NASA LogoNTRSNTRS - NASA Technical Reports ServerSearchmore_vertCollectionsAboutNewsHelpLogin Back to ResultsACTS 118x Final Report High-Speed TCP Interoperability TestingWith the recent explosion of the Internet and the enormous business opportunities available to communication system providers, great interest has developed in improving the efficiency of data transfer using the Transmission Control Protocol (TCP) of the Internet Protocol (IP) suite. The satellite system providers are interested in solving TCP efficiency problems associated with long delays and error-prone links. Similarly, the terrestrial community is interested in solving TCP problems over high-bandwidth links. Whereas the wireless community is interested in improving TCP performance over bandwidth constrained, error-prone links. NASA realized that solutions had already been proposed for most of the problems associated with efficient data transfer over large bandwidth-delay links (which include satellite links). The solutions are detailed in various Internet Engineering Task Force (IETF) Request for Comments (RFCs). Unfortunately, most of these solutions had not been tested at high-speed (155+ Mbps). Therefore, the NASA's ACTS experiments program initiated a series of TCP experiments to demonstrate scalability of TCP/IP and determine how far the protocol can be optimized over a 622 Mbps satellite link. These experiments were known as the 118i and 118j experiments. During the 118i and 118j experiments, NASA worked closely with SUN Microsystems and FORE Systems to improve the operating system, TCP stacks. and network interface cards and drivers. We were able to obtain instantaneous data throughput rates of greater than 520 Mbps and average throughput rates of 470 Mbps using TCP over Asynchronous Transfer Mode (ATM) over a 622 Mbps Synchronous Optical Network (SONET) OC12 link. Following the success of these experiments and the successful government/industry collaboration, a new series of experiments. the 118x experiments. were developed.Document ID19990116706Acquisition SourceGlenn Research CenterDocument TypePreprint (Draft being sent to journal)AuthorsIvancic, William D.*(NASA Glenn Research Center Cleveland, OH United States)*Zernic, Mike*(NASA Glenn Research Center Cleveland, OH United States)*Hoder, Douglas J.*(NASA Glenn Research Center Cleveland, OH United States)*Brooks, David E.*(Infinite Global Infrastructures, LLC Chicago, IL United States)*Beering, Dave R.*(Infinite Global Infrastructures, LLC Chicago, IL United States)*Welch, Arun*(Infinite Global Infrastructures, LLC Chicago, IL United States)*Date AcquiredSeptember 6, 2013Publication DateNovember 1, 1999Subject CategorySpace Communications, Spacecraft Communications, Command And TrackingReport/Patent NumberE-11931NAS 1.15:209445NASA/TM-1999-209445Meeting InformationMeeting: Ka-Band UtilizationLocation: Sicily IslandCountry: ItalyStart Date: October 18, 1999End Date: October 20, 1999Sponsors:Instituto Internazionale delle Comunicazioni TaorminaFunding Number(s)PROJECT: RTOP 632-50-5ADistribution LimitsPublicCopyrightWork of the US Gov. Public Use Permitted.Available DownloadsNameType19990116706.pdfSTIcloud_downloadcontent_copyvisibilityRelated RecordsThere are no records associated with this record.visibility_offNo Preview Available
 No Fear Act | Freedom of Information Act | Office of the Inspector General | Agency Financial ReportsNASA Web Privacy Policy and Important Notices | NASA Guidelines for Quality of InformationDisclaimers, Copyright, Terms of Use | Accessibility | NASA OCIO | USA.gov | NASA.govContact Us | Site MapSTI LogoNASA Official: JoAnne R. Calhoun Site Curator: STI Compliance and Distribution Services Last Modified: September 12, 2024