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Re: [802.3BA] [HSSG] Reach Ad Hoc

Is anyone officially consolidating SM fiber length data for a
presentation at the January meeting?  If so, I have some data to

Jason Wertz 
Sandia National Laboratories 
Albuquerque, NM 87185-0806 
(505) 284-9471

-----Original Message-----
From: Chris Cole [mailto:chris.cole@FINISAR.COM] 
Sent: Tuesday, December 11, 2007 5:22 PM
Subject: Re: [HSSG] Reach Ad Hoc

During the November HSSG meeting, optics vendors made a presentation
proposing changing the 10km reach objective to 3km or 4km. One of my
motivations for working on the proposal was informal input from a number
of 100GE end users that >90% of their data center and short interconnect
needs would be met by a reach objective less then 4km (versus 10km.)
With such a reach distribution, a 4km or less optimized reach objective
would result in overall cost savings.

As part of the HSSG effort to review this proposal, numerous requests,
both informal as well as from the HSSG chair and Reach Ad Hoc chair,
have been made for contributions to quantify the 10km and under reach
distribution. While the optics vendors as suppliers can accurately
represent the relative costs of optics alternatives, they can not
represent end user requirements. 

To date, we have seen no end user presentation or data supporting
changing the 10km reach objective to 4km or less. Unless such
contributions are forthcoming, it is likely that there will be no
motivation to make the change. This sentiment can be seen in the 12/7
Reach Ad Hoc conference call minutes.

I would encourage any HSSG participant that views their volume 100GE SMF
needs as better met by a 4km or shorter reach objective to make a
contribution containing reach distribution data in support of this
position. Otherwise we will move forward with the existing approved