Real-time identification of different TCP versions

  • Authors:
  • Junpei Oshio;Shingo Ata;Ikuo Oka

  • Affiliations:
  • Graduate School of Engineering, Osaka City University, Osaka, Japan;Graduate School of Engineering, Osaka City University, Osaka, Japan;Graduate School of Engineering, Osaka City University, Osaka, Japan

  • Venue:
  • APNOMS'07 Proceedings of the 10th Asia-Pacific conference on Network Operations and Management Symposium: managing next generation networks and services
  • Year:
  • 2007

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Abstract

When multiple flows using different versions of TCP exist together on the network, they are influenced seriously between each other. One of methods to overcome this problem is to control such flows individually by identifying the TCP versions of each flow. Thus, this process needs a method to identify online which TCP version is used for each flow. In this paper, we first focus on the increase speed of the congestion window in two different versions of TCP, which are TCP Reno and HSTCP (High Speed TCP). We also show that increasing rate of congestion window has remarkable characteristics in each TCP version. We then propose a method to identify flow by using the characteristics. We show that TCP Reno and HSTCP can be completely identified by using our proposed method.