CCNP Interview Question:

How is the OSPF router ID determined?

Submitted by: Administrator

If physical interfaces are only used, the OSPF router ID is the highest IP address assigned to an active physical interface. If loopback interfaces are used, the OSPF router ID is the highest IP address assigned to a loopback interface. If the router-id command is used with the OSPF configuration, the address used with this command will be the router ID.
Submitted by: Administrator