1、Register the AP to the WLC

With  the LWAPP  discover request  and  LWCPP discover  response ,the APs can register to the WLC.

2、Provide the security profile between AP and WLC

With the LWAPP, the  control Communication  between the APS and WLC  can be encrypted using AES-CCM

3、Provide the transport service 

With  the LWAPP ,the data packets of Clients can be encapsulated between different subnet or vlan over Layer 2 and Layer 

,just.like a tunnel.

4、Firmware  Management 

With the LWAPP ,the APS can download the Firmware from the WLC.

5、centralized Configuration Management 

With the LWAPP, the same AP policy configuration  can be downloaded from WLC to specific APS.