WDM网络组播连接保护切换时间分析

Analysis of protection-switching time for multicast connections in WDM mesh network

保护切换时间是衡量一个网络保护方案性能优劣的重要指标之一。文章给出了一种波分复用(WDM)网络中组播连接的保护切换模型,并在此基础上对目前主要的组播连接保护方案的保护切换时间做了理论上的分析和比较,这些方案包括link-d isjoint保护、arc-d isjoint保护和段保护。同时,结合各方案的连接阻塞率,对各方案的总体性能做了简要的分析。

Protection-switching time is an important measure for evaluating the performance of a network protection scheme. In this article, a protection-swltchlng model for multicast connections in WDM network is presented, on which basis the protection-switching time of the main multicast protection schemes, including link-disjoint, arc-disjoint and segment protection, is analyzed and compared. The overall performances of these schemes are briefly assessed in connection with the blocking probability.