光纤通道端口状态机设计

摘要

In a fiber channel (FC) protocol environment, the FC port (FC_Port) is the basic communication unit, for that the link can send and receive FC data frames only when the port is in the active state. Based on the analysis of the FC_Port state transition principle and referred to FC-FS-4 protocol, a design method of FC_Port state machine based on FPGA is proposed. Experiments show that the design meets the requirements of the protocol and has the functions of link error detection and port traffic management as well as recovering the link faults encountered by the FC port during data transmission.%在光纤通道(FC)协议环境中,FC端口(FC_Port)是基本的通信单元,只有端口处于激活状态时,链路才能进行FC数据帧的收发.在对FC_Port状态转换原理进行分析的基础上,参照FC-FS-4协议,提出了一种基于FPGA的FC_Port状态机设计方法.实验表明:该设计满足协议的规定,具有链路错误检测和端口流量管理的功能,能够对FC端口在数据传输中遇到的链路故障进行恢复.