John Neiberger wrote: > > Here's a quote from something I just saw in the news: > > "Scientists at the Stanford Linear Accelerator Center used > fiber-optic > cables to transfer 6.7 gigabytes of data -- the equivalent of > two DVD > movies -- across 6,800 miles in less than a minute. > > Pushing the tech envelope > The team was able to transfer uncompressed data at 923 megabits > per > second for 58 seconds from Sunnyvale, California, to Amsterdam, > Netherlands. That's about 3,500 times faster than a typical > Internet > broadband connection. " > > Okay, 923 Mbps is a speed record? An OC-48 is roughly 2.6 > times faster > and they're fairly common. What's the big deal about 923 > Mbps? I > realize that I must be missing something very obvious here but > I don't > understand the milestone they're claiming to have passed. > > Admittedly, I'm about to fall asleep in my chair but that's par > for the > course with me. :-) > > So, what's the big deal? In a world of OC-192 and up, why is > earth shattering? > > John >
John, It clearly isn't a bandwidth record in terms of bps. I'm aware of as many as a few hundred OC-192s being "DWDMed" onto a single fiber. I suspect this has to do with the control/reliability mechanisms associated with the file transfer. I read the same article. Nothing was said about the protocols involved (it was packaged for mass consuption evidentally). It was likely FTP/TCP/IP or something along those lines (although a negative ack approach would likely be the most effective). I noticed that there were several intermediate hops. Don't know if that was a ploy to reduce the delay portion of the bandwidth*delay product between any two points or if there were other reasons. Scott > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=64771&t=64767 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
