SDN全网拓扑发现及链路时延测量方法研究

Research on SDN network topology discovery and link delay measurement methods

当前SND被广泛应用到流量工程、安全监测等领域,为了进一步提升SND应用的可靠性,对这一技术应用过程中表现出的技术难点进行研究。文章考虑到SND整体应用过程相对复杂,主要介绍了全网拓扑发现方法与链路时延测量方法。研究发现:NSGA—Ⅱ节点选择算法可以有效平衡测量节点与测量路径间的制约关系,为网络链路延时测量节点问题的解决提供有效的支持。通过在当前网络体系发展过程中,能够通过快速、完整获取网络结构,并对相关性能进行统计收集的方式,为SND研究发展提供助力,满足当前人们对网络体系可持续发展的实际需要。

Current SND is widely used in flow engineering,safety monitoring and other fields.In order to further improve the reliability of SND applications,to study the technical difficulties shown in the application process of this technology.Considering the overall complexity of SND.This paper mainly introduces the whole network topological discovery method and the link delay measurement method.NSGA-Ⅱ node selection algorithm can effectively balance the restriction relationship between measurement nodes and measurement path.Provide effective support for the solution of the network link delay measurement node problem.Through the development process of the current network system,capable to obtain the network structure quickly and completely.And the way of the statistical collection of related performance,to facilitate the development of SND research,to meet the current people's actual needs for the sustainable development of the network system.