一种基于Clos网络支持QoS的DHiRRM调度算法  

A QoS-Supported DHiRRM Scheduling Algorithm Based on Three-Stage Clos Network

作　　者：李秀丽[1] 李秀芹[1,2] 

机构地区：[1]华北水利水电学院,郑州450045 [2]解放军信息工程大学NDSC研究所,郑州450002

出　　处：《河南大学学报（自然科学版）》2011年第2期193-196,共4页Journal of Henan University:Natural Science

基　　金：国家973重点基础研究发展计划项目(2007CB307102);河南省科技攻关项目(092102210059)

摘　　要：在分析三级Clos网的基础上提出了一种支持QoS的三级Clos分布式交换结构.对该结构进行区分服务模型的引入,分别从输入端口和输出端口进行了设计与分析;并从算法的有效性和复杂度等方面,对提出的交换结构的可扩展性和QoS策略作了分析.最后,在交换网络输入端利用改进的Diff-Serv模型进行数据流的区分,在Diff-Serv域内确保优先级高的业务流得到更好的服务质量,提出了DHiRRM调度算法,使该交换结构的设计能提供优良的QoS策略.On the basis of the analysis of the three-stage Clos network,this paper puts forward a QoS-supported distributed three-stage Clos switching fabric;the structure of the introduction of differentiated service model,respectively,from input ports and output ports for the design and analysis;and from algorithm and complexity in terms of the structure of the proposed exchange of scalability and to improve their QoS strategy is analyzed.Finally,using improved Diff-Serv model in the switching network input,the distinction between data flow in Diff-Serv domain to ensure that high priority service flow better quality of service,we proposed DHiRRM scheduling algorithm,so that the switching fabric was designed to provide good QoS strategy.

关 键 词：可扩展性 服务质量 三级Clos网 DIFF-SERV模型 调度算法 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术]