E4200 reboots everytime I use AirPlay between MBP 5GHz mode to Airport Express using 2.4 GHz mode

[wfiveash]

I've just confirmed that everytime I try to stream music from my MacBook Pro (iTunes) that is connected to my WiFi network using the 5GHz mode (channel width is Auto, channel: Auto (DFS)) to a couple Airport Express cubes are connected via the 2.4 GHz WiFi (channel width: Auto, channel: 10) the E4200 router reboots.  When I set the MBP to use the 2.4 GHz mode I can stream music without causing the E4200 to reboot.  The E4200 is running firmware 1.0.03.

[Gollum · Accepted solution]

Login to the router's web interface. Under 'application and gaming tab', click on the sub tab, 'QoS' and disable the option 'WMM support'.

Refer to the screen capture below.

[balcells]

thanks, that solved it for me. was having the exact same problem with a wired airport express (not even using the wireless signal at all). the E4200 would reboot every single time i tried to connect it from iTunes on my macbook pro (iTunes version 10.5). 

it did not happen when connecting from the same verion of itunes on a PC, and it did not happen when connecting to the airport express from airfoil. ONLY from iTunes on my macbook pro. very odd. 

is this a firmware deffect on the E4200 that will be fixed in the future?

thanks a lot 

[wfiveash]

Thanks, your suggestion solved the rebooting problem.  I appreciate your taking the time to post that.

[phibertron]

Be aware that by turning off WMM, There are wifi cards, for ex: intel,

that will not be able to connect at full speed or at all

[wfiveash]

Sounds like a classic lesser of two evils workaround.  Like other posters I hope that Cisco/Linksys fix this issue so that WMM QoS mode works properly.

[wfiveash]

I've just noticed that my iPhone 4 running iOS 5 will not connect to my WiFi network if WMM is off.   8^/  This is now an official rock and a hard place situation for me.

[wfiveash]

Ah, but I just read that iOS 5 devices need WMM on if the WiFI is 802-N only.  If the WiFi is set to mixed mode the iOS 5 will switch to 802-G.  I tried setting the 2.4GHz band to mixed mode, disabled WMM and my iPhone was able to connect to the WiFi.  I'm happier now.

[uxthinker]

Ive been having the SAME problems and am so glad i found this post. What in the world is wrong with these companies treating us like its our fault their product not only doesn't work, but reboots itself with no alert as to why. Come on Cisco, you can do so much better than this. I am switching back to a Time Machine. While its more expensive than getting a nas and a wireless router from some other brand, that extra money is NOTHING compared to all the time and effort I've put into getting this router to work as they said it would. Goodbye Cisco, and good riddance.

[hiptechboy]

Did any of you have this problem with the previous firmwares?