Reference Guide

Usage Information Congure an arbitrary value in the IP address format for each router. Each router ID must be unique. Use the xed
router ID for the active OSPF router process. Changing the router ID brings down the existing OSPF adjacency.
The new router ID becomes eective immediately. The no version of this command disables the router ID
conguration.
Example
OS10(config)# router ospf 10
OS10(conf-router-ospf-10)# router-id 10.10.1.5
Supported Releases 10.2.0E or later
router ospf
Enters Router OSPF mode and congures an OSPF instance.
Syntax
router ospf instance-number
Parameters instance-number—Enter a router OSPF instance number, from 1 to 65535.
Default Not congured
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
Layer 3 423