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Re: [802.3af] Clocking over Ethernet

Steve and Colleagues -

Indeed there seems to be a danger of scope drift, which must be fought.  On the
other hand, there appears to be perceived value in a mechanism which integrates
power delivery with fine time synchronization support to the DTE(trying to
phrase that latter concept generically).  For the record, I agree with that
perceived value.  My company's adoption of 802.3af versus staying with our
existing homegrown combo power/sync over unused pairs, or preferrably some
other future standard that provides both, will be strongly affected by how
802.3af addresses the issue.  Others may be in the same boat, i.e. this
discussion is therefore relevant to the topic of the breadth of utility of
802.3af, and hence is within the PAR.

Therefore, I ask whether discussions limited to the topic of how existing
802.3af proposals might support and/or preclude hypothetical future, backward
compatible, enhancements to provide synchronization support are within scope,
or are they off topic for the reflector as well?


--- Steve Carlson <scarlson@xxxxxxxxxxxxx> wrote:
> Colleagues:
> The 802.3af Reflector is to be used only to support the work of the Task
> Force. As Geoff Thompson has stated, the "clocking over Ethernet" thread is
> not appropriate use of this reflector.
> The official policy on the use of this reflector is as follows:
> "The reflector can be used for announcements, comments, discussions, or
> dissemination of information related to the work of this study group."
> This topic is not part of the PAR or Objectives of 802.3af.
> Please move this discussion to another venue.
> Thank you.
> Regards,
> Steven B. Carlson
> President
> Co-Chair, ESTA Control Protocols Working Group
> Chair, ESTA ACN Task Group
> Chair, IEEE 802.3af DTE Power via MDI Task Force
> High Speed Design, Inc.
> 11929 NW Old Quarry Road
> Portland, OR 97229
> 503.626.4206
> FAX 503.626.4206
> scarlson@xxxxxxxxxxxxx

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