Re: [802.3_MAINT] Phone meeting of the "Statistical Eye Ad Hoc" 9 am PT on Monday 30 June
Geoff,
It's an ad hoc of the IEEE P802.3ba Task Force. I am copying the maintenance reflector because this ad hoc arises from comment 52 of http://ieee802.org/3/axay/comments/D2.0/802.3ay_D2p0.pdf (on page 17) and the associated presentation http://ieee802.org/3/axay/public/jan_08/dawe_1_0108.pdf . The January maintenance meeting decided to refer the subject to P802.3ba because there is suitable fiber optics expertise (and interest, as it turns out) there to progress the issue.
Piers
> -----Original Message-----
> From: Geoff Thompson [mailto:gthompso@xxxxxxxxxx]
> Sent: 21 June 2008 16:24
> To: DAWE,PIERS
> Cc: STDS-802-3-MAINT@xxxxxxxxxxxxxxxxx; david_law@xxxxxxxx
> Subject: Re: [802.3_MAINT] Phone meeting of the "Statistical
> Eye Ad Hoc" 9 am PT on Monday 30 June
>
> Piers-
>
> As closely as I can tell from the documentation you have
> presented below,
> this is not a 802.3 Maintenance meeting. It is a pure 802.3
> ad hoc not associated with any Task Force.
>
> For it to be a Maintenance meeting there would have to be an
> action item
> from a regular Maint. meeting and have an 802.3 Maintenance
> Item upon which to base that action item.
>
> Geoff
>
>
> At 09:03 AM 6/19/2008 , DAWE,PIERS wrote:
> >There will be a phone meeting of this ad hoc at 9 am PT on
> Monday 30 June
> >for not more than an hour. The purpose will be to note any
> developments
> >in this field, document what we want to get accomplished,
> and make plans
> >for which SDOs or MSAs should address which issues to what
> timescales -
> >and in particular, what we want done in P802.3ba.
> >
> >Meeting Passcode: 404749
> >US phone number: +1 877 205 1729 or +1 719 867 0498
> >UK +44 (0) 20 7082 0221
> >Tokyo +813 4455 1485
> >Other country phone numbers are available: please email if
> you want one.
> >Press *6 to mute or "un-mute" line.
> >
> >Any meeting materials will be made available from
> >http://ieee802.org/3/ba/public/AdHoc/index.html
> >
> >If you are planning to participate to the teleconference
> please take a
> >moment to read the IEEE patent policy before the
> >meeting: http://standards.ieee.org/board/pat/pat-slideset.ppt.
> >
> >There are several overlapping interests:
> >1 802.3, maintenance of original 802.3ae
> > Sort out definition of eye measurements in the existing 10G
> > Ethernet (except LRM which is sorted)
> >2 SFP+
> > Provide spec points and any collateral e.g.
> measurement methodology
> > Choose suitable levels of statistical
> significance for
> > eyes at transmitter and receiver
> >3 P802.3ba
> > Provide measurement methodology and suitable levels of
> > statistical significance for any new eye specs in P802.3ba
> > Pay particular attention to test time for
> multi-lane PMDs (AUI
> > counts as a PMD, as it connects PMAs)
> > Consider to what extent eye measurements could be
> eliminated or
> > method modified if beneficial
> > There are separate considerations for electrical
> interconnect
> > (XFI, 10GBASE-KR and derivatives) and optical. However, the two
> > communities may be able to share ideas beneficially.
> >4 Other?
> >
> >As I see it, item 1 is not driven by a timeline but remains
> important,
> >item 2 is expected make its choices in the next two months
> or so, item 3
> >is not yet the focus of P802.3ba. It would be good to relate what
> >know-how will be available from SFP+ and when to the needs
> of items 1 and
> >3, and plan for what P802.3ba will need and when.
> >
> >Our charter in P802.3ba is defined by Straw Poll #1 from the
> March 08 Minutes:
> >
> >"Straw Poll #1: Regarding dawe_01_0308.pdf, the following
> should be done:
> >A. IEEE P802.3ba takes this work on as part of the project.
> >B. The work should be done, but not as part of the IEEE
> P802.3ba project.
> >C. Nothing should be done.
> >D. Further evaluation is necessary.
> >Results:
> >A. 23
> >B. 21
> >C. 0
> >D. 38
> >Choice D wins. A "Statistical Eye Ad Hoc" will be formed and
> Chaired by
> >Piers Dawe to further evaluate findings presented in
> dawe_01_0308.pdf, and
> >come back with a recommendation to the Task Force on how to handle."
> >
> >That's what the phone meeting is for - to progress our
> recommendation for
> >a work plan, to put before P802.3ba at its July meeting. It is NOT
> >intended to do actual engineering or scientific work on this call.
> >
> >Piers
> >
> >-----Original Message-----
> >From: DAWE,PIERS [mailto:piers.dawe@xxxxxxxxxxxxx]
> >Sent: Tuesday, April 01, 2008 12:38 PM
> >To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
> >Subject: [802.3BA] Invitation to join the "Statistical Eye Ad Hoc"
> >
> >All,
> >
> >At the March meeting of P802.3ba it was decided to set up a
> "Statistical
> >Eye Ad Hoc". Its purpose is to recommend improvement and
> clarification
> >to the (optical) transmit eye specification of IEEE Std 802.3 52.9.7,
> >and to make recommendations for any similar measurements in P802.3ba.
> >It is hoped to reduce the burden in product cost and heat of
> the present
> >spec, reduce test cost (time), remove ambiguity and improve test
> >reproducibility. Interoperability and existing networks will not be
> >affected. See
http://ieee802.org/3/ba/public/mar08/dawe_01_0308.pdf .
>An extract from the (unapproved) minutes of the March meeting is below.
>
>I intend to start by collecting a list of those interested and a
>building a list of what has been done and needs to be done to move this
>topic forward.
>
>As this is a specialist subject I intend to communicate with those who
>sign up, not the whole reflector. So please sign up if you are
>interested!
>
>Thank you,
>
>Piers
>
>Presentation #37
>Title - Eye mask statistical significance and practicality
>By - Piers Dawe, Avago Technologies
>See - dawe_01_0308.pdf
>Discussion
>* Definitions of the abbreviations used in the presentation were added
>at the end of the presentation. The Chair will upload the updated
>presentation to the website.
>* Clarifying questions were asked and answered.
>
>Straw Poll #1: Regarding dawe_01_0308.pdf, the following should be done:
> A. IEEE P802.3ba takes this work on as part of the project.
> B. The work should be done, but not as part of the IEEE P802.3ba
>project.
> C. Nothing should be done.
> D. Further evaluation is necessary.
>Results:
> A. 23
> B. 21
> C. 0
> D. 38
>Choice D wins. A "Statistical Eye Ad Hoc" will be formed and Chaired by
>Piers Dawe to further evaluate findings presented in dawe_01_0308.pdf,
>and come back with a recommendation to the Task Force on how to handle.