Configure Static and Default Routes for FDM-Managed Devices
Define static routes on an FDM-managed device so it knows where to send packets bound for networks not directly connected to the interfaces on the system.
Consider creating a default route. This is the route for network 0.0.0.0/0. This route defines where to send packets whose egress interface cannot be determined by existing NAT translations, static NAT rules, or other static routes.
You might need other static routes if the default gateway cannot be used to get to all networks. For example, the default route is usually an upstream router on the outside interface. If there are additional inside networks that are not directly connected to the device, and they cannot be accessed through the default gateway, you need static routes for each of those inside networks.
You cannot define static routes for the networks that are directly connected to system interfaces. The system automatically creates these routes.