How does wireless roaming work inside the CERN laboratory?
The wireless network at CERN has been planned and deployed in order to give the smallest amount of roaming problems to the users. Unfortunately, it is not possible to provide CERN wireless clients with the ability of going around the laboratory without interruptions in service or loss of connection. This is due to the large size of the CERN site and to the structure of the wired network (and subnetworks) which wireless access points connect to. As far as possible, inside one building, wireless users can roam freely without any loss of connection. Therefore for all access points located in the same building, wireless clients can move from one coverage area to another without experiencing any roaming problem. The service cannot be guaranteed for wireless roaming amongst buildings and, sometimes, it cannot be guaranteed neither inside the same building (especially in case of big buildings, served by multiple wired subnets).
