Ospf Why Use Loopback Over Router Id

In OSPF (Open Shortest Path First), the process ID is a unique identifier assigned to an OSPF routing instance on a router. Moreover, It is a tedious process, but you would need to look at the output of a 'show ip ospf database" and "show ip bgp" on each router to see what is different. In related context, The "default-information orginate" command used on a router running ospf allows it advertise the default route to the ospf domain (if a default route exixts on it's routing table). Research indicates, •If OSPF router ID needs to be routable, configure a loopback interface with the same IP address and include it under the OSPF process. These findings regarding Ospf Why Use Loopback Over Router Id provide comprehensive context for understanding this subject.