[Pce] Re: Early code point allocation for draft-ietf-pce-sid-algo-10

Dhruv Dhody <dd@dhruvdhody.com> Mon, 24 June 2024 08:21 UTC

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From: Dhruv Dhody <dd@dhruvdhody.com>
Date: Mon, 24 Jun 2024 09:20:52 +0100
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To: tom petch <ietfc@btconnect.com>
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CC: "pce@ietf.org" <pce@ietf.org>, pce-chairs <pce-chairs@ietf.org>, "draft-ietf-pce-sid-algo@ietf.org" <draft-ietf-pce-sid-algo@ietf.org>
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Subject: [Pce] Re: Early code point allocation for draft-ietf-pce-sid-algo-10
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Hi Tom,

On Sat, Jun 22, 2024 at 12:25 PM tom petch <ietfc@btconnect.com> wrote:

> From: Dhruv Dhody <dd@dhruvdhody.com>
> Sent: 22 June 2024 09:41
> Hi WG,
> We have received a request from the authors of draft-ietf-pce-sid-algo for
> an early code point allocation for the codepoints listed in -
> https://www.ietf.org/archive/id/draft-ietf-pce-sid-algo-10.html#table-7
> These are the codepoints for the latest changes made to align with
> draft-ietf-lsr-flex-algo-bw-con as per -
> https://mailarchive.ietf.org/arch/msg/pce/U2AIec7Vk9LomZM-LlvhxGywQgA/
> The chairs would like to know if there are any objections to adding these
> new metric types and keeping a range aside for user defined metrics.
> <tp>
> Looking at what I think is the right table, I see that the value zero is
> reserved which I always think is a good start.  But this request allows the
> value of 255 as part of the range which I always think a bad idea.  I think
> that this, the maximum value, should be reserved e.g. lest the range is
> fully assigned and a value is needed to act as an escape.  For such
> purposes, I think one value is enough so I think that the range should end
> at 254 nd tnot 255
Dhruv: Looking at our existing allocations at

We do not mark 255 (or equivalent MAX) as reserved.

If we want to do it, I prefer we discuss this independently and apply it
across all PCEP registries!
I will also write to IANA to find out if they have a suggestion on what
ought to be the best practice for this!


> Tom Petch
> Further, RFC 7120 requires one to meet the following criteria to proceed:
> b. The format, semantics, processing, and other rules related to
> handling the protocol entities defined by the code points
> (henceforth called "specifications") must be adequately described
> in an Internet-Draft.
> c. The specifications of these code points must be stable; i.e., if
> there is a change, implementations based on the earlier and later
> specifications must be seamlessly interoperable.
> If anyone believes that the draft does not meet these criteria or believes
> that early allocation is not appropriate for any other reason, please send
> an email to the PCE mailing list explaining why. If the chairs hear no
> objections by Monday, July 8th, we will kick off the early allocation
> request.
> Note that there was an earlier allocation request where some codepoints
> were already allocated by IANA -
> https://mailarchive.ietf.org/arch/msg/pce/8jv4slxI_K3p4qqUPRlAjSgScOA/
> Thanks!
> Dhruv & Julien