Simulation of Information Flow on Transport Layer of Open System Interconnection-Model

Network protocols on transport layer of Open System Interconnection (OSI) model of data transmission solve very difficult problems for delivery all messages in necessary places at designated time. There are no accurate mathematical methods for searching of solution for different problems of optimization for dynamical network characteristics. Some problems may be successfully solved by means of modeling, simulation optimization and other methods of modern cybernetics. The dynamical character of network causes problem of sufficient traffic capacity of data transmission system and admissible time delay because of variable volume of information flow or variable channel load. Sometimes the quantity of users may be so large, that network operation system may give a refuse and a set of messages may be lost. It is very important task to test network for stability work in case of different kinds of noise both amplitude and a distribution density. The main goal of the paper is consideration of one of the numerous ways for preliminary testing of network work with taking into account its dynamical features.