Re: [CCAMP] 答复: Fwd: New Version Notification for draft-vergara-ccamp-flexigrid-yang-04.txt

   Hi,

   Thank you for your comments. We are considering them for next version of the draft.

   Best regards,

   -Jorge

> El 20 mar 2017, a las 2:37, Zhenghaomian <zhenghaomian@huawei.com> escribió:
> 
> Hi, Jorge, Dieter and All,
>  
> I shared the same comment with Dieter, ccamp draft should focus on control plane, and it would be appreciated if YANG draft is consistent with existing GMPLS extension drafts for flexi-grid (RFC 7698, 7699, etc.).
>  
> I would like to raise another comment, about the augmentation relationship. It is noted that a separate module has been defined for the so-called media channel, which is assumed to be flexi-grid tunnel if I understand correctly. By reading the YANG model, my intuitive idea is that this module can be obtained by augmenting to TE tunnel model, rather than a purely new one. It would be easier for the tunnel representation, and get better connection with the current YANG models in IETF.
>  
> Any ideas on this? Thank you very much.
>  
> Best wishes,
> Haomian
>  
> 发件人: CCAMP [mailto:ccamp-bounces@ietf.org] 代表 Dieter Beller
> 发送时间: 2017年3月7日 23:52
> 收件人: Jorge E. López de Vergara Méndez; ccamp@ietf.org
> 主题: Re: [CCAMP] Fwd: New Version Notification for draft-vergara-ccamp-flexigrid-yang-04.txt
>  
> Hi Jorge, all,
> 
> I read the 04-revision of the draft and I have some major concerns regarding the modeling of optical transponders: the draft
> defines models for the following two transponder types: flexi-grid-transponder and flexi-grid-sliceable-transponder.
> 
> By doing so, the draft tries to define a data plane standard, which is clearly outside the scope of CCAMP (we had this kind of
> discussion many times in the past). Please note that ITU-T Recommendation G.698.2 defines application codes and OpenConfig
> is following a similar approach as opposed to define an exhaustive list of transponder attributes (the attribute list in the draft is
> b.t.w. incomplete and does not guarantee interoperability). The OpenConfig terminal-device YANG model defines a single
> operational-mode attribute for the optical-channel as defined below: 
> 
>     leaf operational-mode {
>       type uint16;
>       description
>         "Vendor-specific mode identifier -- sets the operational
>         mode for the channel.  The specified operational mode must
>         exist in the list of supported operational modes supplied
>         by the device";
>     }
> 
> 
> 
>    +--rw optical-channel
>       +--rw config
>       |  +--rw frequency?             oc-opt-types:frequency-type
>       |  +--rw target-output-power?   decimal64
>       |  +--rw operational-mode?      uint16
>       |  +--rw line-port?             -> /oc-platform:components/component/name
> 
> 
> This is similar to the application code approach. Two transponders are considered  interoperable if they have at least one
> operational-mode in common. I strongly suggest that we follow a similar approach in CCAMP.
> 
> 
> Excerpts from draft-vergara-ccamp-flexigrid-yang-04.txt:
> flexi-grid-transponder
>    augment /nd:networks/nd:network/nd:node/tet:te/
>    tet:tunnel-termination-point:
>       +--rw transponder-type           flexi-grid-transponder-type
>       +--rw config
>       |  +--rw available-modulation*   modulation
>       |  +--rw modulation-type?        modulation
>       |  +--rw available-FEC*          FEC
>       |  +--rw FEC-enabled?            boolean
>       |  +--rw FEC-type?               FEC
>       +--ro state
>          +--ro available-modulation*   modulation
>          +--ro modulation-type?        modulation
>          +--ro available-FEC*          FEC
>          +--ro FEC-enabled?            boolean
>          +--ro FEC-type?               FEC
>  
> flexi-grid-sliceable-transponder
>    augment /nd:networks/nd:network/nd:node/tet:te/
>    tet:tunnel-termination-point:
>       +--rw transponder-type           flexi-grid-transponder-type
>       +--rw config
>       |  +--rw available-modulation*   modulation
>       |  +--rw modulation-type?        modulation
>       |  +--rw available-FEC*          FEC
>       |  +--rw FEC-enabled?            boolean
>       |  +--rw FEC-type?               FEC
>       |  +--rw transponder-list* [carrier-id]
>       |     +--rw carrier-id           uint32
>       +--ro state
>          +--ro available-modulation*   modulation
>          +--ro modulation-type?        modulation
>          +--ro available-FEC*          FEC
>          +--ro FEC-enabled?            boolean
>          +--ro FEC-type?               FEC
>          +--ro transponder-list* [carrier-id]
>             +--ro carrier-id           uint32
> 
> 
> Thanks,
> Dieter
> 
> 
> On 06.03.2017 16:18, Jorge E. López de Vergara Méndez wrote:
>     Dear all,
> 
>     Please find below a new draft of the Flexigrid YANG model. In this new version some changes have been made, according to previous received feedback:
> 
> Now both models are updated to YANG 1.1.
> State containers in the tree structure are now read-only.
> "Transponder" does not augment "node" anymore. Flexi-grid-node is the only structure playing this role in the model. Therefore, node-type was eliminated.
> "Transponder" augments "tunnel-termination-point". Since this structure does not have state or config subdivision, we have added config and state containers. Transponder-type is included to indicate whether it is a transponder or a sliceable transponder. 
> Few corrections to be coherent with TE topology model.
> Reference types are taken from TE topology model, so transponder-ref becomes tunnel-tp-id. Also node-ref is te-node-id.
> Minor corrections in some descriptions.
> Updated references and authors.
>     If you have any comment, please do not hesitate to send them to me.
> 
>     Best regards,
> 
>     -Jorge
> 
> 
> 
> -------- Mensaje reenviado --------
> Asunto:
> New Version Notification for draft-vergara-ccamp-flexigrid-yang-04.txt
> Fecha:
> Mon, 06 Mar 2017 01:03:50 -0800
> De:
> internet-drafts@ietf.org
> Para:
> Oscar de Dios <oscar.gonzalezdedios@telefonica.com>, Oscar Gonzalez de Dios <oscar.gonzalezdedios@telefonica.com>, Gabriele Galimberti <ggalimbe@cisco.com>, Jorge E. Lopez de Vergara <jorge.lopez_vergara@uam.es>, Universidad de Madrid <jorge.lopez_vergara@uam.es>, Daniel King <d.king@lancaster.ac.uk>, Daniel Perdices <daniel.perdices@estudiante.uam.es>, Young Lee <leeyoung@huawei.com>, Victor Lopezalvarez <victor.lopezalvarez@telefonica.com>, Victor Lopez <victor.lopezalvarez@telefonica.com>
>  
> 
> A new version of I-D, draft-vergara-ccamp-flexigrid-yang-04.txt
> has been successfully submitted by Jorge E. Lopez de Vergara and posted to the
> IETF repository.
>  
> Name:            draft-vergara-ccamp-flexigrid-yang
> Revision: 04
> Title:           YANG data model for Flexi-Grid Optical Networks
> Document date:   2017-03-06
> Group:           Individual Submission
> Pages:           32
> URL:            https://www.ietf.org/internet-drafts/draft-vergara-ccamp-flexigrid-yang-04.txt
> Status:         https://datatracker.ietf.org/doc/draft-vergara-ccamp-flexigrid-yang/
> Htmlized:       https://tools.ietf.org/html/draft-vergara-ccamp-flexigrid-yang-04
> Diff:           https://www.ietf.org/rfcdiff?url2=draft-vergara-ccamp-flexigrid-yang-04
>  
> Abstract:
>    This document defines a YANG model for managing flexi-grid optical
>    Networks. The model described in this document is composed of two
>    submodels: one to define a flexi-grid traffic engineering database,
>    and other one to describe the flexi-grid paths or media channels.
>    It is grounded on other defined YANG abstract models.
>  
>                                                                                   
>  
>  
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
>  
> The IETF Secretariat
>  
> 
> 
> 
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