Reserving internal addresses

Reserve static internal addresses for both FortiGate instances. A static internal IP address is required for the heartbeat interface (port3) and recommended for other NICs.

To reserve internal addresses:

1. In Compute Engine > VM Instances, click the instance name to open the instance details page.
2. Click EDIT.
3. In Network interfaces, open the network interface attributes by clicking the down arrow.
4. Open the Primary internal IP dropdown list and change the value from Ephemeral to STATIC.
5. Provide a name for the interface and click RESERVE.
6. Click DONE and SAVE to save the VM instance changes.
7. Repeat steps 3-6 for all NICs and for the second FortiGate.