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

Lou Berger <lberger@labn.net> Tue, 06 March 2018 13:43 UTC

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To: Rick Taylor <rick@tropicalstormsoftware.com>, "ratliffstan@gmail.com" <ratliffstan@gmail.com>
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From: Lou Berger <lberger@labn.net>
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Date: Tue, 6 Mar 2018 08:27:53 -0500
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Subject: Re: [manet] I-D Action: draft-ietf-manet-dlep-da-credit-extension-04.txt
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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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