ATM Qos Experiments Using TCP Applications
ATM Qos Experiments Using TCP Applications

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-08-20

Total Pages: 30

ISBN-13: 9781721259090

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Asynchronous Transfer Mode (ATM) Quality of Service (QoS) experiments using the Transmission Control Protocol/Internet Protocol (TCP/IP) were performed for various link delays. The link delay was set to emulate a Wide Area Network (WAN) and a Satellite Link. The purpose of these experiments was to evaluate the ATM QoS requirements for applications that utilize advance TCP/IP protocols implemented with large windows and Selective ACKnowledgements (SACK). The effects of cell error, cell loss, and random bit errors on throughput were reported. The detailed test plan and test results are presented herein. Frantz, Brian D. and Ivancic, William D. Glenn Research Center NASA/TM-2001-209644, E-11990, NAS 1.15:209644

Experimental and Simulation Performance Results of TCP/IP Over High-Speed ATM Over ACTS.
Experimental and Simulation Performance Results of TCP/IP Over High-Speed ATM Over ACTS.

Author: Charalambous Charalambos

Publisher:

Published: 1997

Total Pages: 8

ISBN-13:

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To assist in the design and understanding of future global networks, this paper describes the practical and simulation experiences gained from a TCP/IP on ATM network over a high speed satellite link and presents performance comparison studies of such networks with the same host/traffic configurations over local area (LAN) and wide area (WAN) networks. It was found that the satellite systems deliver performance similar to the terrestrial networks regardless their path latencies in cases where the communication channels exhibit a low bit error rate (BER). NASA's Advanced Communications Technology Satellite (ACTS), with its special characteristics and high data rate satellite channels, and the ACTS ATM Internetwork (AAI) were used in these experiments to deliver broadband traffic. Network performance tests were carried out using application-level software (ttcp, Netspec) on OC-3 and OC-12 ATM satellite links.

Open Distributed Processing and Distributed Platforms
Open Distributed Processing and Distributed Platforms

Author: Jerome Rolia

Publisher: Springer

Published: 2016-01-09

Total Pages: 325

ISBN-13: 0387351884

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Advances in computer networking have allowed computer systems across the world to be interconnected. Open Distributed Processing (ODP) systems are those that support heterogenous distributed applications both within and between autonomous organizations. Many challenges must be overcome before ODP systems can be fully realized. This book describes the recent advances in the theory and practice of developing, deploying and managing open distributed systems. Applications of these systems include but are not limited to telecommunication, medical and large scale transaction processing and electronic commerce systems. All of these are currently developed on distributed platforms. For anybody working in industry or research in this field, Open Distributed Processing and Distributed Platforms will prove an invaluable text.

Y2K in Orbit
Y2K in Orbit

Author: United States. Congress. House. Committee on Science. Subcommittee on Technology

Publisher:

Published: 1999

Total Pages: 452

ISBN-13:

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An Empirical Study of TCP/IP Performance Over ATM.
An Empirical Study of TCP/IP Performance Over ATM.

Author: I. Sebuektekin

Publisher:

Published: 1996

Total Pages: 21

ISBN-13:

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This paper outlines some basic performance characteristics of the Transmission Control Protocol / Internet Protocol (TCP/IP) over Asynchronous Transfer Mode (ATM). It also discusses a few solutions to assure acceptable TCP/IP performance over ATM which are implemented by the industry the during the last couple of years. The conclusions in this paper are based on empirical TCP/IP performance test results collected on a DS3 ATM research testbed, architected with commercially available IP and ATM equipment. TCP/IP performance can vary widely and suffer significantly over ATM networks with large Bandwidth Delay products. First, it is essential that the TCP window size matches the Bandwidth Delay product of the end-to-end connection to fully utilize the bandwidth provided by the broadband network. Even if the window size meets this criteria, TCP performance can still be unacceptable, especially if the buffering within the ATM network is limited. A single limited-buffer bottleneck is sufficient to degrade the performance of a TCP connection when multiple traffic sources congest the bottleneck resource, such as in ATM networks with small buffer switches. One approach to assure acceptable TCP/IP performance is to limit the data rate into the bottleneck resource by exercising rate control at the entry to the ATM network. A better solution is to provide sufficient buffering within the ATM network.

Achieving High Throughput for Data Transfer Over ATM Networks
Achieving High Throughput for Data Transfer Over ATM Networks

Author: Marjory J. Johnson

Publisher:

Published: 1996

Total Pages: 14

ISBN-13:

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Abstract: "File-transfer rates for ftp are often reported to be relatively slow, compared to the raw bandwidth available in emerging gigabit networks. While a major bottleneck is disk I/O, protocol issues impact performance as well. Ftp was developed and optmized for use over the TCP/IP protocol stack of the Internet. However, TCP has been shown to run inefficiently over ATM. In an effort to maximize network throughput, data-transfer protocols can be developed to run over UDP or directly over IP, rather than over TCP. If error-free transmission is required, techniques for achieving reliable transmission can be included as part of the transfer protocol. However, selected image-processing applications can tolerate a low level of errors in images that are transmitted over a network. In this paper we report on experimental work to develop a high-throughput protocol for unreliable data transfer over ATM networks. We attempt to maximize throughput by keeping the communications pipe full, but still keep packet loss under five percent. We use the Bay Area Gigabit Network Testbed as our experimental platform."