Abstract:In order to accurately describe and depict the networked TP request, networked testing traffic is modeled. After analyzing the communication protocol and TP of LXI test system, the structure, types of testing data and their arrival characteristics are made clearly. Then, on this basis, their arrival models are established, and the parameter estimation method for them is advanced. Finally, simulate the testing traffic by OPNET, and through the comparison of simulated and measured data, verify the testing traffic model is correct. It lays the foundation for the further study of testing traffic feature and real-time performance evaluation of the system.