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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 (Qo S)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 (fair marking packet algorithm,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
Differentiated services is a hot research topic in recent two years, and its purpose is to provide users with a larger granularity of quality of service (QoS) guarantee.Compared with the integrated service model, the differentiated services not only has good scalability, and more easily in Traditional IP packet-switched network.A key mechanism of packet-oriented marking service is studied, and a fair marking packet algorithm (FMPA) is proposed. Through the simulation, the algorithm is compared with the existing And some equal proportion marking algorithms.An addition, a packet remarking algorithm is proposed, which can maintain the original service semantics of the packet as much as possible.The algorithm is verified by simulation