Re: [earlywarning] Comments on draft-schulzrinne-atoca-requirements-00

Tony Rutkowski <trutkowski@netmagic.com> Fri, 16 July 2010 11:05 UTC

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Date: Fri, 16 Jul 2010 07:05:34 -0400
From: Tony Rutkowski <trutkowski@netmagic.com>
Organization: Netmagic Associates
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To: "Thomson, Martin" <Martin.Thomson@andrew.com>
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Cc: "Tschofenig, Hannes \(NSN - FI/Espoo\)" <hannes.tschofenig@nsn.com>, "earlywarning@ietf.org" <earlywarning@ietf.org>
Subject: Re: [earlywarning] Comments on draft-schulzrinne-atoca-requirements-00
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  Hi Martin,

You might also consider the concepts on architecture
and identity constructs that emerged from last year's
global gathering of emergency messaging authorities
convened at the World Meteorological Organization.
http://www.wmo.int/pages/prog/www/ISS/Meetings/WIS-CAP_Geneva2009/DocPlan.html

See especially the Draft Implementors Note.

best,
tony

> I'm currently unsure about the value of this document.  The different components of the document are somewhat disjointed: problem statement, architectural model, and requirements don't support each other particularly well.
>
> General Comments:
>
> This model presented in this document is highly abstract.  Without a more concrete relationship with the requirements, it's hard to understand the value of the model.  Section 3 looks too much like a copy-and-paste from the email architecture.
>
> A simpler model might be a better starting point:
>    author [1..*] ->  [1] aggregator [1] ->  [1..*] recipient
>
> Such a model can be evolved to involve relays or mediators by overlapping and chaining roles, just as we do for the GEOPRIV model.  Nothing wrong with giving these entities names and descriptions, but they can form part of a second architectural layer.
>