A survey on TCP-friendly congestion control

  • Authors:
  • J. Widmer;R. Denda;M. Mauve

  • Affiliations:
  • Praktische Inf. IV, Mannheim Univ.;-;-

  • Venue:
  • IEEE Network: The Magazine of Global Internetworking
  • Year:
  • 2001

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Abstract

New trends in communication, in particular the deployment of multicast and real-time audio/video streaming applications, are likely to increase the percentage of non-TCP traffic in the Internet. These applications rarely perform congestion control in a TCP-friendly manner; they do not share the available bandwidth fairly with applications built on TCP, such as Web browsers, FTP, or e-mail clients. The Internet community strongly fears that the current evolution could lead to congestion collapse and starvation of TCP traffic. For this reason, TCP-friendly protocols are being developed that behave fairly with respect to coexistent TCP flows. We present a survey of current approaches to TCP friendliness and discuss their characteristics. Both unicast and multicast congestion control protocols are examined, and an evaluation of the different approaches is presented