RE: Equalization and benefits of Parallel Optics.
Brad:
I also understand our objectives in the same way. We don't have an
objective for 100 m computer room connections. It seems to me the 300 m
objective was written for computer rooms. The 300 m over MMF could be
applied to any fiber solution.
Cheers,
Paul
At 12:55 PM 7/27/2000 -0700, Booth, Bradley wrote:
>Ali,
>
> From my understanding of the objectives, the task force doesn't have a
>distance objective of "100m data center applications." We do have an
>objective for 100m over installed MMF fiber. That 100m distance objective
>was chosen because it reflects what is used in the data center applications.
>If the task force satisfies the objective (which is a requirement for the
>task force to do), then we provide a solution for the application. The
>reverse is not true. If task force satisfies the application, then we don't
>meet our objectives.
>
>Given that the task force has to satisfy objectives first and foremost, I
>believe that it is key that the task force focus on those proposals that in
>some manner satisfy an objective. As I see it, parallel optics and parallel
>fiber do not satisfy any of our objectives; therefore, the task force needs
>to work on the ones that will satisfy our objectives.
>
>Cheers,
>Brad
>
> -----Original Message-----
> From: ghiasi [mailto:Ali.Ghiasi@Eng.Sun.COM]
> Sent: Thursday, July 27, 2000 2:17 PM
> To: stds-802-3-hssg@ieee.org; bradley.booth@intel.com
> Cc: Ali.Ghiasi@Eng.Sun.COM
> Subject: RE: Equalization and benefits of Parallel
>Optics.
>
> Brad
>
> > From: "Booth, Bradley" <bradley.booth@intel.com>
> > To: stds-802-3-hssg@ieee.org
> > Subject: RE: Equalization and benefits of Parallel Optics.
> > Date: Wed, 26 Jul 2000 18:29:56 -0700
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> >
> > I have one question:
> >
> > Which of our distance objectives is satisfied with
>parallel fiber and
> > parallel optics?
>
> The 100 m data center applications.
> >
> > It has been my interpretation that when we talked about
>100m of installed
> > base of MMF, that we were referring to the MMF fiber
>currently available for
> > use by 802.3z. Parallel optics does not operate over this
>installed base.
>
> You are correct parallel optics would not operate over an
>installed two fiber
> plant. Parallel optics would loose if you go in to an
>installed fiber base.
> What I suggested was 100m data center applications, where
>the fiber are not
> installed in the building wiring.
>
> Data center application are very significant as stated in
>the last meeting
> about half the total market. Solutions significantly lower
>cost targeted
> for sub 100 m is needed, otherwise there will several
>proprietary solutions.
> Parallel optics is the lowest cost, almost mature after 3
>years, lowest power,
> and smallest foot print. Parallel optics is ideal to get
>bandwidth off the
> edge of your board.
>
> Serial 850 or CWDM 850 can be another candidate for low cost
>data center
> applications by having cable advantage over parallell fiber.
>But you need
> to offset fiber advantage against power, size, cost,
>testing, and maturity.
>
> >
> > Or am I missing the point here?
> >
> > Cheers,
> > Brad
>
> Thanks,
>
> Ali Ghiasi
> Sun Microsystems
>
> >
>
Paul A. Bottorff, Director Switching Architecture
Enterprise Solutions Technology Center
Nortel Networks, Inc.
4401 Great America Parkway
Santa Clara, CA 95052-8185
Tel: 408 495 3365 Fax: 408 495 1299 ESN: 265 3365
email: pbottorf@NortelNetworks.com