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An improved SDN-based fabric for flexible data center networks

Data centers play an important role with the fast growth of cloud computing used in our daily life. Traditional data center networks based on the fat-tree topology have their own drawbacks and limitations which prevent them from providing high performance to satisfy the increasing demand for cloud services. In this paper, we first design a new flexible network fabric for data center networks based on the concept of Software Defined Networks (SDN). Then, we also propose a simple yet efficient route calculation algorithm for this architecture. Simulation results show that the improved SDN-based switch fabric topology can support more hosts, provide more bandwidth and the shortest paths are found in a smaller amount of time.