Abstract
Server load balancing based on SDN compared with the traditional load balancing method, can effectively improve the performance of the server load balancing, and reduce the complexity of implementation. Open flow is south interface protocol of SDN switch. The core of server load balancing based on SDN is dynamic building Open flow flow tables. This paper puts forward a dynamic flow table design algorithm which based on "single flow table" and "group flow table" combination, "Single flow table" can accurately monitor traffic of each client, "Group flow table" can effectively category client hosts. This algorithm does not only effectively avoid excessive number of flow tables, and better solve the defect that flow table matching range is too wide, experiments show that the algorithm has good feasibility and higher traffic scheduling performance of network.