The firewall requires a virtual router to obtain routes
to other subnets either using static routes that you manually define,
or through participation in Layer 3 routing protocols (dynamic routes).
Each Layer 3 interface, loopback interface, and VLAN interface defined
on the firewall must be associated with a virtual router. Each interface
can belong to only one virtual router.
Defining a virtual router requires
general settings and any combination of static routes or dynamic
routing protocols, as required by your network. You can also configure
other features such as route redistribution and ECMP.
What are you looking
What are the required elements of a virtual router?