通信学报 ›› 2013, Vol. 34 ›› Issue (Z2): 23-26.doi: 10.3969/j.issn.1000-436x.2013.Z2.006

• 网络工程 • 上一篇    下一篇

基于实测流量的网际分组丢失率分析

米婷1,2,丁伟1,2   

  1. 1 东南大学 计算机科学与工程学院,江苏 南京 211189
    2 江苏省计算机网络技术重点实验室,江苏 南京 211189
  • 出版日期:2013-12-25 发布日期:2017-06-16
  • 基金资助:
    国家重点基础研究发展计划(“973计划”)基金资助项目

Analysis of packet loss rate based on the measured traffic

Ting MI1,2,Wei DING1,2   

  1. 1 School of Computer Science and Engineering,Southeast University,Nanjing 211189,China
    2 The Key Laboratory of Computer Network Technology,Nanjing 2l1189,China
  • Online:2013-12-25 Published:2017-06-16
  • Supported by:
    The National Basic Research Program of China (973 Program)

摘要:

分组丢失率是评价网络性能的一个重要指标。提出了一种利用完整TCP流计算实测数据中分组丢失率的方法,井基于实测数据对 CERNET 江苏省网与外部不同网络分区的分组丢失率进行分析。算法给出了基于实测数据的分组丢失率包括首次分组丢失率pfl、整体分组丢失率psl和重传率prp3个测度。统计分析表明,在绝大多数情况下,pfl比psl小,而prp比pfl和psl明显要高,验证了分组丢失对网络性能的影响以及重传率明显比分组丢失率高。

关键词: 分组丢失率, 重传率, 实测流量, TCP流, 分区实验

Abstract:

The packet loss rate is one of key indicators to evaluate the performance of network.A method for calculating packet loss rate in the measured data based on the intact TCP flows was presented.Based on the measured data,the packet loss rate of Jiangsu Province in CERNET network and different partitions outside was analysed.The algorithm gives the packet loss rate including first packet loss rate pfl,overall packet loss rate psland retransmission rate prp.Through statistical analysis,pflis smaller than pslin the vast majority of cases,and prpis significantly higher than pfland psl,which proves the impact of packet loss on the performance of network,and retransmission rate is obviously higher than packet loss rate.

Key words: packet loss rate, retransmission rate, measured traffic, TCP flow, partition experiment

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