Association of Access Point to WLAN Controller

This subtopic describes the association of access points to the WLAN controller.

Association of Access Point to WLAN Controller

• Access points use LWAPP in Layer 2 and Layer 3 mode to associate to the WLAN controller.

• In Layer 3 mode, the access point sends an LWAPP discovery request to the controller management IP address via a directed broadcast.

• The controller responds with a discovery response from the manager IP address that includes the number of access points currently associated to the access point manager interface.

• The access point chooses the access point manager IP address with the least number of access points and sends the join request.

• All subsequent communication is to the WLAN controller access point manager IP address.

Lightweight access points first search for a WLAN controller using LWAPP in Layer 2 mode. Then the access point searches for a WLAN in Layer 3 mode.

The access point requests an IP address via DHCP. The access point then sends a LWAPP discovery request to the management IP address of the WLAN controller via a broadcast.

The WLAN controller responds with a discovery response from the manager IP address. This response includes the number of access points that are currently associated to that access point manager interface and the access point manager IP address.

The access point chooses the access point manager with the least number of associated access points and sends the join request.

All subsequent LWAPP communication is done to the access point manager IP address of the WLAN controller.

6-110 Building Cisco Multilayer Switched Networks (BCMSN) v3.0 © 2006 Cisco Systems, Inc.

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