When you enable RIP, the dynamic routing policy called DR-RIP-Allow is automatically created. You can edit this policy to add authentication and restrict the policy to listen on only the correct interfaces. The DR-RIP-Allow policy is configured to allow RIP multicasts to the reserved multicast address for RIP v2.
If you use RIP v1, you must configure the RIP policy to allow RIP broadcasts from the network broadcast IP address to the XTM device. For example, if your external interface IP address is 203.0.113.2/24, the RIP policy must allow traffic from the broadcast address 203.0.113.255 to the XTM device.
After you configure the XTM device and the RIP router, select System Status > Routes and verify that the XTM device has received route updates from the RIP router.
About Routing Information Protocol (RIP and RIPng)
Sample RIP Routing Configuration File