Minutes IETF112: ccamp
minutes-112-ccamp-00

Thursday, November 11, 2021
16:00-18:00 Thursday Session III, Room 5

Presentation Start Time Duration Information
0 16:00 10 Title: Administrivia - WG Status - Reporting on WG drafts not being
presented Presenter: Chairs

No agenda changes.

1 16:10 10 Title: A YANG Data Model for Optical Impairment-aware Topology
Draft:
https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-optical-impairment-topology-yang
Presenter: Sergio Belotti

Chair suggest thats the authors send the I-D for an early YANG DR review once
the open issues mentioned are fixed. No further questions.

2 16:20 10 Title: A YANG Data Model for Layer 0 Types - Revision 2
Draft: https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-layer0-types-ext
Presenter: Sergio Belotti

[Haomian Zheng (from chat)] what is the target of layer0-types, besides
supporting optical impairment topology?

[Italo Busi (from chat)] dwdm-if, wson tunnel and flexi-grid tunnel models
depend on layer0-types-ext.

[Fatai Zhang]: is v2 going to obsolete v1? or update? RFC 2223 gives
description on the definition of obsolete and update.

[Sergio Belotti]: the intention is to have -v2 RFC includes everything, as
depicted in the slide backup of my presentation.

[Fatai Zhang] Obsolete means to replace which can be used alone. Update should
reference to the old one.

[Dieter Beller] Current v2 draft is adding features to the model RFC9093. So
when the extension is published, it should replace/obsolete the v1.

[Fatai Zhang] That¡¯s also my understanding, we should double check and change
the ¡®category¡¯.

[Adrian Farrel (from chat)] please ask Adrian. or check with AD.

[Aihua Guo] the future extension would support more models like wson tunnel and
optical path computation.

[Italo Busi] we can rename to RFC9093bis if we want to clarify.

[Dieter Beller (from chat)] This is my view: whatever all layer0-related YANG
models need in terms of layer0-types extensions are fitting to the scope of the
lyer0-types-ext draft. So, everything can go in up to the point in time we want
to publish -v2.

[Italo Busi (from chat)] I agree with Dieter¡­

[Haomian Zheng (from chat)] suggest to have a ¡®cutting point¡¯ for -v2, it
will be a mess if we put too much dependent models on the same types file as a
cluster. Anyway we can start -v3 right after publication ¡­

[Italo Busi (from chat)] @haomian, if we need to publish an RFC sooner than
other, we can still split between v2 and v3 in the same way we have split
between v1 and v2.

[Haomian Zheng (from chat)] No problem and we can decide later.

3 16:30 10 Title: A YANG Data Model for Flexi-Grid Topology and Media Channels
Draft:
https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-flexigrid-media-channel-yang
Draft: https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-flexigrid-yang
Presenter: Daniel King

[Fatai Zhang]: the flexi-grid topology model it is quite stable to be proceed.
[Daniel King]: Yes please.
[Haomian Zheng]: The operational considerations for Flexi-Grid are important
but instead of focusing on specific technology, can we work on somerthing that
applies to other technologies? would prefer to make it generic. [Daniel King]
Ah, good point. If we can generalize the work and apply it to multiple CCAMP
technologies, that would be better than focusing only on flexi-grid.

4 16:40 10 Title: A YANG Data Model for Microwave Topology
Draft: https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-mw-topo-yang
Presenter: Scott Mansfield

No comments.

5 16:50 10 Title: Framework and Data Model for OTN Network Slicing
Draft:
https://datatracker.ietf.org/doc/html/draft-zheng-ccamp-yang-otn-slicing-03.txt
Presenter: Aihua Guo

[Haomian Zheng]: the issue with schema mount is more generic than specific to
the OTN sliciing and discuss schema mount issues with YANG experts.

[Scott Mansfield (from the chat)]: schema mount needs a larger discussion, I
agree.

[Aihua Guo]: I agree, this is a tool to fix the design of the model.

Chairs Poll for adopting I-D

[Chairs]: Good support for adopting the document, we will take to the list.

6 17:00 15 Title: YANG Data Models for requesting Path Computation in Optical
Networks Draft:
https://datatracker.ietf.org/doc/html/draft-gbb-ccamp-optical-path-computation-yang-00.txt
Presenter: Italo Busi

[Dieter Beller] I think it makes sense to cover WSON and flexi-grid in a single
draft because of layer 0. The OTN can be done in a separate L1 draft.

[Italo Busi] Do you mean one draft with two YANG modules?

[Dieter Beller] One draft with two modules is a possibility.

(Aihua is sharing the same comment with Dieter).

[Daniel King (from chat)] No question, just wanted to say this is function that
already existed in previous WG document(s), so it would be good for the WG to
adopt sooner, rather than later.

[Fatai Zhang] If there is no fundamental differences, I would prefer one draft
with all the three models.

[Italo Busi] No strong opinion on my side, we just need to decide how many
documents to request for WG adoption.

[Fatai Zhang] Let¡¯s do another draft update and then we can decide the WG
adoption.

7 17:15 15 Title: A YANG Data Model for Optical Network Inventory
Draft:
https://datatracker.ietf.org/doc/html/draft-yg3bp-ccamp-optical-inventory-yang-00.txt
Presenter: Chaode Yu

[Italo Busi] Are we ok to generalize this work and progress it within CCAMP WG?

[Chaode Yu] We prefer to progress it in CCAMP WG.

[John Scudder (from chat)]: basically the most important thing regarding home
WG from my PoV: (1) the work should happen where there is energy to do it, and
(2) other WGs to which the work is relevant should be kept in the loop. As I
said we can iterate with the chairs of the other WGs.

[John Scudder (AD)]: for the time being progressing the draft in this WG seems
the right thing to do. To discuss also with other WG chairs before next IETF.

[Aihua Guo] I agree to keep the work in CCAMP WG but the draft name needs to be
changed to reflect the broader scope (e.g., network inventory).

[Daniel King (from chat)]: I have a question regarding the relationship with
other network inventory models - do they exist(?), and also service attachment
point model. I will post to list.

[Adrian Farrel (from chat)] I think the question (Dan may already be typing
this on the list) was not whether ¡°optical inventory¡± belonged somewhere
else, but whether there are other places where ¡°inventory¡± models are being
built that should share an approach or even some common model.

8 17:30 15 Title: Accessing Cloud via Optical Network Problem Statement
Draft:
https://www.ietf.org/archive/id/draft-liu-rtgwg-optical2cloud-problem-statement-00.html
Presenter: Sheng Liu

Comments from chat - [John Scudder] People may also want to look at the rtgwg
minutes. The raw hedgedoc notes are at
https://notes.ietf.org/notes-ietf-112-rtgwg# [Haomian Zheng (to report rtgwg) ]
we were seeking common objectives between this work and rtgwg documents, but
did not find any according to feedback. So both requirement and solutions are
belonging to ccamp now. Next step would be gap analysis. [Deborah Brungard(from
chat)] I can do my comments via chat. Overall need to separate data plane from
control plane. For data plane is SG15 responsibility. [Dieter Beller(from
chat)] - Re draft-liu-rtgwg-optical2cloud-problem-statement-00: CCAMP is
focusing on control plane aspects of the OTN - most of the requirements
presented are data plane related. So, it is not clear to me to what extent the
control plane can help meeting these requirements. [Haomian Zheng(from chat)]
Thank you Deborah, we will follow with SG15 progress.

9 17:45 15 Title: A YANG Data Model for WDM management in Front-Haul NBI
Draft:
https://datatracker.ietf.org/doc/html/draft-zhaosun-ccamp-front-haul-wdm-yang-01.txt
Presenter: Yang Zhao

No time for comment, the authors are open to any questions or comments on the
list. [Meeting ended]