Re: [Ntp] Antw: [EXT] Re: Publication has been requested for draft-ietf-ntp-yang-data-model-09

Harlan Stenn <stenn@nwtime.org> Mon, 24 August 2020 22:00 UTC

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To: Dhruv Dhody <dhruv.ietf@gmail.com>
Cc: Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de>, Rich Salz <rsalz=40akamai.com@dmarc.ietf.org>, "ntp@ietf.org" <ntp@ietf.org>
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From: Harlan Stenn <stenn@nwtime.org>
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Date: Mon, 24 Aug 2020 14:59:59 -0700
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Subject: Re: [Ntp] Antw: [EXT] Re: Publication has been requested for draft-ietf-ntp-yang-data-model-09
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Hi Dhruv,

On 8/24/2020 10:38 AM, Dhruv Dhody wrote:
> Hi Harlan,
> 
>> - The described elements are likely minimally useful.
>> - A larger set of elements would be significantly better.
> 
> It is a common approach in IETF to publish the minimal YANG model as a
> base. Further, these can be augmented easily. This is one of the key
> features of YANG.

And that's fine.

>> - I see no guidance in the document about how
>>   implementation-specific elements should be handled.
> 
> This comment is applicable to any YANG model published in IETF and it
> is well covered by the YANG specification itself. See
> https://tools.ietf.org/html/rfc7950#section-4.2.8.

As a likely implementor, I would appreciate a pointer in the document
that directed me to this guidance.

The IANA recommendation in section  9 simply describes the top-level
"ntp" prefix, and then there are a number of normative reference
documents in 12.1 and 2 informative references in 12.2

What would you think about perhaps moving the content of section 7, the
set of minimally-expected elements, to section 7.1, and adding 7.2 as
short direction of what a vendor-specific sub-prefix (there's probably a
better name for that) would look like and where that would be registered?

>> - I see it as a bug that there is no reference implementation.
>>
> 
> The shepherd report notes that vendor implementation is in the
> planning stages. As usual, the IESG would take that into
> consideration.

Is the "vendor implementation" you describe the same as a reference
implementation?

> Thanks!
> Dhruv
> 

-- 
Harlan Stenn <stenn@nwtime.org>
http://networktimefoundation.org - be a member!