By Topic

Impact of ATM ABR control on the performance of TCP-Tahoe and TCP-Reno

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Boning Feng ; Dept. of Telematics, Norwegian Univ. of Sci., Trondheim, Norway ; Ghosal, D. ; Kannappan, N.

We study the effect of ATM ABR control on the throughput and fairness of running large unidirectional file transfer applications on TCP-Tahoe and TCP-Reno with a single bottleneck ATM link. The various ATM ABR control are characterized by different switch queue threshold (Qth) values which define when the bottleneck link declares congestion and starts marking RM cells and, the reduction factor (RDF) values which define how quickly the source reduces its cell transmission rate. The key results of this study are the following. First, our results show that TCP-Reno is slightly better than TCP-Tahoe in terms of the throughput when the round-trip delay is short, specially with a large packet size. Second, with a medium round-trip delay (1 ms), TCP-Reno gives a better throughput with long packets, while TCP-Tahoe performs better with short packets. Third, when the round-trip delay is long (30 ms), TCP-Tahoe clearly offers higher throughput than TCP-Reno. TCP-Tahoe consistently outperforms TCP-Reno in terms of fairness. Fourth, for a short or medium round-trip delay, tight ABR control (specially with lower RDF) results in higher throughput than loose control; while the opposite is true for a long round-trip delay. Finally, a strong positive correlation between poor throughput and poor fairness is only valid for short and medium round-trip delays for TCP-Tahoe

Published in:

Global Telecommunications Conference, 1997. GLOBECOM '97., IEEE  (Volume:3 )

Date of Conference:

3-8 Nov 1997