Contact: Kei Hiraki
Data Reservoir project
The University of Tokyo
+ 81-3-5841-4039

"New Internet2 Land Speed Records
Set By An International Research Group"

-- Researchers and engineers from the University of Tokyo ,the Japanese WIDE Project, Chelsio Communications, Fujitsu Computer Technologies, LTD, NTT communications, APAN, JGN2, SURFnet, CANARIE, IEEAF, Pacific Northwest Gigapop, StarLight and Universiteit van Amsterdam together established the world’s longest 10 Gigabit per second circuit ever recorded for the transmission of internet data. The high bandwidth link connected two servers of the University of Tokyo’s Data Reservoir project through United States, Canada, Netherlands then back through United State to Tokyo. The length of this fiber optic path is approximately 33,979 km, spanning 17 time zones. The link was used to perform high-speed single TCP data transfers.

In the experiment, 7.21 Gigabits-per-second TCP payload bandwidth was sustained on a single stream with standard 1500-Byte Ethernet packets between two servers connected by this 33,979 km network. This international cooperative project pushes the boundaries of global research and education and lays a foundation for a new array of international research opportunities.

A pair of data-sharing Opteron systems from the Data Reservoir project, placed at Tokyo, each equipped with a Chelsio T110 10 Gigabit Ethernet adapter supporting TCP/IP offload were used for this experiment. A single TCP stream transferred data for over 30 minutes between the two hosts. In the calculation of bandwidth-distance products, which is used as a measure for the Land Speed Record, the distance is calculated as 30,000 km because of the rule of the Land Speed Record. The combined bandwidth times distance value is a new world record at 216,300 terabit meters per second. This is 45% greater than the previous Internet2 Land Speed Record IPv4 single stream achieved by the same group on Nov. 9, 2004, and is 17 % greater than the previous Internet2 Land Speed Record IPv4 multiple streams achieved on Nov. 8, 2004. Therefore this record is recognized as both IPv4 single and multiple stream class record. Network round trip time on this experiment is about 499 milli second.

Highlights of this achievement are as follows:

This experiment is partially supported by the Special Coordination Fund for Promoting Science and Technology, Ministry of Education, Culture, Sports, Science and Technology, Japan.

The demonstrations were made possible through the support of the following manufacturers, who have generously contributed their equipment and knowledge: Toyo Corporation, Foundry Networks, Cisco Systems, Bussan Networks, and Net One Systems.

Year/Month/DayBandwidth distance productName of Institutionclass
2000/3/21 4278 Microsoft,Qwest Communications,University of Washington,USC Information Sciences Institute IPv4 Single Stream
2000/3/29 5384 Microsoft,Qwest Communications,University of Washington,USC Information Sciences Institute IPv4 Multiple Stream
2002/4/9 4933 University of Alaska at Fairbanks,Faculty of Science of the University of Amsterdam,SURFnet IPv4 Single Stream
2002/8/22 40 Oregon Gigapop,NYSERNet,University of Oregon IPv6 Multiple Stream
2002/9/27 2517 ARNES,DANTE,RedIRIS IPv6 Single Stream
2002/10/9 5154 ARNES,DANTE,RedIRIS IPv6 Single Stream
2002/11/19 10136 Nationaal Instituut voor Kernfysica en Hoge-Energiefysica (NIKHEF),Universiteit van Amsterdam (UvA),Stanford Linear Accelerator Center (SLAC),California Institute of Technology (Caltech) IPv4 Single and Multiple stream
2003/2/23 23888 California Institute of Technology (Caltech),CERN,Los Alamos National Laboratory (LANL),Stanford Linear Accelerator Center (SLAC) IPv4 Single and Multiple stream
2003/5/6 6947 California Institute of Technology (Caltech), CERN IPv6 Single and Multiple stream
2003/10/10 38420 California Institute of Technology (Caltech),CERN IPv4 Single and Multiple stream
2003/ 11/11 61752 California Institute of Technology (Caltech),CERN IPv4 Single and Multiple stream
2004/2/22 68431 California Institute of Technology (Caltech),CERN IPv4 Multiple stream
2004/4/14 69073 SUNET,Sprint IPv4 Single stream
2004/5/6 77699 California Institute of Technology (Caltech),CERN IPv4 Multiple stream
2004/ 6/25 104529 California Institute of Technology (Caltech),CERN IPv4 Multiple stream
2004/6/28 103583 California Institute of Technology (Caltech),CERN IPv4 Single stream
2004/9/12 124935 SUNET,Sprint IPv4 Single and Multiple stream
2004/11/8 184877 California Institute of Technology (Caltech),CERN,CENEC IPv4 Multiple stream
2004/11/9 148850 University of Tokyo, Fujitsu Computer Technologies, WIDE, Chelsio Communications IPv4 Single stream
2004/12/25 216300 University of Tokyo, Fujitsu Computer Technologies, WIDE, Chelsio Communications, APAN, JGN2, CANARIE, SURFnet, Universiteit van Amsterdam IPv4 Single and Multiple stream
Table 1. Brief History of Internet Land Speed Record
Figure 1. History of IPv4 single stream TCP Land Speed Record

List of participants of the experiment

Network used in the experiment (from west to east)

Network switching points

T-LEX, Pacific Northwest Gigapop, StarLight, NetherLight, Universiteit van Amsterdam

University of Tokyo, Data Reservoir /GRAPE-DR Project is a research project funded by the Special Coordination Fund for Promoting Science and Technology, MEXT, Japan. The goal of the project is to establish a global data-sharing system for scientific data and to construct a very high-speed computing engine for simulation in astronomy, physics and bio-science. GRAPE-DR project will construct 2PFLOPS computing engine and global research infrastructure that utilize multi-10Gbps networks in 2008. This experiment is performed by cooperation of the University of Tokyo and Fujitsu Computer Technologies, LTD. For more information, visit:
Contact: Kei Hiraki
Tel: +813-5841-4039
Fax: +81-3-3818-1073

WIDE, a research consortium working on practical research and development of Internet-related technologies, was launched in 1988. The Project has made a significant contribution to development of the Internet by collaborating with many other bodies -- including 133 companies and 11 universities to carry out research in a wide range of fields, and by operating M.ROOT-SERVERS.NET, one of the DNS root servers, since 1997. WIDE Project also operates T-LEX ( as an effort of stewardship for the IEEAF Pacific link in Tokyo.
Tel: +81-466-49-3618 (c/o KEIO Research Institute at SFC)
Fax: +81-466-49-3622

The Fujitsu Computer Technologies (abbreviation “CTEC") is a company that develops the built-in hardware software related to electronic equipment. We have latest technologies for server, network and storage system. The DataReservoir system is developed by this technology background. This system is made by using parallel operation technologies of network and storage on the Linux platform. By this high scalability, this system has achieved the forwarding performance of the data transfer rate in the world.

Chelsio Communications is the established leader in 10-Gigabit Ethernet server adapters and protocol acceleration technology. Chelsio’s programmable T110 10GbE Protocol Engine is the only 10Gbps Ethernet adapter available today providing full TCP/IP offload and iSCSI acceleration. The T110 has been independently verified as the highest throughput, lowest latency and most CPU efficient Ethernet adapter in the industry - all with standard 1500-byte Ethernet frames. The T110 dramatically improves application performance by offloading processor-intensive network and storage protocol stacks from overburdened processors, returning processing cycles to the application to enhance overall system performance. For detail information, visit:

NTT Communications is a subsidiary of Nippon Telegraph and Telephone (NTT) Corporation (NYSE: NTT) - one of the world's largest telecommunications companies. NTT Com provides high-quality, technologically advanced network management, security and solution services to consumers, corporations and governments on a global basis, with a special focus on the Asia-Pacific region. For more information, please visit

APAN (Asia-Pacific Advanced Network) is a non-profit international consortium established on 3 June 1997. APAN is designed to be a high-performance network for research and development on advanced next generation applications and services. APAN provides an advanced networking environment for the research and education community in the Asia-Pacific region, and promotes global collaboration.
Its objectives are:

JGN 2 is an open testbed network environment for research and development, which was previously operated by JGN (Japan Gigabit Network : Gigabit network for R&D) from April 1999 to March 2004, and expanded by the National Institute of Information and Communications Technology (hereinafter NICT) as a new ultra-high-speed testbed networks for R&D collaboration between industry, academia, government with the aim of promoting a broad spectrum of research and development projects, ranging from fundamental core research and development to advanced experimental testing, in areas including the advancement of network-related technologies for the next generation and diverse range of network application technologies.

CANARIE is Canada's advanced Internet organization, a not-for-profit corporation that facilitates the development and use of next-generation research networks and the applications and services that run on them. By promoting collaboration among key sectors and by partnering with similar initiatives around the world, CANARIE stimulates innovation and growth and helps to deliver social, cultural, and economic benefits to all Canadians. CANARIE positions Canada as the global leader in advanced networking, and is supported by its members, project partners, and the Government of Canada. CANARIE developed and operates CA*net 4, Canada's national research and education network. For more information, visit:

Pacific Northwest Gigapop is the Northwest's Next Generation Internet, applications cooperative, testbed, point of presence; home to the Pacific Wave international peering exchange; and joint steward with WIDE of the IEEAF trans-Pacific link. PNWGP and Pacific Wave connect together high-performance international and federal research networks with universities, research organizations, and leading edge R&D and new media enterprises throughout Washington, Alaska, Idaho, Montana, Oregon, and the Pacific Rim. For more information, visit:

StarLight is an advanced optical infrastructure and proving ground for network services optimized for high-performance applications. Operational since summer 2001, StarLight is a 1GE and 10GE switch/router facility for high-performance access to participating networks and also offers true optical switching for wavelengths. StarLight is being developed by the Electronic Visualization Laboratory (EVL) at the University of Illinois at Chicago (UIC), the International Center for Advanced Internet Research (iCAIR) at Northwestern University, and the Mathematics and Computer Science Division at Argonne National Laboratory, in partnership with Canada's CANARIE and the Netherlands' SURFnet. STAR TAP and StarLight are made possible by major funding from the US National Science Foundation to UIC. StarLight is a service mark of the Board of Trustees of the University of Illinois. See

SURFnet operates and innovates the national research network, to which over 150 institutions in higher education and research in the Netherlands are connected. The organization is among the leading research network operators in the world. SURFnet is responsible for the realization of GigaPort Next Generation Network, a project of the Dutch government, trade and industry, educational institutions and research institutes to strengthen the national knowledge infrastructure. Research on optical and IP networking and grids are a prominent part of the project. For more information, visit:

The Internet Educational Equal Access Foundation (IEEAF) is a non-profit organization whose mission is to obtain donations of telecommunications capacity and equipment and make them available for use by the global research and education community. The IEEAF TransPacific Link is the second 10 Gbps transoceanic link provided by IEEAF through a five year IRU donated by Tyco Telecom; the first, the IEEAF TransAtlantic Link, connects New York and Groningen, The Netherlands, and has been operational since 2002. IEEAF donations currently span 17 time zones. For more information, visit:

University of Amsterdam The Faculty of Science of University of Amsterdam. The Advanced Internet Research group of the University of Amsterdam's Faculty of Science researches new architectures and protocols for the Internet. It actively participates in world-wide standardisation organisations Internet Engineering Task Force and the Global Grid Forum. The group conducts experiments with extremely high-speed network infrastructures. The Institute carries out groundbreaking research in the fields of security, authorisation, authentication and accounting for Grid environments. The Institute is developing a virtual laboratory based on Grid technology for e-science applications. For more information please visit