Re: Last Call: <draft-sprecher-mpls-tp-oam-considerations-01.txt> (The Reasons for Selecting a Single Solution for MPLS-TP OAM) to Informational RFC - comment 2

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Loa,

I still do not understand how you can claim that the words from slide 113 of RFC 5317 and quoted in section 1.1 of draft-sprecher-mpls-tp-oam-considerations-01:

"It is technically feasible that the existing MPLS architecture can be
extended to meet the requirements of a Transport profile
The architecture allows for a single OAM technology for LSPs, PWE
and a deeply nested network"

Represent a decision or even a recommendation.

However, if as you insist it was a "decision" can you explain why the IETF chose to ignore this "decision" and initially defined different encapsulations for the PW and LSP OAM and subsequently defined a second encapsulation for PW OAM.  So that now we have two encapsulations for OAM in MPLS-TP PWs.

Regards,

Malcolm




Loa Andersson <loa@xxxxx>

14/10/2011 10:37 AM

To
Malcolm.BETTS@xxxxxxxxxx
cc
Ietf@xxxxxxxx
Subject
Re: Last Call: <draft-sprecher-mpls-tp-oam-considerations-01.txt> (The Reasons for Selecting a Single Solution for MPLS-TP OAM) to Informational RFC - comment 2





Malocolm,

there is no conflict - the one OAM solution was and is a decision.

/Loa

On 2011-10-14 15:59, Malcolm.BETTS@xxxxxxxxxx wrote:
> Loa,
>
> I have added - comment 2 to the subject line and deleted all the other
> comments.
>
> I cannot find section 1.1 or the text "one OAM solution" in the PDF
> version of RFC 5317.
>
> The last paragraph of section 1 states:
>
> In the case of a conflict between the summary and the
> slides, the slides take precedence. Since those slides were the
> basis of an important agreement between the IETF and the ITU-T, it
> should further be noted that in the event that the PDF version of the
> slides differs from those emailed to ITU-T and IETF management on 18
> April 2008 by the co-chairs of the JWT, the emailed slides take
> precedence.
>
> The full quote from slide 12 is:
>  > This presentation is a collection of assumptions, discussion points and
>  > decisions that the combined group has had during the months of March and
>  > April, 2008
>  > This represents the **agreed upon starting point** for the technical
>  > analysis of the T-MPLS requirements from the ITU-T and the MPLS
>  > architecture to meet those requirements
>
> I must also remind you that the JWT did not have the power to make
> decision for the ITU or IETF as stated in TD515/PLEN that established
> the ad group on MPLS-TP and the JWT:
>
> "The Joint Working Team is the union of the ad hoc and design teams. It
> has no official affiliation or status with either the ITU-T or the IETF
> but will provide a forum for open communication and cooperative work"
>
> This is aligned with normal process in the IETF where a design team
> cannot make decisions for a Working Group.
>
> Therefore, my proposed clarification of the context of the "one
> solution" statement should be included in
> draft-sprecher-mpls-tp-oam-considerations.
>
>
> Regards,
>
> Malcolm
>
>
>
> *Loa Andersson <loa@xxxxx>*
>
> 14/10/2011 02:15 AM
>
>                  
> To
>                  Malcolm.BETTS@xxxxxxxxxx
> cc
>                  Ietf@xxxxxxxx
> Subject
>                  Re: Last Call: <draft-sprecher-mpls-tp-oam-considerations-01.txt> (The
> Reasons for Selecting a Single Solution for MPLS-TP OAM) to
> Informational RFC
>
>
>                  
>
>
>
>
>
> All,
>
> juat one small comment on how "slide 12" of the JWT report is (mis)used
> in this debate.
>
> The text says:
>
> " This presentation is a collection of assumptions, discussion points
> and decisions that the combined group has had during the months of
> March and April, 2008."
>
> The paragraph is correct and it says that the presentation includes
> - assumptions
> - discussion points
> - decisions
>
> The statement on "one OAM solution" from section 1.1 of RFC5317 clearly
> falls into the *decision* category. As such it rather support
> publishing the draft rather than indicating that we shouldn't.
>
> /Loa
>
> On 2011-10-14 04:31, Malcolm.BETTS@xxxxxxxxxx wrote:
>  > Below are my comments on this draft, these are in addition to the
>  > comments that I have provided previously. I also support the comments
>  > that propose the deletion of sections 4, 5 and 6.
>  >
>  > I have numbered my comments (1-12) to simplify identification for those
>  > who wish to respond.
>  >
>  > I do not support approval of this draft in its current form.
>  >
>  > Regards,
>  >
>  > Malcolm
>  >
>
>  >
>  > 2) Quote from RFC5317
>  >
>  > Section 1.1 includes the following:
>  > [RFC5317] includes the analysis that "it is technically feasible that
>  > the existing MPLS architecture can be extended to meet the
>  > requirements of a Transport profile, and that the architecture allows
>  > for a single OAM technology for LSPs, PWs, and a deeply nested
>  > network."
>  >
>  > The context of this quote from slide 113 should be clarified; slide 12
>  > states of RFC 5317 states:
>  >
>  > This presentation is a collection of assumptions, discussion points and
>  > decisions that the combined group has had during the months of March and
>  > April, 2008
>  > This represents the *agreed upon starting point* for the technical
>  > analysis of the T-MPLS requirements from the ITU-T and the MPLS
>  > architecture to meet those requirements
>  >
>  > Proposal: Insert the following text before the quoted text:
>  >
>  > [RFC 5317] provides a collection of assumptions, discussion points and
>  > decisions that the JWT has had during the months of March and April,
>  > 2008. This represents the agreed upon starting point for the technical
>  > analysis of the T-MPLS requirements from the ITU-T and the MPLS
>  > architecture to meet those requirements. Included in this analysis is
>  > the statement that "it is technically feasible that the existing MPLS
>  > architecture can be extended to meet the requirements of a Transport
>  > profile, and that the architecture allows for a single OAM technology
>  > for LSPs, PWs, and a deeply nested network."
>  >
>
>  >
>  > _______________________________________________
>  > Ietf mailing list
>  > Ietf@xxxxxxxx
>  >
https://www.ietf.org/mailman/listinfo/ietf
>
> --
>
>
> Loa Andersson email: loa.andersson@xxxxxxxxxxxx
> Sr Strategy and Standards Manager loa@xxxxx
> Ericsson Inc phone: +46 10 717 52 13
> +46 767 72 92 13
>
>

--


Loa Andersson                         email: loa.andersson@xxxxxxxxxxxx
Sr Strategy and Standards Manager            loa@xxxxx
Ericsson Inc                          phone: +46 10 717 52 13
                                             +46 767 72 92 13


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