Re: [netmod] two options for removing /foo-state trees?

"Acee Lindem (acee)" <acee@cisco.com> Thu, 07 September 2017 14:54 UTC

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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Lou Berger <lberger@labn.net>, Martin Bjorklund <mbj@tail-f.com>, "kwatsen@juniper.net" <kwatsen@juniper.net>
CC: "netmod@ietf.org" <netmod@ietf.org>
Thread-Topic: [netmod] two options for removing /foo-state trees?
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Date: Thu, 07 Sep 2017 14:54:18 +0000
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References: <D94B3E90-8676-4790-A186-84CB7DC18B49@juniper.net> <20170906.200545.1646568136744118938.mbj@tail-f.com> <9acc6055-c7b0-8c80-3468-72b090b9253f@labn.net>
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Subject: Re: [netmod] two options for removing /foo-state trees?
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Ok - it is less painful if we only have to deprecate the *-state nodes.
However, what about secondary and tertiary implications of moving to NDMA?
If we change a path from “interface-state-ref” to “interface-ref” to
reference an interface, I’d hope no one would expect the old statement to
be kept around… 

Thanks,
Acee 

On 9/7/17, 10:40 AM, "netmod on behalf of Lou Berger"
<netmod-bounces@ietf.org on behalf of lberger@labn.net> wrote:

>
>
>On 9/6/2017 2:05 PM, Martin Bjorklund wrote:
>> Kent Watsen <kwatsen@juniper.net> wrote:
>>> ...
>
>>>  2) a new module name forces an update to other modules that
>>>     importing it (e.g., to resolve XPaths), that otherwise may
>>>     not need to be updated.
>> This is a major drawback!
>I think this is a compelling consideration.
>
>>
>>>  3) the approach doesn't follow what draft-dsdt-nmda-guidelines
>>>     says in guideline (c), but this seems to be a minor point.
>>>  4) republishing the old module with all nodes deprecated seems
>>>     off, but 7950 doesn't list 'status' as a substatement to
>>>     the 'module' statement, so what else can we do?
>>>
>>> Any other pros or cons?
>
>I think a pro is that for models that are not widely implemented or
>referenced, they are more aligned with how we expect new NMDA-compatible
>models to be structured.
>
>>>
>>>
>>> Another question is if all the modules have to be updated the
>>> same way
>> In general I'd say no.  An entirely new module might be the right
>> approach in some cases, but in the majority of cases not.
>I'd go the other way on this: the deprecate/obsolete/update approach
>should be followed for the few modules that are widely referenced.  All
>other modules should be replaced (via a name change) with NMDA
>structured modules.
>
>> For the routing modules, I don't think a new name is worth it.
>Do you see it as widely implemented?  Do others agree?
>
>>
>> /martin
>>
>>
>>> (which could block adoption of these drafts until we
>>> settled on an approach), or do we let each module update in a
>>> way that suites it best base on, e.g., how deployed it is, how
>>> often it's been imported by other drafts, etc.  Thoughts?
>>>
>>>
>>> Kent  // contributor
>>>
>>>
>>>
>...
>
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