Abstract

With the trend of amplifying in network scale and application, traditional network protocols and function sare becoming increasingly large and complex. The core idea of SDN is to decouple network control from data transmission. OpenFlow switches implement data transmission function, so as to simplify the design of switches, and control functions are provided by controllers.In order to improve the performance of data transmission in SDN, this paper proposes a load balance solution scheme by taking advantage of the global network view of SDN.By updating topology information of global network, SDN controller can discover all paths between each source node to each destination node.For the purpose of choosing real-time least loaded path, load balancer immediately calculate the integrated load condition of multiple path when receiving the path information transmitted from SDN controller.The contrast experiment results show that load balancing strategy proposed in this paper can select more rational transmission path for data-flow.

Authors and Affiliations