New Contributor

Black List Clients



We have two BYOD mobile clients that are automatically blacklisted.

The reason is "User-Defined". This translates to"Manually Blacklisted". We are not manually blacklisting our clients.

<WARN> |AP 2EA-016@ stm| Blacklist add: 04:db:56:1f:01:0d: Reason: user-defined.

We are using version and 7210 controllers.


Any ideas on how to correct this issue.



John B.


Re: Black List Clients

Interesting.  Can you do a show audit-trail and see if someone added them in there manually?

Seth R. Fiermonti
Consulting Systems Engineer - ACCX, ACDX, ACMX
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Super Contributor I

Re: Black List Clients


What does the "show ap blacklist-clients" command say on the controller.  I've seen this differ from what's in the logs.

New Contributor

Re: Black List Clients

I ran the command, show audit-trail and discovered our security NAC was automatically blacklisting the clients. Thank you. for your help.


Guru Elite

Re: Black List Clients

"user-defined" does not always mean a manual blacklist.  Please see the explanations here:

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