Corba / Java-based Vpn Nms's Research And To Achieve

With the rapid development of Internet and increasingly expandedness of network application, VPN network are used abroad by company. At the same time, the increasing scale, complexity and function of the network are making network management more and more important. To meet the increasing demands on network management system, the traditional system based on Manager/Agent model adopting a centralizing model has been faced with a series of hard problems: lacking integration ability; lacking expansibility; the difficulty on complex network management programming; the limited retractility caused by the high centralization of network management application. In order to solve these problems, the new generation model of network management system should be transplantable inter-operating scalable and available.As an distributed computing model, CORBA is provided with feature of Object-orient, inter-platform and inter-language etc., CORBA is becoming the core technology driving the development of network management. It has the unparalleled superiority: easily creating the expansible network management model; adapting to the retractility of network management system; offering open and standard interface; separating the users' interfaces from manager's code; integrating with the programming language's advantage; offering high compatibility and availability. Integrating CORBA with SNMP WEB and Java makes the network management based CORBA more stronger. In this thesis, based on the management requirement of VPN network, the author made a description about her study in the field of the open computer network system combined with new network technology.Firstly, the thesis discusses the current computer network management framework, summarizes the network management model, analyses the typical network management framework, and educes the developing trend of network management framework.Secondly, the thesis analyses network management protocols and compare CMIP with SNMP, and discuss the problems in OSI network management and in Internet network management respectively.Then we analyse network management protocols, and discuss the problems in OSI network management and in Internet network management respectively.Then, the thesis introduce the Computer network management technology such as WEB.CORBA and XML, analyses and discusses the relationship between WEB,CORBA,XML and network management. By integrating the benefits of these technologies, we bring forward the network management framework based on CORBA/ SNMP/WEB, and put forward layer system architecture by the network management model based on CORBA/SNMP/WEB. This architecture is of excellent characters, such as high expansibility, high retractility, standard interface, multi-platform sustainability. Based on these researches, we finish the design of the network management system based on CORBA/SNMP/WEB and implementation by Java.Finally we summarise the deficiency of our work, and point out the R&D and perspective of network management.