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收敛速度是评判路由协议的一个重要指标,加快路由协议收敛速度成为路由协议研究的重点。距离向量路由协议在遇到路由环路时往往都采用水平分割、毒性逆转等方式来克服路由环路的形成,但无法克服“计数到无穷大”引起的收敛时间长的问题。以路由信息协议(RIP,Routing Information Protocol)为例,分析了距离向量路由协议产生路由环路的拓扑和原理,随后根据该原理提出了一种克服路由环路产生,加快路由收敛的方法,最后对这种方法的效能进行了简单的评估。
Convergence rate is an important indicator of routing protocols. To speed up the convergence of routing protocols becomes the focus of routing protocols. Distance vector routing protocols often overcome the routing loop formation when they encounter routing loops, such as horizontal segmentation and toxicity reversal, but they can not overcome the problem of long convergence time caused by counting to infinity. Taking the Routing Information Protocol (RIP) as an example, the topology and principle of routing loops generated by distance vector routing protocol are analyzed. Then, a method of overcoming routing loops and routing convergence is proposed based on the principle. Finally, The effectiveness of this method has been briefly evaluated.