Re: [OPSAWG] Yangdoctors last call review of draft-ietf-opsawg-l2nm-07

"Joe Clarke (jclarke)" <jclarke@cisco.com> Tue, 05 October 2021 12:20 UTC

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From: "Joe Clarke (jclarke)" <jclarke@cisco.com>
To: Ladislav Lhotka <ladislav.lhotka@nic.cz>, "mohamed.boucadair@orange.com" <mohamed.boucadair@orange.com>, "yang-doctors@ietf.org" <yang-doctors@ietf.org>
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Thread-Topic: Yangdoctors last call review of draft-ietf-opsawg-l2nm-07
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Archived-At: <https://mailarchive.ietf.org/arch/msg/opsawg/ehxlj2LVpGnkX9T9pSazECMK8NY>
Subject: Re: [OPSAWG] Yangdoctors last call review of draft-ietf-opsawg-l2nm-07
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Thank you for you review, Lada.
>>> **** 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.

Agreed.  I'd like to hear other thoughts from the WG (and other authors)
on how/if this modularization should be done.

Joe