基于分类和时序的SDN流表更新一致性方案  

Classification and sequence based consistent flow update scheme in SDN

作　　者：齐婵 刘建伟[1] 毛剑[1] 王蒙蒙[1] 程昊苏 Qi Chan;Liu Jianwei;Mao Jian;Wang Mengmeng;Cheng Haosu(College of Electronic&Information Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《计算机应用研究》2018年第11期3405-3408,3412,共5页Application Research of Computers

基　　金：国家"973"计划资助项目

摘　　要：确保SDN流表更新的一致性,对保障网络配置更新过程的正确性与SDN的有效、安全运行,具有重要的意义。针对SDN配置更新所引起的数据包处理不一致问题,提出一种基于分类和时序的SDN流表更新一致性方案。通过设计交换机分类方案及优化更新顺序,实现了SDN流表更新的一致性和新、旧路径的数据并行传输,在保证方案良好通用性和隔离性的基础上,有效控制了更新时间和交换机存储空间的占用率,并降低了控制器的上传负载。Ensuring the consistency of the SDN’s flow table update is of vital importance to ensure the correctness of the network configuration update process and to achieve the effective and safe operation of the SDN.This paper proposed a consistent flow table update scheme based on classification and sequence to solve the problem of packet processing inconsistency caused by SDN configuration update.By designing the switch classification rule and optimizing the update order,this scheme realized the consistency of the SDN flow table update and the parallel transmission of the new and old routes.On the basis of ensuring the generality and isolation,this scheme controled the update time and the storage space of the switch effectively,and decreased the upload of the controller.

关 键 词：软件定义网络 流表更新 一致性更新 OpenFlow 

分 类 号：TN918.91[电子电信—通信与信息系统]