Unanswered Question
Nov 27th, 2008
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Sometimes when I connect to 877W router via WiFi Im getting notice (which mentioned on cisco.com site) in logs:

%DOT11-7-CCKM_AUTH_FAILED : Station [enet] CCKM authentication failed

official explanation is: "The station has failed CCKM authentication."

And "Recommended Action" is: "Verify the topology of the APs under the WDS domain."

But 877W does not support WDS commands. And also there no ability to turn CCKM off.

Only one thing helps: reload.

I tried and made some tests with following IOSs:



I was using 3 different PC's (two XP's and one OSX Leopard, all of them were with latest updates/patches)

To confirm highly mentioned problem its enough to switch reauth period to 10 seconds:

dot1x reauth-period 10

And after few minutes we'll get many notices like:

%DOT11-7-CCKM_AUTH_FAILED: Station [enet] authentication failed

And all clients which are trying to reassociate or associate with 877w are unable to connect.

I was surfing through forum and noticed following steps for testing:

- to leave only one SSID

- to turn guest-mode off

- to turn off TKIP and allow only AES.

I tried everything and that was useless.

Maybe someone got any idea how to solve this problem?

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Anatoytyukanov Wed, 12/03/2008 - 04:41
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After some series of tests I discovered following.

Bug exists only in IOS 22.T + AES. If im using TKIP encryption or if I turn encryption off everything works perfectly.

beabrams Wed, 12/03/2008 - 06:44
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  • Cisco Employee,

CSCsv80189, its a bug in the new 22 code... if you back rev it will work fine.....

russlavbank Thu, 12/04/2008 - 04:38
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Yes, 15.T7 work but writes

"*** Not encrypted dot1x packet from [MAC] has been discarded"

while client reauthentication.


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