本文研究了IP/MPLSoverWDM网中 ,如何建立两条共享风险链路组 (SRLG)分离的标记交换路径 (LSP)问题 ,提出一种新的基于SRLG分离的共享通路保护算法 .该算法既可以保证用户业务的可靠性要求 ,同时又能够有效提高全网的资源利用率 ,从而大大降低全网LSP建立请求的阻塞率 .本文还对所提算法进行了仿真研究 ,并给出了仿真结果 . This paper studies how to establish label switched paths (LSPs) separated by SRLGs in IP / MPLS over WDM networks and proposes a new shared path protection algorithm based on SRLG separation. This algorithm can guarantee User service reliability requirements, but also can effectively improve the utilization rate of resources across the entire network, thus greatly reducing the blocking rate of the whole network LSP establishment request.This paper also simulates the proposed algorithm and gives the simulation results.