Re: [Dots] 128-255 key value range for telemetry attributes (was RE: I-D Action: draft-ietf-dots-telemetry-01.txt

mohamed.boucadair@orange.com Thu, 09 July 2020 07:44 UTC

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From: mohamed.boucadair@orange.com
To: "dots@ietf.org" <dots@ietf.org>
Thread-Topic: [Dots] 128-255 key value range for telemetry attributes (was RE: I-D Action: draft-ietf-dots-telemetry-01.txt
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Date: Thu, 09 Jul 2020 07:44:54 +0000
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Subject: Re: [Dots] 128-255 key value range for telemetry attributes (was RE: I-D Action: draft-ietf-dots-telemetry-01.txt
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Hi all, 

The change is now made to the github version: https://github.com/boucadair/draft-dots-telemetry.

Cheers,
Med

> -----Message d'origine-----
> De : Dots [mailto:dots-bounces@ietf.org] De la part de
> mohamed.boucadair@orange.com
> Envoyé : vendredi 26 juin 2020 14:48
> À : dots@ietf.org
> Objet : [Dots] 128-255 key value range for telemetry attributes
> (was RE: I-D Action: draft-ietf-dots-telemetry-01.txt
> 
> Hi all,
> 
> We discussed yesterday the proposal to use 128-255 as
> comprehension-optional range for telemetry attributes.  The issue
> was initially discussed below.
> 
> If we hear no objection, we will update the draft to implement
> this proposal. If implemented, the telemetry draft will be
> updating RFC8782, which is fine.
> 
> We do have new 117 attributes in the telemetry spec, but we are
> considering reducing that list in compliance with RFC7951 rules.
> 
> Cheers,
> Med
> 
> > -----Message d'origine-----
> > De : Dots [mailto:dots-bounces@ietf.org] De la part de
> > mohamed.boucadair@orange.com Envoyé : lundi 3 février 2020 10:37
> À :
> > Jon Shallow (supjps-ietf@jpshallow.com); dots@ietf.org Objet :
> Re:
> > [Dots] I-D Action: draft-ietf-dots-telemetry-01.txt
> >
> > Hi all,
> >
> > FYI, a review from Jon is available at:
> > https://github.com/boucadair/draft-
> > dots-telemetry/raw/master/DOTS%20Telemetry%2001-rev%20Jon-
> res%20Med.do
> > cx
> >
> > -02 will integrate almost all comments from  Jon. Please find
> below
> > some points we would like to hear more from the working group:
> >
> > (1) key value range for telemetry: Jon raised this point "These
> keys
> > requires 3 bytes - and telemetry information is going to be
> difficult
> > to fit into a packet.  I appreciate that comprehension-required
> Is for
> > numbers less than 0x8000 - perhaps the comprehension-required
> range is
> > reduced and also has a section higher up so the total of 0x8000
> still
> > stands so less bytes can be used here."
> >
> >    +----------------------+-------+-------+------------+--------
> -------+
> >    | Parameter Name       | CBOR  | CBOR  | Change     |
> Specification |
> >    |                      | Key   | Major | Controller |
> Document(s)   |
> >    |                      | Value | Type  |            |
> |
> >    +----------------------+-------+-------+------------+--------
> -------+
> >    | ietf-dots-signal-cha | 32776 |   5   |    IESG    |
> [RFCXXXX]   |
> >    | nnel:telemetry       |       |       |            |
> |
> >
> > Med: This is a major one. We need to assess the gain, but it is
> > possible in theory to update our assignment policies and
> reassign,
> > e.g., 128-255 range to be comprehension-optional (specific for
> > telemetry). This would mean that the telemetry spec will be
> tagged as updating the base signal channel spec.
> > We need more discussion.
> 


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