Re: [i2rs] Kathleen Moriarty's No Objection on draft-ietf-i2rs-yang-l3-topology-08: (with COMMENT)

[Alia Atlas <[e-mail]>]

Juergen,

On Wed, Jan 25, 2017 at 9:52 AM, Juergen Schoenwaelder <
[e-mail]> wrote:

> On Wed, Jan 25, 2017 at 08:35:53AM -0500, Alia Atlas wrote:
> > Could one of you who are saying that a writable topology model can appear
> > in the regular configuration data-store please explain:
> >
> > How does validation at reboot work when there is dependency on learned
> > topology data that isn't yet available?
>
> A configuration datastore never has a dependency on state data.
> Validation is scoped by a datastore. A configuration datastore that is
> valid before a report is going to be valid after a reboot. These are
> core principles of how NETCONF and YANG work.
>
> For the larger picture how information flows from configuration
> datastores to the actual operational state, see the conceptual
> datastore discussions in NETMOD.


Thank you for confirming my understanding.

So - if one has models - such as a writable topology - where there can be
dependencies on dynamic data, then those models can't be in the
configuration
data-store as currently defined.

Regards,
Alia


> /js
>
> --
> Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> Phone: [phone]         Campus Ring 1 | 28759 Bremen | Germany
> Fax:   [phone]         <http://www.jacobs-university.de/>
>