Minimum configuration for dynamic routing
Dynamic routing protocols do not pay attention to routing updates from other sources, unless you specifically configure them to do so using CLI redistribute commands within each routing protocol.
The minimum configuration for any dynamic routing to function is to have dynamic routing configured on one interface on the FortiGate unit, and one other router configured as well. Some protocols require larger networks to function as designed.
Table 8: Minimum configuration based on dynamic protocol
| BGP | RIP | OSPF / IS-IS |
Interface | yes | yes | yes |
Network | yes | yes | yes |
AS | local and neighbor | no | yes |
Neighbors | at least one | at least one | at least one |
Version | no | yes | no |
Router ID | no | no | yes |