Help understanding failed 4-way handshake

Jouni Malinen j at
Sat Nov 17 10:05:25 EST 2007

On Wed, Nov 14, 2007 at 01:10:47PM -0500, Joshua ChaitinPollak wrote:

> Sometimes when the mobile unit moves out of range of one AP and into
> range of another, the 4-way handshake fails. At this point, I'm just
> trying to understand why. 
> Eventually, after about 30 seconds, and 6 attempts, we get a successful
> association, but I'd like to know why the first 5 attempts fail.

Since the debug log did not show all the attempts, it is difficult to
say what exactly happened, but this looks like some kind of race
condition between associations and EAPOL frames in the 4-way handshake.

Jouni Malinen                                            PGP id EFC895FA

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