HADES: A compatible SDN based network virtualization architecture

Network virtualization has been regarded as a candidate solution for providing cloud network services. VLAN has been the most common approach for providing isolated logical network but with a well-known scalability issue. Both the Industry and the Academia carried out promising network virtualization solutions to address the problem. However, upgrading the virtualization technology makes data center operator suffer from a series of risks, such as the waste of early investment and the interruption of running application. To overcome this barrier we presented a novel software defined network (SDN) based network virtualization architecture HADES. In HADES, virtual machines within the same virtual network could communicate with each other normally regardless of the underlying network virtualization technology. We describe and implement a prototype of HADES architecture and demonstrate the scalability and the efficiency of the solution.