An analysis of longitudinal TCP passive measurements

  • Authors:
  • Kensuke Fukuda

  • Affiliations:
  • National Institute of Informatics, Japan / PRESTO JST

  • Venue:
  • TMA'11 Proceedings of the Third international conference on Traffic monitoring and analysis
  • Year:
  • 2011

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Abstract

This paper reports on the longitudinal dynamics of TCP flows at an international backbone link over the period from 2001 to 2010. The dataset was a collection of traffic traces called MAWI data consisting of daily 15min pcap traffic trace measured at a trans-pacific link between Japan and the US. The environment of the measurement link has changed in several aspects (i.e., congestion, link upgrade, application). The main findings of the paper are as follows. (1) A comparison of the AS-level delays between 2001 and 2010 shows that the mean delay decreased in 55% of ASes, but the median value increased. Moreover, largely inefficient paths disappeared. (2) The deployment of TCP SACK increased from 10% to 90% over the course of 10 years. On the other hand, the window scale and timestamp options remained under-deployed (less than 50%).