topic Re: Can't do preauth in Wireless

Can't do preauth

Moudar — Tue, 23 Jan 2024 13:32:24 GMT

On my 5520 WLC running 8.10.190.0, I am seeing this log so much with so many different clients, here is an example:

*apfMsConnTask_6: Jan 23 14:21:03.780: %APF-3-PREAUTH_FAILURE: [SA]apf_80211.c:15788 There is no PMK cache entry for client50:28:4a:ce:84:16. Can't do preauth

Do I have a problem with Roaming? This log is coming all the time !

I don't have complains but wonder why is this happening?!

Re: Can't do preauth

MHM Cisco World — Tue, 23 Jan 2024 13:36:26 GMT

PMK is one of key in 4 handshake between AP and wifi client'

So sure there is AP or client dont support this 4 handshake.

Can I see l2 secuirty of wlan

MHM

Re: Can't do preauth

Moudar — Tue, 23 Jan 2024 13:56:07 GMT

So, what does mean if about 90% of logs on the WLC are about the same thing, but about different users!

Do I need to fix something?