This section configures the basic settings on the FortiGate units to be OSPF routers. These configurations include multiple interface settings, and hostname.

There are four FortiGate units in this example. The two units in the backbone area can be configured exactly the same except for IP addresses, so only router3 (the DR) configuration will be given with notes indicating router2 (the BDR) IP addresses.

Configuring the FortiGate units includes: