Skip to navigation
Latest News

University of Tokyo sets two new Net speed records

By Simon Aughton

Posted on 25 Apr 2007 at 12:19

The University of Tokyo has broken two of the Internet2 Land Speed Records and has now set or broken 10 records for the highest-bandwidth, end-to-end networks.

The first record was set over a next-generation IPv6 network path over 30,000km long and crossing six international networks (over three-quarters of the circumference of the Earth). The Tokyo team successfully transferred data at a rate of 7.67Gbps which is equivalent to 230,100 terabit-metres per second (Tb-m/s) - the rate at which data is transferred multiplied by the distance travelled.

The team used standard TCP network technologies to achieve the new mark.

The following day it used a modified version of TCP to achieve an even greater record. Using the same 30,000km path, the network was able to achieve a throughput of 9.08Gbps, equivalent to 272,400Tb-m/s for both the IPv6 multi and single stream categories.

Internet2, which monitors Land Speed Record attempts, noted that this new IPv6 record surpassed the current IPv4 record of 239,820Tb-m/s, demonstrating that IPv6 networks are able to provide the same, if not better, performance as IPv4.

'These records are final for the 10Gbps network era because they represent more than 98 per cent of the upper limit of network capacity,' said Dr Kei Hiraki, professor at the University of Tokyo and team leader. 'Through collaboration by a number of institutions, we have demonstrated the ability to overcome the distance and achieve this newest mark.'

The principle advantage of the IPv6 protocol over the existing IPv4 system is that it allows for many more individual IP addresses, and its adoption is expected to accelerate as the number of available addresses dwindles.

No-one is quite sure when this will happen, although the US Government has set a 2008 deadline for all civilian and defence vendors to move to IPv6. IPv4 supports a maximum of 4.3 billion addresses. IPv6 will provide 5x1028 addresses for each of the 6.5 billion people in the world's population today.

Is your business a social business? For helpful info and tips visit our hub.

Subscribe to PC Pro magazine. We'll give you 3 issues for £1 plus a free gift - click here
Be the first to comment this article

You need to Login or Register to comment.

(optional)

advertisement

Latest Blog Posts Subscribe to our RSS Feeds
Latest ReviewsSubscribe to our RSS Feeds
Latest Real World Computing

advertisement

Sponsored Links
 
SEARCH
Loading
WEB ID
SIGN UP

Your email:

Your password:

remember me

advertisement


Hitwise Top 10 Website 2010
 
 

PCPro-Computing in the Real World Printed from www.pcpro.co.uk

Register to receive our regular email newsletter at http://www.pcpro.co.uk/registration.

The newsletter contains links to our latest PC news, product reviews, features and how-to guides, plus special offers and competitions.