Did you get anywhere with this? I am having a similar issue, but its with POE clocks. They work perfectly when plugged into Cisco IOS switches. But on meraki they will just stop communicating on the network, they will be powered on but will no longer get ntp time updates from the local PDC, or an internet source. When in this state they do not respond to ping, and only recover after cycling POE on the port. I have tried static IP's on the clocks, a dedicated vlan, and the drops still occur. It is driving me insane.  ... View more