>When I disable IGMP snooping and ENABLE flood the paging works but the video stops working.   To me, this suggests a defect in the paging phone multicast software.  The software should be sending an IGMP join - and this suggests it is not.   Also check out this excellent post about configuring multicast: https://community.meraki.com/t5/Switching/Multicast-Basic-s/m-p/25867/highlight/true#M2125  ... View more