WDM疏导网络中基于光路的动态恢复

Lightpath-based dynamic restoration in WDM grooming networks

针对波分复用(WDM)网络中单链路出错的生存性流量疏导问题,文章提出了一种基于光路的动态恢复机制(DRAL)。DRAL不预留任何资源,当链路出错时,通过在网络中动态地发现资源来对错误链路进行恢复,将一个出错的光路转发到一条新建立的光路或其他可用的光路上。仿真结果显示,DRAL拥有很高的恢复概率。

In view of the survivable traffic grooming due to single link failures in WDM networks, this paper presents a novel lightpath-based dynamic restoration mechanism, which reserves no resources. When a link failure occurs, it restores the failure by dynamic discovery of network resources and reroutes the failed lightpath to a new lightpath or other available ones. Simulation results show that the proposed scheme has a high restoration performance.