You are an operator for a network running IS-IS. Two routers are failing to form an adjacency.
What are two reasons for this problem? (Choose two.)
You are an operator for a network running IS-IS. Two routers are failing to form an adjacency.
What are two reasons for this problem? (Choose two.)
Two possible reasons for IS-IS adjacency failure are the lack of a configured ISO address on any IS-IS interface and the missing family iso configuration from the adjacency interface. IS-IS requires each interface participating in the protocol to have an ISO network entity identifier (NEI) which uniquely identifies the router. Furthermore, the family iso configuration is necessary for IS-IS to operate on the interface, as it enables the protocol to be recognized and utilized.
B,D are correct