I have server (multicast source) which is connected to a switch port. The switch port is part of VLAN10. Other servers are part of VLAN 10 including a few receivers.
IGMP snooping is configured on the switch. When the Source is on, I see that every port on VLAN10 receive the multicast packet.
I think this behavior is caused by the source sending the traffic.
How to restrict the Multicast source from flooding the VLAN?
Easy solution is to isolate the source on specific VLAN (not possible).