Re: [Rats] EAT claims needed by TEEP

Michael Richardson <mcr+ietf@sandelman.ca> Thu, 11 November 2021 13:43 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: teep <teep@ietf.org>, "rats\@ietf.org" <rats@ietf.org>
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Date: Thu, 11 Nov 2021 08:43:31 -0500
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Subject: Re: [Rats] EAT claims needed by TEEP
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Thomas Fossati <tho.ietf@gmail.com> wrote:
    > Besides, it looks like we'd be creating a bad precedent because then one
    > could easily argue that *every* claim is possibly just a byte string or,
    > pushing this line of reasoning just a bit further, the whole claims-set
    > could be seen as one single gigantic opaque claim.

! make me think about the multiple levels of "comment" that occured in the
JCL days, where commands were comments...

Brendan Moran <Brendan.Moran@arm.com> wrote:
    > Strings are not the right choice for machine readable fields. There are
    > extremely good reasons not to use them. Please do not use strings for
    > model IDs.

    > When you have a string, it is inevitable that someone in marketing will
    > realise that it’s human-readable. The next step is that it must be
    > controlled to preserve brand image. When this happens, it is also
    > inevitable that *wildly incompatible hardware* with *the same function*
    > will be forced into the same “model number.”

This has happened multiple times out there.
Same box, same case, entirely different CPU inside.

    > By making model identification explicitly non-parseable by humans, we
    > prohibit its use as a controllable, human facing identifier. This
    > ensures that it has a better chance of being used correctly as a means
    > to distinguish between mutually incompatible versions.

!

mcr suggested>

  "There is no global scheme or format for this claim."
    ->
  "The format for this scheme will need to be specified within profiles that use it."


--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide