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Re: [Netconf] I-D Action: draft-ietf-netconf-rfc7895bis-05.txt

Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Tue, 06 March 2018 15:50 UTC

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Date: Tue, 06 Mar 2018 16:50:54 +0100
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Ladislav Lhotka <lhotka@nic.cz>
Cc: Robert Wilton <rwilton@cisco.com>, Martin Bjorklund <mbj@tail-f.com>, netconf@ietf.org
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Subject: Re: [Netconf] I-D Action: draft-ietf-netconf-rfc7895bis-05.txt
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On Tue, Mar 06, 2018 at 04:45:57PM +0100, Ladislav Lhotka wrote:
> 
> The server can include deviation modules in the YLbis "module" list. Now, the
> question is whether this is enough, no matter what the "deviation"
> leaf-lists say. It makes no sense to propose any text before we agree on
> the answer to this question.
>

The server is expected to list _all_ deviation modules that apply to a
given module. You do not agree with this?

> Note that one module can possibly include deviations for multiple target
> modules. An implementor may then decide to apply deviations only to some
> modules, and this can be effectively done through the "deviation"
> leaf-lists.

No, this is not how YANG works. There is no notion of a conditional
deviation depending on some external information.

The deviation leaf-list is a fast lookup mechanism so that a client
does not have to parse a potentially large set of modules for any
deviations. It does not change YANG semantics.

/js

-- 
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/>

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