ICND2: Summary of useful troubleshooting commands

OSPF:

Show ip ospf neighbor
Sh ip ospf interface
sh ip protocols
sh ip route
sh ip ospf database

EIGRP:

sh ip eigrp neighbors
sh ip eigrp interfaces
sh ip route eigrp
sh ip eigrp topology
sh ip eigrp traffic
sh ip protocols.

Frame Relay

sh frame-relay pvc
sh frame-relay map
sh frame lmi
sh frame pvc
sh interface