Product and Software: This article applies to all ArubaOS versions.
802.11f is a proposal that describes wireless access point (AP) communications among multivendor systems.
This technology, to be specified as the Inter-Access Point Protocol, handles the registration of APs within a network and the exchange of information when a user is roaming among coverage areas supported by APs from different vendors.
802.11f will help with fast hand-off from AP to AP.
802.11f was withdrawn by the IEEE in Feb 2006.
http://www.ieee802.org/11/Reports/802.11_Timelines.htm
No vendor has ever implemented 802.11f, and that includes Aruba.