The current thinking on synchronization desires/requirements
is succinctly stated in Geoff Garner’s Synchronization presentation: http://grouper.ieee.org/groups/802/3/re_study/public/200511/20051114-garner-synch-simul.pdf
From: David V James
[mailto:dvj@ALUM.MIT.EDU]
Sent: Friday, December 02, 2005
8:45 PM
To: STDS-802-3-RE@listserv.ieee.org
Subject: Re: [RE] Action item
resulting from discussion of ResE logistics in 1588 call
I have concerns
with the stated approach.
I think we have
to understand what we would desire
first, which we
can then use to compare how well
1588 comes to
that ideal.
Without a good
strawman, its hard to be precise
about what
portions of 1588 (or some of the
speculative
features conceived for revisions)
would fit into
the picture.
I therefore would
continue to encourage that this
be done in two
phases (which can be in parallel):
1)
Define/refine the strawman.
2) Compare
features of strawman and existing 1588.
Actually, the
1588 chair recommended that (2) would
be useful, which
can only be done after (1).
David V.
James
3180 South Ct
Palo Alto, CA 94306
Home: +1.650.494.0926
+1.650.856.9801
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Base: dvj@alum.mit.edu
-----Original Message-----
From: Geoffrey M. Garner
[mailto:gmgarner@COMCAST.NET]
Sent: Thursday, December 01, 2005
9:37 AM
To: STDS-802-3-RE@listserv.ieee.org
Subject: [RE] Action item
resulting from discussion of ResE logistics in 1588 call
The question of the logistics for bringing ResE related
timing/synch work to 1588 was discussed in the 1588 call today (under new
business). It was felt that, before deciding the details of which
subcommittee the work should be discussed in and how the work should be
submitted, a clearer understanding is needed of what the work is. We need
to be more precise in (1) what aspects of 1588 we can simply reference and use,
(2) what aspects of 1588 make it non-usable for ResE, and (3) what aspects
could be used with modifications. We have indicated we will use the
existing 1588 and leverage the new version to the fullest extent possible; we
need to be more precise on this.
It was asked that we prepare a VG presentation (approx
1/2 hour in length) for an upcoming 1588 call (the calls are the first and
third Thursdays of each month, so the next calls are December 15 and January
5).
The reason a VG presentation is needed is that
there is an existing 1588 PAR for the new version. Work can not
simply be added to the PAR; it needs to be understood to what extent the ResE
timing/synch work fits in the existing PAR and to what extent a new PAR would
be needed. It also needs to be understood to what extent the work would
have impact on existing 1588 applications. The VG presentation
should address items (1) - (3) above; it seems to me it would also be useful to
list the items needed for timing/synch that are not currently in 1588 at
all. It seems to me it would be ideal to try to have this by the
December 15 1588 call if possible (that allows 2 ResE calls for discussion -
12/7 and 12/14).
-------------------------------------------------------
To the above, I would add that items we need that are not
currently in 1588 should also be