Connectivity problem after adding a second WLC

Unanswered Question
Mar 19th, 2012

I have a client with two identically configured WLC's running with approximately 370 AP's.  We are currently testing before going into production and found that once the 2nd WLC comes online (same mobility/RF group), the clients are no longer able to connect / obtain an IP address.  We removed all security and still had the same issue when the 2nd controller came online.   This sounds like a bug and I'm thinking about upgrading to 7.2x, however, that requires upgrading the MSE/NCM.  Although I don't mind doing this upgrade, I was just wondering if anyone else has ran into this issue.

I did run both configuration files through the WLC Config Analyzer and nothing seems to jump out other than some typical RF issues.



I have this problem too.
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s.vosper Tue, 03/20/2012 - 03:23


Have you checked to make sure you don't have any IP address duplications between any of the interfaces of the controllers?



bbagheri1 Tue, 03/20/2012 - 10:19


No IP Conflicts. Ironically, when we broke the Mobility Group, everything is working fine and clients are able to obtain their IP addresses from the DHCP servers.


Steve Rodriguez Tue, 03/20/2012 - 11:59

Can you post the configs? Feel free to scrub them so bling as we have the mobility interface and WLAN configs.


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bbagheri1 Tue, 03/20/2012 - 15:18

It appears the MFP on the AP's was off on one controller.

Thanks for trying to help.



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Posted March 19, 2012 at 7:28 AM
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