NDLI: Two-way TCP traffic over ATM: effects and analysis

Content Provider	IEEE Xplore Digital Library
Author	Kalampoukas, L. Varma, A. Ramakrishnan, K.K.
Copyright Year	1997
Description	Author affiliation: Dept. of Comput. Eng., California Univ., Santa Cruz, CA, USA (Kalampoukas, L.)
Abstract	We examine the performance of bidirectional TCP/IP connections over asynchronous transfer mode (ATM) networks using the available bit rate (ABR) service. The problem of "ack-compression" re-appears, although the queues are primarily at the end-systems. We further the understanding of the problem by quantitatively analyzing the periodic bursty behavior of the source IP queue. We are able to predict the peak values for the queue and arrive at a simple robust predictor for the degraded throughput, applicable for relatively general situations. The degradation in throughput due to bidirectional traffic can be significant. For example, even in the simple case of symmetrical connections with adequate window sizes, the throughput of each connection is only 66.67% of that under one-way traffic. We validate our analysis using simulation, where the ATM network uses the explicit rate option. We show that the analysis predicts the behavior of the queue and the throughput degradation. We observe the need to separate the flow of acknowledgments and data for the bidirectional TCP connection and for inter-leaving their processing at the end-systems to overcome the problem of ack compression.
Starting Page	1227
Ending Page	1236
File Size	1078139
Page Count	10
File Format	PDF
ISBN	0818677805
ISSN	0743166X
DOI	10.1109/INFCOM.1997.631148
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-04-07
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Asynchronous transfer mode Throughput Telecommunication traffic Traffic control Degradation TCPIP Queueing analysis Bit rate Robustness Analytical models
Content Type	Text
Resource Type	Article
Subject	Computer Science Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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