摘要
交换机的交换结构、缓存方式和多端口读写并存等架构实现方式决定了交换机的性能。随着交换端口数目的增加与端口速率的提升,交换机如何提高多端口数据转发性能是一个值得研究的课题。为满足多端口数据转发、数据交换内部无阻塞的需求,提出一种基于Crossbar结构的分布式共享缓存交换机架构,首先,采用了一种基于Crossbar全相连的输入缓存结构,以满足多端口数据的无阻塞输入需求;其次,在交换结构上创新性地采用了分布式共享缓存方式,以提高数据交换速率;最后,在FPGA开发板上对设计进行了仿真和验证。结果表明,相比传统交换机,提出的分布式共享缓存的多端口交换机架构支持大容量数据转发,能有效提升数据传输带宽。
The performance of a switch is determined by its architectural implementations,such as the switching fabric,caching mechanism,and concurrent multi-port read/write operations.With the increase in the number of switch ports and port rates,how to enhance the multi-port data forwarding performance of switches has become a topic worthy of research.To meet the demands of multi-port data forwarding and non-blocking internal data exchanges,this paper proposes a distributed shared buffer architecture for Ethernet switches based on a Crossbar structure.First,it adopts a fully connected Crossbar-based input caching structure to ensure non-blocking input for multi-port data.Second,the switching fabric innovatively employs a distributed shared caching approach to improve data exchange rates.Finally,the design is simulated and verified on an FPGA development board.The results demonstrate that,compared to traditional switches,the proposed multi-port switch architecture with parallel read/write operations supports high-capacity data forwarding and effectively enhances data transmission bandwidth.
作者
杨乾明
邵靖杰
曾聘
袁梦
宋卓秦
邓秋严
张剑锋
王勇
YANG Qianming;SHAO Jingjie;ZENG Pin;YUAN Meng;SONG Zhuoqin;DENG Qiuyan;ZHANG Jianfeng;WANG Yong(College of Computer Science and Technology,National University of Defense Technology,Changsha 410073,China)
出处
《计算机工程与科学》
北大核心
2025年第6期951-957,共7页
Computer Engineering & Science
基金
高性能计算国家实验室项目(202201-16)。
关键词
多端口
交叉开关
分布式共享缓存
读写缓存并行
multi-port
Crossbar
distributed shared buffer
read/write buffer parallelism
作者简介
杨乾明(1984-),男,湖南邵阳人,博士,助理研究员,CCF会员(14543M),研究方向为计算机系统结构、微处理器设计和集成电路设计。E-mail:yqm21249@nudt.edu.cn;通信作者:王勇,wangyong@nudt.edu.cn,通信地址:410073湖南省长沙市国防科技大学计算机学院。
