基于FPGA的双网冗余以太网控制器的设计与实现

Design of Ethernet-controllers with Real-time Switching between Nets in FPGA

对计算机通信中以太网控制器的双冗余备份技术进行阐述,提出在利用FPGA技术设计的网络控制器内实现网络实时切换功能,不但在物理层设备出现故障时能进行实时切换,而且在网络接收过程中数据包出错时也能进行实时切换。重点介绍了实时切换功能以太网控制器的工作原理、关键技术以及实现技术,最后对该双网实时切换功能的仿真波形进行了分析。

The paper expatiates the redundance-backup technology of the network cards in the net communications,and presents a scheme to design the chip of real-time switch in the ethernet controllers with micro-electronics technology.This implements not only the function of real-time switch when net equipment is trouble in physics layer,implements but also the function of real-time switch when net datum which are taking over is wrong in physics layer. The paper emphatically introduces the principle、the key-technology...