具有路由功能的光纤链路接口卡在机群系统中的应用

Design and Implementation of HighSpeed OptitalFiber RingNetwork Interfate Card with Retransmiting Function in Cluster

用现场可编程门阵列(FPGA)实现了一种应用在环形网络结构机群系统中的高带宽、低延迟和具有转发路由功能的专用光纤互连环形网络链路接口卡,在硬件上即实现了光纤环网中链路数据包的地址判断、路由和转发,使该链路接口卡不仅工作于链路层,还工作于网络层.在四结点的环形网络机群系统中和LINUX操作系统环境下,分别测试了软件转发路由时间和利用该链路接口卡硬件路由的时间,通信延迟平均降低了45.6%,提高了机群系统中结点间的有效通信带宽.

In this paper,a network interface card for computer cluster has been designed and implemented by field programmable gate array (FPGA) in opticalfiber interconnection ring network.The network interface card has high bandwidth,low latency and the function of retransmning data packet.In opticalfiber ring network,the address judgement,routing and retransmiting of data packet have been achieved by hardware.The network interface card is working on the data link layer and the network layer.In four node Cluster with LINUX operation system,time of software routing and hardware routing have tested.The 1atency decreased 45.6% on average when the data packages were routed by hardware.The performance of communication between the node in cluster has been improved. 