My organisation has implemented AppleTV, created a WLAN specifically for it, mDNS snooping, etc. We have enabled the Multicast Vlan Feature so that devices on our internal and guest networks can see AppleTV devices from the AppleTV WLAN. The issue we have is that AppleTV devices randomly drop off the network and do not reappear unless they are restarted. I have checked timeout settings, DHCP lease time, firewall, etc, but had long success. Has anyone has any experience with the bonjour service and mDNS who may be able to point me in a direction to resolve the issue? Our WLC is the 5508 v7.6. Thanks