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Subject: [sfc] CFP - 3rd IEEE Workshop on Orchestration for Software-Defined Infrastructures (O4SDI)
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Please accept our apologies if you receive multiple copies of this CFP

************************************************************************

                          3rd IEEE Workshop on
       Orchestration for Software-Defined Infrastructures (O4SDI)
http://o4sdi.unibo.it/o4sdi3

       To be held in conjunction with the 2017 IEEE Conference on
     Network Function Virtualization and Software Defined Networks
                          (IEEE NFV-SDN 2017)
                  6th November 2017 // Berlin, Germany

************************************************************************

The  current  industry  trend   of  convergence  between  computing  and
networking  eco-systems  clearly  shows   that  software  will  play  an
unprecedented    dominant   role    also    in   future    communication
environments. Computing, storage, and  connectivity services, as well as
any other present and future  application instances, will be deployed in
the form of virtualized  assets within a software-defined infrastructure
running on top of general-purpose processing and communication hardware,
all  managed  and  made  available   under  the  cloud  “As  A  Service”
paradigm.  This  technological  convergence and  infrastructure  sharing
between the computing and communication  systems portend a scenario with
a  “fog”  of  micro-clouds  composed of  generalized  virtual  functions
providing both  applications and network services  that supplement those
deployed in traditional cloud datacenters.

The   Third  IEEE   Workshop  on   Orchestration  for   Software-Defined
Infrastructures (O4SDI)  addresses the  challenges that  will facilitate
orchestration and  programmability of  generalized virtual  functions in
Software  Defined  Infrastructures  (SDI), enabling  cloud  and  network
providers  to  deploy  integrated  services  across  different  resource
domains. Orchestration  mechanisms will  facilitate the  live deployment
and lifecycle management  of these virtual elements,  at the application
level, the  server level, and the  network level within a  single domain
and across multiple  domains. Without such orchestration it  will not be
possible  to   enable  dynamic  establishment  of   generalized  virtual
functions chains, according to service requirements.

These  challenges  of  orchestration   are  many-fold,  with  many  open
questions that need to be addressed in the areas of:

●  network   "softwarization"  which  requires  unified   management  of
   computing,  storage,   and  network   resources  for   the  effective
   deployment,  lifecycle  management,  and  run-time  configuration  of
   generalized virtual functions;

●  abstraction models  and open standard interfaces,  needed for assuring
   vendor interoperability;

●  adaptation and  optimization mechanisms,  which must  be enforced  at
   global and/or  local level for  coping with user  demand, application
   requirements, resource unavailability, etc.

O4SDI  aims at  providing  an international  forum  for researchers  and
practitioners from  academia, industry,  network operators,  and service
providers  to discuss  and  address the  challenges  deriving from  such
emerging scenario where  systems, processes, and workflows  used in both
computing  and  communications  domains  are  converging.  The  workshop
welcomes contributions from both computing and network-oriented research
communities,    with    the     aim    of    facilitating    discussion,
cross-fertilization   and  exchange   of   ideas   and  practices,   and
successfully promote innovative solutions toward a real programmatic use
of  software-defined  infrastructures  as a  whole.  Contributions  that
discuss lessons learnt and best practices, describe practical deployment
and implementation experiences, and demonstrate innovative use-cases are
especially encouraged for presentation and publication.

We are particularly interested in papers that cover, but are not limited
to, the following topics:

●  single domain and cross domain orchestration issues
●  integrated network and computing resource control and management
●  control and abstraction of heterogeneous networks
●  orchestration in SDN/NFV
●  run-time orchestration
●  orchestration for next-generation IP and optical networks
●  orchestration in 5G networks
●  QoS/QoE in software-defined infrastructures
●  orchestration for high-availability and resilience in
   software-defined infrastructures
●  intent-based orchestration
●  orchestration for fog computing and networking
●  dynamic service composition and delivery
●  network programmability for service chaining
●  orchestration of network slices and data center slices
●  software engineering and operating systems techniques applied
   to orchestration
●  description, specification, and abstraction languages for
   orchestration
●  optimal orchestration algorithms
●  context-aware orchestration
●  functional architectures of orchestrating elements
●  testbed experiments on orchestrations
●  performance evaluation of orchestration elements
●  standardization issues in orchestration
●  best practices in orchestration

Important Dates

- Workshop Paper Submission: July 9, 2017
- Notification of Acceptance: August 28, 2017
- Camera-ready Submission: September 15, 2017

Paper submissions will be handled on-line through the EDAS system.

Prospective  authors  are  invited   to  submit  high-quality,  original
technical papers for presentation at the workshop and publication in the
O4SDI Proceedings  and IEEE Xplore.  Papers must be written  in English,
unpublished and not  submitted elsewhere. Full papers  must be formatted
as  the  standard  IEEE  double-column conference  template.  All  final
submissions should have a maximum paper  length of six (6) printed pages
(10-point font),  including figures,  without incurring  additional page
charges.


Workshop Co-Chairs

- Stuart Clayman, University College London, UK - s.clayman@ucl.ac.uk 
<mailto:s.clayman@ucl.ac.uk>
- Walter Cerroni, University of Bologna, Italy - walter.cerroni@unibo.it 
<mailto:walter.cerroni@unibo.it>
- Barbara Martini, CNIT, Pisa, Italy - barbara.martini@cnit.it 
<mailto:barbara.martini@cnit.it>
- Federica Paganelli, CNIT, Firenze, Italy - federica.paganelli@cnit.it 
<mailto:federica.paganelli@cnit.it>


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    <p>Please accept our apologies if you receive multiple copies of
      this CFP
      <br>
      <br>
    </p>
    <p>************************************************************************<br
        class="">
      <br class="">
                               3rd IEEE Workshop on<br class="">
            Orchestration for Software-Defined Infrastructures (O4SDI)<br
        class="">
                           <a href="http://o4sdi.unibo.it/o4sdi3"
        class="">http://o4sdi.unibo.it/o4sdi3</a><br class="">
      <br class="">
            To be held in conjunction with the 2017 IEEE Conference on<br
        class="">
          Network Function Virtualization and Software Defined Networks<br
        class="">
                               (IEEE NFV-SDN 2017)<br class="">
                       6th November 2017 // Berlin, Germany<br class="">
      <br class="">
************************************************************************<br
        class="">
      <br class="">
      The  current  industry  trend   of  convergence  between
       computing  and<br class="">
      networking  eco-systems  clearly  shows   that  software  will
       play  an<br class="">
      unprecedented    dominant   role    also    in   future
         communication<br class="">
      environments. Computing, storage, and  connectivity services, as
      well as<br class="">
      any other present and future  application instances, will be
      deployed in<br class="">
      the form of virtualized  assets within a software-defined
      infrastructure<br class="">
      running on top of general-purpose processing and communication
      hardware,<br class="">
      all  managed  and  made  available   under  the  cloud  “As  A
       Service”<br class="">
      paradigm.  This  technological  convergence and  infrastructure
       sharing<br class="">
      between the computing and communication  systems portend a
      scenario with<br class="">
      a  “fog”  of  micro-clouds  composed of  generalized  virtual
       functions<br class="">
      providing both  applications and network services  that supplement
      those<br class="">
      deployed in traditional cloud datacenters.<br class="">
      <br class="">
      The   Third  IEEE   Workshop  on   Orchestration  for
        Software-Defined<br class="">
      Infrastructures (O4SDI)  addresses the  challenges that  will
      facilitate<br class="">
      orchestration and  programmability of  generalized virtual
       functions in<br class="">
      Software  Defined  Infrastructures  (SDI), enabling  cloud  and
       network<br class="">
      providers  to  deploy  integrated  services  across  different
       resource<br class="">
      domains. Orchestration  mechanisms will  facilitate the  live
      deployment<br class="">
      and lifecycle management  of these virtual elements,  at the
      application<br class="">
      level, the  server level, and the  network level within a  single
      domain<br class="">
      and across multiple  domains. Without such orchestration it  will
      not be<br class="">
      possible  to   enable  dynamic  establishment  of   generalized
       virtual<br class="">
      functions chains, according to service requirements.<br class="">
      <br class="">
      These  challenges  of  orchestration   are  many-fold,  with  many
       open<br class="">
      questions that need to be addressed in the areas of:<br class="">
      <br class="">
      ●  network   "softwarization"  which  requires  unified
        management  of<br class="">
        computing,  storage,   and  network   resources  for   the
       effective<br class="">
        deployment,  lifecycle  management,  and  run-time
       configuration  of<br class="">
        generalized virtual functions;<br class="">
      <br class="">
      ●  abstraction models  and open standard interfaces,  needed for
      assuring<br class="">
        vendor interoperability;<br class="">
      <br class="">
      ●  adaptation and  optimization mechanisms,  which must  be
      enforced  at<br class="">
        global and/or  local level for  coping with user  demand,
      application<br class="">
        requirements, resource unavailability, etc.<br class="">
      <br class="">
      O4SDI  aims at  providing  an international  forum  for
      researchers  and<br class="">
      practitioners from  academia, industry,  network operators,  and
      service<br class="">
      providers  to discuss  and  address the  challenges  deriving from
       such<br class="">
      emerging scenario where  systems, processes, and workflows  used
      in both<br class="">
      computing  and  communications  domains  are  converging.  The
       workshop<br class="">
      welcomes contributions from both computing and network-oriented
      research<br class="">
      communities,    with    the     aim    of    facilitating
         discussion,<br class="">
      cross-fertilization   and  exchange   of   ideas   and  practices,
        and<br class="">
      successfully promote innovative solutions toward a real
      programmatic use<br class="">
      of  software-defined  infrastructures  as a  whole.  Contributions
       that<br class="">
      discuss lessons learnt and best practices, describe practical
      deployment<br class="">
      and implementation experiences, and demonstrate innovative
      use-cases are<br class="">
      especially encouraged for presentation and publication.<br
        class="">
      <br class="">
      We are particularly interested in papers that cover, but are not
      limited<br class="">
      to, the following topics:<br class="">
      <br class="">
      ●  single domain and cross domain orchestration issues<br class="">
      ●  integrated network and computing resource control and
      management<br class="">
      ●  control and abstraction of heterogeneous networks<br class="">
      ●  orchestration in SDN/NFV<br class="">
      ●  run-time orchestration<br class="">
      ●  orchestration for next-generation IP and optical networks<br
        class="">
      ●  orchestration in 5G networks<br class="">
      ●  QoS/QoE in software-defined infrastructures<br class="">
      ●  orchestration for high-availability and resilience in<br
        class="">
        software-defined infrastructures<br class="">
      ●  intent-based orchestration<br class="">
      ●  orchestration for fog computing and networking<br class="">
      ●  dynamic service composition and delivery<br class="">
      ●  network programmability for service chaining<br class="">
      ●  orchestration of network slices and data center slices <br
        class="">
      ●  software engineering and operating systems techniques applied<br
        class="">
        to orchestration<br class="">
      ●  description, specification, and abstraction languages for<br
        class="">
        orchestration<br class="">
      ●  optimal orchestration algorithms<br class="">
      ●  context-aware orchestration<br class="">
      ●  functional architectures of orchestrating elements<br class="">
      ●  testbed experiments on orchestrations<br class="">
      ●  performance evaluation of orchestration elements<br class="">
      ●  standardization issues in orchestration <br class="">
      ●  best practices in orchestration<br class="">
      <br class="">
      Important Dates<br class="">
      <br class="">
      - Workshop Paper Submission: July 9, 2017 <br class="">
      - Notification of Acceptance: August 28, 2017<br class="">
      - Camera-ready Submission: September 15, 2017<br class="">
      <br class="">
      Paper submissions will be handled on-line through the EDAS system.<br
        class="">
      <br class="">
      Prospective  authors  are  invited   to  submit  high-quality,
       original<br class="">
      technical papers for presentation at the workshop and publication
      in the<br class="">
      O4SDI Proceedings  and IEEE Xplore.  Papers must be written  in
      English,<br class="">
      unpublished and not  submitted elsewhere. Full papers  must be
      formatted<br class="">
      as  the  standard  IEEE  double-column conference  template.  All
       final<br class="">
      submissions should have a maximum paper  length of six (6) printed
      pages<br class="">
      (10-point font),  including figures,  without incurring
       additional page<br class="">
      charges.<br class="">
      <br class="">
      <br class="">
      Workshop Co-Chairs <br class="">
      <br class="">
      - Stuart Clayman, University College London, UK - <a
        href="mailto:s.clayman@ucl.ac.uk" class="">s.clayman@ucl.ac.uk</a>  <br
        class="">
      - Walter Cerroni, University of Bologna, Italy - <a
        href="mailto:walter.cerroni@unibo.it" class="">walter.cerroni@unibo.it</a>  <br
        class="">
      - Barbara Martini, CNIT, Pisa, Italy - <a
        href="mailto:barbara.martini@cnit.it" class="">barbara.martini@cnit.it</a>  <br
        class="">
      - Federica Paganelli, CNIT, Firenze, Italy - <a
        href="mailto:federica.paganelli@cnit.it" class="">federica.paganelli@cnit.it</a></p>
  </body>
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--------------B4408EC278450428F6B27D06--


From nobody Wed Jun 14 07:42:34 2017
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Wed, 14 Jun 2017 07:42:28 -0700
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--001a11c17ca4bf07f00551ec8f59
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Dear All,
we've updated our document. It now includes SFC Source TLV and request to
allocate UDP port number for SFC Echo Reply.
Appreciate your reviews, comments and suggestions.

Regards,
Greg

---------- Forwarded message ----------
From: <internet-drafts@ietf.org>
Date: Wed, Jun 14, 2017 at 7:39 AM
Subject: New Version Notification for draft-wang-sfc-multi-layer-oam-09.txt
To: Bhumip Khasnabish <bhumip.khasnabish@ztetx.com>, Gregory Mirsky <
gregimirsky@gmail.com>, Wei Meng <meng.wei2@zte.com.cn>, "Cui(Linda) Wang" <
lindawangjoy@gmail.com>



A new version of I-D, draft-wang-sfc-multi-layer-oam-09.txt
has been successfully submitted by Greg Mirsky and posted to the
IETF repository.

Name:           draft-wang-sfc-multi-layer-oam
Revision:       09
Title:          Multi-Layer OAM for Service Function Chains in Networks
Document date:  2017-06-14
Group:          Individual Submission
Pages:          10
URL:            https://www.ietf.org/internet-drafts/draft-wang-sfc-multi-
layer-oam-09.txt
Status:         https://datatracker.ietf.org/doc/draft-wang-sfc-multi-
layer-oam/
Htmlized:       https://tools.ietf.org/html/draft-wang-sfc-multi-layer-
oam-09
Htmlized:       https://datatracker.ietf.org/doc/html/draft-wang-sfc-multi-
layer-oam-09
Diff:           https://www.ietf.org/rfcdiff?url2=draft-wang-sfc-multi-
layer-oam-09

Abstract:
   A multi-layer approach to the task of Operation, Administration and
   Maintenance (OAM) of Service Function Chains (SFCs) in networks is
   presented.  Based on the SFC OAM requirements, a multi-layer model is
   introduced.  A mechanism to detect and localize defects using the
   multi-layer model is also described.




Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat

--001a11c17ca4bf07f00551ec8f59
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Dear All,<div>we&#39;ve updated our document. It now inclu=
des SFC Source TLV and request to allocate UDP port number for SFC Echo Rep=
ly.=C2=A0</div><div>Appreciate your reviews, comments and suggestions.</div=
><div><br></div><div>Regards,</div><div>Greg</div><div><br></div><div><div =
class=3D"gmail_quote">---------- Forwarded message ----------<br>From: <b c=
lass=3D"gmail_sendername"></b> <span dir=3D"ltr">&lt;<a href=3D"mailto:inte=
rnet-drafts@ietf.org">internet-drafts@ietf.org</a>&gt;</span><br>Date: Wed,=
 Jun 14, 2017 at 7:39 AM<br>Subject: New Version Notification for draft-wan=
g-sfc-multi-layer-oam-09.txt<br>To: Bhumip Khasnabish &lt;<a href=3D"mailto=
:bhumip.khasnabish@ztetx.com">bhumip.khasnabish@ztetx.com</a>&gt;, Gregory =
Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com">gregimirsky@gmail.com</=
a>&gt;, Wei Meng &lt;<a href=3D"mailto:meng.wei2@zte.com.cn">meng.wei2@zte.=
com.cn</a>&gt;, &quot;Cui(Linda) Wang&quot; &lt;<a href=3D"mailto:lindawang=
joy@gmail.com">lindawangjoy@gmail.com</a>&gt;<br><br><br><br>
A new version of I-D, draft-wang-sfc-multi-layer-<wbr>oam-09.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-wang-sfc-multi-layer-oa=
m<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A009<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Multi-Layer OAM for Service Functi=
on Chains in Networks<br>
Document date:=C2=A0 2017-06-14<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Individual Submission<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 10<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-wang-sfc-multi-layer-oam-09.txt" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/internet-<wbr>drafts/draft-wang-sf=
c-multi-<wbr>layer-oam-09.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-wang-sfc-multi-layer-oam/" rel=3D"noreferrer" target=3D"_bl=
ank">https://datatracker.ietf.org/<wbr>doc/draft-wang-sfc-multi-<wbr>layer-=
oam/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-wang-sfc-multi-layer-oam-09" rel=3D"noreferrer" target=3D"_blank">htt=
ps://tools.ietf.org/html/<wbr>draft-wang-sfc-multi-layer-<wbr>oam-09</a><br=
>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-wang-sfc-multi-layer-oam-09" rel=3D"noreferrer" target=3D"_=
blank">https://datatracker.ietf.org/<wbr>doc/html/draft-wang-sfc-multi-<wbr=
>layer-oam-09</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-wang-sfc-multi-layer-oam-09" rel=3D"noreferrer" tar=
get=3D"_blank">https://www.ietf.org/rfcdiff?<wbr>url2=3Ddraft-wang-sfc-mult=
i-<wbr>layer-oam-09</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0A multi-layer approach to the task of Operation, Administratio=
n and<br>
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in network=
s is<br>
=C2=A0 =C2=A0presented.=C2=A0 Based on the SFC OAM requirements, a multi-la=
yer model is<br>
=C2=A0 =C2=A0introduced.=C2=A0 A mechanism to detect and localize defects u=
sing the<br>
=C2=A0 =C2=A0multi-layer model is also described.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
</div><br></div></div>

--001a11c17ca4bf07f00551ec8f59--


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Wed, 14 Jun 2017 07:53:48 -0700
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Subject: [sfc] Use of Alternate Marking Method in SFC
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Dear All,
would like to bring your attention to the draft  Performance Measurement
(PM) with Alternate Marking Method in Service
<https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00>Function Chaining
(SFC) Domain <https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00> we've
submitted earlier. Alternate Marking method allows performance measurement
performed close to passive measurement methods.
Greatly appreciate your questions, comments, and suggestions.

Regards,
Greg

--001a113d2ecc3b22970551ecb891
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<div dir=3D"ltr">Dear All,<div>would like to bring your attention to the <a=
 href=3D"https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00">draft=C2=A0=
<b><u>=C2=A0</u></b><span style=3D"font-size:1em">Performance Measurement (=
PM) with Alternate Marking Method in Service=C2=A0</span></a><span class=3D=
"gmail-h1" style=3D"font-size:1em;line-height:0pt;display:inline"><h1 style=
=3D"line-height:0pt;display:inline;font-size:1em"><span style=3D"font-weigh=
t:normal"><a href=3D"https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00"=
>Function Chaining (SFC) Domain</a></span>=C2=A0</h1></span>we&#39;ve submi=
tted earlier. Alternate Marking method allows performance measurement perfo=
rmed close to passive measurement methods.</div><div>Greatly appreciate you=
r questions, comments, and suggestions.</div><div><br></div><div>Regards,</=
div><div>Greg</div><div><br></div><div><br></div></div>

--001a113d2ecc3b22970551ecb891--


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From: Tal Mizrahi <tal.mizrahi.phd@gmail.com>
Date: Wed, 21 Jun 2017 12:01:14 +0300
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To: Greg Mirsky <gregimirsky@gmail.com>
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Subject: Re: [sfc] Use of Alternate Marking Method in SFC
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--f403045c280641f8e90552749c50
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Hi Greg, Giuseppe,

I believe this work is valuable to the working group.

- My main comment is that it is not currently clear which bits in the base
header should be used as the marking bits. Section 3 should be clarified in
this context.
- The draft currently proposes either to use two marking bits, or a single
marking bit. For single marking the draft also presents two options. That
is a total of three options. I assume these options are presented for
clarity, but it would be great if in a later version of the memo this could
be narrowed down from 3 options to a single option. As always - the less
options the better.
- Section 5: please clarify whether the request is to allocate a value of
the OAM field, or the request is to allocate bits from the reserved bit
pool in the NSH base header.

Cheers,
Tal.

On Wed, Jun 14, 2017 at 5:53 PM, Greg Mirsky <gregimirsky@gmail.com> wrote:

> Dear All,
> would like to bring your attention to the draft  Performance Measurement
> (PM) with Alternate Marking Method in Service
> <https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00>Function Chaining
> (SFC) Domain <https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00> we've
> submitted earlier. Alternate Marking method allows performance measurement
> performed close to passive measurement methods.
> Greatly appreciate your questions, comments, and suggestions.
>
> Regards,
> Greg
>
>
>
> _______________________________________________
> sfc mailing list
> sfc@ietf.org
> https://www.ietf.org/mailman/listinfo/sfc
>
>

--f403045c280641f8e90552749c50
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hi Greg, Giuseppe,</div><div><br></div><div>I believe=
 this work is valuable to the working group.</div><div><br></div><div>- My =
main comment is that it is not currently clear which bits in the base heade=
r should be used as the marking bits. Section 3 should be clarified in this=
 context.</div><div>- The draft currently proposes either to use two markin=
g bits, or a single marking bit. For single marking the draft also presents=
 two options. That is a total of three options. I assume these options are =
presented for clarity, but it would be great if in a later version of the m=
emo this could be narrowed down from 3 options to a single option. As alway=
s - the less options the better.</div><div>- Section 5: please clarify whet=
her the request is to allocate a value of the OAM field, or the request is =
to allocate bits from the reserved bit pool in the NSH base header.</div><d=
iv><br></div><div>Cheers,</div><div>Tal.</div><div class=3D"gmail_extra"><b=
r><div class=3D"gmail_quote">On Wed, Jun 14, 2017 at 5:53 PM, Greg Mirsky <=
span dir=3D"ltr">&lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_bl=
ank">gregimirsky@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gm=
ail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-le=
ft:1ex"><div dir=3D"ltr">Dear All,<div>would like to bring your attention t=
o the <a href=3D"https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00" tar=
get=3D"_blank">draft=C2=A0<b><u>=C2=A0</u></b><span style=3D"font-size:1em"=
>Performance Measurement (PM) with Alternate Marking Method in Service=C2=
=A0</span></a><span class=3D"m_-5631460408219243278gmail-h1" style=3D"font-=
size:1em;line-height:0pt;display:inline"><h1 style=3D"line-height:0pt;displ=
ay:inline;font-size:1em"><span style=3D"font-weight:normal"><a href=3D"http=
s://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00" target=3D"_blank">Functi=
on Chaining (SFC) Domain</a></span>=C2=A0</h1></span>we&#39;ve submitted ea=
rlier. Alternate Marking method allows performance measurement performed cl=
ose to passive measurement methods.</div><div>Greatly appreciate your quest=
ions, comments, and suggestions.</div><div><br></div><div>Regards,</div><di=
v>Greg</div><div><br></div><div><br></div></div>
<br>______________________________<wbr>_________________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/sfc</a><br>
<br></blockquote></div><br></div></div>

--f403045c280641f8e90552749c50--


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Thu, 22 Jun 2017 16:55:54 -0500
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To: Tal Mizrahi <tal.mizrahi.phd@gmail.com>
Cc: sfc@ietf.org, "Fioccola Giuseppe (giuseppe.fioccola@telecomitalia.it)" <giuseppe.fioccola@telecomitalia.it>
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Subject: Re: [sfc] Use of Alternate Marking Method in SFC
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--001a113ac724848bf80552938c74
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Hi Tal,
thank you for for the review and great, on-target comments.
Please find my answers in-line tagged GIM>>.

Regards,
Greg

On Wed, Jun 21, 2017 at 4:01 AM, Tal Mizrahi <tal.mizrahi.phd@gmail.com>
wrote:

> Hi Greg, Giuseppe,
>
> I believe this work is valuable to the working group.
>
> - My main comment is that it is not currently clear which bits in the base
> header should be used as the marking bits. Section 3 should be clarified in
> this context.
>
GIM>> You are absolutely correct. We've started the draft around time of
the WG interim meeting and discussions about proposed changes to NSH Base.
As all these questions been resolved, I agree, it is time to pick location
for Marking field in the NSH Base.

- The draft currently proposes either to use two marking bits, or a single
> marking bit. For single marking the draft also presents two options. That
> is a total of three options. I assume these options are presented for
> clarity, but it would be great if in a later version of the memo this could
> be narrowed down from 3 options to a single option. As always - the less
> options the better.
>
GIM>> Very much agree with your practical suggestion. Will be glad to work
together on that.


> - Section 5: please clarify whether the request is to allocate a value of
> the OAM field, or the request is to allocate bits from the reserved bit
> pool in the NSH base header.
>
GIM>> It is the former, allocation of values of the Marking field (I
believe we should other than OAM field name as there's already O(AM) flag
in the Base header). Of course, current text assumes allocation of two
bits-long field.

>
> Cheers,
> Tal.
>
> On Wed, Jun 14, 2017 at 5:53 PM, Greg Mirsky <gregimirsky@gmail.com>
> wrote:
>
>> Dear All,
>> would like to bring your attention to the draft  Performance Measurement
>> (PM) with Alternate Marking Method in Service
>> <https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00>Function Chaining
>> (SFC) Domain <https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-00> we've
>> submitted earlier. Alternate Marking method allows performance measurement
>> performed close to passive measurement methods.
>> Greatly appreciate your questions, comments, and suggestions.
>>
>> Regards,
>> Greg
>>
>>
>>
>> _______________________________________________
>> sfc mailing list
>> sfc@ietf.org
>> https://www.ietf.org/mailman/listinfo/sfc
>>
>>
>

--001a113ac724848bf80552938c74
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Tal,<div>thank you for for the review and great, on-tar=
get comments.</div><div>Please find my answers in-line tagged GIM&gt;&gt;.<=
/div><div><br></div><div>Regards,</div><div>Greg</div><div class=3D"gmail_e=
xtra"><br><div class=3D"gmail_quote">On Wed, Jun 21, 2017 at 4:01 AM, Tal M=
izrahi <span dir=3D"ltr">&lt;<a href=3D"mailto:tal.mizrahi.phd@gmail.com" t=
arget=3D"_blank">tal.mizrahi.phd@gmail.com</a>&gt;</span> wrote:<br><blockq=
uote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc =
solid;padding-left:1ex"><div dir=3D"ltr"><div>Hi Greg, Giuseppe,</div><div>=
<br></div><div>I believe this work is valuable to the working group.</div><=
div><br></div><div>- My main comment is that it is not currently clear whic=
h bits in the base header should be used as the marking bits. Section 3 sho=
uld be clarified in this context.</div></div></blockquote><div>GIM&gt;&gt; =
You are absolutely correct. We&#39;ve started the draft around time of the =
WG interim meeting and discussions about proposed changes to NSH Base. As a=
ll these questions been resolved, I agree, it is time to pick location for =
Marking field in the NSH Base.</div><div><br></div><blockquote class=3D"gma=
il_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-lef=
t:1ex"><div dir=3D"ltr"><div>- The draft currently proposes either to use t=
wo marking bits, or a single marking bit. For single marking the draft also=
 presents two options. That is a total of three options. I assume these opt=
ions are presented for clarity, but it would be great if in a later version=
 of the memo this could be narrowed down from 3 options to a single option.=
 As always - the less options the better.</div></div></blockquote><div>GIM&=
gt;&gt; Very much agree with your practical suggestion. Will be glad to wor=
k together on that.</div><div>=C2=A0</div><blockquote class=3D"gmail_quote"=
 style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><d=
iv dir=3D"ltr"><div>- Section 5: please clarify whether the request is to a=
llocate a value of the OAM field, or the request is to allocate bits from t=
he reserved bit pool in the NSH base header.</div></div></blockquote><div>G=
IM&gt;&gt; It is the former, allocation of values of the Marking field (I b=
elieve we should other than OAM field name as there&#39;s already O(AM) fla=
g in the Base header). Of course, current text assumes allocation of two bi=
ts-long field.</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0=
 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div><b=
r></div><div>Cheers,</div><div>Tal.</div><div class=3D"gmail_extra"><br><di=
v class=3D"gmail_quote"><span class=3D"">On Wed, Jun 14, 2017 at 5:53 PM, G=
reg Mirsky <span dir=3D"ltr">&lt;<a href=3D"mailto:gregimirsky@gmail.com" t=
arget=3D"_blank">gregimirsky@gmail.com</a>&gt;</span> wrote:<br></span><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #c=
cc solid;padding-left:1ex"><div><div class=3D"h5"><div dir=3D"ltr">Dear All=
,<div>would like to bring your attention to the <a href=3D"https://tools.ie=
tf.org/html/draft-mirsky-sfc-pmamm-00" target=3D"_blank">draft=C2=A0<b><u>=
=C2=A0</u></b><span style=3D"font-size:1em">Performance Measurement (PM) wi=
th Alternate Marking Method in Service=C2=A0</span></a><span class=3D"m_375=
801165840198931m_-5631460408219243278gmail-h1" style=3D"font-size:1em;line-=
height:0pt;display:inline"><h1 style=3D"line-height:0pt;display:inline;font=
-size:1em"><span style=3D"font-weight:normal"><a href=3D"https://tools.ietf=
.org/html/draft-mirsky-sfc-pmamm-00" target=3D"_blank">Function Chaining (S=
FC) Domain</a></span>=C2=A0</h1></span>we&#39;ve submitted earlier. Alterna=
te Marking method allows performance measurement performed close to passive=
 measurement methods.</div><div>Greatly appreciate your questions, comments=
, and suggestions.</div><div><br></div><div>Regards,</div><div>Greg</div><d=
iv><br></div><div><br></div></div>
<br></div></div><span class=3D"">______________________________<wbr>_______=
__________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org" target=3D"_blank">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/sfc</a><br>
<br></span></blockquote></div><br></div></div>
</blockquote></div><br></div></div>

--001a113ac724848bf80552938c74--


From nobody Fri Jun 23 17:14:13 2017
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Subject: [sfc] sfc - Requested session has been scheduled for IETF 99
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Dear Joel Halpern,

The session(s) that you have requested have been scheduled.
Below is the scheduled session information followed by
the original request. 

sfc Session 1 (1:30:00)
    Monday, Afternoon Session II 1550-1720
    Room Name: Congress Hall II size: 350
    ---------------------------------------------
    


Request Information:


---------------------------------------------------------
Working Group Name: Service Function Chaining
Area Name: Routing Area
Session Requester: Joel Halpern

Number of Sessions: 1
Length of Session(s):  1.5 Hours
Number of Attendees: 150
Conflicts to Avoid: 
 First Priority: spring rtgwg nvo3 mpls lisp idr i2rs bess supa quic




People who must be present:
  Joel M. Halpern
  Jim Guichard
  Alia Atlas

Resources Requested:

Special Requests:
  
---------------------------------------------------------


From nobody Mon Jun 26 11:01:34 2017
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Subject: [sfc] Meeting at IETF 99 in Prague
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We are meeting from 15:50 to 17:20 Monday, July 17 in Congress Hall II.

Please send us requests for agenda time.
We expect to have the NSH document completed and given to our Area 
Director by then.

In addition to regular items, Jim and I would like to reserve about 20 - 
30 minutes for a discussion by the working group of what items people 
see needing work going forward.  this can be items that fall within the 
current charter, but are not sufficiently addressed, or they may be 
items which would need rechartering.
The approach we plan on is for someone with an idea to come to the 
microphone, and briefly summarize the idea and reasons.  No Slides. 
Then, we will give folks time to ask questions, express opinions, 
suggest refinements, etc.
Then we move on to the next idea.
So please think about items you would like discussed in this slot.
We will try to make the remote participation work well so that 
suggestions and refinements can come from those who can not make it to 
prague as well.

We would expect the conversation to continue on the email list.

Thank you,
Joel and Jim


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To: "Black, David" <david.black@emc.com>, "Carlos Pignataro (cpignata)" <cpignata@cisco.com>, Ignacio Goyret <ignacio.goyret@nokia.com>, Alia ATLAS <akatlas@gmail.com>, Praveen Balasubramanian <pravb@microsoft.com>, Joe Touch <touch@isi.edu>, "nvo3@ietf.org" <nvo3@ietf.org>, Christian Huitema <huitema@microsoft.com>
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Subject: [sfc] ECN over IP-shim-(L2)-IP Tunnels: New draft-ietf-tsvwg-rfc6040update-shim-03
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David (as doc shepherd),

This is the 3rd revision in the last 2 months. This revision attempts to 
capture all the comments collected thanks to Carlos, Ignacio, Praveen, 
Joe and Alia. It would be useful to have a confirmation from each of you 
that I have addressed your concerns (or not).

I have cross-posted all the lists potentially affected by this draft 
(intended proposed standard).
If you reply concerning a specific point, pls trim the distribution only 
to those interested/relevant.

* tsvwg: owns updates to ECN
* int-area: owns mtce of many tunnelling protocols, particularly GRE?, 
Teredo? GUE
* l2tpext: owns mtce of L2TP
* opsawg: owns mtce of CAPWAP
* nvo3: currently defining Geneve, VXLAN-GPE
* sfc: currently defining NSH

 From my point of view, this draft is now 'finished'. I.e. I am happy 
with it, and it is the first draft where all the ToDo's are done. I 
believe it is on track for the milestone of WGLC before the Nov'17 IETF. 
As I understand it, WGLC will run in tsvwg and in parallel in int-area, 
l2tpext and perhaps opsawg.

Main changes since -02:
* Completely restructured, with definitions of scope before even 
mentioning "tightly coupled shim headers", and new subsections where 
existing text on feasibility and desirability has been re-homed.
* Explanation of the safety problem, and the procedural problem this 
caused when previous ECN RFCs were written (an RFC cannot 
retrospectively set requirements on implementations, so we can only set 
operational requirements - configuration).
* Added NSH, but it doesn't seem to cover encapsulation.
* No longer categorized VXLAN-GPE as intended for standards track
* Added Teredo update text (for safety).

Cheers


Bob

-------- Forwarded Message --------
Subject: 	New Version Notification for 
draft-ietf-tsvwg-rfc6040update-shim-03.txt
Date: 	Tue, 27 Jun 2017 04:13:58 -0700
From: 	internet-drafts@ietf.org
To: 	Bob Briscoe <ietf@bobbriscoe.net>



A new version of I-D, draft-ietf-tsvwg-rfc6040update-shim-03.txt
has been successfully submitted by Bob Briscoe and posted to the
IETF repository.

Name:		draft-ietf-tsvwg-rfc6040update-shim
Revision:	03
Title:		Propagating Explicit Congestion Notification Across IP Tunnel Headers Separated by a Shim
Document date:	2017-06-27
Group:		tsvwg
Pages:		16
URL:            https://www.ietf.org/internet-drafts/draft-ietf-tsvwg-rfc6040update-shim-03.txt
Status:         https://datatracker.ietf.org/doc/draft-ietf-tsvwg-rfc6040update-shim/
Htmlized:       https://tools.ietf.org/html/draft-ietf-tsvwg-rfc6040update-shim-03
Htmlized:       https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-rfc6040update-shim-03
Diff:           https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-rfc6040update-shim-03

Abstract:
    RFC 6040 on "Tunnelling of Explicit Congestion Notification" made the
    rules for propagation of ECN consistent for all forms of IP in IP
    tunnel.  This specification updates RFC 6040 to clarify that its
    scope includes tunnels where two IP headers are separated by at least
    one shim header that is not sufficient on its own for wide area
    packet forwarding.  It surveys widely deployed IP tunnelling
    protocols separated by such shim header(s) and updates the
    specifications of those that do not mention ECN propagation (L2TPv2,
    L2TPv3, GRE and Teredo).  This specification also updates RFC 6040
    with configuration requirements needed to make any legacy tunnel
    ingress safe.

                                                                                   


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat


--------------6A1261D435D710497D63773F
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Content-Transfer-Encoding: 7bit

<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=utf-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    David (as doc shepherd),<br>
    <br>
    This is the 3rd revision in the last 2 months. This revision
    attempts to capture all the comments collected thanks to Carlos,
    Ignacio, Praveen, Joe and Alia. It would be useful to have a
    confirmation from each of you that I have addressed your concerns
    (or not). <br>
    <br>
    I have cross-posted all the lists potentially affected by this draft
    (intended proposed standard).<br>
    If you reply concerning a specific point, pls trim the distribution
    only to those interested/relevant.<br>
    <br>
    * tsvwg: owns updates to ECN <br>
    * int-area: owns mtce of many tunnelling protocols, particularly
    GRE?, Teredo? GUE<br>
    * l2tpext: owns mtce of L2TP<br>
    * opsawg: owns mtce of CAPWAP<br>
    * nvo3: currently defining Geneve, VXLAN-GPE<br>
    * sfc: currently defining NSH<br>
    <div class="moz-forward-container"><br>
    </div>
    From my point of view, this draft is now 'finished'. I.e. I am happy
    with it, and it is the first draft where all the ToDo's are done. I
    believe it is on track for the milestone of WGLC before the Nov'17
    IETF. As I understand it, WGLC will run in tsvwg and in parallel in
    int-area, l2tpext and perhaps opsawg.<br>
    <br>
    Main changes since -02:<br>
    <div class="moz-forward-container">* Completely restructured, with
      definitions of scope before even mentioning "tightly coupled shim
      headers", and new subsections where existing text on feasibility
      and desirability has been re-homed.<br>
      * Explanation of the safety problem, and the procedural problem
      this caused when previous ECN RFCs were written (an RFC cannot
      retrospectively set requirements on implementations, so we can
      only set operational requirements - configuration).<br>
      * Added NSH, but it doesn't seem to cover encapsulation.<br>
      * No longer categorized VXLAN-GPE as intended for standards track<br>
      * Added Teredo update text (for safety).<br>
      <br>
      Cheers<br>
      <br>
      <br>
      Bob<br>
      <br>
      -------- Forwarded Message --------
      <table class="moz-email-headers-table" cellspacing="0"
        cellpadding="0" border="0">
        <tbody>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">Subject:
            </th>
            <td>New Version Notification for
              draft-ietf-tsvwg-rfc6040update-shim-03.txt</td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">Date: </th>
            <td>Tue, 27 Jun 2017 04:13:58 -0700</td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">From: </th>
            <td><a class="moz-txt-link-abbreviated" href="mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a></td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">To: </th>
            <td>Bob Briscoe <a class="moz-txt-link-rfc2396E" href="mailto:ietf@bobbriscoe.net">&lt;ietf@bobbriscoe.net&gt;</a></td>
          </tr>
        </tbody>
      </table>
      <br>
      <br>
      <pre>A new version of I-D, draft-ietf-tsvwg-rfc6040update-shim-03.txt
has been successfully submitted by Bob Briscoe and posted to the
IETF repository.

Name:		draft-ietf-tsvwg-rfc6040update-shim
Revision:	03
Title:		Propagating Explicit Congestion Notification Across IP Tunnel Headers Separated by a Shim
Document date:	2017-06-27
Group:		tsvwg
Pages:		16
URL:            <a class="moz-txt-link-freetext" href="https://www.ietf.org/internet-drafts/draft-ietf-tsvwg-rfc6040update-shim-03.txt">https://www.ietf.org/internet-drafts/draft-ietf-tsvwg-rfc6040update-shim-03.txt</a>
Status:         <a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/draft-ietf-tsvwg-rfc6040update-shim/">https://datatracker.ietf.org/doc/draft-ietf-tsvwg-rfc6040update-shim/</a>
Htmlized:       <a class="moz-txt-link-freetext" href="https://tools.ietf.org/html/draft-ietf-tsvwg-rfc6040update-shim-03">https://tools.ietf.org/html/draft-ietf-tsvwg-rfc6040update-shim-03</a>
Htmlized:       <a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-rfc6040update-shim-03">https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-rfc6040update-shim-03</a>
Diff:           <a class="moz-txt-link-freetext" href="https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-rfc6040update-shim-03">https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-rfc6040update-shim-03</a>

Abstract:
   RFC 6040 on "Tunnelling of Explicit Congestion Notification" made the
   rules for propagation of ECN consistent for all forms of IP in IP
   tunnel.  This specification updates RFC 6040 to clarify that its
   scope includes tunnels where two IP headers are separated by at least
   one shim header that is not sufficient on its own for wide area
   packet forwarding.  It surveys widely deployed IP tunnelling
   protocols separated by such shim header(s) and updates the
   specifications of those that do not mention ECN propagation (L2TPv2,
   L2TPv3, GRE and Teredo).  This specification also updates RFC 6040
   with configuration requirements needed to make any legacy tunnel
   ingress safe.

                                                                                  


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat

</pre>
    </div>
  </body>
</html>

--------------6A1261D435D710497D63773F--


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From: <mohamed.boucadair@orange.com>
To: Bob Briscoe <ietf@bobbriscoe.net>, "Black, David" <david.black@emc.com>
CC: Service Function Chaining IETF list <sfc@ietf.org>
Thread-Topic: [tsvwg] ECN over IP-shim-(L2)-IP Tunnels: New draft-ietf-tsvwg-rfc6040update-shim-03
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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: Med Boucadair <mohamed.boucadair@orange.com>
CC: Bob Briscoe <ietf@bobbriscoe.net>, "Black, David" <david.black@emc.com>, Service Function Chaining IETF list <sfc@ietf.org>
Thread-Topic: [sfc] [tsvwg] ECN over IP-shim-(L2)-IP Tunnels: New draft-ietf-tsvwg-rfc6040update-shim-03
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Date: Tue, 27 Jun 2017 15:07:40 +0000
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Subject: Re: [sfc] [tsvwg] ECN over IP-shim-(L2)-IP Tunnels: New draft-ietf-tsvwg-rfc6040update-shim-03
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Wed, 28 Jun 2017 20:30:45 -0700
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To: "Joel M. Halpern" <jmh@joelhalpern.com>
Cc: "sfc@ietf.org" <sfc@ietf.org>
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Subject: Re: [sfc] Meeting at IETF 99 in Prague
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--94eb2c055b32134322055310ed9e
Content-Type: text/plain; charset="UTF-8"

Hi Joel and Jim,
we've prepared set of drafts that we've viewed as one block of SFC OAM
related work. Understand that agenda may get overloaded, so here our
proverbial hat in the ring:

   - draft-wang-sfc-multilayer-oam - presenter Greg Mirsky
   - draft-ao-sfc-oam-return-path-specified - presenter Ting Ao
   - draft-ao-sfc-oam-path-consistency - presenter Ting Ao
   - draft-mirsky-sfc-pmamm - presenter Greg Mirsky

Would greatly appreciate opportunity to present them all in the single
block.

Regards,
Greg

On Mon, Jun 26, 2017 at 11:01 AM, Joel M. Halpern <jmh@joelhalpern.com>
wrote:

> We are meeting from 15:50 to 17:20 Monday, July 17 in Congress Hall II.
>
> Please send us requests for agenda time.
> We expect to have the NSH document completed and given to our Area
> Director by then.
>
> In addition to regular items, Jim and I would like to reserve about 20 -
> 30 minutes for a discussion by the working group of what items people see
> needing work going forward.  this can be items that fall within the current
> charter, but are not sufficiently addressed, or they may be items which
> would need rechartering.
> The approach we plan on is for someone with an idea to come to the
> microphone, and briefly summarize the idea and reasons.  No Slides. Then,
> we will give folks time to ask questions, express opinions, suggest
> refinements, etc.
> Then we move on to the next idea.
> So please think about items you would like discussed in this slot.
> We will try to make the remote participation work well so that suggestions
> and refinements can come from those who can not make it to prague as well.
>
> We would expect the conversation to continue on the email list.
>
> Thank you,
> Joel and Jim
>
> _______________________________________________
> sfc mailing list
> sfc@ietf.org
> https://www.ietf.org/mailman/listinfo/sfc
>

--94eb2c055b32134322055310ed9e
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Joel and Jim,<div>we&#39;ve prepared set of drafts that=
 we&#39;ve viewed as one block of SFC OAM related work. Understand that age=
nda may get overloaded, so here our proverbial hat in the ring:</div><div><=
ul><li>draft-wang-sfc-multilayer-oam - presenter Greg Mirsky</li><li>draft-=
ao-sfc-oam-return-path-<wbr>specified - presenter Ting Ao</li><li>draft-ao-=
sfc-oam-path-<wbr>consistency - presenter Ting Ao</li><li>draft-mirsky-sfc-=
pmamm - presenter Greg Mirsky</li></ul><div>Would greatly appreciate opport=
unity to present them all in the single block.</div></div><div><br></div><d=
iv>Regards,</div><div>Greg</div><div class=3D"gmail_extra"><br><div class=
=3D"gmail_quote">On Mon, Jun 26, 2017 at 11:01 AM, Joel M. Halpern <span di=
r=3D"ltr">&lt;<a href=3D"mailto:jmh@joelhalpern.com" target=3D"_blank">jmh@=
joelhalpern.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" =
style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">We =
are meeting from 15:50 to 17:20 Monday, July 17 in Congress Hall II.<br>
<br>
Please send us requests for agenda time.<br>
We expect to have the NSH document completed and given to our Area Director=
 by then.<br>
<br>
In addition to regular items, Jim and I would like to reserve about 20 - 30=
 minutes for a discussion by the working group of what items people see nee=
ding work going forward.=C2=A0 this can be items that fall within the curre=
nt charter, but are not sufficiently addressed, or they may be items which =
would need rechartering.<br>
The approach we plan on is for someone with an idea to come to the micropho=
ne, and briefly summarize the idea and reasons.=C2=A0 No Slides. Then, we w=
ill give folks time to ask questions, express opinions, suggest refinements=
, etc.<br>
Then we move on to the next idea.<br>
So please think about items you would like discussed in this slot.<br>
We will try to make the remote participation work well so that suggestions =
and refinements can come from those who can not make it to prague as well.<=
br>
<br>
We would expect the conversation to continue on the email list.<br>
<br>
Thank you,<br>
Joel and Jim<br>
<br>
______________________________<wbr>_________________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org" target=3D"_blank">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/sfc</a><br>
</blockquote></div><br></div></div>

--94eb2c055b32134322055310ed9e--


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From: "Kent Leung (kleung)" <kleung@cisco.com>
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From nobody Thu Jun 29 15:44:25 2017
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Reply-To: <adrian@olddog.co.uk>
From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'Joel M. Halpern'" <jmh@joelhalpern.com>, <sfc@ietf.org>
References: <342b99e4-12e4-9fe8-3e98-a634dae89422@joelhalpern.com>
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Date: Thu, 29 Jun 2017 23:44:11 +0100
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Subject: Re: [sfc] Meeting at IETF 99 in Prague
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Hi Joel,

I think it might be a good time for me to talk about draft-farrel-sfc-convent.
It's been a while since the idea was first floated and it has been somewhat
gated behind the main NSH work.
It is probably also worth having this discussion before we go much further with
the OAM work.

Cheers,
Adrian

> -----Original Message-----
> From: sfc [mailto:sfc-bounces@ietf.org] On Behalf Of Joel M. Halpern
> Sent: 26 June 2017 19:01
> To: sfc@ietf.org
> Subject: [sfc] Meeting at IETF 99 in Prague
> 
> We are meeting from 15:50 to 17:20 Monday, July 17 in Congress Hall II.
> 
> Please send us requests for agenda time.
> We expect to have the NSH document completed and given to our Area
> Director by then.
> 
> In addition to regular items, Jim and I would like to reserve about 20 -
> 30 minutes for a discussion by the working group of what items people
> see needing work going forward.  this can be items that fall within the
> current charter, but are not sufficiently addressed, or they may be
> items which would need rechartering.
> The approach we plan on is for someone with an idea to come to the
> microphone, and briefly summarize the idea and reasons.  No Slides.
> Then, we will give folks time to ask questions, express opinions,
> suggest refinements, etc.
> Then we move on to the next idea.
> So please think about items you would like discussed in this slot.
> We will try to make the remote participation work well so that
> suggestions and refinements can come from those who can not make it to
> prague as well.
> 
> We would expect the conversation to continue on the email list.
> 
> Thank you,
> Joel and Jim
> 
> _______________________________________________
> sfc mailing list
> sfc@ietf.org
> https://www.ietf.org/mailman/listinfo/sfc


From nobody Thu Jun 29 15:44:39 2017
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Reply-To: <adrian@olddog.co.uk>
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To: <sfc@ietf.org>
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Subject: [sfc] Next Protocol = "None"
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All,

I refreshed this draft with a little polish.

Recall, it describes how, by setting the NSH "next protocol" field to "None" it
is possible to send an NSH packet without user data but with metadata.

Also recall that this document contains a description of how to handle an NSH
packet with an unknown/unsupported "next protocol" field value. 

We previously discussed whether to move some or all of this material to the NSH
document.
The feeling that I recorded was that the description of handling unknown next
protocols needs to be in the NSH spec, but that it might be wise to leave the
meaning and use of "none" to a separate document to avoid delaying the NSH spec.
I would note that the lack of rapid advancement of the NSH spec might suggest
that we should roll all of this in together.

Along the way, I found I needed to write text about the security implications of
metadata and the way that metadata should be secured. In theory, this should all
be covered in the NSH spec, but it isn't.

Cheers,
Adrian

> -----Original Message-----
> From: I-D-Announce [mailto:i-d-announce-bounces@ietf.org] On Behalf Of
> internet-drafts@ietf.org
> Sent: 29 June 2017 23:28
> To: i-d-announce@ietf.org
> Subject: I-D Action: draft-farrel-sfc-convent-02.txt
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts
directories.
> 
> 
>         Title           : Operating the Network Service Header (NSH) with Next
Protocol
> "None"
>         Authors         : Adrian Farrel
>                           John Drake
> 	Filename        : draft-farrel-sfc-convent-02.txt
> 	Pages           : 10
> 	Date            : 2017-06-29
> 
> Abstract:
>    This document describes the use of the Network Service Header (NSH)
>    in a Service Function Chaining (SFC) enabled network with no payload
>    data and carrying only metadata.  This is achieved by defining a new
>    NSH "Next Protocol" type value of "None".
> 
>    This document illustrates some of the functions that may be achieved
>    or enhanced by this mechanism, but it does not provide an exhaustive
>    list of use cases, nor is it intended to be definitive about the
>    functions it describes.  It is expected that other documents will
>    describe specific use cases in more detail and will define the
>    protocol mechanics for each use case.
> 
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-farrel-sfc-convent/
> 
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-farrel-sfc-convent-02
> https://datatracker.ietf.org/doc/html/draft-farrel-sfc-convent-02
> 
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-farrel-sfc-convent-02
> 
> 
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
> _______________________________________________
> I-D-Announce mailing list
> I-D-Announce@ietf.org
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> Internet-Draft directories: http://www.ietf.org/shadow.html
> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt


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From: "Joel M. Halpern" <jmh@joelhalpern.com>
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Date: Thu, 29 Jun 2017 18:47:36 -0400
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Subject: Re: [sfc] Meeting at IETF 99 in Prague
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Sounds reasonable to me.  We will plan a slot for you.
Yours,
Joel

On 6/29/17 6:44 PM, Adrian Farrel wrote:
> Hi Joel,
> 
> I think it might be a good time for me to talk about draft-farrel-sfc-convent.
> It's been a while since the idea was first floated and it has been somewhat
> gated behind the main NSH work.
> It is probably also worth having this discussion before we go much further with
> the OAM work.
> 
> Cheers,
> Adrian
> 
>> -----Original Message-----
>> From: sfc [mailto:sfc-bounces@ietf.org] On Behalf Of Joel M. Halpern
>> Sent: 26 June 2017 19:01
>> To: sfc@ietf.org
>> Subject: [sfc] Meeting at IETF 99 in Prague
>>
>> We are meeting from 15:50 to 17:20 Monday, July 17 in Congress Hall II.
>>
>> Please send us requests for agenda time.
>> We expect to have the NSH document completed and given to our Area
>> Director by then.
>>
>> In addition to regular items, Jim and I would like to reserve about 20 -
>> 30 minutes for a discussion by the working group of what items people
>> see needing work going forward.  this can be items that fall within the
>> current charter, but are not sufficiently addressed, or they may be
>> items which would need rechartering.
>> The approach we plan on is for someone with an idea to come to the
>> microphone, and briefly summarize the idea and reasons.  No Slides.
>> Then, we will give folks time to ask questions, express opinions,
>> suggest refinements, etc.
>> Then we move on to the next idea.
>> So please think about items you would like discussed in this slot.
>> We will try to make the remote participation work well so that
>> suggestions and refinements can come from those who can not make it to
>> prague as well.
>>
>> We would expect the conversation to continue on the email list.
>>
>> Thank you,
>> Joel and Jim
>>
>> _______________________________________________
>> sfc mailing list
>> sfc@ietf.org
>> https://www.ietf.org/mailman/listinfo/sfc
> 


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To: "'Joel M. Halpern'" <jmh@joelhalpern.com>, <sfc@ietf.org>
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Subject: [sfc] Status of draft-ietf-sfc-nsh [Was: Meeting at IETF 99 in Prague]
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Hi Joel,

You said...

> We are meeting from 15:50 to 17:20 Monday, July 17 in Congress Hall II.
> 
> Please send us requests for agenda time.
> We expect to have the NSH document completed and given to our Area
> Director by then.

I'm both glad and worried to hear this.
Glad because, as you know, I have become frustrated with the lack of progress.
There has been some good discussion of TTL, but was that really the only open
issue?
What about all of the other comments since the last version?
And were all of the previous comments actually addressed?
To be honest, I lost track, but know that I made a lot of comments on the -12
revision and that Med pointed out something that had been missed in -12 from a
previous comment.

If I recall rightly, the WG last call was issued in September last year on the
-09 version. I presume there will be a -13 revision to go to the AD. So four
revisions and 9 months later do you plan to have another WG last call, or are
you declaring consensus on the -13 document?

Thanks,
Adrian


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To: adrian@olddog.co.uk, sfc@ietf.org
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From: "Joel M. Halpern" <jmh@joelhalpern.com>
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Subject: Re: [sfc] Status of draft-ietf-sfc-nsh [Was: Meeting at IETF 99 in Prague]
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We went through all the comments with the authors, and checked again 
after they had made their revisions.  All the comments that were 
received were addressed, according to our best judgment on the WG rough 
consensus.

There will be some time for the WG to look again to make sure we did not 
miss anything before the meeting, which is why I expect (and hope) to 
give it to the AD by the meeting.
Jim and I have not discussed the exact form of the final review.  It 
will be focused on "can you live with the text as it is", as distinct 
from "is this perfect" (I know most of the WG knows the difference, but 
it helps to mention it, as the IETF is VERY good at wordsmithing forever.)

Yours,
Joel anc Jim

On 6/29/17 6:55 PM, Adrian Farrel wrote:
> Hi Joel,
> 
> You said...
> 
>> We are meeting from 15:50 to 17:20 Monday, July 17 in Congress Hall II.
>>
>> Please send us requests for agenda time.
>> We expect to have the NSH document completed and given to our Area
>> Director by then.
> 
> I'm both glad and worried to hear this.
> Glad because, as you know, I have become frustrated with the lack of progress.
> There has been some good discussion of TTL, but was that really the only open
> issue?
> What about all of the other comments since the last version?
> And were all of the previous comments actually addressed?
> To be honest, I lost track, but know that I made a lot of comments on the -12
> revision and that Med pointed out something that had been missed in -12 from a
> previous comment.
> 
> If I recall rightly, the WG last call was issued in September last year on the
> -09 version. I presume there will be a -13 revision to go to the AD. So four
> revisions and 9 months later do you plan to have another WG last call, or are
> you declaring consensus on the -13 document?
> 
> Thanks,
> Adrian
> 


From nobody Thu Jun 29 16:21:13 2017
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Thu, 29 Jun 2017 16:21:07 -0700
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Subject: Re: [sfc] Status of draft-ietf-sfc-nsh [Was: Meeting at IETF 99 in Prague]
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--001a113c772029abb50553218e01
Content-Type: text/plain; charset="UTF-8"

Hi Joel,
is the -12 the latest published version of the NSH draft? As I see, it is
missing TTL and all related changes:

3.2.  NSH Base Header

      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |Ver|O|C|R|R|R|R|R|R|   Length  |    MD Type    | Next Protocol |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

But the

WG state <https://datatracker.ietf.org/help/state/draft/ietf> Waiting for
WG Chair Go-Ahead
Doc Shepherd Follow-up Underway

I'm confused.

Regards,
Greg

On Thu, Jun 29, 2017 at 4:01 PM, Joel M. Halpern <jmh@joelhalpern.com>
wrote:

> We went through all the comments with the authors, and checked again after
> they had made their revisions.  All the comments that were received were
> addressed, according to our best judgment on the WG rough consensus.
>
> There will be some time for the WG to look again to make sure we did not
> miss anything before the meeting, which is why I expect (and hope) to give
> it to the AD by the meeting.
> Jim and I have not discussed the exact form of the final review.  It will
> be focused on "can you live with the text as it is", as distinct from "is
> this perfect" (I know most of the WG knows the difference, but it helps to
> mention it, as the IETF is VERY good at wordsmithing forever.)
>
> Yours,
> Joel anc Jim
>
>
> On 6/29/17 6:55 PM, Adrian Farrel wrote:
>
>> Hi Joel,
>>
>> You said...
>>
>> We are meeting from 15:50 to 17:20 Monday, July 17 in Congress Hall II.
>>>
>>> Please send us requests for agenda time.
>>> We expect to have the NSH document completed and given to our Area
>>> Director by then.
>>>
>>
>> I'm both glad and worried to hear this.
>> Glad because, as you know, I have become frustrated with the lack of
>> progress.
>> There has been some good discussion of TTL, but was that really the only
>> open
>> issue?
>> What about all of the other comments since the last version?
>> And were all of the previous comments actually addressed?
>> To be honest, I lost track, but know that I made a lot of comments on the
>> -12
>> revision and that Med pointed out something that had been missed in -12
>> from a
>> previous comment.
>>
>> If I recall rightly, the WG last call was issued in September last year
>> on the
>> -09 version. I presume there will be a -13 revision to go to the AD. So
>> four
>> revisions and 9 months later do you plan to have another WG last call, or
>> are
>> you declaring consensus on the -13 document?
>>
>> Thanks,
>> Adrian
>>
>>
> _______________________________________________
> sfc mailing list
> sfc@ietf.org
> https://www.ietf.org/mailman/listinfo/sfc
>

--001a113c772029abb50553218e01
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Joel,<div>is the -12 the latest published version of th=
e NSH draft? As I see, it is missing TTL and all related changes:</div><div=
><pre style=3D"box-sizing:border-box;overflow:auto;font-family:&quot;PT Mon=
o&quot;,Monaco,monospace;font-size:14px;padding:10px;margin-top:0px;margin-=
bottom:10.5px;line-height:1.214;color:rgb(0,0,0);word-break:break-all;word-=
wrap:break-word;background-color:rgb(255,253,245);border:1px solid rgb(204,=
204,204);border-radius:4px"><span class=3D"gmail-m_h" style=3D"box-sizing:b=
order-box">3.2.  NSH Base Header</span>

      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |Ver|O|C|R|R|R|R|R|R|   Length  |    MD Type    | Next Protocol |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
</pre></div><div>But the=C2=A0</div><br><table class=3D"gmail-table gmail-t=
able-condensed" style=3D"box-sizing:border-box;border-collapse:collapse;wid=
th:1167px;max-width:100%;margin-bottom:21px;font-family:&quot;PT Serif&quot=
;,Palatino,&quot;Neue Swift&quot;,serif;font-size:15px"><tbody class=3D"gma=
il-meta" style=3D"box-sizing:border-box;border-top:2px solid rgb(221,221,22=
1)"><tr style=3D"box-sizing:border-box"><th style=3D"box-sizing:border-box;=
padding:3px;text-align:right;line-height:1.42857;vertical-align:top;border-=
top:0px;width:9em"><a href=3D"https://datatracker.ietf.org/help/state/draft=
/ietf" style=3D"box-sizing:border-box;background-color:transparent;color:rg=
b(39,22,115);outline:0px">WG state</a></th><td class=3D"edit" style=3D"box-=
sizing:border-box;padding:3px;line-height:1.42857;vertical-align:top;border=
-top:0px;width:1px"></td><td style=3D"box-sizing:border-box;padding:3px;lin=
e-height:1.42857;vertical-align:top;border-top:0px">Waiting for WG Chair Go=
-Ahead<div class=3D"gmail-stream-tags" style=3D"box-sizing:border-box">Doc =
Shepherd Follow-up Underway</div><div class=3D"gmail-stream-tags" style=3D"=
box-sizing:border-box"><br></div><div class=3D"gmail-stream-tags" style=3D"=
box-sizing:border-box">I&#39;m confused.</div><div class=3D"gmail-stream-ta=
gs" style=3D"box-sizing:border-box"><br></div><div class=3D"gmail-stream-ta=
gs" style=3D"box-sizing:border-box">Regards,</div><div class=3D"gmail-strea=
m-tags" style=3D"box-sizing:border-box">Greg</div></td></tr></tbody></table=
></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Thu, Ju=
n 29, 2017 at 4:01 PM, Joel M. Halpern <span dir=3D"ltr">&lt;<a href=3D"mai=
lto:jmh@joelhalpern.com" target=3D"_blank">jmh@joelhalpern.com</a>&gt;</spa=
n> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;b=
order-left:1px #ccc solid;padding-left:1ex">We went through all the comment=
s with the authors, and checked again after they had made their revisions.=
=C2=A0 All the comments that were received were addressed, according to our=
 best judgment on the WG rough consensus.<br>
<br>
There will be some time for the WG to look again to make sure we did not mi=
ss anything before the meeting, which is why I expect (and hope) to give it=
 to the AD by the meeting.<br>
Jim and I have not discussed the exact form of the final review.=C2=A0 It w=
ill be focused on &quot;can you live with the text as it is&quot;, as disti=
nct from &quot;is this perfect&quot; (I know most of the WG knows the diffe=
rence, but it helps to mention it, as the IETF is VERY good at wordsmithing=
 forever.)<br>
<br>
Yours,<br>
Joel anc Jim<div class=3D"HOEnZb"><div class=3D"h5"><br>
<br>
On 6/29/17 6:55 PM, Adrian Farrel wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Hi Joel,<br>
<br>
You said...<br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
We are meeting from 15:50 to 17:20 Monday, July 17 in Congress Hall II.<br>
<br>
Please send us requests for agenda time.<br>
We expect to have the NSH document completed and given to our Area<br>
Director by then.<br>
</blockquote>
<br>
I&#39;m both glad and worried to hear this.<br>
Glad because, as you know, I have become frustrated with the lack of progre=
ss.<br>
There has been some good discussion of TTL, but was that really the only op=
en<br>
issue?<br>
What about all of the other comments since the last version?<br>
And were all of the previous comments actually addressed?<br>
To be honest, I lost track, but know that I made a lot of comments on the -=
12<br>
revision and that Med pointed out something that had been missed in -12 fro=
m a<br>
previous comment.<br>
<br>
If I recall rightly, the WG last call was issued in September last year on =
the<br>
-09 version. I presume there will be a -13 revision to go to the AD. So fou=
r<br>
revisions and 9 months later do you plan to have another WG last call, or a=
re<br>
you declaring consensus on the -13 document?<br>
<br>
Thanks,<br>
Adrian<br>
<br>
</blockquote>
<br>
______________________________<wbr>_________________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org" target=3D"_blank">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/sfc</a><br>
</div></div></blockquote></div><br></div>

--001a113c772029abb50553218e01--


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Subject: Re: [sfc] Status of draft-ietf-sfc-nsh [Was: Meeting at IETF 99 in Prague]
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The -13 will be out in a few days with all the changes.
That is what we will ask the WG to review.
If we already had it out, we would have already asked for the WG to take 
a last look.

Yours,
Joel

On 6/29/17 7:21 PM, Greg Mirsky wrote:
> Hi Joel,
> is the -12 the latest published version of the NSH draft? As I see, it 
> is missing TTL and all related changes:


From nobody Fri Jun 30 04:33:48 2017
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Subject: [sfc] I-D Action: draft-ietf-sfc-nsh-13.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Service Function Chaining of the IETF.

        Title           : Network Service Header
        Authors         : Paul Quinn
                          Uri Elzur
	Filename        : draft-ietf-sfc-nsh-13.txt
	Pages           : 37
	Date            : 2017-06-30

Abstract:
   This document describes a Network Service Header (NSH) inserted onto
   packets or frames to realize service function paths.  NSH also
   provides a mechanism for metadata exchange along the instantiated
   service path.  NSH is the SFC encapsulation required to support the
   Service Function Chaining (SFC) Architecture (defined in RFC7665).


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-sfc-nsh-13
https://datatracker.ietf.org/doc/html/draft-ietf-sfc-nsh-13

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-nsh-13


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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Service Function Chaining of the IETF.

        Title           : Hierarchical Service Function Chaining (hSFC)
        Authors         : David Dolson
                          Shunsuke Homma
                          Diego R. Lopez
                          Mohamed Boucadair
                          Dapeng Liu
                          Ting Ao
                          Vu Anh Vu
	Filename        : draft-ietf-sfc-hierarchical-03.txt
	Pages           : 26
	Date            : 2017-06-30

Abstract:
   Hierarchical Service Function Chaining (hSFC) is a network
   architecture allowing an organization to decompose a large-scale
   network into multiple domains of administration.

   The goals of hSFC are to make a large-scale network easier to reason
   about, simpler to control and to support independent functional
   groups within large network operators.


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From nobody Fri Jun 30 13:02:37 2017
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Thread-Topic: [sfc] I-D Action: draft-ietf-sfc-hierarchical-03.txt
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SFC WG,

This new version hopefully addresses some of the comments received on the l=
ist.
It also uses the new NSH header format, with some language about handling t=
he TTL in the sub-domains.
(I've written that whether to expose the hops of the sub-domain is administ=
rator choice.)

Hopefully my changes are acceptable to the working group.
I'm more than happy to discuss this with anyone.

I think the main outstanding issue is whether we should reduce the number o=
f options in sections 3.1.1 thru 3.1.5 be reduced?
On one hand, the start and end of sub-domain chains are within the purview =
of a single vendor.
On the other hand, 5 options is too many.

See you in Prague,
-Dave


-----Original Message-----
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rg
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Cc: sfc@ietf.org
Subject: [sfc] I-D Action: draft-ietf-sfc-hierarchical-03.txt


A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
This draft is a work item of the Service Function Chaining of the IETF.

        Title           : Hierarchical Service Function Chaining (hSFC)
        Authors         : David Dolson
                          Shunsuke Homma
                          Diego R. Lopez
                          Mohamed Boucadair
                          Dapeng Liu
                          Ting Ao
                          Vu Anh Vu
	Filename        : draft-ietf-sfc-hierarchical-03.txt
	Pages           : 26
	Date            : 2017-06-30

Abstract:
   Hierarchical Service Function Chaining (hSFC) is a network
   architecture allowing an organization to decompose a large-scale
   network into multiple domains of administration.

   The goals of hSFC are to make a large-scale network easier to reason
   about, simpler to control and to support independent functional
   groups within large network operators.


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-sfc-hierarchical-03
https://datatracker.ietf.org/doc/html/draft-ietf-sfc-hierarchical-03

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-hierarchical-03


Please note that it may take a couple of minutes from the time of submissio=
n until the htmlized version and diff are available at tools.ietf.org.

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

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