基于流的跨层并发多路径转发算法  

Flow-Based Cross-Layer Forwarding Algorithm for Concurrent Multipath

作　　者：韩来权[1] 汪晋宽[1] 王翠荣[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2009年第3期357-360,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(06273078);河北省科技厅博士基金资助项目(55470130-3)

摘　　要：在分析流关系和转发粒度的基础上,通过实验比较研究了单路径转发的缺点和随机多路径转发技术的不足,结合跨层路由的思想,提出了一个基于流的并发多路径跨层转发算法.该算法在IP层的转发模块中对TCP层的报文首部进行跨层操作,计算流的哈希值,有效地解决了并发多路径传输的乱序问题.NS2仿真实验性能对比分析表明,本算法获得了较高的转发性能,提高了带宽利用率.With the rapid proliferation of computer virtualization, emerging programmable router and increasingly improved quality of service（QoS） requirement, the concurrent multipath （CMP） becomes a hotspot in research field and gets increasing interest recently. Based on the analysis of flow relationship and forwarding granularity, a flow-based CMP cross-layer forwarding （FCCF） algorithm is proposed, and compared with the technologies of single-path forwarding and random CMP forwarding. The algorithm is able to process TCP header in IP network layer and compute the Hash value of the flow to solve the disorder problem of CMP. NS2 simulation revealed that the algorithm comes up to a better forwarding performance with higher bandwidth utilization.

关 键 词：并发多路径 跨层转发 可编程路由器 流关系 转发粒度 

分 类 号：TP393.03[自动化与计算机技术—计算机应用技术]