Re: [Netconf] Last Call: <draft-ietf-netconf-rfc7895bis-06.txt> (YANG Library) to Proposed Standard

"t.petch" <ietfc@btconnect.com> Mon, 02 July 2018 15:01 UTC

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Subject: Re: [Netconf] Last Call: <draft-ietf-netconf-rfc7895bis-06.txt> (YANG Library) to Proposed Standard
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----- Original Message -----
From: "Robert Wilton" <rwilton@cisco.com>
Sent: Monday, July 02, 2018 11:51 AM


> Hi Tom,
>
> It is entirely up to the server implementation to decide what modules
> should be put together into a single module set.
>
> Some examples of categories that could be used to group different
> related modules together:
>
> (i) Modules that are common across all datastores, vs modules that are
> only used for particular datastores (e.g. a dynamic datastore).
>
> (ii) Modules for different versions of software could be reported as
> separate module sets. Only the module set(s) associated with a
> particular software version would expect to be used. This hypothetical
> example is from the YANG versioning work, and may or may not become a
> recommendation depending on how that work pans out ...
>
> (iii) Sometimes vendors want to split their software up into separate
> packages, and module sets could be used to represent these different
> packages (e.g. core, vs L2VPN, vs L3VPN, vs Subscribers, etc).
>
> (iv) Sometimes devices need to support different schemas at the same
> time (e.g. The IETF ecosystem, vs OpenConfig ecosystem, vs vendor
native
> ecosystem). Again, this is another case where module sets may be
useful
> to differentiate between the different groups.
>
> Of course, if a server is very simple, and none of the above applies,
> then it could choose to have just a single module set.
>
> Does that help clarify their potential usage?

Robert, Juergen

Yes; in which case, I suggest adding a line to that effect.

NEW s.3 after "... (and their submodules) used only for imports."

The assignment of a module to a module-set is at the user's discretion.
YANG library attaches no semantics as to which module-set a module is
listed in.

Tom Petch



> Thanks,
> Rob
>
>
> On 02/07/2018 11:32, t.petch wrote:
> > One aspect of this leaves me puzzled; what is a module set?
> >
> > Yes, I see that a data store schema is made up of module sets, which
are
> > made up of modules, but given, say, 40 modules, what criteria decide
> > whether this is one set of 40, two of 20, half a dozen of varying
size
> > or what?
> >
> > Tom Petch
> >
> >
> > ----- Original Message -----
> > From: "The IESG" <iesg-secretary@ietf.org>
> > To: "IETF-Announce" <ietf-announce@ietf.org>
> > Cc: <ibagdona@gmail.com>om>; <mjethanandani@gmail.com>om>;
> > <netconf-chairs@ietf.org>rg>; <draft-ietf-netconf-rfc7895bis@ietf.org>rg>;
> > <netconf@ietf.org>
> > Sent: Thursday, June 14, 2018 5:22 PM
> >
> >> The IESG has received a request from the Network Configuration WG
> > (netconf)
> >> to consider the following document: - 'YANG Library'
> >>    <draft-ietf-netconf-rfc7895bis-06.txt> as Proposed Standard
> >>
> >> The IESG plans to make a decision in the next few weeks, and
solicits
> > final
> >> comments on this action. Please send substantive comments to the
> >> ietf@ietf.org mailing lists by 2018-06-28. Exceptionally, comments
may
> > be
> >> sent to iesg@ietf.org instead. In either case, please retain the
> > beginning of
> >> the Subject line to allow automated sorting.
> >>
> >> Abstract
> >>
> >>
> >>     This document describes a YANG library that provides
information
> >>     about the YANG modules, datastores, and datastore schemas used
by a
> >>     network management server.  Simple caching mechanisms are
provided
> > to
> >>     allow clients to minimize retrieval of this information.  This
> >>     version of the YANG library supports the Network Management
> > Datastore
> >>     Architecture by listing all datastores supported by a network
> >>     management server and the schema that is used by each of these
> >>     datastores.
> >>
> >>     This document obsoletes RFC 7895.
> >>
> >>
> >>
> >>
> >> The file can be obtained via
> >> https://datatracker.ietf.org/doc/draft-ietf-netconf-rfc7895bis/
> >>
> >> IESG discussion can be tracked via
> >>
https://datatracker.ietf.org/doc/draft-ietf-netconf-rfc7895bis/ballot/
> >>
> >>
> >> No IPR declarations have been submitted directly on this I-D.
> >>
> >>
> >>
> >>
> > .
> >
>