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[core] Re: Coreconf Notifications

Alex Huang Feng <alex.huang-feng@insa-lyon.fr> Thu, 25 July 2024 20:58 UTC

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From: Alex Huang Feng <alex.huang-feng@insa-lyon.fr>
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Date: Thu, 25 Jul 2024 13:58:20 -0700
In-Reply-To: <C028C265-1624-4599-A0AC-64E075900275@tzi.org>
To: Carsten Bormann <cabo@tzi.org>
References: <E2DFFA8E-9766-4CB4-BCAA-6897402B8FB2@insa-lyon.fr> <5C0595E7-2071-4A6F-A0C8-6F9DE138535F@tzi.org> <C4AE55E1-0907-4BBD-A2BA-802063E10B50@insa-lyon.fr> <397772B6-6DAE-4A2D-BFD0-7A77ABE1415E@tzi.org> <E0D2CFE6-B0BD-4F0A-9F5C-4C29ADF16861@insa-lyon.fr> <CABCOCHT6B+9fjJL_UBArfcV1KO9SJBoV+588goWsDJ5_x_1x0A@mail.gmail.com> <0e37cbe90758409fae2a8f6763ffc986@swisscom.com> <C028C265-1624-4599-A0AC-64E075900275@tzi.org>
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CC: "Thomas. Graf" <Thomas.Graf@swisscom.com>, draft-ietf-core-comi@ietf.org, core@ietf.org, Pierre Francois <pierre.francois@insa-lyon.fr>, Vivekananda Boudia <vivekananda.boudia@insa-lyon.fr>, benoit.claise@huawei.com
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Subject: [core] Re: Coreconf Notifications
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Dear Carsten,

Inline.

> On 25 Jul 2024, at 04:08, Carsten Bormann <cabo@tzi.org> wrote:
> 
> On 2024-07-24, at 21:27, Thomas.Graf@swisscom.com wrote:
>> 
>> We are proposing with https://datatracker.ietf.org/doc/html/draft-ahuang-netconf-notif-yang to define the transport agnostic notification header as mentioned in the last line of section 5 of charter 19.
> 
> There is a rather ominous line in the YANG:
> 
>> Implementations must support time zones.
> 
> This probably makes this YANG module inapplicable to CORECONF.

“Implementations must support time zones” comes from RFC5277 [https://datatracker.ietf.org/doc/html/rfc5277#section-2.2.1]
What draft-ahuang-netconf-notif-yang is trying to solve is defining the structure of the notification in a YANG model so that YANG tooling can use the YANG module to validate Notifications rather than relying on just text.
And the reason draft-ahuang-netconf-notif-yang goes up to RFC5277 is because YANG has until now relied on this RFC5277 to define how such notifications are encoded.

Note also that in RFC6991, the date-and-time type, the timezone is included.

Our comments to draft-ietf-core-comi are because in section 3.4 (https://datatracker.ietf.org/doc/html/draft-ietf-core-comi-18#name-event-stream) the authors reference 5277 even though the model is defined in XML only.
So, we suggest to the authors to change that reference to draft-ahuang-netconf-notif-yang to have a common model also in CORECONF.

Regards,
Alex

> 
> Does anyone know why this is in there?
> 
> Grüße, Carsten
>

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