Cannot AirPlay over ethernet

[CHRONiC YOUTH]

My iPhone 4s,iPad 2 and windows 7 laptop are all not able push AirPlay content over my wired ethernet connection but soon as I disconnect my cable and it switches to wifi the airplay icons shows right up, the funny thing is I've airplayed with it before over Ethernet but since getting back from vacation I'm am not able to now.. Ive tried restoring my atv 2 in iTunes, resetting my router/modem and manually setting up network on my atv2 and nothing has worked.. Has anyone else ever experienced this issues?

 

[BUFFBOY]

i have the same issue

 

[CHRONiC YOUTH]

I dug around a little bit more, and tried one suggestion that I had found, which was to change the channel width from 20mhz to 40mhz in my cisco routers settings and that seems to have fixed the problem, I still have no idea why it was initially not allowing me to mirror in the first place though since it had worked previously