APs jumping controllers

[RYAN PAUL]

We have access points spontaneously jumping between 2 controllers. When this happens, the WLAN associations on the radios are lost. Each time an AP jumps to the other controller, the WLAN is re-assigned to the radio and the configuration is saved. This is highly problematic because the WLAN that is lost is our voice WLAN and calls are being droppped. Can anyone explain why this is happening?

We are running software version 5.1.151.0 on the WiSMs and using 1252 (a/b/g/n) access points.

Any help would be greatly appreciated.

Ryan

[RYAN PAUL]

I did the same thing and now the APs are remaining with their primary controller. The problem that has cropped up has been the APs losing their WLAN assignments. We have a "Voice" WLAN that keeps losing its assignment to the "a" radio on 1252 APs. I think I'm going to need to contact TAC.

[Leo Laohoo]

Do you want to "nail" your AP to associate to WLC1 as the primary and WLC2 as the secondary? If so, then log into the WLC where the problematic AP is currently associated to and do the following CLI commands:

config ap primary-base

config ap secondary-base

Does this help?

[dennischolmes]

They have already tried setting a primary and secondary controller. The issue is that the APs are not associating to the proper controller. The controllers really need to be in the same mobility group and failover must be correctly configured. Which it is in this case. I think its a problem with routing the traffic back the same route each packet.