Configuring FortiGate multicast forwarding
You configure FortiGate multicast forwarding in the CLI. Two steps are required:
- Add multicast security policies
-
Enable multicast forwarding
This second step is required only if a FortiGate is operating in NAT mode. If the FortiGate is operating in transparent mode, adding a multicast policy enables multicast forwarding.
There is sometimes confusion between the terms “forwarding” and “routing”. These two functions shouldn't be taking place at the same time. It's mentioned that multicast-forward should be enabled when the FortiGate is in NAT mode and that this will forward any multicast packet to all interfaces. However, this parameter shouldn't be enabled when the FortiGate operates as a multicast router (for example, with a routing protocol enabled. It should only be enabled when there's no routing protocols activated.