mobile-unit initiated disassociation (reason code 8)

I have a Motorola RFS4000 controller.  I have wifi client randomly dropping off the WLAN and then automatically reconnecting.  I've enabled a syslog server and got the error when the WiFi client drops.

mobile-unit initiated disassociation (reason code 8)
Oct 24 12:10:09 RFS4000 %CC-6-STATIONUNASSOC: Station B8-8D-12-09-AB-04 un-associated from radio 3 wlan 2 : starting tkip countermeasures (reason code 14)
gopher_49Asked:
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Craig BeckCommented:
Is your WLAN using WPA2?  If so the client doesn't like using WPA2 with TKIP.

WPA2 was designed to use AES.  Some clients want to use TKIP only with WPA1.
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gopher_49Author Commented:
I think my controller is set for TKIP or AES.  I guess it does via auto mode.  I'll see about statically assigning AES and will update this ticket.
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gopher_49Author Commented:
I only see WPA-WPA2/TKIP.  This is no AES option.
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Craig BeckCommented:
AES must be available as you have the ability to use 802.11n.  AES is a requirement when 802.11n is used, unless you use no authentication.

The spec sheet suggests that the following modes are available:

WEP 40/128 (RC4), KeyGuard, WPA—TKIP, WPA2-CCMP (AES), WPA2-TKIP

Can you post a screenshot of the page where you see the TKIP options please?
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gopher_49Author Commented:
Attached are the requested screenshots.
rfs4000-screenshot1.jpg
rfs4000-screenshot2.jpg
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Craig BeckCommented:
Set the encryption to WPA2-CCMP
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gopher_49Author Commented:
okay.  When users leave for the day I'll change it to that encryption.  I'll update the ticket late afternoon.

Thanks.
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gopher_49Author Commented:
I haven't made the suggested changes.  I'll try tomorrow.
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gopher_49Author Commented:
This worked
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