Simulation of a Fault Tolerant University Campus Area Network

Abstract

The University has peculiar network needs that must be met for effective dissemination of information. A network allow sharing of files, data and other information giving authorized users the ability to access information stored on other computer on the network. The Campus Area Network (CAN) is still faced with so many problems with the ever increasing demand of computer network due to inadequate fault tolerance. In this paper, fault tolerance was simulated using redundancy and its effect in a network investigated. In order to improve network reliability, information about a CAN was gathered and the problem analysed. The analysis was used in formulating a CAN model. Also statistics were collected for evaluation and effectiveness of the model. It was investigated that the Database server response time with fault tolerance and non-fault tolerance are 0.52sec & 0.97sec respectively which gradually reduces gradually to a constant values of 0.28sec & 0.33sec respectively. The File server response time for both fault tolerance and non-fault tolerance are 2.4 sec & 3.4sec respectively initially and then reduces gradually to a constant value of 0.75sec & 1.8sec respectively. Furthermore, Hypertext transfer protocol server response time for both fault tolerance and non-fault tolerance are 3sec & 3.5sec respectively initially which reduces gradually to a constant value of 1.7sec & 2sec respectively. We present in this paper the simulation and analysis of a fault tolerant CAN in the OPNET Modeller environment.