摘要
介绍了QOS及其功能,通过网络仿真来验证局域网中资源竞争问题的存在,以及各种服务类型的QOS数据流量及时间延迟。在一个提供电子邮件、文件传输、数据库共享、视频会议服务的LAN网络上,对其QOS进行分析,如时间延迟、线路流量、CPU利用率等指标,进而优化设计,在实际组网时具有可行性。并通过研究局域网络服务质量控制(带宽、延迟/延迟抖动和分组丢失率等)以提高网络性能。
This text has introduced QOS and function, and verify the existence of the resource competition question in the LAN through the emulation of the network, and the flow of QOS data of different service types and time delay. Provides the email, the file transfer, database sharing, in the video frequency conference service LAN network in one, carries on the analysis to its QOS, like targets and so on time delay, line current capacity, CPU use factor, then optimized design, when actual network has the feasibility. And through the research confined network grade of service control （the band width, extends detention to vibrate and groups less rote and so on） to enhance the network performance.
关键词
QOS
网络拓扑结构
网络延迟
QOS
topological structure of the network
the network delaying
