CB21AG card with ADU 3.0 and 802.11i Key Caching

[pblume]

Does the CB21AG card with 3.0 software support PMKID caching. Specifically, when roaming to a new AP, will the CB21AG send out the PMKID in the reassociation frame or does it send nothing since it never associated to the AP before? In previous testing, I definitely saw the CB21AG card send out its last known PMKID to the new AP. I now can't get that to work. I think I was using software version 2.6 before.

Any insight?

[thomas.chen]

Yes the PMKID is supported on CB21. AP's will cache all the PMKs negotiated between AP and clients, so when the AP

sees new association request from the client it searches its own list of the cached PMKIDs of the previously associated clients; if the PMKID is there then AP will directly to 4-way key-exchange, bypassing the authentication process. If you see AP

marks the client as "WPAv2-CP", then cached PMK is used, otherwise, it is using newly negotiated PMK instead.