Kevin and David,
I am sure most of the people on the
reflector know that by making Ethernet reliable will not make IP reliable hence
applications rely on TCP/SCTP for reliability of the network. Some applications
use their own Implementation of reliable protocol on top of UDP/IP (If they are
not happy with TCP’s performance). IP stack can silently drop the packets
without notifying the application.
FC is a reliable link and their sw stack
is also reliable means SCSI mid layer with HBA driver makes it a request
response protocol where if the request can not be queued then stack ask
application to retry.
I am very interested in rate limit on L2 along
with #2, flow control based on class/flow.
This helps intelligent layer to segregate
different types of traffic flowing on Ethernet and it will avoid the HOL, reduce
latency on critical flows and reduce probability of drop on critical flows when
different flows are merged on same Ethernet pipe.
Regards,
Shreyas
From: Kevin Daines
[mailto:Kevin.Daines@WWP.COM]
Sent: Tuesday, October 25, 2005
11:36 PM
To:
STDS-802-3-CM@listserv.ieee.org
Subject: Re: [8023-CMTF]
802.3ar/D0.9 is available
David,
Not sure what you mean by "primary
objective". Perhaps you didn't intend to use the "reserved word"
objective. The following are the (4) TF objectives:
1) Specify a mechanism to limit the rate
of transmitted data on an Ethernet link
2) Specify a mechanism to support the communication of congestion information
3) Preserve the MAC/PLS service interfaces
4) Minimize throughput reduction in non-congested flows
The CMTF adopted a proposal to satisfy
CMTF objective #1.
Recently, proposals related to
(backward) congestion notification have been made in 802.1 (related to #2).
Kevin Daines
Chair, P802.3ar TF
From: David V
James [mailto:dvj@alum.mit.edu]
Sent: Tuesday, October 25, 2005
11:04 PM
To: Kevin Daines;
STDS-802-3-CM@listserv.ieee.org
Subject: RE: [8023-CMTF]
802.3ar/D0.9 is available
I would claim
that the TF has still not provided any promising
solutions for
avoiding dropped frames in a short-distance
(computer room)
environment.
Thus, since it
doesn't currently meet its primary objective,
I would smile
(rather than frown) at radical new ideas that
have a chance of
meeting the primary objective.
-----Original Message-----
From: Kevin Daines
[mailto:Kevin.Daines@WWP.COM]
Sent: Tuesday, October 25, 2005
5:20 PM
To: STDS-802-3-CM@listserv.ieee.org
Subject: Re: [8023-CMTF]
802.3ar/D0.9 is available
Asif,
As with any TF meeting pre-D1.0,
presentations in support of or related to the TF objectives are welcome and
encouraged. Post-D1.0, the TF naturally shifts its focus to perfecting the
draft. During that phase, radically new ideas are generally frowned upon.
That said, the plans for the meeting are
1) Review D0.9 and prepare D1.0. Since we
have adopted one proposal in support of one of our objectives, it is the first
order of business.
2) Entertain presentations, if any, in
support of or related to the TF objectives. I'll send my customary
"Call for presentations" e-mail shortly.
Kevin Daines
Chair, P802.3ar TF
From: Asif
Hazarika [mailto:ahazarik@FMA.FUJITSU.COM]
Sent: Tuesday, October 25, 2005
5:10 PM
To:
STDS-802-3-CM@listserv.ieee.org
Subject: Re: [8023-CMTF]
802.3ar/D0.9 is available
Hello. Time to discuss about the
plans for the plenary meeting.
What are the plans? We would like to meet
and discuss the draft and get updates.
-----Original Message-----
From: Kevin Daines
[mailto:Kevin.Daines@WWP.COM]
Sent: Tuesday, October 25, 2005
3:51 PM
To:
STDS-802-3-CM@listserv.ieee.org
Subject: [8023-CMTF] 802.3ar/D0.9
is available
Congestion Management TF members,
At the July 2005 IEEE 802 Plenary meeting in San Francisco, we
(the P802.3ar CMTF) passed the following motion:
"Adopt changes to Clause 4, Annex 4A & Clause 30
described in barrass_1_0505.pdf as a baseline proposal for 802.3ar/D1.0. The
changes to Clause 4 will be made after the
changes to Annex 4A have been solidified in 802.3ar TF review."
In order to jumpstart our progress on D1.0, Hugh Barrass and
I have prepared P802.3ar/D0.9 for CMTF preview. It may be found here:
Please note this draft has no official status. It is being
made available for TF preview, prior to the November meeting, in order to more
efficiently prepare P802.3ar/D1.0 and commence TF ballot after we meet in
November. Hope to see you in Vancouver.