Command
Network
Use
Specifies which interfaces will participate in the OSPF process.
Syntax
Router(config-router)#network <network address> <wildcard mask> area <area>
Options
| <network address> | Any interface with this network address will be added into OSPF. |
| <wildcard masks> | Sets how specific the network statement is: 192.168.1.0 0.0.0.255 would match any address starting with 192.168.1. |
Example
In this example, we will configure OSPF on all routers in the topology.
R2(config)#router ospf 1 R2(config-router)#network 0.0.0.0 255.255.255.255 area 0 *Mar 1 01:13:48.083: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.1 on FastEthernet0/0 from LOADING to FULL, Loading Done *Mar 1 01:13:48.083: %OSPF-5-ADJCHG: Process 1, Nbr 3.3.3.3 on FastEthernet0/0 from LOADING to FULL, Loading Done
Notice that EIGRP also stripes the network statements back to its classful network boundary.
R2(config-router)#do show ip route ospf 1.0.0.0/32 is subnetted, 3 subnets O 1.1.1.1 [110/2] via 10.1.1.1, 00:04:16, FastEthernet0/0 O 1.3.3.3 [110/2] via 10.1.1.1, 00:04:16, FastEthernet0/0 O 1.2.2.2 [110/2] via 10.1.1.1, 00:04:16, FastEthernet0/0 192.168.13.0/30 is subnetted, 1 subnets O 192.168.13.0 [110/65] via 10.2.2.3, 00:04:16, FastEthernet1/0 [110/65] via 10.1.1.1, 00:04:16, FastEthernet0/0 33.0.0.0/32 is subnetted, 1 subnets O 33.33.33.33 [110/2] via 10.2.2.3, 00:04:16, FastEthernet1/0 3.0.0.0/32 is subnetted, 1 subnets O 3.3.3.3 [110/2] via 10.2.2.3, 00:04:16, FastEthernet1/0 111.0.0.0/32 is subnetted, 1 subnets O 111.111.111.111 [110/2] via 10.1.1.1, 00:04:16, FastEthernet0/0 10.0.0.0/24 is subnetted, 3 subnets O 10.4.4.0 [110/65] via 10.2.2.3, 00:04:16, FastEthernet1/0 [110/65] via 10.1.1.1, 00:04:16, FastEthernet0/0 11.0.0.0/32 is subnetted, 1 subnets O 11.11.11.11 [110/2] via 10.1.1.1, 00:04:16, FastEthernet0/0 133.133.0.0/32 is subnetted, 1 subnets O 133.133.133.133 [110/2] via 10.2.2.3, 00:04:16, FastEthernet1/0