Re: [OPSAWG] [EXTERNAL] Externalize some data nodes for better flexibilty (RE: [Last-Call] Yangdoctors last call review of draft-ietf-opsawg-l2nm-07)

Moti Morgenstern <Moti.Morgenstern@rbbn.com> Tue, 05 October 2021 12:43 UTC

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From: Moti Morgenstern <Moti.Morgenstern@rbbn.com>
To: "mohamed.boucadair@orange.com" <mohamed.boucadair@orange.com>, "opsawg@ietf.org" <opsawg@ietf.org>, "adrian@olddog.co.uk" <adrian@olddog.co.uk>
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Thread-Topic: [EXTERNAL] [OPSAWG] Externalize some data nodes for better flexibilty (RE: [Last-Call] Yangdoctors last call review of draft-ietf-opsawg-l2nm-07)
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Archived-At: <https://mailarchive.ietf.org/arch/msg/opsawg/HTnYwHDbuUKkbYpZXiiZDKBkpYQ>
Subject: Re: [OPSAWG] [EXTERNAL] Externalize some data nodes for better flexibilty (RE: [Last-Call] Yangdoctors last call review of draft-ietf-opsawg-l2nm-07)
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Hi,

I think it's OK to manage the ES object via a separate module. 
It is very same approach as in https://datatracker.ietf.org/doc/html/draft-ietf-bess-evpn-yang-07 (which expired two years ago). 

Regards,
Moti

-----Original Message-----
From: OPSAWG <opsawg-bounces@ietf.org> On Behalf Of mohamed.boucadair@orange.com
Sent: Tuesday, October 5, 2021 3:22 PM
To: opsawg@ietf.org; adrian@olddog.co.uk
Cc: draft-ietf-opsawg-l2nm.all@ietf.org
Subject: [EXTERNAL] [OPSAWG] Externalize some data nodes for better flexibilty (RE: [Last-Call] Yangdoctors last call review of draft-ietf-opsawg-l2nm-07)

Hi all, 

Lada made a comment about the flexibility of the module (see below). A proposal to address the comment is to move the ethernet segment part into a separate module as suggested in the following PR: https://clicktime.symantec.com/3QU3R71WM87hLHH56QkYggD6H2?u=https%3A%2F%2Fgithub.com%2FIETF-OPSAWG-WG%2Flxnm%2Fpull%2F349%2Ffiles. The change is straightforward and has the merit to preserve the same global structure for both L2NM and L3NM. 

Please review the PR and share your thoughts. 

Of course, do no change is still an option.

Cheers,
Med

> >> -----Message d'origine-----
> >> De : Ladislav Lhotka via Datatracker <noreply@ietf.org> Envoyé :
> >> mardi 5 octobre 2021 10:04 À : yang-doctors@ietf.org Cc :
> >> draft-ietf-opsawg-l2nm.all@ietf.org; last-call@ietf.org; 
> >> opsawg@ietf.org Objet : Yangdoctors last call review of
> >> draft-ietf-opsawg-l2nm-07
> >>
> >> Reviewer: Ladislav Lhotka
> >> Review result: Ready with Issues
> >>
> >> **** General comments
> >>
> >> The ietf-l2vpn-ntw module with about 400 data nodes represents an 
> >> impressive amount of work. Its size, however, raises some concerns 
> >> in terms of manageability. For example, if the ITU-T Y-1731 
> >> recommendation ever gets updated (I don't know how likely this is), 
> >> the module will have to be updated.
> >> I would therefore suggest to consider factoring out such parts into 
> >> separate modules.
> >
> > [Med] We have already made an effort to factorize many items in:
> > * I-D.ietf-vpn-common
> > * two separate IANA-maintained modules
> >
> > One candidate "externalization" that I think would work to address 
> > your
> concern is to move ethernet-segments (and esi types) into a separate 
> module.
> >
> > I have a preference to work in that direction vs. touching the OAM part.
> >
> > Would that solve your concern? Thank you.
> 
> I think it is up to the authors and WG to consider what to do, maybe 
> nothing. I am not an expert in this domain, so I have no strong 
> opinion, but it is certainly better to think twice because the module 
> structure cannot be easily changed afterwards.



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