On Dynamic Hypervisor Placement in Virtualized Software Defined Networks (vSDNs)

On Dynamic Hypervisor Placement in Virtualized Software Defined Networks (vSDNs)

연구 분야: Networking

학회: 2020 22nd International Conference on Transparent Optical Networks (ICTON)

Virtual software defined networking networks (vSDNs) combines the benefits of software defined networking (SDN) and network virtualization, and is important to make effective use of physical network resources. In vSDN environments, the control plane latency is the sum of the two parts: the latency from switch to its hypervisor and the latency from hypervisor to controller. Therefore, in order to optimize the latency of the network, the location of hypervisors need to be carefully decided. In this paper, we study the placement strategy of hypervisors when the location of hypervisor may be changed at run time. We mainly have two goals: minimize the latency of switch to its controller and minimize the impact caused by hypervisor migration. We define the problem as the dynamic hypervisor placement problem (DHPP) and formulate it into an Integer Linear Problem (ILP). Our evaluation results show that this minimizes the controller plane latency while incurring low hypervisor migration overhead.