I have a existing wireless setup of 4400 WLC with some AP's connected remotely,now i am migrating the whole setup to the new WLC 5500. All the AP has been registered to the new WLC 5500 except the remote location AP's.As there was no option of giving IP address in GUI of the controller in 4400 WLC, i have changed the controller name and restarted the AP, but even though it is going back to the old controller. Please suggest on this.
Because AP has saved the Details of Previous Controller details. Have you checked APs Joining process through console? If it is not able to discover the Controller and it is going to previous controller, you can do a hardware reset by pressing reset button in AP and you can give Static IP for AP and Controller IP manually throgh CLI of AP
capwapp ap ip address (IP for AP ) (mask)
capwapp ap controller ip (IP of WLC ) (Mask)