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AppleTV is not accessible using AirParrott on SonicWall wireless network.

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.

Thoughts?
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Joshua Grantom
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Any luck?
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Haven't had a change to try it yet.

Why would I need that multicast address policy?

Also this is the integrated wireless that is bridged to the LAN so all traffic is allowed. No port blocking at all.
oh ok, Do wireless clients get the same IP subnet as the DHCP server?
yes they do. And if I wire everything it works. It is only on the wireless that I have the issue.
Go into the Network Zones and edit the WLAN connection and make sure the check box for "Allow Interface Trust" is checked
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Okay here is what I did.

Fortunately, I had an available SonicPoint Ne.

First I disabled the integrated wireless on the SonicWall TZ215

Second, I setup the SonicPoint to be managed by the SonicWall per SonicWall documentation.

On the new Zone / Interface I enabled Multicast support.

I connected the Apple TV and my laptop to the new wireless network and viola it worked!!!!

Thanks for the feed back.
Very Nice!
I gave Josh the most points because he responded the most. Thanks for the detailed reply Peter.