OSPF Configuration

1. Create the OSPF configuration (applies to every router)

router ospf 1 (1 is the instance number, the same number can be used for all routers)

2. Advertise on Area 0 all of the routers directly connected networks

#(config-router) network network_address wildcard_mask area 0 (Wildcard mask is inverse subnet mask, 255.255.255.0 would be 0.0.0.255)

3. Ensure all routers have had ospf instances created and all networks are being advertised on Area 0, all should work.

I did have an issue where the configuration was right and it did not work until saving, closing, and restarting the program a day later, no additional changes were made.