Specifying an OSPF Router ID

The router ID is typically derived by each router from its interface IP addresses. However, you can use the router-id command to specify a different router ID for OSPF.

Note: You must specify a router ID to enable OSPFv3.

router-id

• Use to specify a different IP address for the router to use as the OSPF router ID.
• Example

  host1(config-if)#router-id 192.168.50.5

• Use the no version to force OSPF to use the previous OSPF router ID behavior.
• See router-id

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