| With the development of next generation network (NGN), NGN becomes more and more commercial. One of the hot issues that the telecommunication operation service provider and the telecommunication manufacturer concerned is how to manage all kinds of devices accessed to NGN effectively. The integrated access device (IAD) distributes broadly in NGN with large number. One of direction in this thesis is how to manage IAD with common way. It is concerned more about IAD unified network management system and how to ensure the performance of IAD access security in this thesis. At first, the thesis study the main parts of SNMP framework, they are SMI,MIB and SNMP. SNMP's version has been developed from 1 to 3, and the studies of their applications have also developed. And then, the thesis analyzes the traditional Client/Server architecture and Web-based architecture using in SNMP, compare their advantages and disadvantages using traditional architecture to construct SNMP application is expensive to develop and inconvenience to manage and difficult to use. Now, the Web technology is used widely, and The Web-based three tier distributed architecture has not the advantages which are the disadvantages in Client/Server mentioned above. So, the thesis put forward the new architecture, that is based on .NET framework and SNMP ++ module. This architecture, having the advantages of .NET Remoting, and has a good foreground. Lastly, on the study and analysis above, the thesis design a network management system based on Web method and SNMP. And on self-development manner, implement a manager application on SNMP++, which can browse MIB data stored in agents. Among the development, the thesis used the RSA digital signature to develop a tool for license control. These were the main works and contributions of the thesis. This system was test on the ShangHai filiale of China Unicom. This system has many excellent abilities:reliability, open and expansibility. The system can deal with all kinds of exceptions and errors, and it can add new module easy. The new version of IADMS was compatible with the old version, and the database can transfer from old version to new version very quickly. The system had achieved the standard of China Unicom and satisfied the customer demand. |