For Avionics Full Duplex Switched Ethernet (AFDX) networks with a large number of Virtual Links (VLs), the availability of configuration and the efficiency of simulation implementation should be taken into consideration, especially for traffic policing mechanism. The AFDX network simulation model that contains preprocessing and postprocessing operation is developed on the OPNET simulation platform. It can ensure the operating efficiency while completely simulating the internal traffic policing mechanism of the exchanger. By preprocessing the configuration file, the model solves the problem of disposable loading mass VL configuration data. A token leak bucket algorithm with large scale VL is implemented in the traffic control module. Through the designed experiment, it is proved that the AFDX network simulation model has the ability of processing large-scale VL, and the traffic control module has high effectiveness and efficiency.