Re: [manet] I-D Action: draft-ietf-manet-dlep-da-credit-extension-04.txt

Rick Taylor <rick@tropicalstormsoftware.com> Tue, 06 March 2018 19:24 UTC

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From: Rick Taylor <rick@tropicalstormsoftware.com>
To: Lou Berger <lberger@labn.net>, "ratliffstan@gmail.com" <ratliffstan@gmail.com>
CC: "manet@ietf.org" <manet@ietf.org>
Thread-Topic: [manet] I-D Action: draft-ietf-manet-dlep-da-credit-extension-04.txt
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Date: Tue, 6 Mar 2018 19:24:25 +0000
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Subject: Re: [manet] I-D Action: draft-ietf-manet-dlep-da-credit-extension-04.txt
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Hi Lou,

I'm just making things less clear!

You are correct, the topic is shared paths for different flows, and I'd be happy to put some slides together.

Cheers,

Rick

> -----Original Message-----
> From: Lou Berger [mailto:lberger@labn.net]
> Sent: 06 March 2018 13:28
> To: Rick Taylor; ratliffstan@gmail.com
> Cc: manet@ietf.org
> Subject: Re: [manet] I-D Action: draft-ietf-manet-dlep-da-credit-extension-
> 04.txt
> 
> Hi Rick,
> 
> On 3/6/2018 8:19 AM, Rick Taylor wrote:
> > Hi All,
> >
> > I was unclear.  I meant "Chairs, would you like to reserve a slot in
> > the agenda so Lou and I can have a discussion at the mic about this
> > topic, or would you rather we kept this to the list."
> I thought I understood your previous e-mails, but now you lost me.
> 
> > If you do not have space in the agenda, I am happy to find a quiet
> > spot and let everyone know so we can have a DLEP-DiffServ BoF.
> If this is the topic I think you're referring to (shared paths for different
> DSCPs/PCPs) I think it would be great to have you present some slides on a
> problem statement and for a discussion to follow. I'm also happy to provide
> input on the slides if you want.  If this is a different topic, can you clarify?
> 
> Thanks,
> Lou
> 
> > Cheers,
> >
> > Rick
> >
> > On Sat, 2018-03-03 at 12:34 -0500, Stan Ratliff wrote:
> >> Rick/Lou,
> >>
> >> I’d prefer doing it at the mic in the joint session with CCAMP. Not
> >> sure what the schedule looks like there.
> >>
> >> I’m going to be in London; if this is an offline session, I’d like to
> >> participate.
> >>
> >> Regards,
> >> Stan
> >>
> >> Sent from my iPhone
> >>
> >>> On Mar 3, 2018, at 5:45 AM, Rick Taylor <rick@tropicalstormsoftware
> >>> .com> wrote:
> >>>
> >>> Hi Lou,
> >>>
> >>> I'm starting to receive quite a few enquiries from industry for DLEP
> >>> support for modem systems where different traffic classes flow via
> >>> different paths to destinations, so called 'hub-assist'
> >>> modems.  For these types of modem (an others) the ability to
> >>> describe the metrics per-flow to a destination is required.
> >>>
> >>> As I've mentioned before, I think there is benefit in splitting out
> >>> the concept of Traffic Class Ids (as specified in this draft) into
> >>> its own draft, including both the DSCP and Ethernet TOS examples,
> >>> and then referring to that draft from this one, and also from others
> >>> including 'metrics per TCID'.
> >>>
> >>> I'm in London, and do think this is a useful topic of conversation
> >>> for the meeting/future work.
> >>>
> >>> @chairs: Would you like Lou or I to grab 10 mins at the mic to talk
> >>> about this, or try to work it out offline?
> >>>
> >>> Cheers,
> >>>
> >>> Rick
> >>>
> >>>> -----Original Message-----
> >>>> From: manet [mailto:manet-bounces@ietf.org] On Behalf Of Lou
> Berger
> >>>> Sent: 02 March 2018 22:47
> >>>> To: manet@ietf.org
> >>>> Subject: Re: [manet] I-D Action: draft-ietf-manet-dlep-da-credit-
> >>>> extension-
> >>>> 04.txt
> >>>>
> >>>> Hi,
> >>>>
> >>>> There are a few items outstanding on the credit draft:
> >>>>
> >>>> I received an offline comment that I think should be noted in the
> >>>> draft.  The comment was that it might not be obvious that since
> >>>> queues/credit windows can be shared among (disjoint) sets of
> >>>> endpoints, that sending to one destination in a set reduces the
> >>>> available capacity to other destinations.  I'll propose some text
> >>>> on this shortly.
> >>>>
> >>>> There are also two questions that are still open:
> >>>>
> >>>> (A) does the WG want to keep the document as is or break apart the
> >>>> current document into two documents?
> >>>>
> >>>> - the first being the credit window and generic traffic
> >>>> classification definition and the second being the DA/DSCP
> >>>> extension and traffic classification sub-DI
> >>>>
> >>>> I can't speak for my co-authors, but I'm okay proceeding either
> >>>> way, but now is the time to decide.
> >>>>
> >>>> (B) finally, does the WG want to take the notional Ethernet/PCP
> >>>> based traffic classification which was added as an appendix, see
> >>>> [1], to sanity check the current functional decomposition and make
> >>>> it a full blown Ethernet/PCP extension
> >>>>
> >>>> my personal preference is to do this, it's not much effort and
> >>>> seems worthwhile.
> >>>>
> >>>> any thoughts and/or comments would be appreciated.
> >>>>
> >>>> I also look forward to discussing this in London (in the joint
> >>>> meeting with ccamp).
> >>>>
> >>>> Lou
> >>>>
> >>>> [1]
> >>>> https://tools.ietf.org/html/draft-ietf-manet-dlep-da-credit-exten
> >>>> sion-
> >>>> 04#appendix-B
> >>>>
> >>>>
> >>>>> On 3/1/2018 6:03 PM, Lou Berger wrote:
> >>>>> Hi,
> >>>>>
> >>>>> This version completes the updates discussed at the last IETF.
> >>>>> The
> >>>>> notable changes are:
> >>>>>
> >>>>> - Separate credit control from traffic classification
> >>>>>
> >>>>> - Ensure traffic classification is extendable to other flow
> >>>>> identification methods
> >>>>>
> >>>>>       - This included definition of a Notional Ethernet Credit
> >>>>> Window Traffic Classification (in an appendix) as a sanity check
> >>>>> on separation of mechanisms.  This can be removed at some point or
> >>>>> moved to it's own document/extension.
> >>>>>
> >>>>> - Add a management considerations section
> >>>>>
> >>>>> - other minor corrections/fixes.
> >>>>>
> >>>>> - One note, Traffic Class. Identifier (TID) was not changed as
> >>>>> discussed at IETF 100
> >>>>>
> >>>>> Lou
> >>>>>
> >>>>>> On 3/1/2018 4:45 PM, internet-drafts@ietf.org wrote:
> >>>>>> A New Internet-Draft is available from the on-line Internet-
> >>>>>> Drafts
> >>>> directories.
> >>>>>> This draft is a work item of the Mobile Ad-hoc Networks WG of the
> >>>>>> IETF.
> >>>>>>
> >>>>>>           Title           : DLEP DiffServ Aware Credit Window
> >>>>>> Extension
> >>>>>>           Authors         : Bow-Nan Cheng
> >>>>>>                             David Wiggins
> >>>>>>                             Lou Berger
> >>>>>>     Filename        : draft-ietf-manet-dlep-da-credit-
> >>>>>> extension-04.txt
> >>>>>>     Pages           : 26
> >>>>>>     Date            : 2018-03-01
> >>>>>>
> >>>>>> Abstract:
> >>>>>>      This document defines an extension to the DLEP protocol that
> >>>>>> enables
> >>>>>>      a DiffServ aware credit-window scheme for destination-
> >>>>>> specific and
> >>>>>>      shared flow control.  The extension is logically composed of
> >>>>>> two
> >>>>>>      mechanisms.  The first provides credit window control, the
> >>>>>> second
> >>>>>>      identifies how flows are identified and mapped to a credit
> >>>>>> window.
> >>>>>>
> >>>>>>
> >>>>>> The IETF datatracker status page for this draft is:
> >>>>>> https://datatracker.ietf.org/doc/draft-ietf-manet-dlep-da-cre
> >>>>>> dit-
> >>>> extension/
> >>>>>> There are also htmlized versions available at:
> >>>>>> https://tools.ietf.org/html/draft-ietf-manet-dlep-da-credit-e
> >>>>>> xtension-04
> >>>>>> https://datatracker.ietf.org/doc/html/draft-ietf-manet-dlep-d
> >>>>>> a-credit-
> >>>> extension-04
> >>>>>> A diff from the previous version is available at:
> >>>>>> https://www.ietf.org/rfcdiff?url2=draft-ietf-manet-dlep-da-cr
> >>>>>> edit-
> >>>> extension-04
> >>>>>>
> >>>>>> Please note that it may take a couple of minutes from the time of
> >>>> submission
> >>>>>> until the htmlized version and diff are available at
> >>>>>> tools.ietf.org.
> >>>>>>
> >>>>>> Internet-Drafts are also available by anonymous FTP at:
> >>>>>> ftp://ftp.ietf.org/internet-drafts/
> >>>>>>
> >>>>>> _______________________________________________
> >>>>>> manet mailing list
> >>>>>> manet@ietf.org
> >>>>>> https://www.ietf.org/mailman/listinfo/manet
> >>>>>>
> >>>>> _______________________________________________
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