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

[Daniele Ceccarelli <[e-mail]>]

Hi Dieter,

 

We need another WG last call if there are major changes in the draft that
require it. 

Most of the changes are already widely agreed among the working group. I
would say that your comments and others still pending can be treated as WG
last call comments.

Cheers,

 

Daniele  

 

From: Dieter Beller <[e-mail]> 
Sent: den 2 april 2020 17:50
To: Daniele Ceccarelli <[e-mail]>
Cc: 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]>; Fatai
<[e-mail]>; CCAMP <[e-mail]>
Subject: Re: Summary of the CCAMP meeting on Optical Impairment Topology
YANG model

 

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  <mailto:[e-mail]>
<[e-mail]> 
Sent: den 28 mars 2020 22:26
To: Belotti, Sergio (Nokia - IT/Vimercate)
<mailto:[e-mail]> <[e-mail]>;
[e-mail] <mailto:[e-mail]> ;
[e-mail] <mailto:[e-mail]> ; Italo Busi
<mailto:[e-mail]> <[e-mail]>; Griseri, Enrico
(Nokia - IT/Vimercate)  <mailto:[e-mail]>
<[e-mail]>; Kelly, Colin (Nokia - CA/Ottawa)
<mailto:[e-mail]> <[e-mail]>; Gabriele Maria
Galimberti (ggalimbe)  <mailto:[e-mail]> <[e-mail]>;
([e-mail] <mailto:[e-mail]> )
<mailto:[e-mail]> <[e-mail]>; Aihua Guo
<mailto:[e-mail]> <[e-mail]>; Zhenghaomian
<mailto:[e-mail]> <[e-mail]>
Cc: Daniele Ceccarelli  <mailto:[e-mail]>
<[e-mail]>; Fatai  <mailto:[e-mail]>
<[e-mail]>; CCAMP  <mailto:[e-mail]> <[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-44190f88-0cc47ad93e
1c-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

a.	ietf-ccamp-wson-yang;
b.	ietf-ccamp-flexigrid-yang;
c.	ietf-ccamp-wson-tunnel; 
d.	ietf-ccamp-flexigrid-media-channel-yang;
e.	ietf-dwdm-if-param-yang;
f.	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]>