[802.3BA] Phone meeting of the "Statistical Eye Ad Hoc" 9 am PT on Monday 30 June
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@AVAGOTECH.COM]
Sent: Tuesday, April 01, 2008 12:38 PM
To: STDS-802-3-HSSG@LISTSERV.IEEE.ORG
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.