摘要
多级多平面分组交换结构MPMS以其优异的可扩展性正成为新一代交换路由设备的交换核心。但MPMS结构中的调度算法却往往比较复杂。该文提出了一种MPMS结构的带宽保证型调度算法BG-CRRD,该算法将分组流预留带宽信息引入判决机制,仿真实验表明,BG-CRRD在Bernoulli均匀流量条件下可以获得100%的吞吐率,在非均匀流量条件极坏情况下获得高达92%的吞吐率,在过载情况下根据预定带宽分配输出链路带宽。
The multiple-plane and multiple-stage (MPMS) switching fabric has attractive scalability features that make it appealing as an alternative for scalable routers. However, scheduling packets in MPMS fabric is complex. In this paper, a novel scheduling scheme is proposed with bandwidth guarantees for the MPMS fabric. It can deliver 100% throughput under Bernoulli uniform traffic, 92% throughput in the worst case under nonuniform traffic and allocate bandwidth according to reserved bandwidth under overloaded traffic.
出处
《电子与信息学报》
EI
CSCD
北大核心
2009年第6期1475-1478,共4页
Journal of Electronics & Information Technology
基金
国家973重点基础研究发展计划(2007CB307102)资助课题
关键词
调度算法
多级多平面交换结构
并行轮转匹配
iSLIP
带宽保证
Scheduling scheme
Multiple-Plane and Multiple-Stage (MPMS)
Concurrent Round Robin Dispatching (CRRD)
iSLIP
Bandwidth guarantee