Multi-controller Load Balancing Architecture Based on Software Defined Network

Abstract

Through the analysis of multiple of distributed architectures of Software Defined Network(SDN),a new architecture named the Distributed Control Architecture(DCA) is proposed based on SDN.DCA separates the control layer into load balancing layer and control system layer.It runs load balancing algorithm with several load balancers,which can effectively avoid the problem that load balancer becomes a new bottleneck in network.As well as the usage rate of CPU and memory,the number of connection requests is also added into the load factor.In addition,based on dynamic feedback information,the load condition of each controller can be reflected accurately.Simulation results based on virtual machine and Mininet proves the feasibility of this architecture.