System Settings : General settings : Network : Configuring static routes
 
Configuring static routes
Go to System Settings > General > Network and select the Routing Table button to view, edit, or add to the static routing table. You may need to add entries to the routing table so that the FortiManager unit can reach FortiGate units on remote networks.
Figure 52: Routing Table
Delete
Select the check box next to the route number and select Delete to remove the route from the table.
Create New
Select Create New to add a new route. See “Add a static route”.
Select the route number to edit the settings.
ID
The route number.
IP/Netmask
The destination IP address and netmask for this route.
Gateway
The IP address of the next hop router to which this route directs traffic.
Interface
The network interface that connects to the gateway.
Add a static route
Go to System Settings > General > Network, select the Routing Table button, and select Create New to add a route, or select the route number to edit an existing route.
Figure 53: Create New route
Destination IP/Mask
Enter the destination IP address and netmask for this route.
Gateway
Enter the IP address of the next hop router to which this route directs traffic.
Interface
Select the network interface that connects to the gateway.