The Design And Implementation Of The Network Flow Analysis System

As an important Support System of the network management, The network flow analysis system, which directly begins with the top level business, provides the network constructive basis for the Internet service providers. Based on the work we did, this paper discusses the architecture design of the network flow analysis system and the choice of development platform. A design and implementation of the network flow analysis system is given, which is based on .Net and J2EE.The netflow management database are analysed and designed. Data Warehouse is also introduced in order to obtain the information from multitude netflow data which the users need. With the support of Microsoft SQL Server 2000 Analysis services and On-Line Analytical Processing technology, the netflow data warehouse is designed, and the utilization of On-Line Analytical Processing technology to query netflow data will shorten the time of getting data.Function modules in data collection layer, data processing layer and data showing layer are designed respectively and described in detail. Xml Web Services technology is presented to solve the alarm information correspondence between web server and browser; polling task manager is designed to make reports in different time; using Application and Session object solve the contradiction between web page's stateless and user information's preservation in the practical application; using MVC design pattern separates data and its presentation, whch strengthens the flexibility of system update. The network flow analysis system we design and implement is provide with maintainability, integration, expansibility, flexibility, adaptability, it is simple and easy to operate for customers. Moreover, the system is verified by Hangzhou Netcom. The result shows that it meets its design goal.