基于FPGA的列车网络地址转换的设计与实现

Design and Implementation of Train Network Address Translation(R-NAT)Based on FPGA

列车网络地址转换(R-NAT)是实时以太网的核心技术。文章提出了一种基于FPGA的R-NAT的实现方法,设计了相应的FPGA程序,经过仿真及实际测试验证,R-NAT功能正常,转发性能达到线速度要求,远超嵌入式CPU。

R-NAT is the core technology of real-time Ethernet.In this paper,a method of R-NAT implementation based on FPGA is proposed,and the corresponding program of FPGA is designed.The simulation and actual test results showes that R-NAT implemented by FPGA had correct function and can process Ethernet packets at line speed.The performance of Ethernet packet processing is far exceeding the embedded CPU.