Verify the OSPF Protocol and Neighbors

This chapter describes how to check whether the Open Shortest Path First protocol (OSPF) is configured correctly on a Juniper Networks router, the proper adjacencies are formed in a network, and the appropriate link-state advertisements (LSAs) are flooded throughout different parts of the OSPF autonomous system (AS). (See Table 32.)

Table 32: Checklist for Verifying the OSPF Protocol and Neighbors

Verify the OSPF Protocol and Neighbors Tasks	Command or Action
Verify the OSPF Protocol
Check OSPF on an ASBR	show configuration show ospf interface
Check OSPF on an ABR	show configuration show ospf interface
Check OSPF on a Stub Router	show configuration show ospf interface
Check OSPF Neighbors
Verify OSPF Neighbors	show ospf neighbor
Examine the OSPF Link-State Database	show ospf database
Examine OSPF Routes	show route destination-prefix show ospf database
Examine the Forwarding Table	show route destination-prefix extensive show route forwarding-table destination destination-prefix
Examine Link-State Advertisements in Detail
Examine a Type 1 Router LSA	show ospf database router extensive
Examine a Type 3 Summary LSA	show ospf database netsummary extensive
Examine a Type 4 ASBR Summary LSA	show ospf database asbrsummary extensive
Examine a Type 5 AS External LSA	show ospf database extern extensive
Examine Type 7 NSSA External LSA	show ospf database nssa extensive