Re: [CCAMP] Summary of the CCAMP meeting on Optical Impairment Topology YANG model

[Dieter Beller <[e-mail]>]

Hi Daniele,

I was aware that the WG LC has been concluded already for layer0-types. 
I posted my comments on GitHub because we discussed the dependencies of 
various
YANG modules on layer0-types during our weekly optical impairment 
topology call last week. Based on that discussion, I had the impression 
that the authors of
layer0-types already agreed to remove everything that is not related to 
spectrum management including the transponder model.

I would assume that there will be another WG LC for layer0-types when 
these modifications will have been done to give the WG an opportunity to 
review it before
the publication process will start.


Thanks,
Dieter


On 30.03.2020 14:29, Daniele Ceccarelli wrote:
>
> Hi Dieter,
>
> The L0 types has already concluded the last call, the draft in last 
> call is the WSON topology…but in any case it’s always good to have 
> further comments.
>
> Looking at the comments it seems they are all applicable also to the 
> proposal to remove transponder properties from the L0 types draft, right?
>
> BR
>
> Daniele
>
> *From:*Dieter Beller <[e-mail]>
> *Sent:* den 28 mars 2020 22:26
> *To:* Belotti, Sergio (Nokia - IT/Vimercate) 
> <[e-mail]>; [e-mail]; 
> [e-mail]; Italo Busi <[e-mail]>; Griseri, 
> Enrico (Nokia - IT/Vimercate) <[e-mail]>; Kelly, Colin 
> (Nokia - CA/Ottawa) <[e-mail]>; Gabriele Maria Galimberti 
> (ggalimbe) <[e-mail]>; ([e-mail]) 
> <[e-mail]>; Aihua Guo <[e-mail]>; 
> Zhenghaomian <[e-mail]>
> *Cc:* Daniele Ceccarelli <[e-mail]>; Fatai 
> <[e-mail]>; CCAMP <[e-mail]>
> *Subject:* Re: Summary of the CCAMP meeting on Optical Impairment 
> Topology YANG model
>
> Hi all,
>
> I completed my review of ietf-layer0-types.yang. Please find my 
> comments here: 
> https://github.com/ietf-ccamp-wg/draft-ietf-ccamp-layer0-types/issues/9 
> <https://protect2.fireeye.com/v1/url?k=44194f13-1890e0da-44190f88-0cc47ad93e1c-9a756a5f63c40108&q=1&e=5547670a-4e75-42ee-aad0-9ab56d8dea6d&u=https%3A%2F%2Fgithub.com%2Fietf-ccamp-wg%2Fdraft-ietf-ccamp-layer0-types%2Fissues%2F9>.
>
> Thanks,
> Dieter
>
> On 20.03.2020 19:06, Belotti, Sergio (Nokia - IT/Vimercate) wrote:
>
>     During the meeting the major topic been discussed was related to
>     the e-mail exchange regarding [CCAMP] WG last call on
>     draft-ietf-ccamp-wson-yang-23 and in particular the issue raise by
>     Dieter with the mail sent March 10 on , regarding the alignment
>     among the different L0 YANG models with respect ietf-layer0-types.
>
>     These are the list of drafts we need to consider
>
>      1. ietf-ccamp-wson-yang;
>      2. ietf-ccamp-flexigrid-yang;
>      3. ietf-ccamp-wson-tunnel;
>      4. ietf-ccamp-flexigrid-media-channel-yang;
>      5. ietf-dwdm-if-param-yang;
>      6. ietf-ccamp-optical-impairment-topology-yang
>
>     There are practically two options on the table:
>
>      1. Go ahead to publish ietf-layer0-types as reference “types”
>         module for the set of drafts addressing “only” specific use
>         cases that basically is  “spectrum allocation” (a,b,c d
>         drafts) , creating in parallel a new ietf-layer0-types-xxx
>         that can be used for ietf-dwdm-if-param-yang and
>         ietf-ccamp-optical-impairment-topology-yang.
>
>     In this solution there is the problem to understand if the use
>     case claimed to be supported is possible without e.g. transpoder
>     information like the ones contained in the e, f drafts.
>
>      2. Use “versioning” YANG paradigm, this solution permits to move
>         ahead in parallel two version of the same files “types”, and
>         v2 will incorporate all the needed update for e and f drafts.
>
>     Before to take any choice, attendees of the call  decided that a
>     careful review of the ietf-layer0-types is needed to understand
>     possible gaps with respect all optical impairments and
>     transponders description .
>
>     Moreover a new issue will be open in the ietf-layer0-types github
>     to report optical impairments related comments/concerns.
>
>     Attached the e-mail exchange I mentioned at the beginning.
>
>     Feel free to amend and add what is missing.
>
>     Thanks
>
>     Sergio
>
>     Sergio Belotti
>
>     Senior System Engineer and Standardization Architect
>
>     IP/Optical Networks, Optics BU
>
>     Nokia
>
>     M: [phone]
>
>     Via Energy Park, 20871 Vimercate (MB) , Italy
>
>     [e-mail] <mailto:[e-mail]>
>