Behaviours of networks with different topologies and protocols Original Research Article

In researches on computer network, simulation experiments for various different topological structures are used widely. But it is still a confusing problem that how these topologies have influence upon the results in these researches. In this paper, several popular topological structures, such as the Transit-Stub, the two-dimension lattice, and the BRITE, are adopted in simulation experiments so as to study their contributions to the results of simulations. It is discovered that network models based on different topological structures exhibit similar behaviours as a whole. In addition, dynamic rules are considered as one of the main sources of the complex phenomena occurred in computer networks. Because a network protocol covers the most aspect of dynamic rules in computer networks, it plays an important role in a dynamic evolutive process. This paper uses the connectionless UDP protocol and the connection-oriented TCP one to investigate such contributions. As a result, different behaviours are observed in the simulation. Finally, a conclusion remark is drawn.