A wireless network and associated method for providing continuous
communication service for a mobile unit as it roams within a virtual
wireless network. The virtual network includes home and foreign access
controllers and a virtual network manager (VN manager). The VN manager is
used to maintain a VN configuration record that includes all active
access controllers within virtual network and to disseminate said VN
configuration record to all active access controllers. A tunneling data
communication connection is established between all active access
controllers including home and foreign access controllers. When a mobile
unit first connects to home access controller and then roams to foreign
access controller, communication data is transmitted between the mobile
unit and the foreign access controller to provide continuous data
communication on the basis of the characteristics defined by the virtual
networking services while simultaneously preserving the IP configuration
of mobile unit on the network.