摘要
Internet中的交换机面临着高速交换和提供QoS保证的双重挑战,前者要求交换机的缓存以线速工作,后者要求交换机能完全模仿输出队列交换机。目前交叉点缓存交换机仿真输出队列交换机的方案需要交换机内部加速2倍,对硬件实现要求较高。该文利用双端口技术,提出了一种新型的交叉点缓存交换机结构,理论分析说明,该变长分组交换机在无需内部加速的情况下能够仿真输出队列交换机,并且交叉点缓存的需求是有下界的,从而表明该交换结构适合高速交换。
Today,Internet is facing two challenges simultaneously： the need of a higher switching speed and provision of a QoS guarantee.The first requires that the buffers in switch must work at a line rate and the second requires that switch should mimic output queued switch.In this paper,a new buffered crossbar architecture with duplicated ports is presented.Theoretical analyzing demonstrate that the new fabric can not only mimic output queued switch without speedup,but also provide the low bound of crosspoint buffer.This shows that the proposed fabric is more appropriate for high performance switches.
出处
《电子与信息学报》
EI
CSCD
北大核心
2011年第8期1949-1954,共6页
Journal of Electronics & Information Technology
基金
江苏省高校自然科学基础研究重大项目(10KJA510037)
南京邮电大学引进人才项目(NY209002)资助课题
关键词
交叉点缓存交换机
输出队列交换机
调度算法
虚拟输出队列
分组模式调度
Combined Input and Crosspoint-Queued（CICQ） switch
Output-queued switch
Scheduling algorithm
Virtual output queue
Packet-mode scheduling
