Re: [802.3EEESG] On the topic of tranistion time (was Re: [802.3EEESG] Comments on our work from Vern Paxson)
Title:
This is a very interesting
discussion, and an important one I think. May I suggest that in July we send a
request from our group to the AV Bridging group in 802.1 to give us a tutorial
presentation on both their reservation and timing protocols as well as any
constraints they may have...at their earliest convenience ofcoarse.
I
think it may be helpful for those of us not intimately familiar with the
technology and for those of us that are familiar with it but may have some
additional questions.
my
2c
Wael
P.S. I have copied Michael who is
Chairing the Audio/Video Bridging Task Group
--
Wael
William Diab
Director, Technical Strategy, Broadcom
Secretary, IEEE 802.3
CSMA/CD Working Group (Ethernet)
-----Original Message-----
From:
Geoff Thompson [mailto:gthompso@NORTEL.COM]
Sent:
Monday, July 02, 2007 8:43 AM
To:
STDS-802-3-EEE@listserv.ieee.org
Subject: Re: [802.3EEESG] On the topic of
tranistion time (was Re: [802.3EEESG] Comments on our work from Vern
Paxson)
Vern-
At 11:51 PM 7/1/2007 , Vern Paxson wrote:
>
> It was PRECISELY my point that 802.1 AVB is not "designed for
> >
general Internet use".
>
>Then it certainly makes sense to avoid
transition outages when it's in use.
>
>Idon't know anything about
802.1 AVB. At least naively, it seems there
>will be signaling
involved, such that switches can tell when it's being
>used, and avoid
transitions - is that
right?
>
>
Vern
That was my thought. AVB enabled switches will be able to tell when
it is being used. I envisioned that the "stream coming" signal would be more
likely to come from the application than the switch though.
There is a
project that is part of AVB, P802.1Qat, Stream Reservation Protocol to do this
sort of thing for bandwidth reservation above the PHY level..
See: http://www.ieee802.org/1/pages/802.1at.html
Geoff