OSPF INTERFACE TABLE - All the router interfaces that have been configured to participate in an OSPF routing process are listed in the OSPF interface table.
OSPF NEIGHBOR TABLE - OSPF neighbors learned via Hello packets are present in an OSPF neighbor table. A neighbor is removed from this table if Hellos have not been heard from the neighbor within the dead time interval. Additionally, a neighbor is removed from this table if the interface associated with the neighbor goes down....
CCNP TSHOOT - Troubleshooting Routing Protocols (Basic Routing, EIGRP) - TERMS [6]
FORWARDING INFORMATION BASE (FIB) - The FIB contains Layer 3 information, similar to the information found in an IP routing table. Additionally, an FIB contains information about multicast routes and directly connected hosts....