基于融合网络的多段伪线调度机制研究  

Research on MS-PW scheduling mechanism in convergence network

作　　者：夏欣[1] 张沪寅[2] XIA Xin ZHANG Huyin(Department of Information Technology, Wenzhou Vocational ＆ Technical College, Wenzhou 325035,China School. of Computer, Wuhan University, Wuhan 430072, China)

机构地区：[1]温州职业技术学院信息技术系,浙江温州325035 [2]武汉大学计算机学院,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2017年第4期637-640,共4页Engineering Journal of Wuhan University

基　　金：温州市科技局计划支持项目(编号:G20150032)

摘　　要：对融合网络场景中的多段伪线的建路机制进行了描述,在该场景中采用Overlay的方式建立隧道连接,并在此基础上进行了数学建模和分析,提出了一种使用RSVP-TE协议的改进算法来优化服务质量.该算法扩展协议增加了相关的对象用来携带伪线信息,并在网络的边界节点上采用多层嵌套的转发相邻的方式进行路径建立.通过实验对RSVP-TE方式的性能进行分析,并引入基于时延的概率密度函数计算时延的均值、方差和丢包率.结果表明,与传统的LDP相比,该方法降低了延时,有其优越性.This paper gives a description of the multi-segment pseudo-wire （MS-PW） path establishment in convergence network scenarios in which using the overlay method to establish a tunnel connection; on the basis of it, the mathematical model are established and analyzed. An improved algorithm based on the re- source reservation protocol-traffic engineering （RSVP-TE） is employed to optimize the quality of service （QOS）. This algorithm uses nested forwarding adjacencies to build the path on the boundary nodes of the network. The performance ofRSVP-TE method is analyzed by experiment; and the probability mass func- tion of time delay is applied to compute the delay mean, variance and loss probability. Compared with tra- ditional LDP protocol, this method reduces the time delay and confirms its superiority.

关 键 词：多段伪线 融合网络 服务质量 转发相邻 RSVP-TE 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]