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New Member

wlc and radius authenticationn

We have deployed Cisco Airspace AP with Wireless LAN Controllers (4400).

Currently we have the WLC authenticating using radius to ACS version 4.01 servers.

Unfortunately when the primary ACS get rebooted all the athentication requests go to the secondary server which in affect is fine but when the primary comes back up the authenticatons continue to go to the secondary server.

Is there no round-robin feature to enable on the WLC so that it detects that the primary is back up and continue to authenticate to that server ?


Re: wlc and radius authenticationn

I have not seen a way yet except by using a CSS to front-end the ACS servers (mainly done for lad-balancing purposes actually). I am also curious if there is an option as I have been through most web pages many times. Maybe it's buried in the command line.


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New Member

Re: wlc and radius authenticationn

Hi Eric,

CSS ? Not sure what this is ?