A monitoring network on highways based on VPN and study of its QOS mechanism

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 labeling process of the network edge MPLS is similar to the classification process of the Diff-Serv 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.