From: Linda Dunbar <[email protected]>
Sent: 29 April 2021 15:27

Tom,

What you suggested seems pretty simple to fix. Hope the authors will address 
them soon.
p.s. the YANG doctor review  didn't mention using this style.

<tp>
Linda,

Yes. I notice that YANG doctors and I pick up on different things and also that 
different YANG doctors pick up on different things.  I did note that five 
drafts were reviewed by five different YANG doctors whereas my comments this 
week come from putting five I-D together to see how they fit and finding 
inconsistencies,or finding good practice in one I-D not in anoter  If one YANG 
doctor had reviewed all five they might have flagged more of what I have 
flagged (or may be not).  Thus I am keen on the choice of identifier, of its 
length, pattern, relationship to other identifiers and so on having experience 
of what I have found easy to use, easy to avoid making mistakes with and what 
not.  Some YANG doctors comment on this, e.g. on not having a suffix -grouping, 
-type, but others pass that by.

Tom Petch


Thank you very much.

Linda

-----Original Message-----
From: tom petch <[email protected]>
Sent: Thursday, April 29, 2021 5:24 AM
To: Linda Dunbar <[email protected]>; [email protected]
Subject: Re: [I2nsf] Closing the WGLC for 
draft-ietf-i2nsf-capability-data-model-16

From: Linda Dunbar <[email protected]>
Sent: 27 April 2021 16:49
Tom,

Can you please provide the concrete suggestions to the authors on the changes 
you like to see?

<tp>
Linda

I hope that you are still happy:-)

I thought some more (a bad habit of mine:-) about range and exact values and 
wonder why capability splits them into two separate identity.  This is not what 
the YANG modules say.

The usual way to model this is with a start and end and a comment that if only 
one value is required, then start equals end.  This is widely used throughout 
the IETF and is indeed used in draft-ietf-i2nsf-sdn-ipsec.... which has the 
approval of the IESG.

So, since the YANG always AFAICT allows both range and exact value, then why 
split them in capability?  Not wrong, but seems an unnecessary complication 
adding some 25 extra identity.

I can imagine a chip designer saying I can exact match at wire speed but not 
range match; but as I say, that is not what we have in the YANG.  It could be 
in the YANG e.g. as a feature but isn't in any IETF YANG module that I know of 
so chip designers are probably cleverer than I imagine!

Tom Petch

This is the second time of the WGLC for the draft. It would be very helpful to 
hear your suggestions during the WGLC window.

Thank you very much
Linda

-----Original Message-----
From: tom petch <[email protected]>
Sent: Tuesday, April 27, 2021 10:44 AM
To: Linda Dunbar <[email protected]>; [email protected]
Subject: Re: [I2nsf] Closing the WGLC for 
draft-ietf-i2nsf-capability-data-model-16


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