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Avionics Full Duplex Switched Ethernet(AFDX)is the major choice of communication network on airliner, and is equipped widely to the real liner. Aiming at the test demand of AFDX network, an approach to implement the AFDX test technology is proposed, which comes true on FPGA and embedded processor. With this approach, an AFDX end system is implemented along with AFDX network test function. The application results of the end system demonstrate that this technology can meet reliability and real-time requirements of avionics data transmission, and can also achieve the target of testing AFDX network performance. This end system is provided with 128 VLs and is able to handle BAG values in range 1ms to 128ms. Its test function mostly includes protocol decoding and analysis, fault injection and detection, bit error rate test, and IRIG-B time stamp. 