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New Internet2 Land Speed Records Set

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  • From: "Lauren Rotman" <>
  • To: <>
  • Subject: New Internet2 Land Speed Records Set
  • Date: Wed, 26 Apr 2006 11:41:37 -0400


International Team Lead by the University of Tokyo Sets New IPv4 and IPv6

ANN ARBOR, Mich - April 26, 2006 - Internet2 today announced that an
international team set a new Internet2 Land Speed Records (I2-LSR) in the
IPv4 and IPv6 single and multi-stream categories. As an open and ongoing
competition for the highest-bandwidth, end-to-end networks, Internet2 LSR
awards represent the fastest rate at which data is transferred multiplied by
the distance traveled.

For the IPv4 record, a team from the University of Tokyo, the WIDE Project,
Chelsio Communications, JGN2 network, Northwest GigaPop, NTT Communications,
APAN, Fujitsu Computer Technologies, IEEAF, CANARIE, StarLight, SURFnet,
SARA, and the University of Amsterdam collaborated to create a network path
over 30,000 kilometers in distance crossing eight international networks and
exchange points. In doing so, the team successfully transferred data at a
rate of 8.80 Gbps which is equal to 264,147 terabit-meters per second

Dr. Kei Hiraki, professor at the University of Tokyo and LSR team leader
said, "While previous IPv4 record setting attempts were limited by the PC's
internal bus, this latest record setting attempt demonstrates that the
bottleneck has moved out of the PC and back into the network infrastructure.
In doing so, this record may be the last I2-LSR IPv4 record that uses 10Gbps
networks because any other attempt would require at least a 10% increase
over the previous record which would exceed the maximum capacity of the

For the IPv6 record, the team created a path over 30,000 kilometers in
distance crossing five international networks. The team transferred data at
a rate of 6.96 Gbps. Achieving a mark of 208,800 terabit-meters per second

Hiraki added, "As we continue to learn more about IPv6, we have been able to
leverage new networking technology called 'receiving side pacing' to
increase the stability of network. These new techniques enabled us to
increase the record by 10% and will hold enormous promise to help ensure
increased performance for IPv6 networks for the future."

The record setting team was presented with official awards for the Land
Speed Records at the annual Internet2 Spring Member Meeting held this week
in Arlington, VA

For more information about these record-setting attempts, see:
IPv4 -
IPv6 -

Details of past winning entries, complete rules, submission guidelines, and
additional details are available at:

About Internet2(R)
Led by more than 200 U.S. universities working with industry and government,
Internet2 develops and deploys advanced network applications and
technologies for research and higher education, accelerating the creation of
tomorrow's Internet. Internet2 recreates the partnerships among academia,
industry, and government that helped foster today's Internet in its infancy.
For more information, visit:

Media Contact:
Lauren Rotman

  • New Internet2 Land Speed Records Set, Lauren Rotman, 04/26/2006

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