How Fast Can A Network Go


Supercomputer makers may have their own shoot-outs, but nothing like the bragging by networking equipment makers. Foundry Networks, not really a force to reckon with in the routing space sent me a press release about its gear was used in a new Internet2 land speed record. (I2-LSR).

For the IPv4 record, a team from the University of Tokyo, WIDE Project, Microsoft Corp., Pacific Northwest Gigapop, JGN2 and other institutions collaborated to create a network path over 30,000 kilometers in distance crossing eight international networks.

Using the IPv4 protocol, the team achieved 7.99 Gbps transfer rate over multiple paths exceeding 30,000 km, setting a new record of 239,820 Terabit-meters/second. For the IPv6 record, the team transferred data at a rate of 6.18 Gbps over a 30,000 km path resulting in a mark of 185,400 terabit-meters per second (Tb-m/s) – 10.75% more than the previous record.

The record was set using three Foundry Networks’ NetIron 40G IPv4/IPv6 dual-stack routers configured with 10-Gigabit Ethernet Wide Area Network Physical Layer Interfaces (10-GbE WAN PHY) connecting to the trans-oceanic optical transport network. The I2-LSR competition for the highest-bandwidth over extended distances is an open and ongoing contest.



one thing that will skew the comparison is that many paths would not be accessible by ipv6 due to nowhere near complete implementation on the internet routers.

Dave Siegel

I just love how IPv6, touted as being so much more efficient than IPv4 for delivery of packets, totally sucked wind. There’s a difference of almost 2Gbps in their tests, and although the tests were not necessarily an IPv4 vs. IPv6 comparison and might not have had all the necessary variables controlled, it’s still a little concerning.

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