基于DiffServ体系的QoS实现特定业务服务质量  

Implementation of specific service quality of QoS based on DiffServ system

作　　者：金伟超 JIN Weichao(Department of Information Technology,Xuzhou Economic and Trade Branch,Jiangsu United Technical Institute,Xuzhou Jiangsu 221004,China)

机构地区：[1]江苏联合职业技术学院徐州经贸分院信息技术系,江苏徐州221004

出　　处：《智能计算机与应用》2018年第4期132-135,共4页Intelligent Computer and Applications

摘　　要：随着计算机网络的飞速发展,网络的各种应用(OA系统、语音系统、网络视频监控系统)日趋复杂,导致网络传输数据的种类越来越多,网络上各种数据的重要性、优先级不同,需求的带宽也不一样。不具备Qo S功能的网络,其同等对待所有的转发数据流,并不保证某一特殊的数据流会受到特殊的转发待遇。当网络带宽充裕的时候,所有的数据流都得到较好的处理,当网络发生拥塞的时候,所有的数据流都有可能被丢弃。这种转发策略是尽最大能力转发数据,其只能尽可能充分利用交换机自身的带宽,因此不具有提供品质服务的能力。在网络中配置Qo S可以避免网络管理拥塞,减少报文的丢失率,调控网络的流量,为特定用户或特定业务提供专用带宽和支持网络上的实时业务。实现重要数据的优先传输,本文介绍了基于Diff Serv体系的Qo S实现特定业务服务质量。With the rapid development of computer network,various network applications（ OA system,voice system,network video monitoring system） have become increasingly complex,more and more types of data are transmitted through the network. The importance and data priority are not the same on the network,the bandwidth requirements consequentially are not the same. The network without QoS function could treat all the forwarding data equally,and could not guarantee that a particular data stream receives special forwarding treatment. When the network bandwidth is abundant,all data streams are well processed. When the network is congested,all data streams may be discarded. This forwarding strategy is to transmit data to the greatest extent,and only make full use of the bandwidth of the switch itself,so it does not have the ability to provide quality services. According to the recent research,configuring QoS in network can avoid network management congestion,reduce packet loss rate,regulate network traffic,provide dedicated bandwidth for specific users or specific businesses,and support real-time services on the network. In order to realize the priority transmission of important data,this paper introduces the implementation of the specific service quality of QoS based on the DiffServ system.

关 键 词：Qo S DiffServ体系 优先级传输 拥塞控制 

分 类 号：TP202[自动化与计算机技术—检测技术与自动化装置]