Re: [netmod] FW: a question about ietf-hardware yang module

Martin Bjorklund <mbj@tail-f.com> Tue, 25 June 2019 07:56 UTC

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Date: Tue, 25 Jun 2019 09:56:09 +0200 (CEST)
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Subject: Re: [netmod] FW: a question about ietf-hardware yang module
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Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> wrote:
> On Tue, Jun 25, 2019 at 09:13:51AM +0200, Martin Bjorklund wrote:
> > Hi,
> > 
> > I don't understand what is unclear about the current descriptions.  Is
> > it the relations to the MIB objects that are unclear or is it the
> > descriptions in the YANG module?  The original question was:
> > 
> >   My question is whether only configuration change of hardware
> >   component will cause the update of /hardware/last-change?
> > 
> > The answer is clearly "no", since /hardware/last-change says:
> > 
> >         "The time the '/hardware/component' list changed in the
> >          operational state.";
> > 
> > and this list has e.g.:
> > 
> >            When the server detects a new hardware component, it
> >            initializes a list entry in the operational state.
> > 
> > So it is clear that if a hardware component is added (not a
> > configuration change) this list is changed, and last-change is
> > updated.
> 
> I think the ambiguity is 'list changed' - does this mean that list
> entries are added/removed or does it include also the case where a
> property of a list entry has changed.

Ok.  Yes it is supposed to mean entry added/removed/modified.

But I can see another unclear thing - suppose I augment in an
addtional leaf from my own model into this list.  Should last-change
be updated if this new leaf is changed?


> The relationship to
> entLastChangeTime is also not clear to me.

Perhaps that's why it isn't listed in the table ;-)


/martin


> 
> /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/>
>