基于虚拟专用网的公路监测系统QOS机制研究  

Study on QoS mechanism in Highway Monitoring System based on virtual private network

作　　者：阴国富[1] 

机构地区：[1]渭南师范学院计算机科学系,渭南714000

出　　处：《铁路计算机应用》2010年第12期54-56,共3页Railway Computer Application

摘　　要：通过分析MPLS网络的工作原理,提出将MPLS-VPN网络结构应用于公路检测网,能够解决现有网络的瓶颈弊端、提高网络安全性、满足高速公路监测网的需求;研究发现网络边缘MPLS标签和DiffServ模型的分类过程具备相似性,由此提出:在MPLS网络中引入DiffServ模型,针对不同的业务需求,借助MPLS标签进行区分服务,提高QoS。仿真实验表明:该技术能有效改善网络的服务质量,提高网络层的扩展性,满足公路检测网的实时性要求,提高公路网数据资源共享,促进交通智能化的快速发展。The characteristics of MPLS networks were analyzed.An MPLS vpn network structure was proposed to be used in the highway monitoring network to solve the bottleneck drawbacks of the existing network,to improve the network security,and to meet the needs of the highway monitoring network.The basic principle of the DiffServ differentiated service model and the work way were studied.The labeling process of the network edge MPLS was similar to the classification process of the DiffServ model,on the basis of which the model was introduced into the network.Thus,the labeling process was distinguished in accordance with the requirements of different services.QoS was improved then.The simulation results showed that this technology not only met the basic needs of building special road monitoring networks,but improved effectively the performance-price ratio of the routing technology of the network layer,increased the network expansion,and satisfied requirements of the real-time detection and security of the road monitoring network.The Highway Monitoring Network System could better the the resources of road network data,improve the road network management level,and promote the rapid development of intelligent transport.

关 键 词：监测网 MPLS网络 DIFFSERV模型 隧道 

分 类 号：TP393.17[自动化与计算机技术—计算机应用技术]