Summary Table: Chapter 9 Command Review

Command	Description
area area-id authentication[message-digest]	Enables type 1 or type 2 authentication for an area.
area area-id default-cost cost	Specifies a cost for the default route sent into a stub area by an ABR.
area area-id nssa [ no-redistribution ][ default-information-originate ][ no-summary ]	Configures an area as not-so-stubby (NSSA).
area area-id range address mask	Summarizes addresses into or out of an area.
area area-id stub [ no-summary ]	Configures an area as a stub or totally stubby area.
area area-id virtual-link router-id	Defines a virtual link between ABRs.
debug ip ospf adj	Shows the events involved in the building or breaking of an OSPF adjacency .
ip ospf authentication-key password	Assigns a password to an OSPF interface for use with type 1 authentication.
ip ospf cost cost	Specifies the outgoing cost of an OSPF interface.
ip ospf dead-interval seconds	Specifies the OSPF RouterDeadInterval for an interface.
ip ospf demand-circuit	Configures an interface as an OSPF demand circuit.
ip ospf hello-interval seconds	Specifies the OSPF HelloInterval for an interface.
ip ospf message-digest-key key-id md5 key	Specifies an interface's key ID and key (password) for use with type 2 authentication.
ip ospf name -lookup	Enables the reverse DNS lookup of names to match Router IDs in certain show commands.
ip ospf network [broadcast] [nonbroadcast][point-to-multipoint]	Configures the OSPF network type.
ip ospf priority number	Sets the router priority of an interface for use in the DR/BDR election process.
ip ospf retransmit-interval seconds	Sets an interface's OSPF RxmtInterval.
ip ospf transmit-delay seconds	Sets an interface's OSPF InfTransDelay.
maximum-paths	Sets the number of paths over which OSPF performs load balancing.
neighbor ip-address [ priority number ][ poll-interval seconds ] [ cost cost ]	Manually informs a router of its neighbors on a non-broadcast network.
network address inverse-mask area area-id	Specifies the interfaces on which OSPF is to run and specifies the area to which the interface is connected.
ospf auto-cost reference-bandwidth reference-bandwidth	Changes the default OSPF reference bandwidth used for the calculation of link costs.
ospf log-adjacency-changes	Logs neighbor state changes.
router ospf process-id	Enables an OSPF routing process.
show ip ospf [ process-id ]	Displays general information about an OSPF routing process.
show ip ospf border-routers	Displays a router's internal OSPF route table.
show ip ospf [ process-id area-id ] database	Displays all entries in the OSPF link state database.
show ip ospf [ process-id area-id ] database router [ link state-id ]	Displays type 1 LSAs in the OSPF link state database.
show ip ospf [ process-id area-id ] database network [ link state-id ]	Displays type 2 LSAs in the OSPF link state database.
show ip ospf [ process-id area-id ] database summary [ link state-id ]	Displays type 3 LSAs in the OSPF link state database.
show ip ospf [ process-id area-id ] database asbr-summary [ link state-id ]	Displays type 4 LSAs in the OSPF link state database.
show ip ospf [ process-id area-id ] database nssa-external [ link state-id ]	Displays type 7 LSAs in the OSPF link state database.
show ip ospf [ process-id ] database external [ link state-id ]	Displays type 5 LSAs in the OSPF link state database.
show ip ospf [ process-id area-id ] database database-summary	Displays the number of LSAs in the OSPF link state database by type and by area ID.
show ip ospf interface [ type number ]	Displays OSPF-specific information about an interface.
show ip ospf neighbor [ type number ][ neighbor-id ] [ detail ]	Displays information from the OSPF neighbor table.
show ip ospf virtual-links	Displays information about OSPF virtual links.
timer lsa- group -pacing pacing-time	Sets the minimum pacing time between two groups of LSAs whose refresh timers have expired .