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Wired MAC Authentication for some devices not working

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  • 1.  Wired MAC Authentication for some devices not working

    Posted Mar 26, 2018 04:20 AM

    Hello,

     

    we have a network with about 200 2920-48 PoE switches running well. We have enabled MAC-Authentication against Windows NPS. This is working for the most of our devices.

    But some of them are unable to authenticate. The Problem is, i cant see anything in the Aruba LOGs. No request is reaching the NPS. No MAC-Address is shown on the Switchport. If i disable MAC-Auth the device gets active.

     

    The config looks like:

    interface 1/xx
    untagged vlan 11xx
    aaa port-access mac-based
    aaa port-access mac-based unauth-vid 1
    loop-protect
    exit

     

    As i said, most of our devices (where we use MAC-Based authentication) are working well. They get authenticated by the NPS.

     

    Any ideas ?

    Thanks,

    Ralph