Reference Guide

Internet Group Management Protocol | 409
Designating a Multicast Router Interface
You can designate an interface as a multicast router interface with the command ip igmp snooping
mrouter interface
. FTOS also has the capability of listening in on the incoming IGMP General Queries
and designate those interfaces as the multicast router interface when the frames have a non-zero IP source
address. All IGMP control packets and IP multicast data traffic originating from receivers is forwarded to
multicast router interfaces.