Seamless Reconfiguration of Virtual Dedicate Network Based on Software Defined Network.

Recently, Software-Defined Networking (SDN) technologies have considered a nice way to realize network virtualization. SDN can efficiently and automatically manage virtual network(s) on physical network by allocating the substrate network resources. In this paper, we propose a seamless virtual dedicate network (VDN) reconfiguration method based on center node with highest closeness centrality for supporting new user demands. This method have no effect on the communications related with existing VDN, and also improves the performance of VDN reconfiguration.