IGMP is a communications protocol used by devices and routers on IPv4 networks to establish multicast group memberships. IGMP is an integral part of IP multicast (required for sACN) and allows the network to direct multicast transmissions to the device hosts that have requested them only.
The IGMP communication protocol is backwards compatible.
The versions of IGMP used by ENTTEC network devices are as follows:
- IGMPv3: S-Play / Datagate Mk2 RevC / Pixelator RevC / Storm24 RevC
- IGMPv2: ODE Mk2 / Storm8 / Pixelator Mini / Octo / Ethergate Mk3