Default IGMP version

IGMP V3 is available for Brocade devices; however, these routers are shipped with IGMP V2-enabled. You must enable IGMP V3 globally or per interface.

Also, you can specify what version of IGMP you want to run on a device globally, on each interface (physical port or virtual routing interface), and on each physical port within a virtual routing interface. If you do not specify an IGMP version, IGMP V2 will be used.