(东南大学计算机科学与工程系,江苏南京 210096;教育部计算机网络和信息集成支撑技术重点实验室,江苏南京 210096)
Packet Marking Algorithm Research in Differentiated Service Networks
MA Xiao jun,YAN Jun,GU Guan qun
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Received:February 29, 2000    Revised:June 12, 2000
> 中文摘要: 区分服务是近两年的一个研究热点,其目的是为用户提供较大粒度的服务质量(QoS)保证.与集成服务模型相比,区分服务不仅具有良好的可扩展性,而且更容易在传统IP分组交换网络上实现.研究了区分服务的一个关键机制——分组标记策略,并提出了一个具有公平性的分组标记算法(fairmarkingpacketalgorithm,简称FMPA),通过仿真把该算法与现有的等比例的标记算法进行比较.此外,还提出了一种分组再标记(remarking)算法,该算法可尽可能地维护分组原有的服务语义.通过仿真对该算法进行了验证.
Abstract:Differentiated service (DiffServ) architecture has become one of the research hotspots on computer networking in the last two years. Its intention is to provide quality of service for users at coarse granularity level. In contrast to integrated service architecture, DiffServ is not only more scalable, but also easier to be deployed in traditional packet switching networks. In this paper, the packet-marking algorithm, one of the key mechanisms in DiffServ is studied. A new packet-marking algorithm called FMPA (fair marking packet algorithm) is presented. The new algorithm is compared with the existing proportional pachet-marking algorithm by simulation. In addition, a packet remarking algorithm is proposed. By using it, the packet's original semantic can be kept to the largest degree. The simulation result shows it in this paper.
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基金项目:国家自然科学基金资助项目(69873008,69896249);东南大学计算机网络与信息集成教育部重点实验室资助项目 国家自然科学基金资助项目(69873008,69896249);东南大学计算机网络与信息集成教育部重点实验室资助项目
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MA Xiao jun,YAN Jun,GU Guan qun.Packet Marking Algorithm Research in Differentiated Service Networks.Journal of Software,2001,12(10):1472-1478