Reference Guide

• View summary information for the OSPF database in EXEC mode.
show ip ospf database
• View the conguration of OSPF neighbors connected to the local router in EXEC mode.
show ip ospf neighbor
• View routes that OSPF calculates in EXEC mode.
show ip ospf routes prefix
View OSPF conguration
OS10# show running-configuration ospf
!
interface ethernet1/1/1
ip ospf 100 area 0.0.0.0
!
router ospf 100
log-adjacency-changes
OSPFv2 commands
area default-cost
Sets the metric for the summary default route generated by the ABR and sends it to the stub area. Use the area default-cost
command on the border routers at the edge of a stub area.
Syntax
area area-id default-cost cost
Parameters
• area-id — Enter the OSPF area in dotted decimal format (A.B.C.D.) or enter a number (0 to 65535).
• cost — Enter a cost for the stub area’s advertised external route metric (0 to 65535).
Default Cost is 1
Command Mode ROUTER-OSPF
Usage Information The cost is also referred as reference-bandwidth or bandwidth. The no version of this command resets the value
to the default.
Example
OS10(conf-router-ospf-10)# area 10.10.1.5 default-cost 10
Supported Releases 10.2.0E or later
area nssa
Denes an area as a NSSA.
Syntax
area area-id nssa [default-information-originate | no-redistribution | no-
summary]
Parameters
• area-id — Enter the OSPF area ID as an IP address (A.B.C.D) or number (1 to 65535).
• no-redistribution — (Optional) Prevents the redistribute command from distributing routes into
the NSSA. Use
no-redistribution command only in an NSSA ABR.
• no-summary — (Optional) Ensures that no summary LSAs are sent into the NSSA.
Default Not congured
Command Mode ROUTER-OSPF
300 Layer 3