Design And Implementation Of Network Management System Based On Multi-constrained QoS Routing

With the rapid development of mobile Internet,global mobile data traffic experiences an exponential growth.New services with diversified quality of service(QoS)requirements are emerging,such as ultra-high-definition video and virtual reality,which results in more complex communication network architecture,increased pressure on carrying data,and difficulty in ensuring service of quality.This situation will affect the security and stable operation of the network.Simultaneously,the traditional network management has the non-uniform temporal and spatial distribution,and ineffective coordination between layers,which is a simple network management mode.It results in serious inter-system interference,low resource utilization,and cannot guarantee end-to-end seamless QoS requirements.Therefore,it is of great significance to research and develop a new network management system for improving network resource utilization as well as improving overall system performance under the limit of QoS requirements.Based on the improvement of existing network management system,this thesis studies the routing algorithm,SSR mode,visualization and other related technologies used to implement a network management system based on multi-constrained QoS routing.In general,the main tasks are as follows:(1)Analyze and design a network management system based on multi-constrained QoS routing.It mainly includes the analysis of the functional requirements and non-functional requirements of the system.The performance layer and service layer are designed by class diagrams with the combination of system architecture.The design details of main modules are introduced by sequence diagrams and flowcharts.(2)Propose a multi-constrained QoS dual-path routing algorithm based on extended Dijkstra algorithm.Firstly,the network topology is simplified under the limit of bandwidth and non-isolated nodes,and then pheromone update of the ant colony algorithm is introduced to convert multiple QoS constraint parameters into one measurable parameter.Finally,the optimal dual path with the multiple constraint of QoS is worked out through the extended Dijkstra algorithm.(3)Implement the network management system based on multi-constrained QoS routing.The construction of network management system is based on SSR mode and principally introduces the computation of routing for specific ethernet services by multi-constrained QoS dual-path routing algorithm based on extended Dijkstra algorithm.Visualization technologies are used to implement the display of network topology and ethernet service topology.Simultaneously,perform functional and non-functional experiments on network management system based on multi-constrained QoS routing.The results of experiments show that network management system based on multi-constrained QoS routing has the advantages of high network resource utilization,excellent performance and good stability.