Cisco WLC 2500 - Cisco Air CAP1602I-A-K9

We have a Cisco WLC 2504 running firmware.

We have one site with a Cisco Air CAP1602I-A-K9 that will connect clients for about 30 seconds then drop them.  They will show as connected in the WLC, but cannot get out and on the laptop it shows the connection as dropped.  There are no errors to go on for research into this issue.

We have replaced the WAP, added a power brick, moved it to a different switch, and everything else physical like switching out patch cables.  Nothing has resolved it.

Does anyone have any suggestions?
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considerscsAuthor Commented:
I should also add that the clients connect right back after about 20 seconds and the just do this same routine over and over.
How are the users authenticating? Is this issue SSID wide (regardless of AP), or is it limited to users associating on the 1602 ap. If you configure a different SSID on that ap, say an unsecure temp SSID, can you get connected?
considerscsAuthor Commented:
They are authenticating through WPA/WPA2 TKIP/AES with a PSK.

I have a free wifi going through that same ap and no problems on it.  It does not drop.

Its just clients on the production SSID on this one AP.
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Craig BeckCommented:
I'd get off 7.4 code if you can - it's very buggy.

Also, if you're using WPA -and- WPA2, try not to use AES with WPA or TKIP with WPA2.  You should only use TKIP with WPA, and AES with WPA2.

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considerscsAuthor Commented:
what code version are you running?  We do have the newer 1601 AP's that have to have the newer code to work.

Which one is recommended right now with the least bugs?
Craig BeckCommented:
Yes the 1600s need 7.4 as a minimum which puts you in a tight spot.  There is a maintenance revision of 7.4 code which might fix some of your issues but you can't download that from the Cisco website - you need to obtain it via TAC.

I would install if you can.  That version seems to be a lot more stable than 7.4 from what I've seen.
considerscsAuthor Commented:
Thanks for that I am going to try that shortly and also make the Enryption changes for WPA/WPA2 also.
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