Any of the discovery steps 2 through 6 can inform the AP of a list of multiple IP addresses to which the AP may attempt to connect. Once the AP has discovered these addresses, it sends out connection requests to each of them. These requests are sent simultaneously. The AP attempts to register only with the first which responds to its request.
When the AP obtains the IP address of the controller, it connects and registers, sending its serial number identifier to the controller, and receiving from the controller a port IP address and binding key.
Once the AP is registered with a controller, configure the AP. After the AP is registered and configured, you can assign it to one or more Virtual Network Services (VNS) to handle wireless traffic.
The AP is registered with Secure mode and Un-secure mode. For new APs, that option is set in AP Default Settings dialog.