I have a network composed of some indoor APs in remote locations. All the APs are connected to a virtual SmartZone in Bridge mode. I am using an external captive portal server and an external radius for authentication. There is no layer 3 mobility, only one VLAN (one subnet) for all the users. I have an issue when the user roams from one AP to another: the user is no longer authenticated when he moves to the new AP and thus he is redirected to the captive portal for authentication each time he associate with a new AP.
Does someone have an idea what could possibly cause this or how I can tshoot.