SDN多控制器网络中基于交换机迁移的动态负载均衡策略  

Dynamic Load Balancing Strategy Based on Switch Migration in SDN Multi-controller Network

作　　者：黄泰铭 王雪 于波 李道全 HUANG Taiming;WANG Xue;YU Bo;LI Daoquan(School of Information and Control Engineering,Qingdao University of Technology,Qingdao 266520)

机构地区：[1]青岛理工大学信息与控制工程学院,青岛266520

出　　处：《计算机与数字工程》2021年第7期1389-1395,共7页Computer & Digital Engineering

基　　金：国家自然科学基金项目(编号:61572269)资助。

摘　　要：针对多控制器SDN网络环境下的负载均衡问题,论文提出了一种基于交换机迁移的动态负载均衡策略,共分为三个实施阶段:首先通过动态信息采集算法(DIA)收集各控制器间的负载信息,以决定需要实施交换机迁移算法的过载控制器;随后依据论文定义的迁移域及迁移交换机选取算法(MSS)决定迁移目标控制器以及需要迁移的交换机;最后依据交换机迁移协议完成交换机迁移,实现多控制器下的负载均衡。仿真实验结果表明负载均衡后SDN网络中交换机的吞吐率显著提升,且各控制器负载逐渐趋于均衡。For the load balancing problem under the multiple controller SDN network environment,this paper proposes a dy⁃namic load balancing strategy based on switch migration,implementation will be divided into three stages.Firstly the load informa⁃tion of each controller is collected by Dynamic Information Acquisition Algorithm(DIA)to determine which controller is overload and needs a switch migration.Then the migration target controller and the target switch to be migrated are determined according to the migration domain and migration switch selection algorithm(MSS)defined in this paper.Finally,switch migration is completed according to switch migration protocol to achieve load balancing under multi-controller network.Simulation results show that the throughput rates of switches in SDN network increases significantly after load balancing,and the load of each controller tends to be balanced gradually.

关 键 词：软件定义网络 多控制器 动态负载信息采集 负载均衡 交换机迁移 

分 类 号：TP393.0[自动化与计算机技术—计算机应用技术]