Guidelines for RIP

IPv6 Guidelines

Does not support IPv6.

Additional Guidelines

The following information applies to RIP Version 2 only:

  • If using neighbor authentication, the authentication key and key ID must be the same on all neighbor devices that provide RIP Version 2 updates to the interface.

  • With RIP Version 2, the Secure Firewall Threat Defense device transmits and receives default route updates using the multicast address 224.0.0.9. In passive mode, it receives route updates at that address.

  • When RIP Version 2 is configured on an interface, the multicast address 224.0.0.9 is registered on that interface. When a RIP Version 2 configuration is removed from an interface, that multicast address is unregistered.

Limitations

  • The Secure Firewall Threat Defense device cannot pass RIP updates between interfaces.

  • RIP Version 1 does not support variable-length subnet masks.

  • RIP has a maximum hop count of 15. A route with a hop count greater than 15 is considered unreachable.

  • RIP convergence is relatively slow compared to other routing protocols.

  • You can only enable a single RIP process on the Secure Firewall Threat Defense device.