topic troubleshooting 802.1x failures in Network Access Control

troubleshooting 802.1x failures

andrewsigna — Mon, 11 Mar 2019 06:28:44 GMT

Hi!

When your authentications failover from 802.1x to MAB without an apparent reason what do you usually do to troubleshoot the process?

Thanks!

uefis.cdi — Thu, 11 Feb 2016 08:28:25 GMT

I usually go to the authentication server and check logs. Debugs on the switch also can help.

Javier Henderson — Thu, 11 Feb 2016 12:17:47 GMT

You could enable the following debugs:

debug aaa authentication

debug dot1x all

debug radius

Note that the output will be very verbose, so be careful on a busy production switch, and direct debug output to a buffer rather than the console.

Javier Henderson

Cisco Systems

nspasov — Thu, 11 Feb 2016 13:12:38 GMT

What are the devices and their OS that are having this issue? It will also be helpful to post some screenshots of their supplicant configuration.

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