Command
Clear IP OSPF Process
Use
Reloads the ospf process.
Syntax
Router#clear ip ospf process
Example

In this example, the OSPF process is reloaded on R1. Before changing anything, here is the OSPF information on R2.
R2(config-router)#do show ip ospf neighNeighbor ID Pri State Dead Time Address Interface 133.133.133.133 1 FULL/DR 00:00:39 10.2.2.3 FastEthernet1/0 111.111.111.111 1 FULL/DR 00:00:39 10.1.1.1 FastEthernet0/0 |
Next, the router-id for R1 is changed to 1.1.1.1. Notice that a warning to “clear ip ospf process” is displayed.
R1(config-router)#router-id 1.1.1.1 |
After that, the IP OSPF process is reloaded on R1.
R1(config-router)#do clear ip ospf process |
Finally, after reloading the OSPF process on R1, the OSPF information is changed on R2.
R2(config-router)#do show ip ospf neighNeighbor ID Pri State Dead Time Address Interface 133.133.133.133 1 FULL/DR 00:00:39 10.2.2.3 FastEthernet1/0 1.1.1.1 1 FULL/BDR 00:00:39 10.1.1.1 FastEthernet0/0 |