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IP Routing Commands
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router ospf
This command enables Open Shortest Path First (OSPF) routing for all IP interfaces
on the router. Use the no form to disable it.
Syntax
[no] router ospf
Command Mode
Global Configuration
Default Setting
Disabled
Command Usage
• OSPF is used to specify how routers exchange routing table information.
• This command is also used to enter router configuration mode.
Example
Related Commands
network area (4-271)
router-id
This command assigns a unique router ID for this device within the autonomous
system. Use the no form to use the default router identification method (i.e., the
lowest interface address).
Syntax
router-id
ip-address
no router-id
ip-address - Router ID formatted as an IP address.
Command Mode
Router Configuration
Default Setting
Lowest interface address
show ip ospf neighbor Displays neighbor information PE 4-293
show ip ospf
summary-address
Displays all summary address redistribution information PE 4-294
show ip ospf virtual-links Displays parameters and the adjacency state of virtual links PE 4-294
Console(config)#router ospf
Console(config-router)#
Table 4-89 Open Shortest Path First Commands (Continued)
Command Function Mode Page