基于关键链路优先的光网络流量疏导保护策略

Protection Strategy for Traffic Grooming Based on Priority of Key Link in Optical Network

针对当前网络流量拥堵严重的问题,分析了其形成原因。提出了关键链路的概念。采用了一种基于关键链路优先的网络流量疏导保护策略。利用空闲波长的大小实现对关键链路的监控。策略性地让业务流量避开网络中的关键链路。通过NSFnet网络拓扑进行算法仿真,结果表明有较低的阻塞率。和传统算法相比,该算法可以有效降低网络流量堵塞故障。

Fault protection network traffic congestion and its causes are focused. A concept of critical link is proposed and a key link priority based network traffic grooming protection strategy is adopted. The size of the idle wavelengths is used to achieve the monitoring of critical links so as to avoid the critical network link in the traffic strategically. Algorithm simulation results of NSFnet network topology show a lower blocking rate, which, compared with traditional way, can effectively reduce the network traffic congestion.