Router#clear ip route *
Clears entire routing table, forcing it to rebuild
Router#clear ip route a.b.c.d
Clears specific route to network a.b.c.d
Router#clear ip ospf counters
Resets OSPF counters
Router#clear ip ospf process
Resets entire OSPF process forcing OSPF to re-create neighbors, database, and routing table
Router#debug ip ospf events
Displays all OSPF events
Router#debug ip ospf adj
Displays various OSPF states and DR and BDR election between adjacent routers
Router#debug ip ospf packets
Displays OPSF packets
