
From iesg-secretary@ietf.org  Fri Oct  5 11:04:33 2012
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Subject: [Pce] Document Action: 'The Application of the Path Computation Element	Architecture to the Determination of a Sequence of Domains in	MPLS and GMPLS' to Informational RFC	(draft-ietf-pce-hierarchy-fwk-05.txt)
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The IESG has approved the following document:
- 'The Application of the Path Computation Element Architecture to the
   Determination of a Sequence of Domains in MPLS and GMPLS'
  (draft-ietf-pce-hierarchy-fwk-05.txt) as Informational RFC

This document is the product of the Path Computation Element Working
Group.

The IESG contact persons are Stewart Bryant and Adrian Farrel.

A URL of this Internet Draft is:
http://datatracker.ietf.org/doc/draft-ietf-pce-hierarchy-fwk/




Technical Summary

Computing optimum routes for Label Switched Paths (LSPs) across
multiple domains in MPLS Traffic Engineering (MPLS-TE) and GMPLS
networks presents a problem because no single point of path
computation is aware of all of the links and resources in each
domain. A solution may be achieved using the Path Computation
Element (PCE) architecture.

Where the sequence of domains is known a priori, various techniques
can be employed to derive an optimum path. If the domains are
simply-connected, or if the preferred points of interconnection are
also known, the Per-Domain Path Computation technique can be used.
Where there are multiple connections between domains and there is
no preference for the choice of points of interconnection, the
Backward Recursive Path Computation Procedure (BRPC) can be used to
derive an optimal path.

This document examines techniques to establish the optimum path when
the sequence of domains is not known in advance. The document
shows how the PCE architecture can be extended to allow the optimum
sequence of domains to be selected, and the optimum end-to-end path
to be derived through the use of a hierarchical relationship between
domains. 


Working Group Summary

There was nothing unusual to note in the progression of this document
through the working group.

Document Quality

This is a well written document. 

Personnel

Julien Meuric is the Document Shepherd.
Stewart Bryant is the Responsible Area Director.

 
RFC Editor Note

Section 3 Para 2,

s/TED/TED (Traffic Engineering Database)/

====

Section 3

OLD
   Note that in the case that the domains are IGP areas, there is no
   link between the domains (the ABRs have a presence in both
   neighboring areas). The parent domain may choose to represent this in
   its TED as a virtual link that is unconstrained and has zero cost,
   but this is entirely an implementation issue.
NEW
   Note that in the case that the domains are IGP areas, there is no
   link between the domains (the ABRs have a presence in both
   neighboring areas). The parent domain may choose to represent this in
   its traffic Engineering Database (TED) as a virtual link that is 
   unconstrained and has zero cost, but this is entirely an 
   implementation issue.
END

---

Section 4.1

OLD
   Deriving the optimal end-to-end domain path sequence is dependent on
   the policy applied during domain path computation. An Objective
   Function (OF) [RFC5541], or set of OFs, may be applied to define the
   policy being applied to the domain path computation.

   The OF specifies the desired outcome of the computation. It does
   not describe the algorithm to use. When computing end-to-end inter-
   domain paths, required OFs may include (see Section 1.3.1):

   o Minimum cost path
   o Minimum load path
   o Maximum residual bandwidth path
   o Minimize aggregate bandwidth consumption
   o Minimize or cap the number of transit domains
   o Disallow domain re-entry

   The objective function may be requested by the PCC, the ingress
   domain PCE (according to local policy), or applied by the parent PCE
   according to inter-domain policy.

   More than one OF (or a composite OF) may be chosen to apply to a
   single computation provided they are not contradictory. Composite OFs
   may include weightings and preferences for the fulfilment of pieces
   of the desired outcome.
NEW
   The definition of "optimal" in the context of deriving an optimal
   end-to-end path is dependent on the choices that are made during the
   path selection.  An Objective Function (OF) [RFC5541], or set of OFs,
   specify the intentions of the path computation and so define the
   "optimality" in the context of that computation.

   An OF specifies the desired outcome of a computation: it does not
   describe or demand the algorithm to use, and an implementation may 
   apply any algorithm or set of algorithms to achieve the result
   indicated by the OF.  OFs can be included in PCEP computation requests
   to satisfy the policies encoded or configured at the PCC, and a PCE 
   may be subject to policy in determining whether it meets the OFs 
   included in the computation request, or applies its own OFs.

   In inter-domain path computation, the selection of a domain sequence, 
   the computation of each (per-domain) path fragment, and the 
   determination of the end-to-end path may each be subject to different
   OFs and different policy.
   
   When computing end-to-end paths, OFs may include (see Section 1.3.1):

   o Minimum cost path
   o Minimum load path
   o Maximum residual bandwidth path
   o Minimize aggregate bandwidth consumption
   o Minimize or cap the number of transit domains
   o Disallow domain re-entry

   The objective function may be requested by the PCC, the ingress
   domain PCE (according to local policy), or applied by the parent PCE
   according to inter-domain policy.

   More than one OF (or a composite OF) may be chosen to apply to a
   single computation provided they are not contradictory. Composite OFs
   may include weightings and preferences for the fulfilment of pieces
   of the desired outcome.
END


From jvasseur@cisco.com  Sat Oct  6 02:36:55 2012
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From: "JP Vasseur (jvasseur)" <jvasseur@cisco.com>
To: "pce@ietf.org" <pce@ietf.org>
Thread-Topic: PCE WG Agenda IETF85
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Dear all,

The PCE WG will meet in Atlanta. Please let us not later than Oct 17 if you=
 would like to request a "presentation" slot ?

Thanks.

JP.=

From lberger@labn.net  Tue Oct  9 12:48:32 2012
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Cc: pce-chairs@tools.ietf.org
Subject: [Pce] Fwd: [CCAMP] WG Last Call: g709-framework, g709-info-model, ospf-g709v3, signaling-g709v3
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PCE WG,
	The enclosed LC has started in the CCAMP WG.  Please note that the 1st
document explicitly discusses PCE and the others are of likely interest
to the WG.  Comments should be sent to CCAMP (and cross posted to PCE if
really needed.)

Lou


-------- Original Message --------
Subject: [CCAMP] WG Last Call: g709-framework, g709-info-model,
ospf-g709v3, signaling-g709v3
Date: Mon, 08 Oct 2012 16:47:41 -0400
From: Lou Berger <lberger@labn.net>
To: CCAMP <ccamp@ietf.org>

This mail begins a two week working group last call on:

http://tools.ietf.org/html/draft-ietf-ccamp-gmpls-g709-framework-09
(Informational)

http://tools.ietf.org/html/draft-ietf-ccamp-otn-g709-info-model-04
(Informational)

http://tools.ietf.org/html/draft-ietf-ccamp-gmpls-ospf-g709v3-03
(Standards Track)

http://tools.ietf.org/html/draft-ietf-ccamp-gmpls-signaling-g709v3-04
(Standards Track)

This working group last call ends on October 22.  Comments should be
sent to the CCAMP mailing list.  Please remember to include the
technical basis for any comments.

Please note that we're still missing a few IPR statements, and look
for these to come in during the LC period.  Any forthcoming publication
request will be delayed by late IPR statements/disclosures.

Thank you,
Lou (and Deborah)
_______________________________________________
CCAMP mailing list
CCAMP@ietf.org
https://www.ietf.org/mailman/listinfo/ccamp







From dhruv.dhody@huawei.com  Thu Oct 11 11:19:09 2012
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From: Dhruv Dhody <dhruv.dhody@huawei.com>
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Subject: [Pce] FW: New Version Notification for	draft-dhody-pce-pcep-p2mp-per-destination-03.txt
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------=_NextPart_000_0060_01CDA80A.CCCEB2D0
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Dear All,

=20

We have uploaded a new revision to this ID.=20

=20

- removed the use of word "explicit-path" as it was contradicting its =
meaning with respect to RSVP

- explicitly specifying abstract nodes for inclusion or exclusion for a =
subset of P2MP destinations

- Clarify its use in Inter-domain core-tree based path computation

=20

As usual comments are most welcome....

=20

Regards,

Dhruv

=20

-----Original Message-----
From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]=20
Sent: Thursday, October 11, 2012 10:50 PM
To: dhruv.ietf@gmail.com
Cc: dhruv.dhody@huawei.com; venugopalreddyk@huawei.com; =
udayasree.palle@huawei.com
Subject: New Version Notification for =
draft-dhody-pce-pcep-p2mp-per-destination-03.txt

=20

=20

A new version of I-D, draft-dhody-pce-pcep-p2mp-per-destination-03.txt

has been successfully submitted by Dhruv Dhody and posted to the

IETF repository.

=20

Filename:   draft-dhody-pce-pcep-p2mp-per-destination

Revision:   03

Title:            Supporting explicit inclusion or exclusion of abstract =
nodes for a subset of P2MP destinations in Path Computation Element =
Communication Protocol (PCEP).

Creation date:    2012-10-11

WG ID:            Individual Submission

Number of pages: 12

URL:             =
http://www.ietf.org/internet-drafts/draft-dhody-pce-pcep-p2mp-per-destina=
tion-03.txt

Status:          =
http://datatracker.ietf.org/doc/draft-dhody-pce-pcep-p2mp-per-destination=


Htmlized:        =
http://tools.ietf.org/html/draft-dhody-pce-pcep-p2mp-per-destination-03

Diff:            =
http://www.ietf.org/rfcdiff?url2=3Ddraft-dhody-pce-pcep-p2mp-per-destinat=
ion-03

=20

Abstract:

   The ability to determine paths of point-to-multipoint (P2MP)

   Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS)

   Traffic Engineering Label Switched Paths (TE LSPs) is one the key

   requirements for Path Computation Element (PCE).  [RFC6006] and

   [PCE-P2MP-PROCEDURES] describes these mechanisms for intra and inter

   domain path computation via PCE.

=20

   This document describes the need for explicitly specifying abstract

   nodes for inclusion or exclusion for a subset of destinations during

   the Point to Multipoint (P2MP) path computation via PCE.  Further an

   extension to the PCE communication Protocol (PCEP) for P2MP is

   suggested to support this.

=20

                                                                         =
        =20

=20

=20

The IETF Secretariat

=20


------=_NextPart_000_0060_01CDA80A.CCCEB2D0
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoPlainText>Dear =
All,<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText>We have uploaded a new revision to this ID. =
<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText>- removed the use of word &quot;explicit-path&quot; =
as it was contradicting its meaning with respect to =
RSVP<o:p></o:p></p><p class=3DMsoPlainText>- explicitly specifying =
abstract nodes for inclusion or exclusion for a subset of P2MP =
destinations<o:p></o:p></p><p class=3DMsoPlainText>- Clarify its use in =
Inter-domain core-tree based path computation<o:p></o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>As =
usual comments are most welcome....<o:p></o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText>Regards,<o:p></o:p></p><p =
class=3DMsoPlainText>Dhruv<o:p></o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText>-----Original Message-----<br>From: =
internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] <br>Sent: =
Thursday, October 11, 2012 10:50 PM<br>To: dhruv.ietf@gmail.com<br>Cc: =
dhruv.dhody@huawei.com; venugopalreddyk@huawei.com; =
udayasree.palle@huawei.com<br>Subject: New Version Notification for =
draft-dhody-pce-pcep-p2mp-per-destination-03.txt<o:p></o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>A new =
version of I-D, =
draft-dhody-pce-pcep-p2mp-per-destination-03.txt<o:p></o:p></p><p =
class=3DMsoPlainText>has been successfully submitted by Dhruv Dhody and =
posted to the<o:p></o:p></p><p class=3DMsoPlainText>IETF =
repository.<o:p></o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText>Filename:=C2=A0=C2=A0  =
draft-dhody-pce-pcep-p2mp-per-destination<o:p></o:p></p><p =
class=3DMsoPlainText>Revision:=C2=A0=C2=A0  03<o:p></o:p></p><p =
class=3DMsoPlainText>Title:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0  Supporting explicit inclusion or exclusion of =
abstract nodes for a subset of P2MP destinations in Path Computation =
Element Communication Protocol (PCEP).<o:p></o:p></p><p =
class=3DMsoPlainText>Creation date:=C2=A0=C2=A0=C2=A0  =
2012-10-11<o:p></o:p></p><p class=3DMsoPlainText>WG =
ID:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0  =
Individual Submission<o:p></o:p></p><p class=3DMsoPlainText>Number of =
pages: 12<o:p></o:p></p><p =
class=3DMsoPlainText>URL:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 =
http://www.ietf.org/internet-drafts/draft-dhody-pce-pcep-p2mp-per-destina=
tion-03.txt<o:p></o:p></p><p =
class=3DMsoPlainText>Status:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 =
http://datatracker.ietf.org/doc/draft-dhody-pce-pcep-p2mp-per-destination=
<o:p></o:p></p><p =
class=3DMsoPlainText>Htmlized:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
http://tools.ietf.org/html/draft-dhody-pce-pcep-p2mp-per-destination-03<o=
:p></o:p></p><p =
class=3DMsoPlainText>Diff:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 =
http://www.ietf.org/rfcdiff?url2=3Ddraft-dhody-pce-pcep-p2mp-per-destinat=
ion-03<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText>Abstract:<o:p></o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 The ability to determine paths of =
point-to-multipoint (P2MP)<o:p></o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 Multiprotocol Label Switching (MPLS) =
and Generalized MPLS (GMPLS)<o:p></o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 Traffic Engineering Label Switched =
Paths (TE LSPs) is one the key<o:p></o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 requirements for Path Computation =
Element (PCE).=C2=A0 [RFC6006] and<o:p></o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 [PCE-P2MP-PROCEDURES] describes these =
mechanisms for intra and inter<o:p></o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 domain path computation via =
PCE.<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 This document describes the need for =
explicitly specifying abstract<o:p></o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 nodes for inclusion or exclusion for a =
subset of destinations during<o:p></o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 the Point to Multipoint (P2MP) path =
computation via PCE.=C2=A0 Further an<o:p></o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 extension to the PCE communication =
Protocol (PCEP) for P2MP is<o:p></o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0 suggested to support =
this.<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>The =
IETF Secretariat<o:p></o:p></p><p =
class=3DMsoPlainText><o:p>&nbsp;</o:p></p></div></body></html>
------=_NextPart_000_0060_01CDA80A.CCCEB2D0--

From jvasseur@cisco.com  Sun Oct 14 23:13:19 2012
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From: "JP Vasseur (jvasseur)" <jvasseur@cisco.com>
To: Peng JIANG <pe-jiang@kddi.com>
Thread-Topic: About draft-kumaki-murai-pce-pcep-extension-l3vpn
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Cc: "<pce@ietf.org>" <pce@ietf.org>, "<jpv@cisco.com>" <jpv@cisco.com>
Subject: Re: [Pce] About draft-kumaki-murai-pce-pcep-extension-l3vpn
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Dear Jiang-san,

On Oct 15, 2012, at 4:20 AM, Peng JIANG wrote:

> Dear JP,
>=20
> I am one of the co-authors of draft-kumaki-murai-pce-pcep-
> extension-l3vpn. This draft defines the PCEP extensions for the=20
> dynamic creation of MPLS TE LSPs between BGP/MPLS IP-VPN sites.
>=20
> We have been waiting for the signaling protocol(draft-kumaki-
> murai-l3vpn-rsvp-te) to be standarized. Now, the IESG Last Call=20
> has finished and we are now waiting for the Go-Ahead sign of the
> sponsor AD.
>=20
> Since the signaling protocol standardization is almost finished=20
> now, we are considering progressing the PCEP extension draft to=20
> a WG item.
>=20
> It has been a while since we last present the WG. Do you think=20
> it is proper that we remind the WG on the list about the=20
> contents of the PCEP extension together with the progress of the
> signaling protocol and then ask for WG last call? I think we=20
> have agreed to progress the PCEP extension once the signaling=20
> protocol standardization is finished.
>=20

JP> Yes I believe that it is now time to get back to the PCE WG for a last =
presentation.

Thanks!

JP.

> Best Regards,
> Peng JIANG
> KDDI


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Subject: [Pce] About draft-kumaki-murai-pce-pcep-extension-l3vpn
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Dear JP,

I am one of the co-authors of draft-kumaki-murai-pce-pcep-
extension-l3vpn. This draft defines the PCEP extensions for the 
dynamic creation of MPLS TE LSPs between BGP/MPLS IP-VPN sites.

We have been waiting for the signaling protocol(draft-kumaki-
murai-l3vpn-rsvp-te) to be standarized. Now, the IESG Last Call 
has finished and we are now waiting for the Go-Ahead sign of the
 sponsor AD.

Since the signaling protocol standardization is almost finished 
now, we are considering progressing the PCEP extension draft to 
a WG item.

It has been a while since we last present the WG. Do you think 
it is proper that we remind the WG on the list about the 
contents of the PCEP extension together with the progress of the
 signaling protocol and then ask for WG last call? I think we 
have agreed to progress the PCEP extension once the signaling 
protocol standardization is finished.

Best Regards,
Peng JIANG
KDDI

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To: jvasseur@cisco.com, pe-jiang@kddi.com
From: Peng JIANG <pe-jiang@kddi.com>
References: <201210151120.AHI81244.QFtBOHJK@kddi.com> <03B78081B371D44390ED6E7BADBB4A7721FE06A3@xmb-rcd-x02.cisco.com>
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Cc: ta-miyasaka@kddi.com, pce@ietf.org, jpv@cisco.com
Subject: Re: [Pce] About draft-kumaki-murai-pce-pcep-extension-l3vpn
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Dear JP,
Cc: KDDI Miyasaka-san

Thank you very much for your quick reply.

> JP> Yes I believe that it is now time to get back to the PCE WG for a last 
presentation.

Thank you very much for your suggestion.
We would like to request a presentation slot for 5 or 10 minutes.
Could you please assign one to us?
My colleague Miyasaka-san will attend IETF85 and he is willing 
to make this presentation.

Best Regards,
Peng JIANG
KDDI


> Dear Jiang-san,
> 
> On Oct 15, 2012, at 4:20 AM, Peng JIANG wrote:
> 
> > Dear JP,
> > 
> > I am one of the co-authors of draft-kumaki-murai-pce-pcep-
> > extension-l3vpn. This draft defines the PCEP extensions for the 
> > dynamic creation of MPLS TE LSPs between BGP/MPLS IP-VPN sites.
> > 
> > We have been waiting for the signaling protocol(draft-kumaki-
> > murai-l3vpn-rsvp-te) to be standarized. Now, the IESG Last Call 
> > has finished and we are now waiting for the Go-Ahead sign of the
> > sponsor AD.
> > 
> > Since the signaling protocol standardization is almost finished 
> > now, we are considering progressing the PCEP extension draft to 
> > a WG item.
> > 
> > It has been a while since we last present the WG. Do you think 
> > it is proper that we remind the WG on the list about the 
> > contents of the PCEP extension together with the progress of the
> > signaling protocol and then ask for WG last call? I think we 
> > have agreed to progress the PCEP extension once the signaling 
> > protocol standardization is finished.
> > 
> 
> JP> Yes I believe that it is now time to get back to the PCE WG for a last 
presentation.
> 
> Thanks!
> 
> JP.
> 
> > Best Regards,
> > Peng JIANG
> > KDDI
> 
> _______________________________________________
> Pce mailing list
> Pce@ietf.org
> https://www.ietf.org/mailman/listinfo/pce
> 

From internet-drafts@ietf.org  Mon Oct 15 15:07:51 2012
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Subject: [Pce] I-D Action: draft-ietf-pce-stateful-pce-02.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Path Computation Element Working Group of=
 the IETF.

	Title           : PCEP Extensions for Stateful PCE
	Author(s)       : Edward Crabbe
                          Jan Medved
                          Ina Minei
                          Robert Varga
	Filename        : draft-ietf-pce-stateful-pce-02.txt
	Pages           : 49
	Date            : 2012-10-15

Abstract:
   The Path Computation Element Communication Protocol (PCEP) provides
   mechanisms for Path Computation Elements (PCEs) to perform path
   computations in response to Path Computation Clients (PCCs) requests.

   Although PCEP explicitly makes no assumptions regarding the
   information available to the PCE, it also makes no provisions for
   synchronization or PCE control of timing and sequence of path
   computations within and across PCEP sessions.  This document
   describes a set of extensions to PCEP to enable stateful control of
   MPLS-TE and GMPLS tunnels via PCEP.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pce-stateful-pce

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-pce-stateful-pce-02

A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-pce-stateful-pce-02


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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From: Edward Crabbe <edc@google.com>
Date: Thu, 18 Oct 2012 10:43:23 -0700
Message-ID: <CACKN6JEnqt_0jxOZrfPv9Xbr_t+QCwwVfZyHFidVyM+=DoLHcA@mail.gmail.com>
To: "Zhangxian (Xian)" <zhang.xian@huawei.com>
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Xian,

This is not accurate I'm afraid.  We have presented the original
(pre-split) draft at almost every meeting for the past several years, and
have had WG consensus on it's acceptance as a WG document on both list and
in meetings. as well as  We have discussed the split at the last
three consecutive IETF meetings, and explicitly asked the chairs in
Vancouver.  This document is simply the core framework split from the
/already accepted/ working group document, and the chairs had agreed to
accept the core document as a draft given that the parent doc had already
been accepted and (assuming near content parity).

So yeah, there's been quite a bit of discussion on this over a number of
years. :P

I'm not sure that issuing an applicability draft first is mandatory SOP;
 there are a number of drafts that simply have an applicability section
within the draft (as ours does): presenting applicability, requirements
and framework sequentially.

With regard to our (now public) conversation, you've misinterpreted.   Last
IETF we discussed moving the applicability section into the a single
document with you (without conclusion I might note), which has nothing to
do with this draft.  We tentatively agreed to move ahead with merging the
already extant applicability section of our draft into yours as well as
assuming co-authorship.  We also agreed that the *framework* must provide
the capability to create general extensions for MPLS & GMPLS etc (thus
/passing mention/ of GMPLS AND the reference to *YOUR* document.

cheersm

  -ed





On Thu, Oct 18, 2012 at 2:23 AM, Zhangxian (Xian) <zhang.xian@huawei.com>wr=
ote:

> Hi, PCE'er,
>
>     I just noticed that this WG document has been updated without any WG
> decisions/discussions. As I recall, there is no sufficient discussion
> during last IETF meeting, nor any public email discussion, with regard to
> how to proceed with this WG document. As a young engineer involved in IET=
F
> work, a standard way for updating a WG document, from what I observe,
> should it be that any modifications are based on the WG discussion?
>
>     During last IETF meeting, I presented a proposal with regard to
> "stateful PCE" work. To state again, we would like to see this work follo=
ws
> a standard PCE WG procedure. By saying a standard procedure, I mean that
> "stateful PCE" should be driven by applicability/framework/requirements,
> then protocol extensions. Just to give a few examples which is currently
> listed as PCE WG drafts as well as RFCs: pcep extension for gmpls,
> inter-layer, hierarchical PCE and P2MP etc. All of them moved forward wit=
h
> applicability/framework/requirements first. There must be a valid reason
> for this rationale, right? I do not see why we should treat this draft as
> an exception.
>
>     Unfortunately, we were not given sufficient time for a WG discussion
> on our proposal. However, as suggested by Ed., a bunch of us (Ramon, Osca=
r,
> Fatai, Young and me) had an offline discussion with him, and the group
> roughly agreed to move forward to the direction that we proposed above.
>
>     However, I don=E2=80=99t see this draft is moving to that direction f=
rom the
> updated WG draft, even though one of our suggestions (i.e., GMPLS should =
be
> covered) is partially captured in the updated WG draft.
>
>     Therefore, I would like to request more discussion in the PCE list on
> how to move forward stateful PCE topic.
>
>
> Regards,
>
> Xian
>
>
> -----Original Message-----
> From: pce-bounces@ietf.org [mailto:pce-bounces@ietf.org] On Behalf Of
> internet-drafts@ietf.org
> Sent: 2012=E5=B9=B410=E6=9C=8816=E6=97=A5 6:08
> To: i-d-announce@ietf.org
> Cc: pce@ietf.org
> Subject: [Pce] I-D Action: draft-ietf-pce-stateful-pce-02.txt
>
>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>  This draft is a work item of the Path Computation Element Working Group
> of the IETF.
>
>         Title           : PCEP Extensions for Stateful PCE
>         Author(s)       : Edward Crabbe
>                           Jan Medved
>                           Ina Minei
>                           Robert Varga
>         Filename        : draft-ietf-pce-stateful-pce-02.txt
>         Pages           : 49
>         Date            : 2012-10-15
>
> Abstract:
>    The Path Computation Element Communication Protocol (PCEP) provides
>    mechanisms for Path Computation Elements (PCEs) to perform path
>    computations in response to Path Computation Clients (PCCs) requests.
>
>    Although PCEP explicitly makes no assumptions regarding the
>    information available to the PCE, it also makes no provisions for
>    synchronization or PCE control of timing and sequence of path
>    computations within and across PCEP sessions.  This document
>    describes a set of extensions to PCEP to enable stateful control of
>    MPLS-TE and GMPLS tunnels via PCEP.
>
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-pce-stateful-pce
>
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-ietf-pce-stateful-pce-02
>
> A diff from the previous version is available at:
> http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-pce-stateful-pce-02
>
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> _______________________________________________
> Pce mailing list
> Pce@ietf.org
> https://www.ietf.org/mailman/listinfo/pce
> _______________________________________________
> Pce mailing list
> Pce@ietf.org
> https://www.ietf.org/mailman/listinfo/pce
>

--14dae9340f65e1d06804cc58eea0
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div>Xian,</div><div><br></div><div>This is not accurate I&#39;m afraid. =
=C2=A0We have presented the original (pre-split) draft at almost every meet=
ing for the past several years, and have had WG consensus on it&#39;s accep=
tance as a WG document on both list and in meetings. as well as =C2=A0We ha=
ve discussed the split at the last three=C2=A0consecutive=C2=A0IETF meeting=
s, and explicitly asked the chairs in Vancouver. =C2=A0This document is sim=
ply the core framework split from the /already accepted/ working group docu=
ment, and the chairs had agreed to accept the core document as a draft give=
n that the parent doc had already been accepted and (assuming near content =
parity).</div>


<div><br></div><div>So yeah, there&#39;s been quite a bit of discussion on =
this over a number of years. :P</div><div><br></div><div>I&#39;m not sure t=
hat issuing an applicability draft first is mandatory SOP; =C2=A0there are =
a number of drafts that simply have an applicability section within the dra=
ft (as ours does): presenting applicability,=C2=A0requirements and=C2=A0fra=
mework sequentially. =C2=A0</div>


<div><br></div><div>With regard to our (now public) conversation, you&#39;v=
e misinterpreted. =C2=A0=C2=A0Last IETF we discussed moving the applicabili=
ty section into the a single document with you (without conclusion I might =
note), which has nothing to do with this draft.=C2=A0=C2=A0We tentatively a=
greed to move ahead with merging the already extant applicability section o=
f our draft into yours as well as assuming co-authorship. =C2=A0We also agr=
eed that the *framework* must provide the capability to create general exte=
nsions for MPLS &amp; GMPLS etc (thus /passing mention/ of GMPLS AND the re=
ference to *YOUR* document.</div>


<div><br></div><div>cheersm</div><div><br></div><div>=C2=A0 -ed</div><div><=
br></div><div><br></div><div><br></div><div><br></div><br><div class=3D"gma=
il_quote">On Thu, Oct 18, 2012 at 2:23 AM, Zhangxian (Xian) <span dir=3D"lt=
r">&lt;<a href=3D"mailto:zhang.xian@huawei.com" target=3D"_blank">zhang.xia=
n@huawei.com</a>&gt;</span> wrote:<br>


<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Hi, PCE&#39;er,<br>
<br>
=C2=A0 =C2=A0 I just noticed that this WG document has been updated without=
 any WG decisions/discussions. As I recall, there is no sufficient discussi=
on during last IETF meeting, nor any public email discussion, with regard t=
o how to proceed with this WG document. As a young engineer involved in IET=
F work, a standard way for updating a WG document, from what I observe, sho=
uld it be that any modifications are based on the WG discussion?<br>



<br>
=C2=A0 =C2=A0 During last IETF meeting, I presented a proposal with regard =
to &quot;stateful PCE&quot; work. To state again, we would like to see this=
 work follows a standard PCE WG procedure. By saying a standard procedure, =
I mean that &quot;stateful PCE&quot; should be driven by applicability/fram=
ework/requirements, then protocol extensions. Just to give a few examples w=
hich is currently listed as PCE WG drafts as well as RFCs: pcep extension f=
or gmpls, inter-layer, hierarchical PCE and P2MP etc. All of them moved for=
ward with applicability/framework/requirements first. There must be a valid=
 reason for this rationale, right? I do not see why we should treat this dr=
aft as an exception.<br>



<br>
=C2=A0 =C2=A0 Unfortunately, we were not given sufficient time for a WG dis=
cussion on our proposal. However, as suggested by Ed., a bunch of us (Ramon=
, Oscar, Fatai, Young and me) had an offline discussion with him, and the g=
roup roughly agreed to move forward to the direction that we proposed above=
.<br>



<br>
=C2=A0 =C2=A0 However, I don=E2=80=99t see this draft is moving to that dir=
ection from the updated WG draft, even though one of our suggestions (i.e.,=
 GMPLS should be covered) is partially captured in the updated WG draft.<br=
>
<br>
=C2=A0 =C2=A0 Therefore, I would like to request more discussion in the PCE=
 list on how to move forward stateful PCE topic.<br>
<br>
<br>
Regards,<br>
<br>
Xian<br>
<div><div><br>
<br>
-----Original Message-----<br>
From: <a href=3D"mailto:pce-bounces@ietf.org" target=3D"_blank">pce-bounces=
@ietf.org</a> [mailto:<a href=3D"mailto:pce-bounces@ietf.org" target=3D"_bl=
ank">pce-bounces@ietf.org</a>] On Behalf Of <a href=3D"mailto:internet-draf=
ts@ietf.org" target=3D"_blank">internet-drafts@ietf.org</a><br>



Sent: 2012=E5=B9=B410=E6=9C=8816=E6=97=A5 6:08<br>
To: <a href=3D"mailto:i-d-announce@ietf.org" target=3D"_blank">i-d-announce=
@ietf.org</a><br>
Cc: <a href=3D"mailto:pce@ietf.org" target=3D"_blank">pce@ietf.org</a><br>
Subject: [Pce] I-D Action: draft-ietf-pce-stateful-pce-02.txt<br>
<br>
<br>
A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.<br>
=C2=A0This draft is a work item of the Path Computation Element Working Gro=
up of the IETF.<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : PCEP=
 Extensions for Stateful PCE<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Author(s) =C2=A0 =C2=A0 =C2=A0 : Edward Crabbe<=
br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Jan Medved<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Ina Minei<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Robert Varga<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename =C2=A0 =C2=A0 =C2=A0 =C2=A0: draft-iet=
f-pce-stateful-pce-02.txt<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 : 49<b=
r>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 2012-10-15<br>
<br>
Abstract:<br>
=C2=A0 =C2=A0The Path Computation Element Communication Protocol (PCEP) pro=
vides<br>
=C2=A0 =C2=A0mechanisms for Path Computation Elements (PCEs) to perform pat=
h<br>
=C2=A0 =C2=A0computations in response to Path Computation Clients (PCCs) re=
quests.<br>
<br>
=C2=A0 =C2=A0Although PCEP explicitly makes no assumptions regarding the<br=
>
=C2=A0 =C2=A0information available to the PCE, it also makes no provisions =
for<br>
=C2=A0 =C2=A0synchronization or PCE control of timing and sequence of path<=
br>
=C2=A0 =C2=A0computations within and across PCEP sessions. =C2=A0This docum=
ent<br>
=C2=A0 =C2=A0describes a set of extensions to PCEP to enable stateful contr=
ol of<br>
=C2=A0 =C2=A0MPLS-TE and GMPLS tunnels via PCEP.<br>
<br>
<br>
<br>
The IETF datatracker status page for this draft is:<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-pce-stateful-pce" ta=
rget=3D"_blank">https://datatracker.ietf.org/doc/draft-ietf-pce-stateful-pc=
e</a><br>
<br>
There&#39;s also a htmlized version available at:<br>
<a href=3D"http://tools.ietf.org/html/draft-ietf-pce-stateful-pce-02" targe=
t=3D"_blank">http://tools.ietf.org/html/draft-ietf-pce-stateful-pce-02</a><=
br>
<br>
A diff from the previous version is available at:<br>
<a href=3D"http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-pce-stateful-pce-0=
2" target=3D"_blank">http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-pce-stat=
eful-pce-02</a><br>
<br>
<br>
Internet-Drafts are also available by anonymous FTP at:<br>
<a href=3D"ftp://ftp.ietf.org/internet-drafts/" target=3D"_blank">ftp://ftp=
.ietf.org/internet-drafts/</a><br>
<br>
_______________________________________________<br>
Pce mailing list<br>
<a href=3D"mailto:Pce@ietf.org" target=3D"_blank">Pce@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/pce" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/pce</a><br>
_______________________________________________<br>
Pce mailing list<br>
<a href=3D"mailto:Pce@ietf.org" target=3D"_blank">Pce@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/pce" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/pce</a><br>
</div></div></blockquote></div><br>

--14dae9340f65e1d06804cc58eea0--

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Subject: [Pce] I-D Action: draft-ietf-pce-wson-routing-wavelength-08.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Path Computation Element Working Group of=
 the IETF.

	Title           : PCEP Requirements for WSON Routing and Wavelength Assign=
ment
	Author(s)       : Young Lee
                          Greg Bernstein
                          Jonas Martensson
                          Tomonori Takeda
                          Takehiro Tsuritani
                          Oscar Gonzalez de Dios
	Filename        : draft-ietf-pce-wson-routing-wavelength-08.txt
	Pages           : 13
	Date            : 2012-10-18

Abstract:
   This memo provides application-specific requirements for the Path
   Computation Element communication Protocol (PCEP) for the support of
   Wavelength Switched Optical Networks (WSON). Lightpath provisioning
   in WSONs requires a routing and wavelength assignment (RWA) process.
   From a path computation perspective, wavelength assignment is the
   process of determining which wavelength can be used on each hop of a
   path and forms an additional routing constraint to optical light
   path computation. Requirements for Optical impairments will be
   addressed in a separate document.





The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pce-wson-routing-wavelength

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-pce-wson-routing-wavelength-08

A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-pce-wson-routing-wavelength-08


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


From ramon.casellas@cttc.es  Sat Oct 20 00:00:02 2012
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Subject: [Pce] stateful PCE - moving forward & next steps
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Dear PCErs,

We've taken this issue off-list and discussed. A summary of our agreed 
upon next steps follows for WG review:

1/ - We have agreed to merge the applicability portion of the existing 
WG draft (draft-ietf-pce-stateful-pce) with Xian’s presented draft on 
this very same aspect. This new joint/merged draft, temporarily referred 
to as draft-zhang-pce-stateful-pce-app-03, will tentatively be ready for 
IETF86. It will be informational in nature, highlighting the benefits 
and use cases of a stateful PCE. While this split is by no means 
mandatory, it does address some comments raised during WG adoption. 
Selected text and wording from to current framework draft 
draft-ietf-pce-stateful-pce-02 will be moved to the applicability, 
notably in sections 2 and 3.

2/ - draft-ietf-pce-stateful-pce-02 is relatively mature, and a 
significant amount of time has been invested on it. It has been recently 
updated to acknowledge/reflect that PCEP (and consequently any PCEP 
functional extensions) needs to be extended to fully cover GMPLS 
networks in a way similar to how RFC5440 is extended by 
draft-ietf-pce-gmpls. This draft already covers most refined details 
such as protocol procedures & messages, LSP identifiers, LSP descriptive 
names, etc., while leaving technology specific aspects aside.

2.a – it is worth noting that, although draft-zhang-pce-stateful-app 
will surely need to follow regular draft procedures, the chairs 
explicitly agreed to accept the post-split framework as a working group 
document given the acceptance of the original stateful doc.

3/ Since one of the additional comments during the WG adoption poll 
(e.g., by yours truly and others) was that, in its previous form, 
draft-ietf-pce-stateful-pce did not cover GMPLS extensions and could 
limit its applicability in transport networks, specific “solutions” 
documents addressing extensions will be developed. They will be based on 
the framework and will refer to it.

-A consequence of this is that draft "Current Path Computation Element 
(PCE) Protocol Extension for Stateful PCE Usage in GMPLS Networks", aka 
draft-zhang-pce-pcep-stateful-pce-gmpls-01.txt will be rewritten to 
follow the new apps & fwk and will define encodings e.g. at the "message 
level" (such as extended RBNF for a PCRpt message considering 
GMPLS-specific extensions).

-Likewise, for RSVP-TE covering non-GMPLS cases & networks, a new draft 
has just been submitted and will be presented 
(draft-crabbe-pce-stateful-pce-mpls-te-00)

-Within reasonable standard procedures, the GMPLS solutions draft can 
just point at the relevant sections within 
draft-crabbe-pce-stateful-pce-mpls-te-00 and complete where appropriate 
/ necessary.


4/ Other stateful-PCE based applications will be identified in the 
future. Our suggested procedure will consist on extending the basic 
framework document by means of other drafts that complement it and build 
upon the core framework.



Thank you,

Ramon, on behalf of the stateful-PCErs



-- 
Ramon Casellas, Ph.D.
Research Associate - Optical Networking Area -- http://wikiona.cttc.es
CTTC - Centre Tecnològic de Telecomunicacions de Catalunya, PMT Ed B4
Av. Carl Friedrich Gauss, 7 - 08860 Castelldefels (Barcelona) - Spain
Tel.: +34 93 645 29 00 -- Fax. +34 93 645 29 01


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From: "Zhangxian (Xian)" <zhang.xian@huawei.com>
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Date: Mon, 22 Oct 2012 12:29:20 -0700
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Subject: [Pce] I-D Action: draft-ietf-pce-gmpls-pcep-extensions-07.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Path Computation Element Working Group of=
 the IETF.

	Title           : PCEP extensions for GMPLS
	Author(s)       : Cyril Margaria
                          Oscar Gonzalez de Dios
                          Fatai Zhang
	Filename        : draft-ietf-pce-gmpls-pcep-extensions-07.txt
	Pages           : 42
	Date            : 2012-10-22

Abstract:
   This memo provides extensions for the Path Computation Element
   communication Protocol (PCEP) for the support of GMPLS control plane.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pce-gmpls-pcep-extensions

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-pce-gmpls-pcep-extensions-07

A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-pce-gmpls-pcep-extensions-07


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


From julien.meuric@orange.com  Thu Oct 25 02:39:35 2012
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Date: Thu, 25 Oct 2012 11:39:29 +0200
From: Julien Meuric <julien.meuric@orange.com>
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Cc: "pce@ietf.org" <pce@ietf.org>
Subject: Re: [Pce] stateful PCE - moving forward & next steps
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Hi Ramon, hi contributors from shadow.

We appreciate the effort of all those who are working on this work. It 
will be interesting to discuss the progress during our meeting in 
Atlanta. In the meantime, do not hesitate to share with the WG using the 
mailing list, like your message below.

One 1st comment at this stage: you seem to suggest that the idea is to 
have separate document for MPLS-TE and GMPLS, but you do not give 
rationale. Apart from our history of RFC 5440 + draft-ietf-pce-gmpls 
(even with its scope, the former had a hard time), is there a particular 
reason for this choice? Do you expect much difference between those 2 
kinds of extensions? Also keep in mind that GMPLS includes PSC...

Thank you,

Julien


On 10/20/2012 08:59, Ramon Casellas wrote:
> Dear PCErs,
>
> We've taken this issue off-list and discussed. A summary of our agreed 
> upon next steps follows for WG review:
>
> 1/ - We have agreed to merge the applicability portion of the existing 
> WG draft (draft-ietf-pce-stateful-pce) with Xian’s presented draft on 
> this very same aspect. This new joint/merged draft, temporarily 
> referred to as draft-zhang-pce-stateful-pce-app-03, will tentatively 
> be ready for IETF86. It will be informational in nature, highlighting 
> the benefits and use cases of a stateful PCE. While this split is by 
> no means mandatory, it does address some comments raised during WG 
> adoption. Selected text and wording from to current framework draft 
> draft-ietf-pce-stateful-pce-02 will be moved to the applicability, 
> notably in sections 2 and 3.
>
> 2/ - draft-ietf-pce-stateful-pce-02 is relatively mature, and a 
> significant amount of time has been invested on it. It has been 
> recently updated to acknowledge/reflect that PCEP (and consequently 
> any PCEP functional extensions) needs to be extended to fully cover 
> GMPLS networks in a way similar to how RFC5440 is extended by 
> draft-ietf-pce-gmpls. This draft already covers most refined details 
> such as protocol procedures & messages, LSP identifiers, LSP 
> descriptive names, etc., while leaving technology specific aspects aside.
>
> 2.a – it is worth noting that, although draft-zhang-pce-stateful-app 
> will surely need to follow regular draft procedures, the chairs 
> explicitly agreed to accept the post-split framework as a working 
> group document given the acceptance of the original stateful doc.
>
> 3/ Since one of the additional comments during the WG adoption poll 
> (e.g., by yours truly and others) was that, in its previous form, 
> draft-ietf-pce-stateful-pce did not cover GMPLS extensions and could 
> limit its applicability in transport networks, specific “solutions” 
> documents addressing extensions will be developed. They will be based 
> on the framework and will refer to it.
>
> -A consequence of this is that draft "Current Path Computation Element 
> (PCE) Protocol Extension for Stateful PCE Usage in GMPLS Networks", 
> aka draft-zhang-pce-pcep-stateful-pce-gmpls-01.txt will be rewritten 
> to follow the new apps & fwk and will define encodings e.g. at the 
> "message level" (such as extended RBNF for a PCRpt message considering 
> GMPLS-specific extensions).
>
> -Likewise, for RSVP-TE covering non-GMPLS cases & networks, a new 
> draft has just been submitted and will be presented 
> (draft-crabbe-pce-stateful-pce-mpls-te-00)
>
> -Within reasonable standard procedures, the GMPLS solutions draft can 
> just point at the relevant sections within 
> draft-crabbe-pce-stateful-pce-mpls-te-00 and complete where 
> appropriate / necessary.
>
>
> 4/ Other stateful-PCE based applications will be identified in the 
> future. Our suggested procedure will consist on extending the basic 
> framework document by means of other drafts that complement it and 
> build upon the core framework.
>
>
>
> Thank you,
>
> Ramon, on behalf of the stateful-PCErs
>
>
>


From ramon.casellas@cttc.es  Thu Oct 25 11:38:00 2012
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El 25/10/2012 11:39, Julien Meuric escribió:
>
> One 1st comment at this stage: you seem to suggest that the idea is to 
> have separate document for MPLS-TE and GMPLS, but you do not give 
> rationale. Apart from our history of RFC 5440 + draft-ietf-pce-gmpls 
> (even with its scope, the former had a hard time), is there a 
> particular reason for this choice? Do you expect much difference 
> between those 2 kinds of extensions? Also keep in mind that GMPLS 
> includes PSC...
>
Dear Julien, all

Thanks for the feedback, I understand your point about GMPLS and, if I 
recall correctly, one of the reasons mentioned in previous internal 
discussions was the relative maturity of one (RFC5440) with regard to 
the other (draft-ietf-pce-gmpls).

We can indeed discuss the different alternatives during IETF85, with all 
the involved parties, authors, and the WG.  Although, initially, I had a 
slight preference to integrate GMPLS, (as I mentioned a while ago in my 
review of Ed's earlier drafts), I am fine either way.

Maybe Ed, Jan, Ina, Fatai, Young, Xian or Oscar can comment on this?

Thanks and best regards,
R.


From edc@google.com  Thu Oct 25 11:46:17 2012
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From: Edward Crabbe <edc@google.com>
Date: Thu, 25 Oct 2012 11:45:34 -0700
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Subject: Re: [Pce] stateful PCE - moving forward & next steps
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Hey guys;

I'm not sure whether we're discussing the separation of extension drafts or
the framework draft here.  The framework draft will provide mechanisms to
support both extensions.  The extensions are separated because they are
supporting very different use cases and it is significantly cleaner from a
documentation maintenance and organization perspective.

best,
  -ed

On Thu, Oct 25, 2012 at 11:37 AM, Ramon Casellas <ramon.casellas@cttc.es>wr=
ote:

> El 25/10/2012 11:39, Julien Meuric escribi=F3:
>
>
>> One 1st comment at this stage: you seem to suggest that the idea is to
>> have separate document for MPLS-TE and GMPLS, but you do not give
>> rationale. Apart from our history of RFC 5440 + draft-ietf-pce-gmpls (ev=
en
>> with its scope, the former had a hard time), is there a particular reaso=
n
>> for this choice? Do you expect much difference between those 2 kinds of
>> extensions? Also keep in mind that GMPLS includes PSC...
>>
>>  Dear Julien, all
>
> Thanks for the feedback, I understand your point about GMPLS and, if I
> recall correctly, one of the reasons mentioned in previous internal
> discussions was the relative maturity of one (RFC5440) with regard to the
> other (draft-ietf-pce-gmpls).
>
> We can indeed discuss the different alternatives during IETF85, with all
> the involved parties, authors, and the WG.  Although, initially, I had a
> slight preference to integrate GMPLS, (as I mentioned a while ago in my
> review of Ed's earlier drafts), I am fine either way.
>
> Maybe Ed, Jan, Ina, Fatai, Young, Xian or Oscar can comment on this?
>
> Thanks and best regards,
> R.
>
>
> ______________________________**_________________
> Pce mailing list
> Pce@ietf.org
> https://www.ietf.org/mailman/**listinfo/pce<https://www.ietf.org/mailman/=
listinfo/pce>
>

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<div>Hey guys;</div><div><br></div>I&#39;m not sure whether we&#39;re discu=
ssing the separation of extension drafts or the framework draft here. =A0Th=
e framework draft will provide mechanisms to support both extensions. =A0Th=
e extensions are separated because they are supporting very different use c=
ases and it is significantly cleaner from a documentation maintenance and o=
rganization perspective. =A0<div>

<br></div><div>best,</div><div>=A0 -ed<br><br><div class=3D"gmail_quote">On=
 Thu, Oct 25, 2012 at 11:37 AM, Ramon Casellas <span dir=3D"ltr">&lt;<a hre=
f=3D"mailto:ramon.casellas@cttc.es" target=3D"_blank">ramon.casellas@cttc.e=
s</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">El 25/10/2012 11:39, Julien Meuric escribi=
=F3:<div class=3D"im"><br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<br>
One 1st comment at this stage: you seem to suggest that the idea is to have=
 separate document for MPLS-TE and GMPLS, but you do not give rationale. Ap=
art from our history of RFC 5440 + draft-ietf-pce-gmpls (even with its scop=
e, the former had a hard time), is there a particular reason for this choic=
e? Do you expect much difference between those 2 kinds of extensions? Also =
keep in mind that GMPLS includes PSC...<br>


<br>
</blockquote></div>
Dear Julien, all<br>
<br>
Thanks for the feedback, I understand your point about GMPLS and, if I reca=
ll correctly, one of the reasons mentioned in previous internal discussions=
 was the relative maturity of one (RFC5440) with regard to the other (draft=
-ietf-pce-gmpls).<br>


<br>
We can indeed discuss the different alternatives during IETF85, with all th=
e involved parties, authors, and the WG. =A0Although, initially, I had a sl=
ight preference to integrate GMPLS, (as I mentioned a while ago in my revie=
w of Ed&#39;s earlier drafts), I am fine either way.<br>


<br>
Maybe Ed, Jan, Ina, Fatai, Young, Xian or Oscar can comment on this?<br>
<br>
Thanks and best regards,<br>
R.<div class=3D"HOEnZb"><div class=3D"h5"><br>
<br>
______________________________<u></u>_________________<br>
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From cyril.margaria@nsn.com  Thu Oct 25 12:40:27 2012
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From: "Margaria, Cyril (NSN - DE/Munich)" <cyril.margaria@nsn.com>
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Dear PCErs

This revision includes editorial clarifications based on the feedback we =
received.=20
We think that the encoding and procedures are stable and we would like =
the WG to review=20
the document before we ask for Last call.=20

Your time and comments will be highly appreciated.=20


Best regards / Mit freundlichen Gr=FC=DFen
Cyril Margaria


> -----Original Message-----
> From: pce-bounces@ietf.org [mailto:pce-bounces@ietf.org] On Behalf Of
> ext internet-drafts@ietf.org
> Sent: Monday, October 22, 2012 9:29 PM
> To: i-d-announce@ietf.org
> Cc: pce@ietf.org
> Subject: [Pce] I-D Action: draft-ietf-pce-gmpls-pcep-extensions-07.txt
>=20
>=20
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>  This draft is a work item of the Path Computation Element Working
> Group of the IETF.
>=20
> 	Title           : PCEP extensions for GMPLS
> 	Author(s)       : Cyril Margaria
>                           Oscar Gonzalez de Dios
>                           Fatai Zhang
> 	Filename        : draft-ietf-pce-gmpls-pcep-extensions-07.txt
> 	Pages           : 42
> 	Date            : 2012-10-22
>=20
> Abstract:
>    This memo provides extensions for the Path Computation Element
>    communication Protocol (PCEP) for the support of GMPLS control
> plane.
>=20
>=20
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-pce-gmpls-pcep-extensions
>=20
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-ietf-pce-gmpls-pcep-extensions-07
>=20
> A diff from the previous version is available at:
> =
http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-pce-gmpls-pcep-extensions-
> 07
>=20
>=20
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>=20
> _______________________________________________
> Pce mailing list
> Pce@ietf.org
> https://www.ietf.org/mailman/listinfo/pce

From leeyoung@huawei.com  Thu Oct 25 14:18:38 2012
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From: Leeyoung <leeyoung@huawei.com>
To: Julien Meuric <julien.meuric@orange.com>, Ramon Casellas <ramon.casellas@cttc.es>
Thread-Topic: [Pce] stateful PCE - moving forward & next steps
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Hi Julien

Thanks for providing your useful feedback on the issues of the separation o=
f MPLS-TE version from GMPLS version of the solution draft for the stateful=
 PCE.=20
I think the separation was tentatively agreed by the authors of the two sep=
arate documents due to the differing interest of the authors who have diffe=
rent implementation needs (one for packet network; the other for transport =
network). I don't know if this would be a valid reason for the separation, =
but we are willing to hear from the WG feedback.=20

Thanks.
Young

-----Original Message-----
From: pce-bounces@ietf.org [mailto:pce-bounces@ietf.org] On Behalf Of Julie=
n Meuric
Sent: Thursday, October 25, 2012 4:39 AM
To: Ramon Casellas
Cc: pce@ietf.org
Subject: Re: [Pce] stateful PCE - moving forward & next steps

Hi Ramon, hi contributors from shadow.

We appreciate the effort of all those who are working on this work. It=20
will be interesting to discuss the progress during our meeting in=20
Atlanta. In the meantime, do not hesitate to share with the WG using the=20
mailing list, like your message below.

One 1st comment at this stage: you seem to suggest that the idea is to=20
have separate document for MPLS-TE and GMPLS, but you do not give=20
rationale. Apart from our history of RFC 5440 + draft-ietf-pce-gmpls=20
(even with its scope, the former had a hard time), is there a particular=20
reason for this choice? Do you expect much difference between those 2=20
kinds of extensions? Also keep in mind that GMPLS includes PSC...

Thank you,

Julien


On 10/20/2012 08:59, Ramon Casellas wrote:
> Dear PCErs,
>
> We've taken this issue off-list and discussed. A summary of our agreed=20
> upon next steps follows for WG review:
>
> 1/ - We have agreed to merge the applicability portion of the existing=20
> WG draft (draft-ietf-pce-stateful-pce) with Xian's presented draft on=20
> this very same aspect. This new joint/merged draft, temporarily=20
> referred to as draft-zhang-pce-stateful-pce-app-03, will tentatively=20
> be ready for IETF86. It will be informational in nature, highlighting=20
> the benefits and use cases of a stateful PCE. While this split is by=20
> no means mandatory, it does address some comments raised during WG=20
> adoption. Selected text and wording from to current framework draft=20
> draft-ietf-pce-stateful-pce-02 will be moved to the applicability,=20
> notably in sections 2 and 3.
>
> 2/ - draft-ietf-pce-stateful-pce-02 is relatively mature, and a=20
> significant amount of time has been invested on it. It has been=20
> recently updated to acknowledge/reflect that PCEP (and consequently=20
> any PCEP functional extensions) needs to be extended to fully cover=20
> GMPLS networks in a way similar to how RFC5440 is extended by=20
> draft-ietf-pce-gmpls. This draft already covers most refined details=20
> such as protocol procedures & messages, LSP identifiers, LSP=20
> descriptive names, etc., while leaving technology specific aspects aside.
>
> 2.a - it is worth noting that, although draft-zhang-pce-stateful-app=20
> will surely need to follow regular draft procedures, the chairs=20
> explicitly agreed to accept the post-split framework as a working=20
> group document given the acceptance of the original stateful doc.
>
> 3/ Since one of the additional comments during the WG adoption poll=20
> (e.g., by yours truly and others) was that, in its previous form,=20
> draft-ietf-pce-stateful-pce did not cover GMPLS extensions and could=20
> limit its applicability in transport networks, specific "solutions"=20
> documents addressing extensions will be developed. They will be based=20
> on the framework and will refer to it.
>
> -A consequence of this is that draft "Current Path Computation Element=20
> (PCE) Protocol Extension for Stateful PCE Usage in GMPLS Networks",=20
> aka draft-zhang-pce-pcep-stateful-pce-gmpls-01.txt will be rewritten=20
> to follow the new apps & fwk and will define encodings e.g. at the=20
> "message level" (such as extended RBNF for a PCRpt message considering=20
> GMPLS-specific extensions).
>
> -Likewise, for RSVP-TE covering non-GMPLS cases & networks, a new=20
> draft has just been submitted and will be presented=20
> (draft-crabbe-pce-stateful-pce-mpls-te-00)
>
> -Within reasonable standard procedures, the GMPLS solutions draft can=20
> just point at the relevant sections within=20
> draft-crabbe-pce-stateful-pce-mpls-te-00 and complete where=20
> appropriate / necessary.
>
>
> 4/ Other stateful-PCE based applications will be identified in the=20
> future. Our suggested procedure will consist on extending the basic=20
> framework document by means of other drafts that complement it and=20
> build upon the core framework.
>
>
>
> Thank you,
>
> Ramon, on behalf of the stateful-PCErs
>
>
>

_______________________________________________
Pce mailing list
Pce@ietf.org
https://www.ietf.org/mailman/listinfo/pce

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Date: Thu, 25 Oct 2012 19:05:59 -0700
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Subject: Re: [Pce] stateful PCE - moving forward & next steps
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I completely disagree.  I think it makes a great deal of sense from both
organizational and an implementation perspectives.

As a designer of these protocols, it makes a great deal of sense to
separate different extensions into different documents.  This improves
readability, makes draft revision simpler, decreases overall complexity for
draft readers and just makes great deal of sense from an organizational
perspective.

As a consumer of these protocols, I may want to encourage vendors to
implement one of these features without forcing them to implement both.
(in fact this is the case for Google; as a company we do not care about
GMPLS, we /do/ very much care about MPLS-TE.)

On Thu, Oct 25, 2012 at 6:27 PM, Zhangxian (Xian) <zhang.xian@huawei.com>wr=
ote:

> Hi, Dear Julien and all,
>
>    IMHO, the stateful PCEP protocol extensions for both MPLS and GMPLS
> have lots in common. So, my understanding is that there should be one
> extension document. However, the preference of different parties diverges=
.
> It would be good if we can hear more from the experts on the list which i=
s
> a better way to proceed.
>
> Regards,
>
> Xian
>
> -----Original Message-----
> From: pce-bounces@ietf.org [mailto:pce-bounces@ietf.org] On Behalf Of
> Julien Meuric
> Sent: 2012=E5=B9=B410=E6=9C=8825=E6=97=A5 17:39
> To: Ramon Casellas
> Cc: pce@ietf.org
> Subject: Re: [Pce] stateful PCE - moving forward & next steps
>
> Hi Ramon, hi contributors from shadow.
>
> We appreciate the effort of all those who are working on this work. It
> will be interesting to discuss the progress during our meeting in
> Atlanta. In the meantime, do not hesitate to share with the WG using the
> mailing list, like your message below.
>
> One 1st comment at this stage: you seem to suggest that the idea is to
> have separate document for MPLS-TE and GMPLS, but you do not give
> rationale. Apart from our history of RFC 5440 + draft-ietf-pce-gmpls
> (even with its scope, the former had a hard time), is there a particular
> reason for this choice? Do you expect much difference between those 2
> kinds of extensions? Also keep in mind that GMPLS includes PSC...
>
> Thank you,
>
> Julien
>
>
> On 10/20/2012 08:59, Ramon Casellas wrote:
> > Dear PCErs,
> >
> > We've taken this issue off-list and discussed. A summary of our agreed
> > upon next steps follows for WG review:
> >
> > 1/ - We have agreed to merge the applicability portion of the existing
> > WG draft (draft-ietf-pce-stateful-pce) with Xian=E2=80=99s presented dr=
aft on
> > this very same aspect. This new joint/merged draft, temporarily
> > referred to as draft-zhang-pce-stateful-pce-app-03, will tentatively
> > be ready for IETF86. It will be informational in nature, highlighting
> > the benefits and use cases of a stateful PCE. While this split is by
> > no means mandatory, it does address some comments raised during WG
> > adoption. Selected text and wording from to current framework draft
> > draft-ietf-pce-stateful-pce-02 will be moved to the applicability,
> > notably in sections 2 and 3.
> >
> > 2/ - draft-ietf-pce-stateful-pce-02 is relatively mature, and a
> > significant amount of time has been invested on it. It has been
> > recently updated to acknowledge/reflect that PCEP (and consequently
> > any PCEP functional extensions) needs to be extended to fully cover
> > GMPLS networks in a way similar to how RFC5440 is extended by
> > draft-ietf-pce-gmpls. This draft already covers most refined details
> > such as protocol procedures & messages, LSP identifiers, LSP
> > descriptive names, etc., while leaving technology specific aspects asid=
e.
> >
> > 2.a =E2=80=93 it is worth noting that, although draft-zhang-pce-statefu=
l-app
> > will surely need to follow regular draft procedures, the chairs
> > explicitly agreed to accept the post-split framework as a working
> > group document given the acceptance of the original stateful doc.
> >
> > 3/ Since one of the additional comments during the WG adoption poll
> > (e.g., by yours truly and others) was that, in its previous form,
> > draft-ietf-pce-stateful-pce did not cover GMPLS extensions and could
> > limit its applicability in transport networks, specific =E2=80=9Csoluti=
ons=E2=80=9D
> > documents addressing extensions will be developed. They will be based
> > on the framework and will refer to it.
> >
> > -A consequence of this is that draft "Current Path Computation Element
> > (PCE) Protocol Extension for Stateful PCE Usage in GMPLS Networks",
> > aka draft-zhang-pce-pcep-stateful-pce-gmpls-01.txt will be rewritten
> > to follow the new apps & fwk and will define encodings e.g. at the
> > "message level" (such as extended RBNF for a PCRpt message considering
> > GMPLS-specific extensions).
> >
> > -Likewise, for RSVP-TE covering non-GMPLS cases & networks, a new
> > draft has just been submitted and will be presented
> > (draft-crabbe-pce-stateful-pce-mpls-te-00)
> >
> > -Within reasonable standard procedures, the GMPLS solutions draft can
> > just point at the relevant sections within
> > draft-crabbe-pce-stateful-pce-mpls-te-00 and complete where
> > appropriate / necessary.
> >
> >
> > 4/ Other stateful-PCE based applications will be identified in the
> > future. Our suggested procedure will consist on extending the basic
> > framework document by means of other drafts that complement it and
> > build upon the core framework.
> >
> >
> >
> > Thank you,
> >
> > Ramon, on behalf of the stateful-PCErs
> >
> >
> >
>
> _______________________________________________
> Pce mailing list
> Pce@ietf.org
> https://www.ietf.org/mailman/listinfo/pce
>
> _______________________________________________
> Pce mailing list
> Pce@ietf.org
> https://www.ietf.org/mailman/listinfo/pce
>
>

--f46d04462dd23175ec04ccecc5f7
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

I completely disagree. =C2=A0I think it makes a great deal of sense from bo=
th organizational and an implementation perspectives.<div><br><div>As a des=
igner of these protocols, it makes a great deal of sense to separate differ=
ent extensions into different documents. =C2=A0This improves readability, m=
akes draft revision simpler, decreases overall complexity for draft readers=
 and just makes great deal of sense from an organizational perspective.=C2=
=A0</div>

<div><br></div><div><div>As a consumer of these protocols, I may want to en=
courage vendors to implement one of these features without forcing them to =
implement both.=C2=A0</div><div>(in fact this is the case for Google; as a =
company we do not care about GMPLS, we /do/ very much care about MPLS-TE.) =
=C2=A0<br>

<br><div class=3D"gmail_quote">On Thu, Oct 25, 2012 at 6:27 PM, Zhangxian (=
Xian) <span dir=3D"ltr">&lt;<a href=3D"mailto:zhang.xian@huawei.com" target=
=3D"_blank">zhang.xian@huawei.com</a>&gt;</span> wrote:<br><blockquote clas=
s=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pad=
ding-left:1ex">

Hi, Dear Julien and all,<br>
<br>
=C2=A0 =C2=A0IMHO, the stateful PCEP protocol extensions for both MPLS and =
GMPLS have lots in common. So, my understanding is that there should be one=
 extension document. However, the preference of different parties diverges.=
 It would be good if we can hear more from the experts on the list which is=
 a better way to proceed.<br>


<br>
Regards,<br>
<br>
Xian<br>
<div class=3D"im HOEnZb"><br>
-----Original Message-----<br>
From: <a href=3D"mailto:pce-bounces@ietf.org">pce-bounces@ietf.org</a> [mai=
lto:<a href=3D"mailto:pce-bounces@ietf.org">pce-bounces@ietf.org</a>] On Be=
half Of Julien Meuric<br>
</div><div class=3D"im HOEnZb">Sent: 2012=E5=B9=B410=E6=9C=8825=E6=97=A5 17=
:39<br>
To: Ramon Casellas<br>
Cc: <a href=3D"mailto:pce@ietf.org">pce@ietf.org</a><br>
Subject: Re: [Pce] stateful PCE - moving forward &amp; next steps<br>
<br>
</div><div class=3D"HOEnZb"><div class=3D"h5">Hi Ramon, hi contributors fro=
m shadow.<br>
<br>
We appreciate the effort of all those who are working on this work. It<br>
will be interesting to discuss the progress during our meeting in<br>
Atlanta. In the meantime, do not hesitate to share with the WG using the<br=
>
mailing list, like your message below.<br>
<br>
One 1st comment at this stage: you seem to suggest that the idea is to<br>
have separate document for MPLS-TE and GMPLS, but you do not give<br>
rationale. Apart from our history of RFC 5440 + draft-ietf-pce-gmpls<br>
(even with its scope, the former had a hard time), is there a particular<br=
>
reason for this choice? Do you expect much difference between those 2<br>
kinds of extensions? Also keep in mind that GMPLS includes PSC...<br>
<br>
Thank you,<br>
<br>
Julien<br>
<br>
<br>
On 10/20/2012 08:59, Ramon Casellas wrote:<br>
&gt; Dear PCErs,<br>
&gt;<br>
&gt; We&#39;ve taken this issue off-list and discussed. A summary of our ag=
reed<br>
&gt; upon next steps follows for WG review:<br>
&gt;<br>
&gt; 1/ - We have agreed to merge the applicability portion of the existing=
<br>
&gt; WG draft (draft-ietf-pce-stateful-pce) with Xian=E2=80=99s presented d=
raft on<br>
&gt; this very same aspect. This new joint/merged draft, temporarily<br>
&gt; referred to as draft-zhang-pce-stateful-pce-app-03, will tentatively<b=
r>
&gt; be ready for IETF86. It will be informational in nature, highlighting<=
br>
&gt; the benefits and use cases of a stateful PCE. While this split is by<b=
r>
&gt; no means mandatory, it does address some comments raised during WG<br>
&gt; adoption. Selected text and wording from to current framework draft<br=
>
&gt; draft-ietf-pce-stateful-pce-02 will be moved to the applicability,<br>
&gt; notably in sections 2 and 3.<br>
&gt;<br>
&gt; 2/ - draft-ietf-pce-stateful-pce-02 is relatively mature, and a<br>
&gt; significant amount of time has been invested on it. It has been<br>
&gt; recently updated to acknowledge/reflect that PCEP (and consequently<br=
>
&gt; any PCEP functional extensions) needs to be extended to fully cover<br=
>
&gt; GMPLS networks in a way similar to how RFC5440 is extended by<br>
&gt; draft-ietf-pce-gmpls. This draft already covers most refined details<b=
r>
&gt; such as protocol procedures &amp; messages, LSP identifiers, LSP<br>
&gt; descriptive names, etc., while leaving technology specific aspects asi=
de.<br>
&gt;<br>
&gt; 2.a =E2=80=93 it is worth noting that, although draft-zhang-pce-statef=
ul-app<br>
&gt; will surely need to follow regular draft procedures, the chairs<br>
&gt; explicitly agreed to accept the post-split framework as a working<br>
&gt; group document given the acceptance of the original stateful doc.<br>
&gt;<br>
&gt; 3/ Since one of the additional comments during the WG adoption poll<br=
>
&gt; (e.g., by yours truly and others) was that, in its previous form,<br>
&gt; draft-ietf-pce-stateful-pce did not cover GMPLS extensions and could<b=
r>
&gt; limit its applicability in transport networks, specific =E2=80=9Csolut=
ions=E2=80=9D<br>
&gt; documents addressing extensions will be developed. They will be based<=
br>
&gt; on the framework and will refer to it.<br>
&gt;<br>
&gt; -A consequence of this is that draft &quot;Current Path Computation El=
ement<br>
&gt; (PCE) Protocol Extension for Stateful PCE Usage in GMPLS Networks&quot=
;,<br>
&gt; aka draft-zhang-pce-pcep-stateful-pce-gmpls-01.txt will be rewritten<b=
r>
&gt; to follow the new apps &amp; fwk and will define encodings e.g. at the=
<br>
&gt; &quot;message level&quot; (such as extended RBNF for a PCRpt message c=
onsidering<br>
&gt; GMPLS-specific extensions).<br>
&gt;<br>
&gt; -Likewise, for RSVP-TE covering non-GMPLS cases &amp; networks, a new<=
br>
&gt; draft has just been submitted and will be presented<br>
&gt; (draft-crabbe-pce-stateful-pce-mpls-te-00)<br>
&gt;<br>
&gt; -Within reasonable standard procedures, the GMPLS solutions draft can<=
br>
&gt; just point at the relevant sections within<br>
&gt; draft-crabbe-pce-stateful-pce-mpls-te-00 and complete where<br>
&gt; appropriate / necessary.<br>
&gt;<br>
&gt;<br>
&gt; 4/ Other stateful-PCE based applications will be identified in the<br>
&gt; future. Our suggested procedure will consist on extending the basic<br=
>
&gt; framework document by means of other drafts that complement it and<br>
&gt; build upon the core framework.<br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt; Thank you,<br>
&gt;<br>
&gt; Ramon, on behalf of the stateful-PCErs<br>
&gt;<br>
&gt;<br>
&gt;<br>
<br>
_______________________________________________<br>
Pce mailing list<br>
<a href=3D"mailto:Pce@ietf.org">Pce@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/pce" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/pce</a><br>
</div></div><br>_______________________________________________<br>
Pce mailing list<br>
<a href=3D"mailto:Pce@ietf.org">Pce@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/pce" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/pce</a><br>
<br></blockquote></div><br></div></div></div>

--f46d04462dd23175ec04ccecc5f7--

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From: Fatai Zhang <zhangfatai@huawei.com>
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From: Edward Crabbe <edc@google.com>
Date: Fri, 26 Oct 2012 05:23:27 -0700
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Oscar;

Comments in-line;

        In the case of current Working Group stateful PCE solution
> (draft-ietf-pce-stateful-pce-02), the focus is mainly on the new function=
s
> to be supported: Capability Negotiation,  State Synchronization, LSP Stat=
e
> Report , LSP Control Delegation, LSP Update Request, etc All these set of
> functions are independent whether it is a MPLS-TE or a GMPLS tunnel. Thus=
,
> I don't see why the scope should be limited to MPLS-TE.


Thank you very much for being specific about which draft you are referring
to!  The framework draft, draft-ietf-pce-stateful-pce-02, is obviously NOT
limited to MPLS-TE.  This draft is intended to support extensions for
MPLS-TE, GMPLS and other potential extensions going forward.  This has been
the case from the beginning.  Please see my previous email about the
/framework/ draft supporting MPLS-TE & GMPLS as well as the several off
list discussions we've had regarding same.  An (re)illustration of the
proposed document set relationships is included below:

      applicability draft
              |
              |
     core framework draft
              |
              |
             /|\
        ____/ | \____
       /      |      \
      /       |    RSVP-TE
     /        |
    /         |
 GMPLS        |
              |
        other extensions

note that this is *not* a timeseries. :P



> Would those functions be different in GMPLS and needed separate messages
> and objects, I would agree in separating the solution. For example, in th=
e
> current draft, there are very few objects which are MPLS-TE specific.


That is intentional.  Again, you are referring to the framework draft,
which was intended to support both from the beginning.
AFAIK we are discussing the separate extension drafts.  If we are NOT
discussing the separate extensions draft then we are in violent agreement:
the framework should, and does support both.


> I have gone through the document several times to see the points which
> could be different in GMPLS, and I could not find them (maybe I miss
> something here, so If you think the number of specific MPLS-TE /GMPLS
> objects will be significant, please give the examples). All the new
> messages apply for both MPLS-TE and GMPLS, without the need of any change=
.
>

Yes, this was deliberate.  Please see my previous email in the thread
regarding extension vs framework.




>         For other applications of the stateful PCE, GMPLS and MPLS-TE may
> go in separate documents if there are many differences between them, and
> the documents are cleaner with separate extensions.
>
> "(in fact this is the case for Google; as a company we do not care about
> GMPLS, we /do/ very much care about MPLS-TE.)  "
>
>         Sorry, Ed, but the argument of a specific company position of wha=
t
> cares or not is by no means acceptable. Please, limit the arguments to
> technical and not political.
>


Oh, I agree that the specific google instance has no bearing here;  this
isn't a political argument and is true no matter what company we're talking
about, vendor or customer.  The longer form of the argument is as follows:

If you combine the *extension* drafts, you end up with both features being
glommed together in one spec.  If a specific vendor is in one market or the
other and does not require the full spec, OR a specific customer has need
of only one of the two and is pushing a vendor to implement it, combining
the two into a single draft either adds additional work in unnecessarily
implementing both or potentially increases the difficulty for the
implementor in disentangling the two and claiming RFC compliance.  Having
separate *extension* drafts inherently provides the split that exists the
two markets in reality.

best,

  -ed



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Oscar;=A0<div><br></div><div>Comments in-line;<br><br><div class=3D"gmail_q=
uote"><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-l=
eft:1px #ccc solid;padding-left:1ex">
=A0 =A0 =A0 =A0 In the case of current Working Group stateful PCE solution =
(draft-ietf-pce-stateful-pce-02), the focus is mainly on the new functions =
to be supported: Capability Negotiation, =A0State Synchronization, LSP Stat=
e Report , LSP Control Delegation, LSP Update Request, etc All these set of=
 functions are independent whether it is a MPLS-TE or a GMPLS tunnel. Thus,=
 I don&#39;t see why the scope should be limited to MPLS-TE.</blockquote>



<div><br></div><div>Thank you very much for being specific about which draf=
t you are referring to! =A0The framework draft, draft-ietf-pce-stateful-pce=
-02,=A0is obviously NOT limited to MPLS-TE. =A0This draft is intended to su=
pport extensions for MPLS-TE, GMPLS and other potential extensions going fo=
rward. =A0This has been the case from the beginning. =A0Please see my previ=
ous email about the /framework/ draft supporting MPLS-TE &amp; GMPLS as wel=
l as the several off list discussions we&#39;ve had regarding same. =A0An (=
re)illustration of the proposed document set relationships is included belo=
w:</div>

<div><br></div><div>=A0<span style=3D"font-family:&#39;courier new&#39;,mon=
ospace;background-color:rgb(255,255,255);color:rgb(34,34,34);font-size:13px=
">=A0 =A0 =A0applicability draft =A0 =A0 =A0 =A0</span></div><div style=3D"=
font-size:13px;color:rgb(34,34,34);background-color:rgb(255,255,255)">

<font face=3D"courier new, monospace" style=3D"font-family:arial,sans-serif=
">=A0=A0=A0=A0=A0=A0=A0 =A0=A0 =A0 =A0|=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=A0=
=A0=A0 =A0=A0 =A0 =A0=A0</font><div style=3D"font-family:arial,sans-serif">=
<font face=3D"courier new, monospace">=A0 =A0 =A0 =A0 =A0 =A0 =A0 |<br>=A0 =
=A0 =A0core framework draft =A0 =A0=A0<br>

=A0 =A0 =A0 =A0 =A0 =A0 =A0 |<br>=A0 =A0 =A0 =A0 =A0 =A0 =A0 |<br>=A0 =A0 =
=A0 =A0 =A0 =A0 =A0/|\<br>=A0 =A0 =A0 =A0 ____/ | \____ =A0 =A0 =A0 =A0 =A0=
 =A0 =A0<br>=A0 =A0 =A0 =A0/ =A0 =A0 =A0| =A0 =A0 =A0\<br>=A0 =A0 =A0 / =A0=
 =A0 =A0 | =A0 =A0RSVP-TE =A0 =A0=A0 =A0<br>=A0 =A0 =A0/ =A0 =A0 =A0 =A0|<b=
r>=A0 =A0 / =A0 =A0 =A0 =A0 |<br>=A0GMPLS =A0 =A0 =A0 =A0| =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0 =A0 =A0=A0</font><div>

<font face=3D"courier new, monospace">=A0 =A0 =A0 =A0 =A0 =A0 =A0 |<br>=A0 =
=A0 =A0 =A0 other extensions=A0</font></div></div><div style=3D"font-family=
:arial,sans-serif"><font face=3D"courier new, monospace"><br></font></div><=
div><font face=3D"arial, helvetica, sans-serif">note that this is *not* a t=
imeseries. :P</font></div>

<div><font face=3D"arial, helvetica, sans-serif"><br></font></div></div>

<div>=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex"> Would those functions be diff=
erent in GMPLS and needed separate messages and objects, I would agree in s=
eparating the solution. For example, in the current draft, there are very f=
ew objects which are MPLS-TE specific.</blockquote>



<div><br></div><div>That is intentional. =A0Again, you are referring to the=
 framework draft, which was intended to support both from the beginning. =
=A0</div><div>AFAIK we are discussing the separate extension drafts. =A0If =
we are NOT discussing the separate extensions draft then we are in violent =
agreement: the framework should, and does support both. =A0</div>



<div>=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex"> I have gone through the docum=
ent several times to see the points which could be different in GMPLS, and =
I could not find them (maybe I miss something here, so If you think the num=
ber of specific MPLS-TE /GMPLS objects will be significant, please give the=
 examples). All the new messages apply for both MPLS-TE and GMPLS, without =
the need of any change.<br>



</blockquote><div><br></div><div>Yes, this was deliberate. =A0Please see my=
 previous email in the thread regarding extension vs framework.</div><div><=
br></div><div><div style=3D"color:rgb(34,34,34);font-family:arial,sans-seri=
f;font-size:13px;background-color:rgb(255,255,255)">

<span style=3D"font-family:&#39;courier new&#39;,monospace">=A0</span></div=
></div><div><br>
</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-l=
eft:1px #ccc solid;padding-left:1ex">

<br>
=A0 =A0 =A0 =A0 For other applications of the stateful PCE, GMPLS and MPLS-=
TE may go in separate documents if there are many differences between them,=
 and the documents are cleaner with separate extensions.<br>
<div><br>
&quot;(in fact this is the case for Google; as a company we do not care abo=
ut GMPLS, we /do/ very much care about MPLS-TE.) =A0&quot;<br>
<br>
</div>=A0 =A0 =A0 =A0 Sorry, Ed, but the argument of a specific company pos=
ition of what cares or not is by no means acceptable. Please, limit the arg=
uments to technical and not political.<br></blockquote><div><br></div><div>=
<br>



</div><div>Oh, I agree that the specific google instance has no bearing her=
e; =A0this isn&#39;t a political argument and is true no matter what compan=
y we&#39;re talking about, vendor or customer. =A0The longer form of the ar=
gument is as follows:=A0</div>



<div><br></div><div>If you combine the *extension* drafts, you end up with =
both features being glommed together in one spec. =A0If a specific vendor i=
s in one market or the other and does not require the full spec, OR a speci=
fic customer has need of only one of the two and is pushing a vendor to imp=
lement it, combining the two into a single draft either adds=A0additional=
=A0work in=A0unnecessarily implementing both or=A0potentially increases the=
 difficulty for the implementor in disentangling the two and claiming RFC c=
ompliance. =A0Having separate *extension* drafts inherently provides the sp=
lit that exists the two markets in reality. =A0</div>



<div><br></div><div>best,</div><div><br></div><div>=A0 -ed</div><div><br></=
div><div><br></div><div><br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
________________________________<br>
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This message is intended exclusively for its addressee. We only send and re=
ceive email on the basis of the terms set out at:<br>
<a href=3D"http://www.tid.es/ES/PAGINAS/disclaimer.aspx" target=3D"_blank">=
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</div></div></blockquote></div><br></div>

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From adrian@olddog.co.uk  Sat Oct 27 08:19:43 2012
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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'Edward Crabbe'" <edc@google.com>, =?gb2312?B?J09zY2FyIEdvbnqoomxleiBkZSBEaW9zJw==?= <ogondio@tid.es>
References: <F82A4B6D50F9464B8EBA55651F541CF82CCD0895@SZXEML520-MBS.china.huawei.com>	<ACC8AB2D98C05F4E9FBDA092017D97FC15077E18@xmb-aln-x10.cisco.com>	<7CFF94B047D8864CB6268315034E35DE05530CE5@EX10-MB2-MAD.hi.inet> <CACKN6JEiCnx4oxwf8E3c0xJEizCJ3xs-3S-nPjQMFHwMZj+Xgw@mail.gmail.com>
In-Reply-To: <CACKN6JEiCnx4oxwf8E3c0xJEizCJ3xs-3S-nPjQMFHwMZj+Xgw@mail.gmail.com>
Date: Sat, 27 Oct 2012 16:19:26 +0100
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Hello,
=20
Speaking as an individual contributor...
=20
I like Ed's picture, but I would offer an insert *if* it is possible. =
Maybe
there is a generic extensions document to be broken out and inserted in =
the
picture below "core framework draft" and before the fork into the =
various
targeted extensions drafts.
=20
This might be over-cooking the problem because the generic could be =
included in
the first targeted extensions draft, and those could make reference. =
However,
consider poor old Ed having to point at a GMPLS-specific document in =
order to
tell his MPLS-TE vendor what to implement.
=20
I appreciate that it is not always possible to consider the generic when =
there
is only one specific use case. But here we know that there are two in =
the pipe
so we can at least give some thought to it.=20
=20
A
=20
=20
From: pce-bounces@ietf.org [mailto:pce-bounces@ietf.org] On Behalf Of =
Edward
Crabbe
Sent: 26 October 2012 13:23
To: Oscar Gonz=A8=A2lez de Dios
Cc: pce@ietf.org
Subject: Re: [Pce] =B4=F0=B8=B4: stateful PCE - moving forward & next =
steps
=20
Oscar;=20
=20
Comments in-line;
        In the case of current Working Group stateful PCE solution
(draft-ietf-pce-stateful-pce-02), the focus is mainly on the new =
functions to be
supported: Capability Negotiation,  State Synchronization, LSP State =
Report ,
LSP Control Delegation, LSP Update Request, etc All these set of =
functions are
independent whether it is a MPLS-TE or a GMPLS tunnel. Thus, I don't see =
why the
scope should be limited to MPLS-TE.
=20
Thank you very much for being specific about which draft you are =
referring to!
The framework draft, draft-ietf-pce-stateful-pce-02, is obviously NOT =
limited to
MPLS-TE.  This draft is intended to support extensions for MPLS-TE, =
GMPLS and
other potential extensions going forward.  This has been the case from =
the
beginning.  Please see my previous email about the /framework/ draft =
supporting
MPLS-TE & GMPLS as well as the several off list discussions we've had =
regarding
same.  An (re)illustration of the proposed document set relationships is
included below:
=20
      applicability draft       =20
                            |                         =20
              |
     core framework draft    =20
              |
              |
             /|\
        ____/ | \____             =20
       /      |      \
      /       |    RSVP-TE      =20
     /        |
    /         |
 GMPLS        |                    =20
              |
        other extensions=20
=20
note that this is *not* a timeseries. :P
=20
=20
Would those functions be different in GMPLS and needed separate messages =
and
objects, I would agree in separating the solution. For example, in the =
current
draft, there are very few objects which are MPLS-TE specific.
=20
That is intentional.  Again, you are referring to the framework draft, =
which was
intended to support both from the beginning. =20
AFAIK we are discussing the separate extension drafts.  If we are NOT =
discussing
the separate extensions draft then we are in violent agreement: the =
framework
should, and does support both. =20
=20
I have gone through the document several times to see the points which =
could be
different in GMPLS, and I could not find them (maybe I miss something =
here, so
If you think the number of specific MPLS-TE /GMPLS objects will be =
significant,
please give the examples). All the new messages apply for both MPLS-TE =
and
GMPLS, without the need of any change.
=20
Yes, this was deliberate.  Please see my previous email in the thread =
regarding
extension vs framework.
=20
=20
=20

        For other applications of the stateful PCE, GMPLS and MPLS-TE =
may go in
separate documents if there are many differences between them, and the =
documents
are cleaner with separate extensions.

"(in fact this is the case for Google; as a company we do not care about =
GMPLS,
we /do/ very much care about MPLS-TE.)  "
        Sorry, Ed, but the argument of a specific company position of =
what cares
or not is by no means acceptable. Please, limit the arguments to =
technical and
not political.
=20
=20
Oh, I agree that the specific google instance has no bearing here;  this =
isn't a
political argument and is true no matter what company we're talking =
about,
vendor or customer.  The longer form of the argument is as follows:=20
=20
If you combine the *extension* drafts, you end up with both features =
being
glommed together in one spec.  If a specific vendor is in one market or =
the
other and does not require the full spec, OR a specific customer has =
need of
only one of the two and is pushing a vendor to implement it, combining =
the two
into a single draft either adds additional work in unnecessarily =
implementing
both or potentially increases the difficulty for the implementor in
disentangling the two and claiming RFC compliance.  Having separate =
*extension*
drafts inherently provides the split that exists the two markets in =
reality. =20
=20
best,
=20
  -ed
=20
=20
=20
________________________________

Este mensaje se dirige exclusivamente a su destinatario. Puede consultar =
nuestra
pol=A8=AAtica de env=A8=AAo y recepci=A8=AEn de correo electr=A8=AEnico =
en el enlace situado m=A8=A2
s abajo.
This message is intended exclusively for its addressee. We only send and =
receive
email on the basis of the terms set out at:
http://www.tid.es/ES/PAGINAS/disclaimer.aspx
_______________________________________________
Pce mailing list
Pce@ietf.org
https://www.ietf.org/mailman/listinfo/pce
=20

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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-GB link=3Dblue =
vlink=3Dpurple style=3D'tab-interval:36.0pt'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Hello,<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>Speaking as an individual =
contributor...<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>I like Ed's picture, but I =
would offer an insert *if* it is possible. Maybe there is a generic =
extensions document to be broken out and inserted in the picture below =
&quot;core framework draft&quot; and before the fork into the various =
targeted extensions drafts.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>This might be over-cooking the =
problem because the generic could be included in the first targeted =
extensions draft, and those could make reference. However, consider poor =
old Ed having to point at a GMPLS-specific document in order to tell his =
MPLS-TE vendor what to implement.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>I appreciate that it is not =
always possible to consider the generic when there is only one specific =
use case. But here we know that there are two in the pipe so we can at =
least give some thought to it. <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'>A<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-fon=
t-family:"Times New =
Roman";color:#1F497D'><o:p>&nbsp;</o:p></span></p><div =
style=3D'border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt'><div><div style=3D'border:none;border-top:solid #B5C4DF =
1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New =
Roman";mso-ansi-language:EN-US'>From:</span></b><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New Roman";mso-ansi-language:EN-US'> =
pce-bounces@ietf.org [mailto:pce-bounces@ietf.org] <b>On Behalf Of =
</b>Edward Crabbe<br><b>Sent:</b> 26 October 2012 13:23<br><b>To:</b> =
Oscar Gonz=A8=A2lez de Dios<br><b>Cc:</b> =
pce@ietf.org<br><b>Subject:</b> Re: [Pce] </span><span =
style=3D'font-size:10.0pt;font-family:"MS UI =
Gothic","sans-serif";mso-bidi-font-family:"MS UI =
Gothic";mso-ansi-language:EN-US'>=B4=F0=B8=B4</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-f=
ont-family:"Times New Roman";mso-ansi-language:EN-US'>: stateful PCE - =
moving forward &amp; next steps<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Oscar;&nbsp;<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>Comments =
in-line;<o:p></o:p></p><div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC =
1.0pt;mso-border-left-alt:solid #CCCCCC .75pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><p class=3DMsoNormal>&nbsp; =
&nbsp; &nbsp; &nbsp; In the case of current Working Group stateful PCE =
solution (draft-ietf-pce-stateful-pce-02), the focus is mainly on the =
new functions to be supported: Capability Negotiation, &nbsp;State =
Synchronization, LSP State Report , LSP Control Delegation, LSP Update =
Request, etc All these set of functions are independent whether it is a =
MPLS-TE or a GMPLS tunnel. Thus, I don't see why the scope should be =
limited to MPLS-TE.<o:p></o:p></p></blockquote><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Thank you very much for being specific about which =
draft you are referring to! &nbsp;The framework draft, =
draft-ietf-pce-stateful-pce-02,&nbsp;is obviously NOT limited to =
MPLS-TE. &nbsp;This draft is intended to support extensions for MPLS-TE, =
GMPLS and other potential extensions going forward. &nbsp;This has been =
the case from the beginning. &nbsp;Please see my previous email about =
the /framework/ draft supporting MPLS-TE &amp; GMPLS as well as the =
several off list discussions we've had regarding same. &nbsp;An =
(re)illustration of the proposed document set relationships is included =
below:<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>&nbsp;<span =
style=3D'font-size:10.0pt;font-family:"Courier =
New";color:#222222;background:white'>&nbsp; &nbsp; &nbsp;applicability =
draft &nbsp; &nbsp; &nbsp; &nbsp;</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#222222'=
>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'=
><span =
style=3D'mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#222222'=
>&nbsp;&nbsp; &nbsp; &nbsp;|&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; &nbsp; =
&nbsp;&nbsp;</span><span =
style=3D'font-size:10.0pt;color:#222222'><o:p></o:p></span></p><div><p =
class=3DMsoNormal style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Courier =
New";color:#222222'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
|<br>&nbsp; &nbsp; &nbsp;core framework draft &nbsp; =
&nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
|<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; |<br>&nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;/|\<br>&nbsp; &nbsp; &nbsp; &nbsp; =
____/ | \____ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br>&nbsp; =
&nbsp; &nbsp; &nbsp;/ &nbsp; &nbsp; &nbsp;| &nbsp; &nbsp; =
&nbsp;\<br>&nbsp; &nbsp; &nbsp; / &nbsp; &nbsp; &nbsp; | &nbsp; =
&nbsp;RSVP-TE &nbsp; &nbsp;&nbsp; &nbsp;<br>&nbsp; &nbsp; &nbsp;/ &nbsp; =
&nbsp; &nbsp; &nbsp;|<br>&nbsp; &nbsp; / &nbsp; &nbsp; &nbsp; &nbsp; =
|<br>&nbsp;GMPLS &nbsp; &nbsp; &nbsp; &nbsp;| &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#222222'=
><o:p></o:p></span></p><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Courier =
New";color:#222222'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
|<br>&nbsp; &nbsp; &nbsp; &nbsp; other extensions&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#222222'=
><o:p></o:p></span></p></div></div><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#222222'=
><o:p>&nbsp;</o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#222222'=
>note that this is *not* a timeseries. :P</span><span =
style=3D'font-size:10.0pt;color:#222222'><o:p></o:p></span></p></div><div=
><p class=3DMsoNormal style=3D'background:white'><span =
style=3D'font-size:10.0pt;color:#222222'><o:p>&nbsp;</o:p></span></p></di=
v></div><div><p class=3DMsoNormal>&nbsp;<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC =
1.0pt;mso-border-left-alt:solid #CCCCCC .75pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><p class=3DMsoNormal>Would =
those functions be different in GMPLS and needed separate messages and =
objects, I would agree in separating the solution. For example, in the =
current draft, there are very few objects which are MPLS-TE =
specific.<o:p></o:p></p></blockquote><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>That is intentional. &nbsp;Again, you are referring to =
the framework draft, which was intended to support both from the =
beginning. &nbsp;<o:p></o:p></p></div><div><p class=3DMsoNormal>AFAIK we =
are discussing the separate extension drafts. &nbsp;If we are NOT =
discussing the separate extensions draft then we are in violent =
agreement: the framework should, and does support both. =
&nbsp;<o:p></o:p></p></div><div><p =
class=3DMsoNormal>&nbsp;<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC =
1.0pt;mso-border-left-alt:solid #CCCCCC .75pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><p class=3DMsoNormal>I have =
gone through the document several times to see the points which could be =
different in GMPLS, and I could not find them (maybe I miss something =
here, so If you think the number of specific MPLS-TE /GMPLS objects will =
be significant, please give the examples). All the new messages apply =
for both MPLS-TE and GMPLS, without the need of any =
change.<o:p></o:p></p></blockquote><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Yes, this was deliberate. &nbsp;Please see my previous =
email in the thread regarding extension vs =
framework.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><div><p =
class=3DMsoNormal style=3D'background:white'><span =
style=3D'font-size:10.0pt;font-family:"Courier =
New";color:#222222'>&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:#222222'=
><o:p></o:p></span></p></div></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC =
1.0pt;mso-border-left-alt:solid #CCCCCC .75pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><p =
class=3DMsoNormal><br>&nbsp; &nbsp; &nbsp; &nbsp; For other applications =
of the stateful PCE, GMPLS and MPLS-TE may go in separate documents if =
there are many differences between them, and the documents are cleaner =
with separate extensions.<o:p></o:p></p><div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><br>&quot;(in fact this is the case for =
Google; as a company we do not care about GMPLS, we /do/ very much care =
about MPLS-TE.) &nbsp;&quot;<o:p></o:p></p></div><p =
class=3DMsoNormal>&nbsp; &nbsp; &nbsp; &nbsp; Sorry, Ed, but the =
argument of a specific company position of what cares or not is by no =
means acceptable. Please, limit the arguments to technical and not =
political.<o:p></o:p></p></blockquote><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Oh, I agree that the specific google instance has no =
bearing here; &nbsp;this isn't a political argument and is true no =
matter what company we're talking about, vendor or customer. &nbsp;The =
longer form of the argument is as =
follows:&nbsp;<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>If you combine the *extension* drafts, you end up with =
both features being glommed together in one spec. &nbsp;If a specific =
vendor is in one market or the other and does not require the full spec, =
OR a specific customer has need of only one of the two and is pushing a =
vendor to implement it, combining the two into a single draft either =
adds&nbsp;additional&nbsp;work in&nbsp;unnecessarily implementing both =
or&nbsp;potentially increases the difficulty for the implementor in =
disentangling the two and claiming RFC compliance. &nbsp;Having separate =
*extension* drafts inherently provides the split that exists the two =
markets in reality. &nbsp;<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>best,<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>&nbsp; -ed<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC =
1.0pt;mso-border-left-alt:solid #CCCCCC .75pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><p =
class=3DMsoNormal>________________________________<br><br>Este mensaje =
se dirige exclusivamente a su destinatario. Puede consultar nuestra =
pol=A8=AAtica de env=A8=AAo y recepci=A8=AEn de correo electr=A8=AEnico =
en el enlace situado m=A8=A2s abajo.<br>This message is intended =
exclusively for its addressee. We only send and receive email on the =
basis of the terms set out at:<br><a =
href=3D"http://www.tid.es/ES/PAGINAS/disclaimer.aspx" =
target=3D"_blank">http://www.tid.es/ES/PAGINAS/disclaimer.aspx</a><o:p></=
o:p></p><div><div><p =
class=3DMsoNormal>_______________________________________________<br>Pce =
mailing list<br><a href=3D"mailto:Pce@ietf.org" =
target=3D"_blank">Pce@ietf.org</a><br><a =
href=3D"https://www.ietf.org/mailman/listinfo/pce" =
target=3D"_blank">https://www.ietf.org/mailman/listinfo/pce</a><o:p></o:p=
></p></div></div></blockquote></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></div></div></body></html>
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From: RFC Errata System <rfc-editor@rfc-editor.org>
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Date: Tue, 30 Oct 2012 06:42:14 -0700 (PDT)
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Cc: rfc-editor@rfc-editor.org, pce@ietf.org, dana.kutenicsova@pantheon.sk
Subject: [Pce] [Technical Errata Reported] RFC5455 (3396)
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The following errata report has been submitted for RFC5455,
"Diffserv-Aware Class-Type Object for the Path Computation Element Communication Protocol".

--------------------------------------
You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=5455&eid=3396

--------------------------------------
Type: Technical
Reported by: Dana Kutenicsova <dana.kutenicsova@pantheon.sk>

Section: 3.2

Original Text
-------------
<request>::= <RP>
             <END-POINTS>
             [<CLASSTYPE>]
             [<LSPA>]
             [<BANDWIDTH>]
             [<metric-list>]
             [<RRO>]
             [<IRO>]
             [<LOAD-BALANCING>]

Corrected Text
--------------
<request>::= <RP>
             <END-POINTS>
             [<CLASSTYPE>]
             [<LSPA>]
             [<BANDWIDTH>]
             [<metric-list>]
             [<RRO>[<BANDWIDTH>]]
             [<IRO>]
             [<LOAD-BALANCING>] 

Notes
-----
Reoptimization BANDWIDTH object was allowed to appear as BANDWIDTH to RRO in PCReq message in draft-ietfd-pce-pcep-10, which became RFC5440. This change was never reflected in the history of RFC5455.

Instructions:
-------------
This errata is currently posted as "Reported". If necessary, please
use "Reply All" to discuss whether it should be verified or
rejected. When a decision is reached, the verifying party (IESG)
can log in to change the status and edit the report, if necessary. 

--------------------------------------
RFC5455 (draft-ietf-pce-dste-02)
--------------------------------------
Title               : Diffserv-Aware Class-Type Object for the Path Computation Element Communication Protocol
Publication Date    : March 2009
Author(s)           : S. Sivabalan, Ed., J. Parker, S. Boutros, K. Kumaki
Category            : PROPOSED STANDARD
Source              : Path Computation Element
Area                : Routing
Stream              : IETF
Verifying Party     : IESG

From julien.meuric@orange.com  Wed Oct 31 02:41:02 2012
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Date: Wed, 31 Oct 2012 10:40:57 +0100
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Subject: [Pce] PCE Meeting in Atlanta
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Hi PCE'rs.

You may have noticed that a draft agenda for our meeting during IETF 85 
is online: https://datatracker.ietf.org/meeting/85/agenda/pce/

Any comments should be sent to the chairs. Presenters are requested to 
send their slides by Sunday 4th.

Thanks,

JP & Julien

