I have a client who purchased an Apple TV for their conference room. They want to be able to mirror their display from their laptop to the TV during meetings. The network wireless is run from a SonicWall TZ215W. The wireless is bridged to the LAN.
When we connect the Apple TV and Laptop via LAN Ethernet AirParrott works great. but when we try and do the same using the wireless on both devices AirParrott cannot mirror to the Apple TV. If I turn off the SoncWall wireless and use a consumer store bough access point it works. So something in the SoncWall is not allowing communication and it is specific to the wireless.
I have turned on multicast and enabled IPHelper with mDNS.