[core] Traffic characteristics (Re: I-D Action: draft-ietf-core-coap-pm-00.txt)

Carsten Bormann <cabo@tzi.org> Wed, 19 April 2023 20:41 UTC

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From: Carsten Bormann <cabo@tzi.org>
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Subject: [core] Traffic characteristics (Re: I-D Action: draft-ietf-core-coap-pm-00.txt)
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Thank you to the authors for contributing this work.

<no hat>

Given that we now have completed adoption, we should enter a discussion of technical considerations.

One issue that comes up in my mind is whether the characteristics of CoAP traffic tend to be close enough to the characteristics of traffic for which the Spin and Square bits have been developed.  Specifically, both of these bits seem to assume there is always some traffic flowing to which these bits can be attached.  But CoAP traffic can be very intermittent (getting a temperature update once a minute is on the frequent side…).  

How well do Spin/Square work with traffic of this kind?

Grüße, Carsten

> On 2023-04-19, at 15:33, internet-drafts@ietf.org wrote:
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories. This Internet-Draft is a work item of the Constrained RESTful
> Environments (CORE) WG of the IETF.
>   Title           : Constrained Application Protocol (CoAP) Performance Measurement Option
>   Authors         : Giuseppe Fioccola
>                     Tianran Zhou
>                     Mauro Cociglio
>                     Fabio Bulgarella
>                     Massimo Nilo
>                     Fabrizio Milan
>   Filename        : draft-ietf-core-coap-pm-00.txt
>   Pages           : 16
>   Date            : 2023-04-19
> Abstract:
>   This document specifies a method for the Performance Measurement of
>   the Constrained Application Protocol (CoAP).  A new CoAP option is
>   defined in order to enable network telemetry both end-to-end and hop-
>   by-hop.  The endpoints cooperate by marking and, possibly, mirroring
>   information on the round-trip connection.
> The IETF datatracker status page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-ietf-core-coap-pm/
> There is also an htmlized version available at:
> https://datatracker.ietf.org/doc/html/draft-ietf-core-coap-pm-00