Command	Description
display ospf peer	Displays the information about OSPF neighbors.
display ospf error	Displays the information about OSPF errors.
display ospf interface	Displays the information about OSPF interfaces.
display ospf brief	Displays OSPF brief information.
display ospf cumulative	Displays OSPF statistics.
display ospf lsdb	Displays the information about the link state database (LSDB).
display ospf routing	Displays the information about OSPF routing.
display ospf error packet	Displays information about OSPF error packets.
debugging ospf packet	Enables OSPF packet debugging.
debugging ospf event	Enables OSPF event debugging.

Its useful.