Prerequisites for Configuring Cisco Client Extensions
The software supports CCX versions 1 through 5, which enables and their access points to communicate wirelessly with third-party client devices that support CCX. CCX support is enabled automatically for every WLAN on the and cannot be disabled. However, you can configure Aironet information elements (IEs).
If Aironet IE support is enabled, the access point sends an Aironet IE 0x85 (which contains the access point name, load, number of associated clients, and so on) in the beacon and probe responses of this WLAN, and the sends Aironet IEs 0x85 and 0x95 (which contains the management IP address of the and the IP address of the access point) in the reassociation response if it receives Aironet IE 0x85 in the reassociation request.