title: Does AWS support multicast and IGMP snooping?
body: <p>In order to make optimal use of network bandwidth in a communication 1->n I need to use multicast. In an on-premise datacenter with switch having IGMP snooping, the advantage of multicast is obvious. However, in IaaS like AWS this is not obvious as we are abstracted from the HW infrastructure. The problem comes when you need to transmit around 400 Mbps to more than one EC2 instances that may be hosted in any physical server. So this why I'm asking whether AWS supports multicast and IGMP snooping.</p>