Cisco ASR 9000 Series Configuration Manual

How to Implement OSPF

computation is started. Use the UCMP delay-interval command to configure the delay between primary SPF
completion and start of UCMP computation. UCMP computation will be done during the fast re-route
computation (IPFRR does not need to be enabled for UCMP computation to be performed). If IPFRR is
enabled, the fast re-route backup paths will be calculated for both the primary equal cost multipath ( ECMP)
paths and the UCMP paths.
To manually adjust UCMP ratio, use any command that changes the metric of the link.
• By using the bandwidth command in interface configuration mode
• By adjusting the OSPF interface cost on the link
How to Implement OSPF
This section contains the following procedures:

Enabling OSPF

This task explains how to perform the minimum OSPF configuration on your router that is to enable an OSPF
process with a router ID, configure a backbone or nonbackbone area, and then assign one or more interfaces
on which OSPF runs.
Before You Begin
Although you can configure OSPF before you configure an IP address, no OSPF routing occurs until at least
one IP address is configured.
SUMMARY STEPS
1. configure
2. Do one of the following:
3. router-id { router-id }
4. area
5. interface type interface-path-id
6. Repeat Step 5 for each interface that uses OSPF.
7. log adjacency changes [ detail ] [ enable | disable ]
8. commit
DETAILED STEPS
Command or Action
Step 1 configure
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.1.x
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• router ospf process-name
• router ospfv3 process-name
area-id
Purpose
Implementing OSPF
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