Modifying a router ID

Because the router ID is defined in the config>router context, not in the OSPF configuration context, the protocol instance is not aware of the change. Re-examine the plan detailing the router ID. Changing the router ID on a device could cause configuration inconsistencies if associated values are not also modified.

After you have changed a router ID, manually shut down and restart the protocol using the shutdown and no shutdown commands in order for the changes to be incorporated.

Use the following syntax to change a router ID number.

config>router# router-id router-id

Example: NSSA router ID modification output

A:ALA-49>config>router# info
------------------------------------------
IP Configuration
------------------------------------------
        interface "system"
            address 10.10.10.104/32
        exit
        interface "to-103"
            address 10.0.0.103/24
            port 1/1/1
        exit
router-id 10.10.10.104
------------------------------------------
A:ALA-49>config>router#