[CCAMP] 答复: I-D Action: draft-lee-ccamp-wson-impairment-yang-00.txt

Fatai Zhang <zhangfatai@huawei.com> Wed, 24 October 2018 02:56 UTC

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From: Fatai Zhang <zhangfatai@huawei.com>
To: "Gabriele Maria Galimberti (ggalimbe)" <ggalimbe@cisco.com>, Leeyoung <leeyoung@huawei.com>, Dieter Beller <Dieter.Beller@nokia.com>, =?utf-8?B?Sm9uYXMgTcOlcnRlbnNzb24=?= <jonas.martensson@ri.se>, "Zhenghaomian (Zhenghaomian, Optical &Microwave Technology Research Dept)" <zhenghaomian@huawei.com>
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Thread-Topic: [CCAMP] I-D Action: draft-lee-ccamp-wson-impairment-yang-00.txt
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Date: Wed, 24 Oct 2018 02:56:35 +0000
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Hi Gabriele and all,

Good point.
I agree with Gabriele and prefer the integers.



发件人: CCAMP [mailto:ccamp-bounces@ietf.org] 代表 Gabriele Maria Galimberti (ggalimbe)
发送时间: 2018年10月20日 0:52
收件人: Leeyoung <leeyoung@huawei.com>om>; Dieter Beller <Dieter.Beller@nokia.com>om>; Jonas Mårtensson <jonas.martensson@ri.se>se>; Zhenghaomian (Zhenghaomian, Optical &Microwave Technology Research Dept) <zhenghaomian@huawei.com>
抄送: ccamp@ietf.org
主题: Re: [CCAMP] I-D Action: draft-lee-ccamp-wson-impairment-yang-00.txt

Hi Young,

Looking at the schema in your github I saw the description:


       +--rw (grid-type)?

       |  +--:(flexi-grid)

       |  |  +--ro central-channel-freq?   decimal64

       |  |  +--ro slot-width?             decimal64

       |  +--:(dwdm)

       |  |  +--ro channel-freq?           decimal64

       |  +--:(cwdm)

       |     +--ro channel-wavelength?     uint32

Wouldn’t be better to describe the above parameters according to RFC7699 (e.g. Grid, C.S., N and M )?
This would eliminate any ugly decimal in favor of int.

Best Regards,


Gabriele Galimberti
Principal Engineer
Cisco Photonics Srl

via S.Maria Molgora, 48 C
20871 - Vimercate (MB)

Phone :+39 039 2091462
Mobile :+39 335 7481947
Fax :+39 039 2092049

From: CCAMP <ccamp-bounces@ietf.org<mailto:ccamp-bounces@ietf.org>> on behalf of Leeyoung <leeyoung@huawei.com<mailto:leeyoung@huawei.com>>
Date: Monday, 15 October 2018 at 19:02
To: Dieter Beller <Dieter.Beller@nokia.com<mailto:Dieter.Beller@nokia.com>>, Jonas Mårtensson <jonas.martensson@ri.se<mailto:jonas.martensson@ri.se>>, "Zhenghaomian (Zhenghaomian, Optical &Microwave Technology Research Dept)" <zhenghaomian@huawei.com<mailto:zhenghaomian@huawei.com>>
Cc: "ccamp@ietf.org<mailto:ccamp@ietf.org>" <ccamp@ietf.org<mailto:ccamp@ietf.org>>
Subject: Re: [CCAMP] I-D Action: draft-lee-ccamp-wson-impairment-yang-00.txt

Hi Dieter,

What I meant a new scope of this draft is to combine flexi-grid with WSON (fixed-grid) as we discussed in the last week’s meeting. In regards to your point on separating the topology and the tunnel model, I agree. We haven’t got to the tunnel model yet. Please check the latest model in the github: https://github.com/younglee-ietf/actn-wson-flexi-grid

Please find the latest model per our meeting:

and its tree:


From: Dieter Beller [mailto:Dieter.Beller@nokia.com]
Sent: Monday, October 15, 2018 10:46 AM
To: Leeyoung <leeyoung@huawei.com<mailto:leeyoung@huawei.com>>; Jonas Mårtensson <jonas.martensson@ri.se<mailto:jonas.martensson@ri.se>>; Zhenghaomian (Zhenghaomian, Optical &Microwave Technology Research Dept) <zhenghaomian@huawei.com<mailto:zhenghaomian@huawei.com>>
Cc: ccamp@ietf.org<mailto:ccamp@ietf.org>
Subject: Re: [CCAMP] I-D Action: draft-lee-ccamp-wson-impairment-yang-00.txt

Hi Young, all,

it would be great if you could share the new scope on the list before you submit the new version. This will allow folks to send comments to the list.

One of my comments was that the current 00-draft is defining augmentations, which are TE-topology related, and other augmentations that are tunnel-related
not aligned with the current scope.

I would clearly prefer separate drafts for these 2 different categories.


On 12.10.2018 16:14, Leeyoung wrote:
Hi Jonas,

Thanks for your comment. We are updating the draft including the change of the names and the scope. As Haomiana and Gabriele shared their view, we are trying to harmonize with other impairment-related work for GMPLS/WSON.


From: Jonas Mårtensson [mailto:jonas.martensson@ri.se]
Sent: Friday, October 12, 2018 2:34 AM
To: Leeyoung <leeyoung@huawei.com><mailto:leeyoung@huawei.com>; Zhenghaomian (Zhenghaomian, Optical &Microwave Technology Research Dept) <zhenghaomian@huawei.com><mailto:zhenghaomian@huawei.com>
Cc: ccamp@ietf.org<mailto:ccamp@ietf.org>
Subject: RE: [CCAMP] I-D Action: draft-lee-ccamp-wson-impairment-yang-00.txt

Hi Young and Haomian,

Interesting draft. What is the relation to other WSON impairment drafts (wson-iv-info and wson-iv-encode)? Are you proposing a completely different approach here since you do not refer to those drafts?


On 01.09.2018 05:42, internet-drafts@ietf.org<mailto:internet-drafts@ietf.org> wrote:

A New Internet-Draft is available from the on-line Internet-Drafts directories.

        Title           : A Yang Data Model for Impairment-Aware WSON Optical Networks

        Authors         : Young Lee

                          Haomian Zheng

  Filename        : draft-lee-ccamp-wson-impairment-yang-00.txt

  Pages           : 18

  Date            : 2018-08-31


   This document provides a YANG data model for the impairment-aware TE

   topology in wavelength switched optical networks (WSONs).

The IETF datatracker status page for this draft is:


There are also htmlized versions available at:



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