Re: [CCAMP] [mpls] Fwd: Fwd: I-D Action: draft-helvoort-ccamp-fs-priority-00.txt

Hi,

While I understand (and to a certain extent support) the purpose of this
document, I am not sure that the note that you are proposing in Section 2
of the document really clarifies the definitions of what are the priorities.

Based on the Rosetta Stone document - a "Communication Channel" is any
logical connection between NEs that may be used for management or control
plane applications. In theory this includes (to my understanding) any use
of the GACH as defined for MPLS-TP (e.g. any OAM functionality).

Your note states: "For 1+1 protection schemes (which do not use a
communication channel)" -

   - what are these? Is there a protection scheme for MPLS-TP that do not
   use a communication channel - for example for CC or CV messages? If you
   meant to say that they are not dependent upon a coordination protocol
   (similar to the statement in the ITU documentation that refers to APS) then
   I suggest that you clearly state this.
   - However, are you adding a blanket statement that 1+1 protection
   schemes do not use a coordination protocol? This is news to me, since to
   the best of my recollection both ITU Ethernet Linear Protection and RFC6378
   define support for 1+1 protection, don't they?

Might I suggest that you adhere more closely to the language of the ITU
definition and state that if a coordination protocol is being used then
SF-P priority is higher than FS.

Hope this helps,
yaacov weingarten

On Mon, Jul 29, 2013 at 11:26 AM, Huub van Helvoort <huubatwork@gmail.com>wrote:

> Hello MPLS,
>
> I noticed that I did not send this notification to the MPLS
> list at the same time as I sent it to CCAMP.
>
> This concerns/addresses priorities in linear protection.
>
> Best regards, Huub.
>
> -------- Original Message --------
> Subject: Fwd: I-D Action: draft-helvoort-ccamp-fs-**priority-00.txt
> Date: Fri, 12 Jul 2013 10:22:06 +0200
> From: Huub van Helvoort <huubatwork@gmail.com>
> Reply-To: huubatwork@gmail.com
> To: CCAMP <ccamp@ietf.org>
>
> Hello CCAMP,
>
> Based on the messages on the MPLS list:
> http://www.ietf.org/mail-**archive/web/mpls/current/**msg09913.html<http://www.ietf.org/mail-archive/web/mpls/current/msg09913.html>
> http://www.ietf.org/mail-**archive/web/mpls/current/**msg09916.html<http://www.ietf.org/mail-archive/web/mpls/current/msg09916.html>
>
> I have created and uploaded the draft below.
> Comments are appreciated.
>
> Best regards, Huub.
>
> -------- Original Message --------
> Subject: I-D Action: draft-helvoort-ccamp-fs-**priority-00.txt
> Date: Fri, 12 Jul 2013 01:01:39 -0700
> From: internet-drafts@ietf.org
> Reply-To: internet-drafts@ietf.org
> To: i-d-announce@ietf.org
>
>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>
>
>         Title           : Update Forced Switch Priority
>         Author(s)       : Huub van Helvoort
>         Filename        : draft-helvoort-ccamp-fs-**priority-00.txt
>         Pages           : 4
>         Date            : 2013-07-12
>
> Abstract:
>    This document clarifies the definitions related to Manual Switch and
>    Forced Switch. This document updates RFC 4427.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/**doc/draft-helvoort-ccamp-fs-**priority<https://datatracker.ietf.org/doc/draft-helvoort-ccamp-fs-priority>
>
> There's also a htmlized version available at:
> http://tools.ietf.org/html/**draft-helvoort-ccamp-fs-**priority-00<http://tools.ietf.org/html/draft-helvoort-ccamp-fs-priority-00>
>
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-**drafts/<ftp://ftp.ietf.org/internet-drafts/>
>
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-- 
Thanx and BR,
yaacov

*Still looking for new opportunity*