[2321] in North American Network Operators' Group
Re: NANOG
daemon@ATHENA.MIT.EDU (David ``Joel Katz'' Schwartz)
Wed Apr 3 18:04:49 1996
Date: Wed, 3 Apr 1996 18:00:36 -0500 (EST)
From: "David ``Joel Katz'' Schwartz" <stimpson@stimpson.igc.net>
To: Wolfgang Henke <wolfgang@whnet.com>
cc: bob_metcalfe@infoworld.com, avg@postman.ncube.com, nanog@merit.edu
In-Reply-To: <199604031809.AA25294@>
Obviously, we need to find some faster light.
On Wed, 3 Apr 1996, Wolfgang Henke wrote:
> Hmm...
>
> Using a real in use backbone of one of the mayor service providers,
> I find that a DS3 between silicon valley to Chicago has a 44 msec
> latency going through 4 hops. That's about the speed of light in
> fiber for the 5000 mile roundtrip ICMP ping packets.
>
> Using ATM will reduce the router latency. I estimate that with TCP/IP
> over ATM over SONET OC-3c the latency will be reduced from 44 msec
> to 40 msec, only a rather small improvement. The bandwidth used on the
> fiber wont matter much. With OC-12c I would still expect 40 msec or so
> since the speed of light in fiber is the limiting factor.
>
>
> Wolfgang
>
>
