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Web Traffic Analysis according to the Link-down Duration of TCP and SCTP

링크다운 시간에 따른 TCP와 SCTP의 웹 트래픽 분석

  • 최용운 (한국교원대학교 기술교육과) ;
  • 조광문 (목포대학교 전자상거래) ;
  • 이용진 (한국교원대학교 기술교육과)
  • Received : 2009.11.20
  • Accepted : 2010.01.08
  • Published : 2010.03.28

Abstract

The most popular world wide web traffic in the Internet uses TCP as the transport layer protocol. Since TCP utilizes the single path, it can not communicate with the correspondent host during the link-down. On the other hand, SCTP can still communicate with the other SCTP entity by using alternate path even while the primary path is down. Most of previous studies have conducted the performance comparison research between TCP and SCTP by using typical file transfer. Since web traffic with self-similarity is characterized by the packet inter-arrival times and shape parameter affecting the size of web file in the Pareto distribution, it is necessary to perform the experiments considering these parameters. This paper aims to compare the throughput between TCP and SCTP while varying parameters reflecting the web traffic characteristics in link-down environment. Experimental results for web traffic using NS-2 simulator show that the throughput of SCTP using multi-homing is better than that of TCP. Simulation also shows that TCP is more affected than SCTP by mean inter-arrival and shape parameters with regard to the web traffic. These results can be applied to estimate the performance variation of web traffic due to the duration of link-down.

Keywords

Link-down;Web Traffic;SCTP;TCP;Pareto Distribution

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