Re: [Lime] I-D Action: draft-ietf-lime-yang-oam-model-09.txt

Dear Authors, WG Chairs, et. al,
please consider my comments to the latest version of the CO OAM YANG model:

   - "remote RDI" is repetitive as RDI stands for Remote Defect Indication.
   - I encourage to clearly separate Continuity Check from Connectivity
   Verification. As I read from the draft, it does not address proactive OAM
   but only on-demand OAM (I'll comment on my view how these are different
   below). Thus I'll point that on-demand OAM cannot serve as Continuity
   Verification OAM since Mis-connection Defect cannot be determined based on
   on-demand OAM.
   - I propose the following definitions for proactive and on-demand OAM:
      - proactive OAM method requires persistent configuration
      - on-demand OAM method requires only transient configuration
   - document refers to globally unique Source MEP ID but has no example,
   nor explanation how one is constructed.
   - Maintenance Domain contains two md-levels - one of its own and one in
   MIP.
   - not clear why model explicitly refers to mpls-ttl out of all MPLS(-TP)
   - continuity-check RPC does not use md-level
   - traceroute RPC does not use md-level

Regards,
Greg

On Mon, Mar 6, 2017 at 8:23 PM, wangzitao <wangzitao@huawei.com> wrote:

> Dear WG,
>
> According to the WGLC discussions, we update the Connection Oriented OAM
> YANG document.
> Thanks AdrIan Farrel, Greg Mirsky and others’ review and comments.
> In this version, we fix some nits, address the issues raised in email
> discussion,
> and add a MIP list in CO model. More details please see the draft.
>
> Best Regards!
> -Michael
>
> -----邮件原件-----
> 发件人: Lime [mailto:lime-bounces@ietf.org] 代表 internet-drafts@ietf.org
> 发送时间: 2017年3月7日 10:21
> 收件人: i-d-announce@ietf.org
> 抄送: lime@ietf.org
> 主题: [Lime] I-D Action: draft-ietf-lime-yang-oam-model-09.txt
>
>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> This draft is a work item of the Layer Independent OAM Management in the
> Multi-Layer Environment of the IETF.
>
>         Title           : Generic YANG Data Model for Connection Oriented
> Operations, Administration, and Maintenance(OAM) protocols
>         Authors         : Deepak Kumar
>                           Qin Wu
>                           Michael Wang
>         Filename        : draft-ietf-lime-yang-oam-model-09.txt
>         Pages           : 52
>         Date            : 2017-03-06
>
> Abstract:
>    This document presents a base YANG Data model for connection oriented
>    OAM protocols.  It provides a technology-independent abstraction of
>    key OAM constructs for such protocols.  The model presented here can
>    be extended to include technology specific details.  This guarantees
>    uniformity in the management of OAM protocols and provides support
>    for nested OAM workflows (i.e., performing OAM functions at different
>    levels through a unified interface)
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-lime-yang-oam-model/
>
> There's also a htmlized version available at:
> https://tools.ietf.org/html/draft-ietf-lime-yang-oam-model-09
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-lime-yang-oam-model-09
>
>
> 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.
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
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