Just got this error message today - Apple Support HAS NO CLUE!
I've been having Apple TVs drop off the network since September, but intermittently. In fact, one day I stood in front of the display and watched the ATV connect, then disconnect, then connect, then disconnect -- well, you get the idea.
There is SOMETHING screwy with the wireless. TAC has NO CLUE. Apple has NO CLUE. My vendor has NO CLUE!
Not sure where to go now. But retirement is looking better and better every day!
Additional Note: 11/20/13
After more thought I've come to the conclusion that Aruba is not very Apple friendly. I should have heeded the suggestion from an Apple Engineer when he mentioned that Apple uses Cisco in their home office. But, of course, hindsight is 20-20.
Had I known I would have needed to be a wireless engineer to run an Aruba network, I can guarantee you things would have been different.
At this point I am on the verge of recommending a rip and replace. While Aruba talks a good game, their implementation is disastrously short. I remember seeing a placard on the wall of my grandmother's office that read, "Talk is cheap because the supply is greater than the demand."
But I guess what really frosts my birthday cake is that vendors, these days, after doing a mediocre job then want you to think they have done an outstanding job.
So...I shrug my shoulders and soldier on...alone...and that, folks, is the rest of the story.