Re: [netmod] [Netconf] LC of NDMA NETCONF/RESTCONF drafts

Andy Bierman <andy@yumaworks.com> Thu, 08 February 2018 22:34 UTC

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From: Andy Bierman <andy@yumaworks.com>
Date: Thu, 8 Feb 2018 14:34:19 -0800
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To: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>, Andy Bierman <andy@yumaworks.com>, Martin Bjorklund <mbj@tail-f.com>, Netconf <netconf@ietf.org>, NetMod WG <netmod@ietf.org>
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Subject: Re: [netmod] [Netconf] LC of NDMA NETCONF/RESTCONF drafts
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On Thu, Feb 8, 2018 at 11:00 AM, Juergen Schoenwaelder <
j.schoenwaelder@jacobs-university.de> wrote:

> On Thu, Feb 08, 2018 at 10:55:53AM -0800, Andy Bierman wrote:
> > On Thu, Feb 8, 2018 at 10:44 AM, Juergen Schoenwaelder <
> > j.schoenwaelder@jacobs-university.de> wrote:
> >
> > > On Thu, Feb 08, 2018 at 09:11:58AM -0800, Andy Bierman wrote:
> > > > >
> > > > Then remove the text that says an error is sent if with-defaults
> > > attempted
> > > > on <operational>.
> > > > None of this new text needs to go into NMDA. It can be a
> vendor-specific
> > > > mystery what gets set as origin=default.  Implementors can read RFC
> 6243
> > > > and figure it out on their own.
> > >
> > > As I said, I am absolutely fine with the option of being silent about
> > > with-defaults and if needed someone can spin an update of RFC 6243.
> >
> > This is not needed.
> >
> >
> >    If the "with-defaults" parameter
> >    is present in a request to such a datastore, then the server MUST
> >
> >       return an error, as specified in "ietf-netconf-nmda" (see Section 4
> > <https://tools.ietf.org/html/draft-ietf-netconf-nmda-
> netconf-03#section-4>).
> >
> >
> >          The 'with-defaults' parameter does not apply to operational
> >          datastores. If the 'with-defaults' parameter is present in a
> >          request to an operational datastore, then the server MUST
> >          return an <rpc-error> element with an <error-tag> value of
> >          'invalid-value'.";
> >
> >
> >
> > There are 2 places in the draft that say MUST send an error.
> > You need to add detailed text explaining what "harm to the Internet"
> > is caused if this parameter is accepted. You cannot use MUST
> > unless interoperability is harmed by allowing a server to
> > omit response data containing the YANG default value.
> > Please explain all the problems solved by this MUST constraint.
> >
> >
> > Please explain in detail in the draft WHY
> >
> >          The 'with-defaults' parameter does not apply to operational
> >          datastores.
> >
> > This assertion is false.
>
> I don't get your message. Trying again: I am fine to remove all text
> that talks about with-default and if needed someone can spin an update
> of RFC 6243 to use with-default.
>


It is now clear that the current "trim" and "report-all-tagged" enums apply
to <operational>.
These retrieval options apply to config=false nodes for <get>.
It is not clear why <get-data> is removing this functionality for
config=false nodes.



>
> /js
>


Andy



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