针对时延敏感型应用的SDN控制平面优化  

Optimization of SDN control plane for latency⁃sensitive applications

作　　者：王晨辉 倪宏[1,2] 刘磊 WANG Chenhui;NI Hong;LIU Lei(National Network New Media Engineering Research Center,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院声学研究所国家网络新媒体工程技术研究中心,北京100190 [2]中国科学院大学,北京100049

出　　处：《电子设计工程》2023年第10期117-123,128,共8页Electronic Design Engineering

基　　金：中国科学院战略性科技先导专项课题(XDC02070100)。

摘　　要：随着软件定义网络(SDN)规模的扩大,交换机与控制器间的响应时延逐渐成为网络性能的瓶颈。为了保证大规模网络中时延敏感型应用的时延需求,提出了一种两级分层控制平面架构的优化方案。在层次化架构的基础上重新设计了部分控制器的内部结构,模块化的设计思想使其具备灵活的控制策略;通过订阅转发模式,大幅度提升了北向通信的效率,为降低响应时延做出了保障;设计了基于网络服务标准化参数、与VIKOR方法相结合的应用程序调度决策模型,用于在资源受限的情况下尽可能满足多的应用程序对于网络资源的需求。通过对比实验,验证了经过优化后的架构时延对比传统框架下降3.66%~14.39%。With the expansion of the Software Defined Network(SDN)scale,the response latency between switches and controllers has gradually become a bottleneck of network performance.In order to ensure the requirements of latency-sensitive applications in large-scale networks,one optimization of a two-level hierarchical control plane architecture is proposed.The internal structure of partial controllers is redesigned on the basis of the hierarchical architecture,and the modular design idea enables it to have flexible control strategies;The efficiency of northbound communication is greatly improved through the subscription forwarding mode,which is the guarantee of low response latency;Based on the standardized parameters of network services and combined with the VIKOR method,an application scheduling decision model is designed to meet the requirements of as many applications as possible for network resources under the condition of limited resources.Through comparative experiments,it is verified that the optimized architecture latency is reduced by 3.66%~14.39%compared with the traditional framework.

关 键 词：软件定义网络 多控制器架构 时延敏感 消息分发 应用调度 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]