Take a look at the new version of this page: [ beta version ]. Tell us what you think.

ABSTRACT

Consumers or administrators of small business networks usually cannot directly configure the link which connects their network to their Internet provider. The link setup often provides a sub-optimal configuration for end users' traffic patterns and, at best, favors bulk transfers. We introduce a method of imposing desired active queue management behavior on an upstream queue without requiring administrative control over the queue. We achieve this by observing various externally measurable characteristics of the queue's behavior and then manipulating congestion-controlled traffic through standard feedback channels such as packet drops or ECN notifications. This technique can be directly applied to improve the quality of VoIP connections sharing a bottleneck link with multiple TCP connections. Our approach performs comparably to a RED policy applied on the remote queue, without dropping VoIP packets. The complexity of our approach is independent of the number of connections, and hence it can be implemented on a network gateway without adding noticeable processing overhead.

REFERENCES

• 1: H. Balakrishnan , S. Seshan, The Congestion Manager, RFC Editor, 2001
• 2: R. Braden, Requirements for Internet Hosts - Communication Layers, RFC Editor, 1989
• 3: J. Cao, W. Cleveland, Y. Gao, K. Jeffay, F. Smith, and M. Weigle. Stochastic Models for Generating Synthetic HTTP Source Traffic. In IEEE INFOCOM, 2004.
• 4: Sally Floyd , Van Jacobson, Random early detection gateways for congestion avoidance, IEEE/ACM Transactions on Networking (TON), v.1 n.4, p.397-413, Aug. 1993 [doi>10.1109/90.251892]
• 5: H. Schulzrinne , S. Casner , R. Frederick , V. Jacobson, RTP: A Transport Protocol for Real-Time Applications, RFC Editor, 2003
• 6: Hao Jiang , Constantinos Dovrolis, Passive estimation of TCP round-trip times, ACM SIGCOMM Computer Communication Review, v.32 n.3, p.75-88, July 2002 [doi>10.1145/571697.571725]
• 7: K. Ramakrishnan , S. Floyd , D. Black, The Addition of Explicit Congestion Notification (ECN) to IP, RFC Editor, 2001
• 8: Lampros Kalampoukas , Anujan Varma , K. K. Ramakrishnan, Explicit window adaptation: a method to enhance TCP performance, IEEE/ACM Transactions on Networking (TON), v.10 n.3, p.338-350, June 2002 [doi>10.1109/TNET.2002.1012366]
• 9: Peter Key , Laurent Massoulié , Bing Wang, Emulating low-priority transport at the application layer: a background transfer service, ACM SIGMETRICS Performance Evaluation Review, v.32 n.1, June 2004
• 10: P. Mehra, A. Zakhor, and C. De Vleeschouwer. Receiver-driven bandwidth sharing for TCP. In IEEE INFOCOM, 2003.
• 11: M. Spencer, B. Capouch, E. Guy, F. Millera, and K. Shumard. IAX2: Inter-Asterisk eXchange Version 2, 2006. IETF Internet-Draft.
• 12: N. T. Spring, M. Chesire, M. Berryman, V. Sahasranaman, T. Anderson, and B. N. Bershad. Receiver based management of low bandwidth access links. In IEEE INFOCOM, pages 245--254, 2000.
• 13: Various. The Network Simulator --- ns-2. http://www.isi.edu/nsnam/ns/index.html.

INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.4 Distributed Systems
          Subjects: Network operating systems

Additional Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.2 Network Protocols

          Nouns: TCP/IP

  D. Software
  D.4 OPERATING SYSTEMS
      D.4.1 Process Management