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Ipad 3 Won't Connect Specific Access Points

I've got two Cisco Aironet 1200 Series access points. Both access points have the same SSID and WEP passcode. Both access points are assigned a unique static address and hostname. Both access points are mounted to the ceiling, and get power through POE injectors.

I've also got two Ipad 3's. Both Ipads will connect to access point "A" but only one will connect to access point "B". It seems to be a DHCP problem. All other devices can connect to both access points fine. (Windows, Iphones, Android)

I've tried the following solutions with no fix...

Copied configuration from access point "A" to access point "B" (changing ip and hostname)
Reset network settings on the non-connecting Ipad.
Had the Ipad replaced through support with a brand new one.
Replaced access point "B" with a WAP4410N.
Changed security on the WAP4410N to WPA and WPA2.

What in the world is going on?!? Is there some secret incompatibility between Cisco WAPs and Ipad 3's?
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active_datacomm
Asked:
active_datacomm
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1 Solution
 
gmbaxterCommented:
Have you verified the tkip or aes encryption setting on a and b, eg one might be using tkip, the other aes.
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active_datacommAuthor Commented:
Both original access points are secured using WEP. The replacement WAP for "B" was setup with different SSID, and is currently using WPA Personal AES.
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gmbaxterCommented:
Can you get any kind of syslog off the WAP ?
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Jackie ManCommented:
Have you tried to reset the network setting of the iPad which cannot connect to access point B?

Settings > General > Reset network settings

Source: https://discussions.apple.com/thread/2738932?start=0&tstart=0
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dallensworthCommented:
Check to make sure you've both associated and authenticated through the access point.  If your only associated then you wouldn't be able to access your dhcp server and it would certainly look like a dhcp problem.  

Here are some additional troubleshooting links to try as well.

iOS Troubleshooting Wi-Fi networks and connections  http://support.apple.com/kb/TS1398

iPad: Issues connecting to Wi-Fi networks  http://support.apple.com/kb/ts3304

iOS: Recommended settings for Wi-Fi routers and access points  http://support.apple.com/kb/HT4199

 How to Quickly Fix iPad 3 Wi-Fi Reception Problems http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
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active_datacommAuthor Commented:
Have you tried to reset the network setting of the iPad which cannot connect to access point B?
As stated in my first post, that is one of the solutions I have tried.

Can you get any kind of syslog off the WAP ?
I have attached the log to this post. It notes the problematic Ipad's MAC address in a few entries. (6420.0c17.cda9)

Check to make sure you've both associated and authenticated through the access point.  If your only associated then you wouldn't be able to access your dhcp server and it would certainly look like a dhcp problem.  
I think that is a step in the right direction. I found the Mac address of the Ipad in the list of connected Clients. Its state showed that it was associated. I did see some errors in the attached event log, however, that complain about it losing authentication.

Additional Information....

After giving it enough time, the Ipad does eventually manage to acquire a proper DHCP address, along with gateway, DNS, etc. It still does not want to connect to the internet, however, and I cannot ping the Ipad using other devices on the network.
newlog.txt
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Craig BeckCommented:
Turn off the encryption and see if the iPad can connect.  If this works, try upgrading the IOS on your AP to something more recent if you can and turn the encryption back on.
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dallensworthCommented:
The log shows what would happen if you had interference or went out of range.

If the issue goes away without encryption then upgrade of ipad possible fix or upgrade of the ap's code version.  Do both APs have the same code level?

If it is associating but not authenticating I would expect the psk to be incorrect.

Do the 1200s you have support dual radios?  Do you have both 2.4 and 5 radios on?  If so try shutting off the 5 radio.
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active_datacommAuthor Commented:
They ended up purchasing a different brand access point.
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active_datacommAuthor Commented:
After much troubleshooting we were never able to resolve the issue with that particular brand of access points. We just purchased a different brand.
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