ASON控制平面探究

THE RESEARCH OF ASON CONTROL PLANE

本文主要针对自动交换光网络ASON的核心部分一控制平面进行研究。从ASON的结构切入,论证了控制平面的引入是ASON具有智能性的必要条件。GMPLS技术作为最易于实现控制平面的方法,讨论了RSVP-TE中LSP的连接、删除和状态刷新。对GMPLS生存机制中故障LSP的4中恢复方式的通道建立及恢复时间进行了分析和比较,从而得出资源预留综合考虑下是现阶段最优的恢复方式的结论,并对单点故障时各恢复方式在连接影响和业务丢失率方面进行相互比较,突出预置重路由的特点:恢复速度快,网络恢复能力的可预见性好。

This article mainly aims at the research of Automatic Switched Optical Network(ASON) and its core part-Control Plane.The paper start with the structure of ASON,and prove that CP bring ASON the essential condition of intelligence.It is easiest for GMPLS to realize CP,the research involves RSVP-TE and the action of LSP.In addition,compare with four methods of restore to carry on the analysis of time the protection path establish and restoration finish.The result is that resources reservation is the most superior restoration way when take into all expects account.One point breakdown analysis include the influence when break and its lose rate.The trait of Pre-placed heavy-route is emphasized:restore swiftly,excellent foresee ability on network restoration.