TCP Vegas-A: Improving the Performance of TCP Vegas

Authors:
K. N. Srijith;Lillykutty Jacob;A. L. Ananda
Affiliations:
Communication and Internet Research Lab, Department of Computer Science, School of Computing, National University of Singapore, 3 Science Drive 2, Lower Kent Ridge Road, Singapore, Singapore 11754 ...;Communication and Internet Research Lab, Department of Computer Science, School of Computing, National University of Singapore, 3 Science Drive 2, Lower Kent Ridge Road, Singapore, Singapore 11754 ...;Communication and Internet Research Lab, Department of Computer Science, School of Computing, National University of Singapore, 3 Science Drive 2, Lower Kent Ridge Road, Singapore, Singapore 11754 ...
Venue:
Computer Communications
Year:
2005

Citing 10
Cited 2

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Proceedings of the 2001 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Enabling Compatibility Between TCP Reno and TCP Vegas

SAINT '03 Proceedings of the 2003 Symposium on Applications and the Internet
Analysis and improvement of fairness between TCP Reno and Vegas for deployment of TCP Vegas to the Internet

ICNP '00 Proceedings of the 2000 International Conference on Network Protocols
A Case for TCP Vegas in High-Performance Computational Grids

HPDC '01 Proceedings of the 10th IEEE International Symposium on High Performance Distributed Computing
Transport protocols for Internet-compatible satellite networks

IEEE Journal on Selected Areas in Communications
TCP Vegas: end to end congestion avoidance on a global Internet

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CODE TCP: A competitive delay-based TCP

Computer Communications
Review: An initiative for a classified bibliography on TCP/IP congestion control

Journal of Network and Computer Applications

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Abstract

While it has been shown that TCP Vegas provides better performance compared to TCP Reno, studies have identified various issues associated with the protocol. We propose modifications to the congestion avoidance mechanism of the TCP Vegas to overcome these limitations. Unlike the solutions proposed in the past, our solution, named TCP Vegas-A, is neither dependent on optimising any critical parameter values nor on the buffer management scheme implemented at the routers and hence can be implemented solely at the end host. Our simulation experiments over wired as well as over geosynchronous and lower earth orbit satellite links show that TCP Vegas-A is able to overcome several of the identified problems-it can obtain a fairer share of the network bandwidth in wired and satellite scenarios, tackle rerouting issues, rectify Vegas's bias against higher bandwidth flows and prevail over fluctuating RTT conditions of a lower earth orbit satellite link. At the same time, Vegas-A is able to preserve the unique properties of Vegas that had made it a noteworthy protocol.