城域光网络生存性的研究

Survivability in metro optical networks

从分析目前常用的网络保护和恢复方法出发,提出将路由算法引入到光网络保护中去:通过动态路由算法,网络动态计算源、宿节点间最佳工作路径。通过将虚连接引入面向连接的光网络,建立保护路径。在消除为工作路径预留独享资源的同时,简化了保护倒换流程,缩短了故障恢复时间,提高了网络资源利用率。

Contract with the traditional way of network protection and service restoration, a new method is introduced into the optical network protection in this paper： though dynamic routing arithmetic, the best working path form source node to the destination node; though introducing virtual connection into point to point connection network, the protecting path is setup, which eliminating the reserving resource for the working path, simplifying the protection switch process, reducing the service restoration time, and improving the resource using.