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Access network design for branch, remote, outdoor and campus locations with Aruba access points, and mobility controllers.
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Connectivity prolems with error message --- 6105 - deauth after EAPOL key exchange sequence

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  • 1.  Connectivity prolems with error message --- 6105 - deauth after EAPOL key exchange sequence

    Posted 12 days ago

    Hello!

    We are running ArubaOS 8.6.0.0 on our Controllers, and WPA2 Enterprise - PEAP.

    In recent weeks several clients have been having sporadic problems with connecting to the SSID, and succeed after10-15 minutes and several attempts whereby the computer is restarted, or the network card is disabled and enabled.

    The following error messages appear continuously in the Windows EvenvtViewer log.

    • 6105 - deauth after EAPOL key exchange sequence
    • 7021 - Connection telemetry fields and analysis usage

     

    We have noticed that this commonly occurs where we have AP-205 access points.

     

    What could be the cause of this  issue?

     

     

     



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    Kind regards
    PM
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  • 2.  RE: Connectivity prolems with error message --- 6105 - deauth after EAPOL key exchange sequence

    Posted 12 days ago
    Try to upgrade to 8.6.0.9 or 8.6.0.15 (or at least something more recent than a .0.0 version). There were some low-level AP firmware bugs in early 8.6 releases that were fixed in recent versions and may cause unpredictable connectivity like you see.

    As well, upgrading the wireless drivers on your clients may resolve the issue. Especially with 'corporate Windows images' or vendor drivers (like HP, Lenovo, Dell, etc) it may be that you have just a bad driver that causes issues.

    What RADIUS server do you use? You can check on the RADIUS side as well if you see strange things.

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    Herman Robers
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    If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.

    In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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  • 3.  RE: Connectivity prolems with error message --- 6105 - deauth after EAPOL key exchange sequence

    Posted 12 days ago

    Hello Herman,

     

    Thank you very much for your response!

     

    We recently did an upgrade to 8.6.0.15, but had to revert to 8.6.0.0 as our VPN clients then run into problems while connecting through Virtual Intranet Access (VIA). Aruba TAC had a look, and advised to revert (but that is another story, and will post on a new thread).

    We are awaiting for ArubaOS 8.6.0.16 to make a new upgrade attempt.

     

    We are using Windows NPS and nothing shows up in the logs there.

     

    I will check on the drivers of the computers (HP) experiencing this problem.

     

     



    ------------------------------
    Kind regards
    PM
    ------------------------------