03-02-2016 09:28 AM
Just noticed that our syslog server is filling up with
Mar 2 17:19:06 2016 Arubal3.york.ac.uk mdns: <137004> <WARN> <Arubal3.york.ac.uk 188.8.131.52> RADIUS server clearpass3--184.108.40.206-1812 timeout
Error messages. Tracked down the Server group associated with this and I'm seeing an error for every radius server entry in the group. On our clearpass cluster I can see error messages indicating that there is a shared key missmatch. Thing is that if I take one of my other radius servers that is actually do authentication, so I know the ip address/key is correct and add it to this server group, I get the same error message for it. If I remove an entry for a server from the group error messages go away for that server.
Other question is why is it the mdns process? Not Airgroups is disabled on the mobility controllers.
03-04-2016 12:27 PM
That message means that the server is not answering for some reason. You need to track that down by doing a test authentication using the Diagnostics tab on the controller.
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03-07-2016 01:32 AM
Well, sorted it out by deleting the RADIUS serves 1 by one from the server group and then macically the errors went away. Reinstated the servers 1 by 1 checking the logs and the messages didn't come back.