Multicast routing is a networking method for efficient distribution of one-to-many traffic, and is primarily used for audio and video streams. When you enable multicast routing on your Firebox, the Firebox is the local multicast router that forwards multicast traffic from the source to the devices on your network that receive the traffic.
For more information about multicast routing on your Firebox, go to About Multicast Routing.
On the System Status > Multicast Routes page, you can see information about the multicast routes on your Firebox.
Source
The source IP address of the multicast data.
Group
The multicast group address that receives the data.
Incoming Interface
The network interface that receives the multicast data from the source.
Outgoing Interfaces
The network interfaces that send the multicast data to the multicast group.