关键词：
软件定义网络;网络通信;控制器;负载均衡
摘 要：
针对传统的网络控制器在大规模网络数据中容易出现负载过高、负载不平衡,路由规划不合理,进而导致网络波动影响系统整体性能的问题,提出一种基于SDN的网络通信系统均衡控制器的设计与实现方法,从而使网络流量得到合理分配及有效传输.首先,对控制器整体架构进行设计,引入软件定义网络思想,分析应用层和控制层、基础设施层,利用控制器中均衡模块采集的流量信息进行信道的合理分配;然后,根据路由流量的改变通过PID算法得出合理的路由规划路径,解决信道阻塞问题;最后,为了避免路由重新分配过程中流量中断,选择合适的流表更新算法.仿真结果表明,该设计可以明显提高系统的抗干扰能力,具有较好的信道均衡能力,传输效率高,传输时延得到了有效控制.
作 者：
LYU Jiaosheng;College of Information Engineering,Zhengzhou University of Industrial Technology;
单 位：
LYU Jiaosheng%College of Information Engineering,Zhengzhou University of Industrial Technology
关键词：
software defined networks;;network communication;;controllers;;load balance
摘 要：
For traditional network controllers,large-scale network data centers are prone to high load and load imbalance,and routing planning unreasonable,in turn,the overall performance of the system is affected the network fluctuations,so a design and implementation method of the SDN-based network communication system equalization controller was proposed by this paper,so that the network traffic is reasonably allocated and effectively transmitted.First of all,designing the overall architecture of the controller to introduce software-defined network ideas,analyzing the application layer,the control layer,and the infrastructure layer,and using the traffic information collected by the equalization module in the controller to perform reasonable channel allocation; then,according to the change of the routing traffic,a reasonable routing planning path is obtained through the PID algorithm to solve the channel blocking problem;finally,in order to avoid traffic interruption during route redistribution,the appropriate flow table update algorithm is selected.The simulation results show that the anti-interference ability of the system is significantly improved by the design,which has better channel equalization ability,high transmission efficiency, and effective transmission delay.
