A Study On Device Selection And Configuraton In The Process Of NSI

In this world, the informationization, networking and digitization are the main trends of the social development. The informationization tide strikes various fields of society. Enterprises have to connect their information islets and access to Internet to satisfy their steadily increasing demands for information. Only by connecting the information islets can a truly sharing, unblocked, organic network be formed. The concept of network system integration is originated and developed under the information tide.In this dissertation we discussed device selection and configuration problems confronted in the process of NSI form the angle of network system optimization based on analysis of NP index system. Problems of survey of NSI, index system used to evaluate a network performance and device selection and configuration are included in this dissertation. At last, to verify the availability of device selection and configuration for upgrading network performance, satisfying users' demand for higher network performance, reducing costs and heightening cost-performance ratio, a simulation model is built in OPNET.The problem of how to balance the relationship among performance, price and protocol configuration about network devices is solved in this dissertation. This dissertation can be helpful for both NSI traders and network users to reduce their devotion of manpower and material resources in the process of NSI, make the best use of investment, lower the cost of building a new network and heighten cost-performance ratio.