nanog mailing list archives
Re: NY ranks #1 in Internet b/w
From: Alex Rubenstein <alex () nac net>
Date: Sun, 4 Nov 2001 10:19:52 -0500 (Eastern Standard Time)
Over 300 ms for less than 10000 km (6000 miles) is not great. Even a good satellite should be able to provide better round trip times...
That sounds somewhat erroneous. Geosynchronus orbit is about 22,500 miles; up+down+roundtrip makes that 22,500 * 4, or 90,000 miles; 90,000 / 186,000 miles/sec = 483 milliseconds, which, or course, due to routers inducing very measureable delay, and the fact that an IP Packet takes adds a little delay due to its lenght, is usually a bit more. When working on this stuff (specifically on a hop from Oslo to Jerusalem), I recall 630 ms being the average latency. But, to make my point, Geosync orbit could never, ever be less than 483 milliseconds, ever. -- Alex Rubenstein, AR97, K2AHR, alex () nac net, latency, Al Reuben -- -- Net Access Corporation, 800-NET-ME-36, http://www.nac.net --
Current thread:
- Re: NY ranks #1 in Internet b/w, (continued)
- Re: NY ranks #1 in Internet b/w Randy Bush (Nov 03)
- Re: NY ranks #1 in Internet b/w Neil J. McRae (Nov 05)
- Re: NY ranks #1 in Internet b/w steve wolff (Nov 05)
- Re: NY ranks #1 in Internet b/w Dave Morton (Nov 05)
- Re: NY ranks #1 in Internet b/w Nipper, Arnold (Nov 05)
- Re: NY ranks #1 in Internet b/w Steve Goldstein (Nov 05)
- Re: NY ranks #1 in Internet b/w Nipper, Arnold (Nov 05)
- Re: NY ranks #1 in Internet b/w Nipper, Arnold (Nov 05)
- Re: NY ranks #1 in Internet b/w Stephen Wolff (Nov 05)
- Re: NY ranks #1 in Internet b/w Iljitsch van Beijnum (Nov 04)
- Re: NY ranks #1 in Internet b/w Alex Rubenstein (Nov 04)
- Re: NY ranks #1 in Internet b/w Iljitsch van Beijnum (Nov 04)
- Re: NY ranks #1 in Internet b/w Brett Frankenberger (Nov 04)
- Re: NY ranks #1 in Internet b/w Iljitsch van Beijnum (Nov 04)
- Re: NY ranks #1 in Internet b/w Joel Jaeggli (Nov 04)
- Re: NY ranks #1 in Internet b/w Mikael Abrahamsson (Nov 04)