Abstract: The nature of network traffic is the basis of studying and analyzing network performance as well as planning network construction.The key to network traffic research is how to sum up and analyze the real traffic.Based on the prerequisite that self-similarity models can better describe the features of network transmission,this paper conducts simulated studies by generating self-similar traffics,elaborates the formation of self-similarity,proposes a research method of integrating traffic self-similar source with TCP protocol,describes the cause of network traffic self-similarity,and observes the fact that network performance varies with change of parameters,which has practical significance in the design、control、analysis and management of NGN(new generation network ).

Key words: Network Traffic, Self-Similar, Effect Factor