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Re: [yang-doctors] Review of draft-wu-l3sm-rfc8049bis?

Lou Berger <lberger@labn.net> Thu, 05 October 2017 14:35 UTC

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To: adrian@olddog.co.uk, 'YANG Doctors' <yang-doctors@ietf.org>
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From: Lou Berger <lberger@labn.net>
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Date: Thu, 05 Oct 2017 10:35:18 -0400
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Archived-At: <https://mailarchive.ietf.org/arch/msg/yang-doctors/Gp1Hnm_vzFUvg8BCvf5a2tQDJAI>
Subject: Re: [yang-doctors] Review of draft-wu-l3sm-rfc8049bis?
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On 10/5/2017 9:56 AM, Adrian Farrel wrote:
>> Thanks for the background.  We have a somewhat similar situation going
>> on right now with rfc 8022 (been out a short time, no shipping
>> implementations, *but* update motivated by need to be updated to NMDA
>> compatible form).  In that case, we're headed down a path of deprecating
>> the old modules and issuing a replacement '-2' version.  Would it make
>> sense to do a similar thing here and just rename the module (to
>> ietf-l3vpn-svc-2) and thereby conform with YANGs compatibility requirement?
> I have no strong opinion either way.
>
> Given that 8049 can't be implemented, I'm not sure that the module it specifies actually exists at all.
>
> I'm really happy to be guided by anyone who does have a strong opinion.

I don't have a strong opinion, but am concerned about the precedent it
establishes WRT how we handle other incompatible module changes.  If we
open the door on this change, what was a hard rule becomes
subjective/open to interpretation...

Lou

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