Reference Guide

Command Mode CONFIGURATION
Usage Information Assign an IP address to an interface before using this command. The no version of this command deletes an OSPF
instance.
Example
OS10(config)# router ospf 10
Supported Releases 10.2.0E or later
show ip ospf
Displays OSPF instance conguration information.
Syntax
show ip ospf [instance-number]
Parameters instance-number — View OSPF information for a specied instance number (1 to 65535)
Default Not congured
Command Mode EXEC
Usage Information None
Example
OS10# show ip ospf 10
Routing Process ospf 10 with ID 111.2.1.1
Supports only single TOS (TOS0) routes
It is an Autonomous System Boundary Router
It is Flooding according to RFC 2328
Convergence Level 0
Min LSA origination 0 msec, Min LSA arrival 1000 msec
Min LSA hold time 5000 msec, Max LSA wait time 5000 msec
Number of area in this router is 1, normal 1 stub 0 nssa 0
Area (0.0.0.0)
Number of interface in this area is 3
SPF algorithm executed 38 times
Area ranges are
Supported Releases 10.2.0E or later
show ip ospf asbr
Displays all the ASBR visible to OSPF.
Syntax
show ip ospf [process-id] asbr
Parameters process-id—(Optional) Displays information based on the process ID.
Default Not congured
Command Mode EXEC
Usage Information You can isolate problems with external routes. External OSPF routes are calculated by adding the LSA cost to the
cost of reaching the ASBR router. If an external route does not have the correct cost, this command determines if
the path to the originating router is correct. ASBRs that are not in directly connected areas display. You can
determine if an ASBR is in a directly connected area or not by the ags. For ASBRs in a directly connected area, E
ags are set.
Example
OS10# show ip ospf 10 asbr
RouterID Flags Cost Nexthop Interface Area
112.2.1.1 E/-/-/ 1 110.1.1.2 vlan3050 0.0.0.0
111.2.1.1 E/-/-/ 0 0.0.0.0 - -
360 Layer 3