WDM疏导网络中的基于连接的动态恢复

Dynamic restoration at connection granularity for survivable traffic grooming in WDM networks

针对WDM网络中单链路出错的生存性流量疏导问题,提出了一种基于连接的动态恢复机制(DRAC)。DRAC不预留任何资源,当链路出错时,通过在网络中动态的发现资源来对错误进行恢复,将一个出错连接转发到一条新的多跳路径。仿真结果显示,提出的这种动态恢复机制拥有很高的恢复概率。

This paper addresses dynamic restoration to the scenario of single link failure for survivable traffic grooming in WDM mesh networks. A new scheme is presented, dynamic restoration at connection granularity （DRAC）. Different from resource protection, DRAC restore failures through dynamically discovering network resources, but not through resource reservation. It routes a failed connection to a new multihop path. Simulation results show that the proposed scheme has a high restoration performance.