PTN中一种快速建立1:1保护路径的方法

摘要

介绍了分组传送网PTN的技术特点及其保护需求,提出了一种使用双路径OSPF路由算法在PTN网络中同时建立工作路径和保护路径的方法,并以PTN在3G回程网络的应用为例,给出了该算法的详细工作过程和流程图.定性分析了采用该算法对网络阻塞率和资源利用率的影响.%In this paper, the characteristic and protection requirement of PTN is introduced. Then put forward a dual-path OSPF routing algorithm in PTN, which can set up working path and protection path in one time,then give the detailed process and flow chart of dual-path OSPF routing algorithm through an example of PTN topology in 3G backhauling network. Finally,the influence to network congestion and the network resource utility of this dual-path OSPF algorithm is analyzed simply.