A SDN Based Scalable Network Across Data Centers

The demands for the network across data centers are becoming more and more intense recently. However, there are three problems need to be solved, i.e., the ever-increasing number of actual or virtual machines demands, effectively manage these different machines and maintain the effectiveness. A scalable network across data centers is a very important technology to solve them. This paper proposes a new software defined network (SDN) based scalable network framework and its significant characteristic is to build a scalable layer 2/3 network that across data centers over the internet by using SDN's technologies. Our framework has high performances because: 1) The operation of encapsulating and unpacking packets is not necessary; 2) Routing paths can be pre-computed; 3) Traffic engineering to be implemented.