Airport Extreme - Only the 802.11n only (5 ghz) works

Airport Extreme - Only the 802.11n only (5 ghz) works
Posted: Sep 21, 2008 2:50 AM Reply Email
I just bought an new Airport extreme Base station, and i am not very good with network settings. I am experience an weird problem.
I follow the instruction to set up the Airport extreme. I get the green light on the extreme, everything went well up to that point. but then when i try to connect to the internet wirlessly, it won't let me.
The weird thing is... the computers that were connecting wirely to the Airport extreme using ethernet works fine. but my macbook pro and along with other labtops are not being able to connect to the internet. On my macbook pro, it first says connection failed after i put in my password. but after couple try on entering the password( i thought i typed it in wrong), it finally connected to the network but still no internet. then I went to the network preference panel to check, it says i am connected but with a self-assigned IP and may not be able to connect to the internet.
The even worse thing is... if i change my airport extreme to only broadcast the 802.11n only (5 GHZ) mode, everything works fine. But of course I have some device in the house are not N compatible, which makes this "solution" pretty useless. I understand n is faster and all, but I still want my G compatible device to work with my network.
It will be really nice if anyone can give me a solution and help me get the 802.11n (a/b/g compatible) works.
Thank you.

I am having the exact same issue with my Macbooks. I have 2 Macbooks and they've all stopped connecting to the Airport Extreme router via wireless N. Yeah, I can switch to 5ghz mode, but then my PC laptop, iPod Touch, wireless printer, Xbox 360 wifi adapter and Nintendo Wii all can't connect as they all use wireless a/b/g.
BRUTAL. When are we going to get a fix for this? How do I roll back to a previous rev of OSX, if that's the issue (it must be, as this recently stopped working - i.e. when I installed the latest OS update - when it has worked fine for months).
Message was edited by: Adrian Crook

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http://img266.imageshack.us/img266/6168/airportwifi1dm6.png
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thank you very much for your time.
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I do have an AX that extends the AE network. There is nowhere on AX that I can specify radio mode, once I specified it to extend a network. I assume AX talks to AE over the n network and then extends the network to be g compatible? Sounds really strange.
Maybe not too strange. Since the AX is a single-band device, it can only extend the AEBSn's 2.4 or 5 GH radio, at a time, not both simultaneously. Since your iPhone was able to connect, most likely, it was extending the 2.4 GHz radio ... which was also configured to support "g" devices. What I haven't figured out is how, if you set the AEBSn's Radio Mode to "n only" why non-"n" are still able to connect when the network is extended.
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