Re: [netmod] WG adoption poll draft-bjorklund-netmod-rfc7227bis-00

Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Tue, 19 September 2017 11:40 UTC

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Date: Tue, 19 Sep 2017 13:40:26 +0200
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Ladislav Lhotka <lhotka@nic.cz>
Cc: netmod@ietf.org
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Subject: Re: [netmod] WG adoption poll draft-bjorklund-netmod-rfc7227bis-00
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I believe that starting a new model would cause a real pain since any
model augmentations now need to augment two differnet versions of the
IP model. (Actually any model references may cause extra work.)

I also believe that view that NMDA is for big gear but not for small
gear is not quite right. Differences between operational state and
config state exists in almost all systems I have seen. The /foo and
/foo-state approach came out of long discussions about how to model
interfaces (Lada should recall this) and it was kind of clear even
back then that /foo and /foo-state was just a 'hack', given the
specifications we had to work with. NMDA simplifies models and we
would be failing badly if we now start maintaining multiple versions
of models.

/js

On Tue, Sep 19, 2017 at 11:46:57AM +0200, Ladislav Lhotka wrote:
> Hi,
> 
> I support the adoption but I propose two conceptual changes:
> 
> 1. Introduce a new module name and namespace so that it is not necessary to
> carry along the deprecated baggage. If readability is the primary concern, this
> is IMO the way to go. Instead of "ietf-ip-2", I'd suggest something like "ietf-
> ip-nmda".
> 
> 2. Avoid obsoleting RFC 7277. I believe the old modules may continue to be used
> in areas where NMDA is an overkill, such as open source home routers. NMDA
> implementors should be aware of the new modules but there is no need to
> eradicate the old data models.
> 
> #2 applies also to other modules for which the NMDA version is underway.
> 
> Lada
> 
> PS. The subject is wrong, it shoud be -rfc7277bis-
>  
> Lou Berger píše v Po 18. 09. 2017 v 10:33 -0400:
> > All,
> > 
> > This is start of a two week poll on making
> > draft-bjorklund-netmod-rfc7227bis-00 a working group document. Please
> > send email to the list indicating "yes/support" or "no/do not support".
> > If indicating no, please state your reservations with the document.  If
> > yes, please also feel free to provide comments you'd like to see
> > addressed once the document is a WG document.
> > 
> > The poll ends Oct 2.
> > 
> > Thanks,
> > 
> > Lou (and Kent)
> > 
> > _______________________________________________
> > netmod mailing list
> > netmod@ietf.org
> > https://www.ietf.org/mailman/listinfo/netmod
> -- 
> Ladislav Lhotka
> Head, CZ.NIC Labs
> PGP Key ID: 0xB8F92B08A9F76C67
> 
> _______________________________________________
> netmod mailing list
> netmod@ietf.org
> https://www.ietf.org/mailman/listinfo/netmod

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>