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Re: [netmod] [Anima] mcr's YANG question raised during the ANIMA WG session

"Fries, Steffen" <steffen.fries@siemens.com> Fri, 29 July 2022 13:24 UTC

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From: "Fries, Steffen" <steffen.fries@siemens.com>
To: Michael Richardson <mcr+ietf@sandelman.ca>, "Anima@ietf.org" <anima@ietf.org>
CC: "netmod@ietf.org" <netmod@ietf.org>
Thread-Topic: [Anima] mcr's YANG question raised during the ANIMA WG session
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Archived-At: <https://mailarchive.ietf.org/arch/msg/netmod/I-_GF2bp4CjPEManvbP7_dXknJA>
Subject: Re: [netmod] [Anima] mcr's YANG question raised during the ANIMA WG session
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Hi Michael,

Thank you for the clarification. This means we don't have to change anything in either BRSKI-PRM and constraint voucher, resp. in the general approach we use the voucher.

Best regards
Steffen

> -----Original Message-----
> From: Anima <anima-bounces@ietf.org> On Behalf Of Michael Richardson
> Sent: Donnerstag, 28. Juli 2022 20:46
> To: Anima@ietf.org
> Cc: netmod@ietf.org
> Subject: Re: [Anima] mcr's YANG question raised during the ANIMA WG
> session
> 
> 
>     A---------> B
>      \          .
>       \          .
>        \          .
>         V          V
>         C . . . . > D
> 
> 
> I had lunch with Rob today and explained the situation.
> There are two answers!
> 
> If D is a new YANG module (/RFC) that wants to
>      augment B
> and  augment C
> 
> then it just works, and it's okay to say:
>      augment "B" {}
>      augment "C" {}
> 
> I was worried that this would *not* allowed.
> 
> i.e. D might not even add anything, although maybe it refines existing
>      things.
> 
> There is, however, another way to build a "D" that does not add anything,
> which is using
> 
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatat
> racker.ietf.org%2Fdoc%2Fdraft-ietf-netmod-yang-
> packages%2F&amp;data=05%7C01%7Csteffen.fries%40siemens.com%7C2f6
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> 
> In the context of ANIMA, A=>rfc8366, B=>brski-prm, C=>constrained-
> voucher.
> D=>a mythical constrianed-brski-prm.  Whether or not D needs an RFC
> because it creates new semantics is a different question.  {It might need an
> RFC for trade agreement reasons though}
> 
> 
> --
> Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
> -= IPv6 IoT consulting =-
> 
>

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