太赫兹科学与电子信息学报Issue(6)：907-911,5.DOI:10.11805/TKYDA201406.0907
一种区分服务模型及其在三层交换机的实现
Implementation of a new Diffserv model based on 3-layer switch
夏俊1
作者信息
- 1. 深圳市电子学会，广东 深圳 518057
- 折叠
摘要
Abstract
Quality of Service(QoS) is used to define different forms of network traffic to provide different levels of service assurance capabilities. The models and architectures of QoS fall into several types. A new type of application model of QoS—Differentiated service(Diffserv) application model is proposed according to the standard of RFC2474 and RFC2475. This model is composed of sub-modules such as classifier, meter, marker(remarker), dropper and scheduler etc. Meanwhile, the algorithm of Weighted Round Robin with Max Bounded Delay(WRR-MBD) of scheduler is proposed and analyzed in detail. Finally, the implementation of Diffserv based on 3-layer switch is described. Through a network analyzer to test QoS of 3-layer switch, it is concluded that in WRR scheduling policy, the loss rate of packets with different priorities is basically allocated according to the ratio of weight, which avoids low priority queues“hunger” existing in strict priority scheduling policy.关键词
服务质量/区分服务/区分服务编码点/3层交换Key words
Quality of Service/differentiated service/Differentiated Services Code Point/3-layer switch分类
信息技术与安全科学引用本文复制引用
夏俊..一种区分服务模型及其在三层交换机的实现[J].太赫兹科学与电子信息学报,2014,(6):907-911,5.
