AMRP (Aerohive Mobility Routing Protocol)
DNXP (Dynamic Network Extensions Protocol) ----layer 3 roaming
INXP (Identiy-Based Network Extension Protocol)----tunnel clients to selected Hive APs based on their credentials or SSID
ACSP(Automatic Channel Selection & Power Control)----dynamic selection of radio channels and power for wireless mesh
Take a look at the Aerohive brand page for more.