[101073] in North American Network Operators' Group
Re: IEEE 40GE & 100GE
daemon@ATHENA.MIT.EDU (Stephen Sprunk)
Thu Dec 13 17:14:01 2007
From: "Stephen Sprunk" <stephen@sprunk.org>
To: "Chris Cole" <chris.cole@finisar.com>,
"Mikael Abrahamsson" <swmike@swm.pp.se>
Cc: "North American Noise and Off-topic Gripes" <nanog@merit.edu>
Date: Thu, 13 Dec 2007 15:51:43 -0600
Errors-To: owner-nanog@merit.edu
Thus spake "Chris Cole" <chris.cole@finisar.com>
> The 40km/10km cost ratio is between 1.6x and 2x, depending on
> the source.
>
> The 10km/4km cost ratio is between 1.15x and 1.3x, again
> depending on the source.
If those numbers translate into prices (not costs), then I'd prefer to see
40km and 4km optics, with no 10km optics. The important point is that the
40km optics neet to be able to handle 4.1km links with no attenuators,
preferably without any human tuning at all. You only pay the extra capital
cost once (if there even is any, due to more volume of fewer parts), but you
pay labor and sparing over and over.
S
Stephen Sprunk "God does not play dice." --Albert Einstein
CCIE #3723 "God is an inveterate gambler, and He throws the
K5SSS dice at every possible opportunity." --Stephen Hawking
