Hi Rob,

We can certainly look through the draft and get back to you. While I believe 
this work is not scheduled, when would you like a reply by to keep the project 
moving? Has any date been set for a discussion on the next step(s)?

Regards,

William

--
William Ivory (he/him)
Routing / IP Software Engineer 4 | Ciena
Edinburgh, Scotland
[cid:[email protected]]

From: Rob Wilton (rwilton) <[email protected]>
Sent: 26 May 2026 13:03
To: Ivory, William <[email protected]>; NetMod WG <[email protected]>
Subject: [**EXTERNAL**] Re: YANG 2.0 contents

Hi William,

Perhaps have a read of 
https://www.ietf.org/archive/id/draft-wilton-netmod-yang-next-agreement-00.html 
[ietf.org]<https://urldefense.com/v3/__https:/www.ietf.org/archive/id/draft-wilton-netmod-yang-next-agreement-00.html__;!!OSsGDw!MOxKZWy07mMRo2RgzzUi7uzAKdQe3856I_jPhQfVPrHCtioPojROnOV_S-TXvhCJGbuY2YLpAyNSBOYK5UA4hciFhqF-$>,
 https://datatracker.ietf.org/doc/draft-wilton-netmod-yang-next-agreement/ 
[datatracker.ietf.org]<https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/draft-wilton-netmod-yang-next-agreement/__;!!OSsGDw!MOxKZWy07mMRo2RgzzUi7uzAKdQe3856I_jPhQfVPrHCtioPojROnOV_S-TXvhCJGbuY2YLpAyNSBOYK5UA4hdoXgkZR$>

Once you have read the intro and background, perhaps you can indicate whether 
you agree will all the issues listed in section 2 should be included (or at 
least investigated) for YANG 2.0, or do you think some things should move out?  
Are there issues in section 3, 4, or 5 that you believe should be in different 
sections, and in particular, absolutely must be YANG 2.0?

If we can have some discussions and reach consensus on which issues should end 
up where then I think that will help ensure that everyone is on the same page 
as to what a YANG 2.0 should look like, or at least, that is the aim/goal of my 
document.

Kind regards,
Rob



From: Ivory, William 
<[email protected]<mailto:[email protected]>>
Date: Wednesday, 20 May 2026 at 17:23
To: Andy Bierman <[email protected]<mailto:[email protected]>>; NetMod WG 
<[email protected]<mailto:[email protected]>>
Subject: [netmod] YANG 2.0 contents
Hi,

General consensus at Ciena is also that this work needs to be focused on a few 
key principles rather than just an effort to implement all the items on the 
issue list. For example:


  *   What do operators really need that's not in YANG 1.1?
  *   What is proving impractical for vendors to implement reliably / 
consistently / efficiently that could be sensibly redesigned?

Regards,

William

--

William Ivory (he/him)
Routing / IP Software Engineer | Ciena
Edinburgh, Scotland
[cid:[email protected]]

From: Andy Bierman <[email protected]<mailto:[email protected]>>
Sent: 09 May 2026 19:28
To: NetMod WG <[email protected]<mailto:[email protected]>>
Subject: [**EXTERNAL**] [netmod] YANG 2.0 contents

Hi,

I am concerned that this work item is essentially a blank check called YANG 2.0.

There is an issue list of course:
https://github.com/netmod-wg/yang-next/issues 
[github.com]<https://urldefense.com/v3/__https:/github.com/netmod-wg/yang-next/issues__;!!OSsGDw!Kr88KsficTnDqivvxfvqow0MKyGTXeasfYNN0yIDyqQk8IYSyzpdPyfh1qOc5PgOJpmXEIEl5BPc$>

I wrote a summary as an issue in Nov 2024:
https://github.com/netmod-wg/yang-next/issues/152 
[github.com]<https://urldefense.com/v3/__https:/github.com/netmod-wg/yang-next/issues/152__;!!OSsGDw!Kr88KsficTnDqivvxfvqow0MKyGTXeasfYNN0yIDyqQk8IYSyzpdPyfh1qOc5PgOJpmXEGLd2fL9$>

It would be better to have some WG consensus on the contents of YANG 2.0
than to just adopt starting point drafts with no idea what the finished drafts 
look like.
I am not in favor of asking the world to learn a new version of YANG after 12 
or 15 years
unless it is a big improvement over 1.1.


Andy


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