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 | High-speed wireless connectivity at hundreds of participating institutions worldwide. Eduroam allows any user from an eduroam participating site to get network access at  any  institution  connected to eduroam . Depending on local policies at the visited institutions, eduroam  participants  may   also have additional resources at their disposal. | 
|  | When a user requests authentication, the user's realm determines where the request is routed to | 
|  | For international roaming, a regional top-level RADIUS server is needed in order to roam the users  request to the right territory. Currently there are two top-level RADIUS servers deployed in Europe. | 
|  | Federation-level servers have a complete list of the participating eduroam institutions in that country. This is sufficient to guarantee roaming operations. | 
|  | Every institution that wants to participate in eduroam connects its institutional RADIUS server to the federation level RADIUS (FLR) server of the country where the institution is located. |