Re: [netmod] WG Last Call: draft-ietf-netmod-rfc6087bis-14

"Alexander Clemm" <> Tue, 17 October 2017 05:48 UTC

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From: Alexander Clemm <>
To: 'Kent Watsen' <>,
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Date: Mon, 16 Oct 2017 22:48:27 -0700
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Subject: Re: [netmod] WG Last Call: draft-ietf-netmod-rfc6087bis-14
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(Resending, apologies in case of duplicates)

I have reviewed some parts of the draft and have just a few comments as

-	One area where guidelines are missing, but where guidance would be
needed, concerns how to model return values from RPCs, as well as how to
model the handling of RPC error conditions.  This is an area where I think
YANG itself could need some improvement, and in its absence good guidelines
would be even more important.  
-	It would be also useful to provide guidelines regarding how to
augment/extend groupings.  This is a common scenario and what to do is not
necessarily intuitive, so I am sure many users would appreciate guidelines
-	Section 3.4: It would be good to provide a guideline regarding lines
that exceed 70 columns (from the pyang tree output), at least mention that
authors need to manually address this issue  
-	Section 3.7: Personally, I think the security considerations as
currently stated, while well-intended, introduce a bit too much red tape.
Specifically, this concerns having to list nodes individually - this can
lead to defining many "trees" while missing the "forest".  The guidelines
are a bit "rubbery" here, by the way, stating that data nodes MUST be
individually listed and discussed, at the same time only if they "could be
especially disruptive" - what does that mean - so maybe the requirement
should simply be a "SHOULD" here?  
-	Observation: there is no mention/guideline canonical order of YANG

--- Alex

-----Original Message-----
From: netmod [] On Behalf Of Kent Watsen
Sent: Tuesday, September 12, 2017 11:22 AM
Subject: [netmod] WG Last Call: draft-ietf-netmod-rfc6087bis-14

This starts a two-week working group last call on:

    Guidelines for Authors and Reviewers of YANG Data Model Documents

Please send email to the list indicating your support or concerns.

We are particularly interested in statements of the form:
  * I have reviewed this draft and found no issues.
  * I have reviewed this draft and found the following issues: ...

Thank you,

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