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cisco 2960 - dot1x authentication session id not clearing

I am seeing the following behavior when computers move from one switch to another with dot1x ONLY when there is a 'stupid' switch in between.

computer --------  'stupid' switch ------- 2960

dot1x is working fine but when the computer is disconnected, the port still shows the authentication session id so when the computer connects to another port or switch, authentication succeeds but traffic doesn't pass.

While I'm almost certain that the culprit is the 'stupid' switch that doesn't clear the session id, I have already tried another one and the problem remains so I'm actually just asking for a confirmation that all these 'stupid' switches present this behavior and if there is a workaround in this case.

Cheers,

George

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