Re: [CCAMP] Last Call: <draft-ietf-ccamp-layer0-types-06.txt> (A YANG Data Model for Layer 0 Types) to Proposed Standard

tom petch <ietfc@btconnect.com> Wed, 23 September 2020 16:29 UTC

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From: tom petch <ietfc@btconnect.com>
To: Zhenghaomian <zhenghaomian@huawei.com>, tom petch <daedulus@btconnect.com>
CC: "ccamp@ietf.org" <ccamp@ietf.org>, "ccamp-chairs@ietf.org" <ccamp-chairs@ietf.org>, "draft-ietf-ccamp-layer0-types@ietf.org" <draft-ietf-ccamp-layer0-types@ietf.org>
Thread-Topic: Last Call: <draft-ietf-ccamp-layer0-types-06.txt> (A YANG Data Model for Layer 0 Types) to Proposed Standard
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Date: Wed, 23 Sep 2020 16:29:34 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ccamp/ZzxAYSY41xvq1SrOkDUuT5AQNHY>
Subject: Re: [CCAMP] Last Call: <draft-ietf-ccamp-layer0-types-06.txt> (A YANG Data Model for Layer 0 Types) to Proposed Standard
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From: CCAMP <ccamp-bounces@ietf.org> on behalf of Zhenghaomian <zhenghaomian@huawei.com>
Sent: 22 September 2020 05:05
To: tom petch

Hi Tom,

<tp>

layer0-types is ok, wson-yang not so, as I have posted separately.

In passing, I do not understand 
the term 'channel-spacing' can be alternated
alternate is one of those delightful words that have different meanings in English and American but I cannot make either fit here.  And
maximum-slot-width should be /bigger/greater/ than

Tom Petch

Thank you for the valuable comments, again. We have updated the draft to address them, please find the draft-ietf-ccamp-layer0-types-07 and draft-ietf-ccamp-wson-yang-26.

BTW, there will be a ccamp interim session on Sept 23rd, and you are more than welcome to join:)

Best wishes,
Haomian

-----邮件原件-----
发件人: tom petch [mailto:daedulus@btconnect.com]
发送时间: 2020年9月19日 0:14
收件人: The IESG <iesg-secretary@ietf.org>
抄送: ccamp@ietf.org; ccamp-chairs@ietf.org; Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>om>; db3546@att.com; draft-ietf-ccamp-layer0-types@ietf.org
主题: Re: Last Call: <draft-ietf-ccamp-layer0-types-06.txt> (A YANG Data Model for Layer 0 Types) to Proposed Standard

The YANG module references RFC4203, RFC7699 and G.694.2 but the I-D does not so these need adding. I note that the other references from the YANG are all Informative which seems to me debatable.

grouping wson-label-start-end is introduced as 'A YANG grouping that defines the label-start and label-end'
which leads me to expect two leaf but there is only one; the YANG description is "The WSON label-start or label-end ...
which seems more accurate but since the grouping is a choice of cwdm or dwdm could it find uses which are neither start nor end in which case a different name would be even more appropriate?

grouping flexi-grid-label-start-end is introduced as 'A YANG grouping that defines the label-start and label-end '
and again there is only one leaf; the YANG description is "Label-start and Label-end information for Flexi-grid."
which seems equally inappropriate.  I cannot see any uses of this grouping - I note that draft-ietf-ccamp-flexigrid-yang has not been updated to match this I-D - and since it is but one leaf, not even a choice, I wonder why it warrants a grouping with the increased difficulty of comprehension that groupings introduce.

leaf min-slot-width-factor {type uint16 {range "1..max";}
            default 1;
leaf max-slot-width-factor {type uint16 {range "1..max"; but with no default. Worth a YANG conditional perhaps for max>min or
max>=min as appropriate.  Can they be equal?  the equal ranges imply so
but has it any particular meaning?

I wonder how often l0 will be construed as ten or ell-oh with an attendant error!

Tom Petch


----- Original Message -----
From: "The IESG" <iesg-secretary@ietf.org>
To: "IETF-Announce" <ietf-announce@ietf.org>
Cc: <ccamp@ietf.org>rg>; <ccamp-chairs@ietf.org>rg>; "Daniele Ceccarelli"
<daniele.ceccarelli@ericsson.com>om>; <db3546@att.com>om>; <draft-ietf-ccamp-layer0-types@ietf.org>
Sent: Wednesday, September 16, 2020 9:44 PM
Subject: Last Call: <draft-ietf-ccamp-layer0-types-06.txt> (A YANG Data Model for Layer 0 Types) to Proposed Standard


> The IESG has received a request from the Common Control and
Measurement Plane
> WG (ccamp) to consider the following document: - 'A YANG Data Model
for Layer
> 0 Types'
>   <draft-ietf-ccamp-layer0-types-06.txt> as Proposed Standard
>
> The IESG plans to make a decision in the next few weeks, and solicits
final
> comments on this action. Please send substantive comments to the
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comments may
> be sent to iesg@ietf.org instead. In either case, please retain the
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