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网络非对称链路带宽的测量 被引量：3

Measuring Asymmetric Link Bandwidth
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摘要 研究了数据分组在IP网络中传输时RTT时延的组成,给出了RTT时延与分组长度的线性表达式。分析了传统利用UDP测量分组RTT时延与测量分组长度的线性关系进行链路带宽测量的算法,针对该测量算法不能对非对称链路带宽进行测量的缺陷,提出了一种新的非对称链路带宽测量算法Asy_pathchar。同时使UDP报文和ICMP报文作为测量报文,Asy_pathchar能够对测量分组所经过的每一跳非对称链路的带宽进行测量,实验结果验证了算法的正确性。 By studying the construction of the RTT latency, alinear expression between the RTT latency and the packet size is presented. Then pathchar,traditional bandwidth measurement algorithm,based on the relationship between the RTT latency and the packet size, is analyzed particularly. But pathchar can not measure the asymmetric link bandwidth. To solve this problem, Asy_pathchar, a new algorithm, is put forward, which can measure each hop抯 link bandwidth in both directions in an IP network using the UDP packet and ICMP packet.Finally an experiment is given to validate the new algorithm.
作者 赵金 陈鸣
机构地区 解放军理工大学通信工程学院
出处 《电子科技大学学报》 EI CAS CSCD 北大核心 2002年第4期404-408,共5页 Journal of University of Electronic Science and Technology of China
基金 国家863高科技项目
关键词 网络 非对称链路 链路带宽 带宽测量 RTT时延 link bandwidth bandwidth measurement asymmetric link RTT latency
分类号 TP393 [自动化与计算机技术—计算机应用技术]
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参考文献5

  • 1[1]Jacobson V. Pathchar-A tool to infer characteristics of internet paths. ftp://ftp.ee.lbl.gov/pathchar/, April 1997
  • 2[2]Downey A. Clink-A tool for estimating internet link characteristics. http://rocky.wellesley.edu/downey/clink/, June 1999
  • 3[3]Mah B A. Pchar-A tool for measuring internet path characteristics. http://www.employees.org/bmah/Software/ pchar/, June 2000
  • 4[4]Downey A. Using pathchar to estimate internet link characteristics. ACM SIGCOMM, 1999: 241~250
  • 5[5]Paxson V. Measurements and analysis of end-to-end internet dynamics: [PhD thesis]. Berkeley: niversity of California, 1997

同被引文献29

  • 1宋丽华,陈鸣,仇小锋.网络流量特征对排队性能影响的仿真分析与比较[J].系统仿真学报,2005,17(1):25-28. 被引量：5
  • 2王洪波,林宇,金跃辉,程时端.一个消除单向时延测量中时钟频差和时钟重置的新方法[J].电子学报,2005,33(4):584-589. 被引量：7
  • 3Jin G,Tierney B.Netest:a tool to measure maximum burst size, available bandwidth and achievable throughput[C]//LBNL 48350: Proceedings of the 2003 International Conference on Information Technology,Newark,New Jersey,2003.
  • 4Lai K,Baker M.Nettimer:a tool for measuring bottleneck link bandwidth[C]//USITS 2001,San Francisco,USA,2001.
  • 5Jin G,Tierney B.System capability effects on algorithms for network bandwidth measurement[C]//LBNL 48556:Proceedings of the Internet Measurement Conference, Miami, Florida, 2003.
  • 6Jain M,Dovrolis C.Pathload:a measurement tool for end-to-end available bandwidth[C]//Proceedings of Passive and Active Measurements(PAM) Workshop,2002.
  • 7Mah B A.Pchar-a tool for measuring internet path characteristics[EB/OL].( 2002-06).http://www.employees.org/bmah/software/pchar.
  • 8Pasztor A,Veitch D.The packet size dependence of packet pair like methods[C]//IEEE/IFIP International Workshop on Quality of Service ( IWQoS ), 2002.
  • 9Chen L J, Sun T, Yang Guang, et al. End-to-end Asymmetric Link Capacity Estimation[C]//Proc. of IFIP Networking'05. Waterloo, Canada: [s. n.], 2005.
  • 10Jiang Wenyu. Detecting and Measuring Asymmetric Links in an IP Network[C]//Proc. of IEEE Global Communications Conference.Rio de Janeireo, Brazil: [s. n.], 1999: 1727-1731.

引证文献3

二级引证文献1

电子科技大学学报
2002年 第4期

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