topic Connectivity problem after adding a second WLC in Wireless https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926895#M45538 <P>I have a client with two identically configured WLC's running 7.0.230.0 with approximately 370 AP's.&nbsp; 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.&nbsp; We removed all security and still had the same issue when the 2nd controller came online.&nbsp;&nbsp; This sounds like a bug and I'm thinking about upgrading to 7.2x, however, that requires upgrading the MSE/NCM.&nbsp; Although I don't mind doing this upgrade, I was just wondering if anyone else has ran into this issue.</P><P></P><P>I did run both configuration files through the WLC Config Analyzer and nothing seems to jump out other than some typical RF issues.</P><P></P><P>Thanks,</P><P>Bob</P> Sun, 04 Jul 2021 04:49:05 GMT Bob Bagheri 2021-07-04T04:49:05Z Connectivity problem after adding a second WLC https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926895#M45538 <P>I have a client with two identically configured WLC's running 7.0.230.0 with approximately 370 AP's.&nbsp; 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.&nbsp; We removed all security and still had the same issue when the 2nd controller came online.&nbsp;&nbsp; This sounds like a bug and I'm thinking about upgrading to 7.2x, however, that requires upgrading the MSE/NCM.&nbsp; Although I don't mind doing this upgrade, I was just wondering if anyone else has ran into this issue.</P><P></P><P>I did run both configuration files through the WLC Config Analyzer and nothing seems to jump out other than some typical RF issues.</P><P></P><P>Thanks,</P><P>Bob</P> Sun, 04 Jul 2021 04:49:05 GMT https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926895#M45538 Bob Bagheri 2021-07-04T04:49:05Z Connectivity problem after adding a second WLC https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926896#M45539 <HTML><HEAD></HEAD><BODY><P>Bob</P><P></P><P>Have you checked to make sure you don't have any IP address duplications between any of the interfaces of the controllers?</P><P></P><P>Regards</P><P></P><P>Simon</P></BODY></HTML> Tue, 20 Mar 2012 10:23:55 GMT https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926896#M45539 s.vosper 2012-03-20T10:23:55Z Connectivity problem after adding a second WLC https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926897#M45540 <HTML><HEAD></HEAD><BODY><P>Simon,</P><P></P><P>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.</P><P></P><P>Re,<BR />Bob</P></BODY></HTML> Tue, 20 Mar 2012 17:19:48 GMT https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926897#M45540 Bob Bagheri 2012-03-20T17:19:48Z Re: Connectivity problem after adding a second WLC https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926898#M45541 <HTML><HEAD></HEAD><BODY><P>Is the WLAN anchored?</P><P></P><P>Sent from Cisco Technical Support iPad App</P></BODY></HTML> Tue, 20 Mar 2012 17:21:19 GMT https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926898#M45541 Stephen Rodriguez 2012-03-20T17:21:19Z Connectivity problem after adding a second WLC https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926899#M45542 <HTML><HEAD></HEAD><BODY><P>No they WLAN's are not anchored. </P></BODY></HTML> Tue, 20 Mar 2012 17:35:00 GMT https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926899#M45542 Bob Bagheri 2012-03-20T17:35:00Z Re: Connectivity problem after adding a second WLC https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926900#M45543 <HTML><HEAD></HEAD><BODY><P>Can you post the configs? Feel free to scrub them so bling as we have the mobility interface and WLAN configs.</P><P></P><P>Steve</P><P></P><P>Sent from Cisco Technical Support iPad App</P></BODY></HTML> Tue, 20 Mar 2012 18:59:03 GMT https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926900#M45543 Stephen Rodriguez 2012-03-20T18:59:03Z Re: Connectivity problem after adding a second WLC https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926901#M45544 <HTML><HEAD></HEAD><BODY><P>It appears the MFP on the AP's was off on one controller.</P><P></P><P>Thanks for trying to help.</P><P></P><P>Re,<BR />Bob </P></BODY></HTML> Tue, 20 Mar 2012 22:18:32 GMT https://community.cisco.com/t5/wireless/connectivity-problem-after-adding-a-second-wlc/m-p/1926901#M45544 Bob Bagheri 2012-03-20T22:18:32Z