中文摘要：

在现今尚未实现全光网络的情况下,文章对多层光网络保护提出了一种新的策略,即采用监控系统进行协调多层保护。该策略在不改变已有网络结构与协议前提下,能够很好地实现光网络多层之间的恢复和保护。仿真结果证明,监控系统在光网络多层协调保护中的应用既解决了光网络中多层无法协调恢复的问题,又利用监控功能实现了预先建立网络静态路由,大大减少了网络层恢复时间。

英文摘要：

A new protection strategy for multi-layer optical networks is presented in this paper. The strategy is that the monitoring system is used for multi-layer coordination protection. The protection and restoration in multi-layer optical network can be implemented well by the new strategy, and the structure and the protocol of the networks needn＇t to be changed. It is shown by simulation that the application of monitoring system solves the problem of the coordination restoration of the multi-layer optical networks, and also greatly reduces the recovery time in the network layer by establishing a static network routing in advanced.