Command
IP OSPF #
Use
Enables OSPF on an interface.
Syntax
Router(config-if)#ip ospf <Number>
Example
In this example, OSPF is enabled on int fa0/0 on R1. Before doing so, ospf is disabled at the router level on R1. The empty route table
is first displayed.
R1(config)#no router ospf 1 R1(config)#do show ip route ospf R1(config)#
After that, ospf is then enabled directly on fa0/0.
R1(config)#int fa0/0 R1(config-if)#ip ospf 1 area 0
Finally, the route table is displayed.
R1(config-if)#do show ip route ospf 2.0.0.0/32 is subnetted, 1 subnets O 2.2.2.2 [110/2] via 10.1.1.2, 00:00:13, FastEthernet0/0 33.0.0.0/32 is subnetted, 1 subnets O 33.33.33.33 [110/3] via 10.1.1.2, 00:00:13, FastEthernet0/0 3.0.0.0/32 is subnetted, 1 subnets O 3.3.3.3 [110/3] via 10.1.1.2, 00:00:13, FastEthernet0/0 10.0.0.0/24 is subnetted, 3 subnets O 10.2.2.0 [110/2] via 10.1.1.2, 00:00:13, FastEthernet0/0 133.133.0.0/32 is subnetted, 1 subnets O 133.133.133.133 [110/3] via 10.1.1.2, 00:00:13, FastEthernet0/0