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Design of TCP Protocol with Low Priority for Improving TCP Performance

S. Malarvizhi, Dr. P. Madeshwaran

Abstract


Service prioritization among different traffic classes is an important goal for the Internet. In this paper, we devise a new distributed algorithm to realize a low-priority service from the network endpoints. To this end, we develop TCP Low Priority(TCP-LP), a distributed algorithm whose goal is to utilize only the excess network bandwidth. the key mechanisms unique to TCP-LP congestion control are the use of one-way packet delays for early congestion indications and a TCP transparent congestion avoidance policy. the simulation results show that 1) Multiple TCP-LP flows share excess bandwidth fairly; 2) Substantial amounts of excess bandwidth are available to the low-priority class, even in the presence of “greedy” TCP flows; 3) Despite their low-priority nature, TCP-LP flows are able to utilize significant amounts of available bandwidth in a wide-area network environment.

Keywords


TCP, Bandwidth, Service Prioritization, TCP-LP, TCP-transparency.

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References


R. Jain. A delay based approach for congestion avoidance in interconnected heterogeneous computer networks. ACM Computer Comm. Review, 19(5):56–71, Oct. 1989.

V. Jacobson, R. Braden, and D. Borman. TCP extensions for high performance, May 1992. Internet RFC 1323.

V. Jacobson, R. Braden, and D. Borman. TCP extensions for high performance, May 1992. Internet RFC 1323.

D. D. Clark and W. Fang. Explicit allocation of best-effort packet delivery service. IEEE/ACM Transactions on Networking, 6(4):362–373, Aug. 1998.

K. Ramakrishnan and S. Floyd. A proposal to add explicit congestion notification to IP, January 1999. Internet RFC 2481.

Pasztor and D. Veitch. High precision active probing for Internet measurement. In Proceedings of INET ’01, Stockholm, Sweden, 2001.

V. Firoiu, J.-Y. Le Boudec, D. Towsley, and Z.-L. Zhang. Theories and models for Internet quality of service. IEEE, 90(9):1565–1591, Sept. 2002.

S. Floyd and V. Jacobson. Random early detection gateways for congestion avoidance. IEEE/ACM Transactions on Networking, 1(4):397-413, 2003.

D. Bansal, H. Balakrishnan, S. Floyd, and S. Shenker. Dynamic behavior of slowly –response congestion control algorithms. In Proceedings of ACM SIGCOMM ’01, San Diego, CA, August 2001.

A. Feldmann, A. Gilbert, P. Huang, and W. Willinger. Dynamics of IP traffic: A study of the role of variability and the impact of control. In Proceedings of ACM SIGCOMM ’99, Vancouver, British Columbia, , September 1999.


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