The situation at a customer is as following: They use a Meraki Core: (1)410/16 With a couple of acces layer switches: (6)250/48's   The customer provided us with a couple of vlans (one of these for dante communication) When opening wireshark all traffic is as expected except PTP. there is ptp traffic (Multicast on 239.0.1.217) only on one switch.  In Dante controller we see a different Master per Switch elected.   Other multicast traffic like mDNS does work correct.   We are looking for a solution in this case, Is there a way to turn off igmp per vlan or is there a better solution for this problem.   Kind Regards, ... View more