Assign Loopback IP Address
After logging in to CTC, configure loopback interface. The loopback interface is a software-based logical interface, and is not associated with any physical interface, and are always in the up state. The packets routed to the loopback interface are rerouted back to the system and processed locally. The router ID must be same as the loopback address of the node.
Before you begin
Login to Cisco Transport Controller (CTC).
In node view, clicktab.
In Interface ID field, set the loopback interface ID.
In IP Address field, enter the IP address for the loopback interface.
In NetMask field, enter the subnet mask for the loopback interface.
What to do next
Configure Open Shortest Path First (OSPF) instance to establish a network topology.