OpenFlow and Xen-Based Virtual Network Migration
Migration is an important feature for network virtualization because it allows the reallocation of virtual resources over the physical resources. In this paper, the authors investigate the characteristics of different migration models, according to their virtualization platforms. They show the main advantages and limitations of using the migration mechanisms provided by Xen and OpenFlow platforms. They also propose a migration model for Xen, using data and control plane separation, which outperforms the Xen standard migration. They developed two prototypes, using Xen and OpenFlow, and they performed evaluation experiments to measure the impact of the network migration on traffic forwarding.