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From: The IESG <iesg-secretary@ietf.org>
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CC: db3546@att.com, agmalis@gmail.com, pals-chairs@ietf.org, Andrew Malis <agmalis@gmail.com>, pals@ietf.org, draft-ietf-pals-vpls-pim-snooping@ietf.org
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Date: Fri, 05 May 2017 08:34:33 -0700
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Subject: [Pals] Last Call: <draft-ietf-pals-vpls-pim-snooping-05.txt> (Protocol Independent Multicast (PIM) over Virtual Private LAN Service (VPLS)) to Informational RFC
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The IESG has received a request from the Pseudowire And LDP-enabled
Services WG (pals) to consider the following document:
- 'Protocol Independent Multicast (PIM) over Virtual Private LAN Service
   (VPLS)'
  <draft-ietf-pals-vpls-pim-snooping-05.txt> as Informational RFC

The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2017-05-19. Exceptionally, comments may be
sent to iesg@ietf.org instead. In either case, please retain the
beginning of the Subject line to allow automated sorting.

Abstract


   This document describes the procedures and recommendations for
   Virtual Private LAN Service (VPLS) Provider Edges (PEs) to facilitate
   replication of multicast traffic to only certain ports (behind which
   there are interested Protocol Independent Multicast (PIM) routers
   and/or Internet Group Management Protocol (IGMP) hosts) via Protocol
   Independent Multicast (PIM) snooping and proxying.

   With PIM snooping, PEs passively listen to certain PIM control
   messages to build control and forwarding states while transparently
   flooding those messages.  With PIM proxying, Provider Edges (PEs) do
   not flood PIM Join/Prune messages but only generate their own and
   send out of certain ports, based on the control states built from
   downstream Join/Prune messages.  PIM proxying is required when PIM
   Join suppression is enabled on the Customer Equipment (CE) devices
   and useful to reduce PIM control traffic in a VPLS domain.

   The document also describes PIM relay, which can be viewed as light-
   weight proxying, where all downstream Join/Prune messages are simply
   forwarded out of certain ports but not flooded to avoid triggering
   PIM Join suppression on CE devices.





The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-pals-vpls-pim-snooping/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-pals-vpls-pim-snooping/ballot/

The following IPR Declarations may be related to this I-D:

   https://datatracker.ietf.org/ipr/2366/






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From: "Patrice Brissette (pbrisset)" <pbrisset@cisco.com>
To: "draft-ietf-pals-p2mp-pw-02@ietf.org" <draft-ietf-pals-p2mp-pw-02@ietf.org>
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Thread-Topic: RtgDir review: draft-ietf-pals-p2mp-pw-02.txt
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To: Warren Kumari <warren@kumari.net>, The IESG <iesg@ietf.org>
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Cc: draft-ietf-pals-status-reduction@ietf.org, Stewart Bryant <stewart.bryant@gmail.com>, pals-chairs@ietf.org, pals@ietf.org, j.schoenwaelder@jacobs-university.de
From: Luca Martini <lmartini@monoski.com>
Organization: Monoski
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Date: Wed, 10 May 2017 18:52:42 -0600
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Subject: Re: [Pals] Warren Kumari's No Objection on draft-ietf-pals-status-reduction-04: (with COMMENT)
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Warren,
Thanks for the comment, I updated the document to remove all the extra |
as you mention.
To answer your question: We wanted an example algorithm that would work
in the document.

Luca

On 04/10/17 13:16, Warren Kumari wrote:
> Warren Kumari has entered the following ballot position for
> draft-ietf-pals-status-reduction-04: No Objection
>
> When responding, please keep the subject line intact and reply to all
> email addresses included in the To and CC lines. (Feel free to cut this
> introductory paragraph, however.)
>
>
> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
> for more information about IESG DISCUSS and COMMENT positions.
>
>
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-pals-status-reduction/
>
>
>
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> I agree with Benoit re: Jürgen's review.
>
> I was also quite confused by:
> " In order to get a locally unique session ID, the recommended choice is
> to perform a CRC-16 giving as input the following data
>        |Y|Y|M|M|D|D|H|H|M|M|S|S|L|L|L|
>
>        Where:  YY: are the decimal two last digit of the current year
>        MM: are the decimal two digit of the current month DD: are the
>        decimal two digit of the current day HHMMSSLLL: are the decimal
>        digits of the current time expressed in (hour, minutes, seconds,
>        milliseconds) ... Any other method to
>        generate a locally unique session ID is also acceptable."
>
> Is the pipe character intended to mean concatenation? Or is it just for
> formatting?
> If the former, why isn't this "YY|MM|DD|HHMMSSLLL" (or
> "YY|MM|DD|HH|MM|SS|LLL")?
> Is this just CRC-16 (170410124223001)? An example would help...
> Actually, this says that it is a "locally unique session ID" and that any
> other method is also acceptable, so why is any algorithm specified?
>
>


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From: Luca Martini <lmartini@monoski.com>
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Subject: Re: [Pals] Benoit Claise's No Objection on draft-ietf-pals-status-reduction-04: (with COMMENT)
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Benoit,
Comments inline
Thanks.
Luca

On 04/10/17 08:22, Benoit Claise wrote:
> Benoit Claise has entered the following ballot position for
> draft-ietf-pals-status-reduction-04: No Objection
>
> When responding, please keep the subject line intact and reply to all
> email addresses included in the To and CC lines. (Feel free to cut this
> introductory paragraph, however.)
>
>
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> for more information about IESG DISCUSS and COMMENT positions.
>
>
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-pals-status-reduction/
>
>
>
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> As mentioned by Jürgen in his OPS-DIR review:
>
> Section 1.2 is not really about terminology but instead it basically
> expands acronyms. The section does not define any terms or does it
> make it clear where terms are defined. A reader who does not know
> T-PE
> will not be pointed to a document that defines 'Terminating Provider
> Edge Node of MS-PW'. I usally find terminology sections more useful
> if
> they say where definitions of terms get be found.
>
> Section 3: s/the the/the/
>
> Section 4: What is the 'Version' field in the message format?
as the text says :  explained in [RFC5586]
> Section 4: There is an 8-bit field marked U C Flags and I _assume_
> the
> U and C bits are the 'first' two bits and the 'remaining bits are the
> flags managed by IANA. Perhaps make this clearer, e.g.:
>
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>    |  Last Received Seq Number     | Message Type  |U|C|   Flags   |
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
yes - the ascii art was incorrect.

> Or alternatively simply name the entire 8-bit flags field like you do
> in the text where you refer to Message Flags and then explain in the
> text under the 'Message Flags' that the first two bits have a fixed
> meaning.
>
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>    |  Last Received Seq Number     | Message Type  | Message Flags |
>    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
> This option carries less information but then you use 'Message Flags'
> in several places and you also request an IANA registry for Message
> Flags where the U and C bit are allocated. Looking at the IANA text,
> it says 'bit position' 0 and 1. Not sure this is clear enough, you
> seem to number bits in the order 0, 1, 2, ...
>
> It turns out we have several slightly different labels further down
> in
> the document for this flags field throughout the document - this
> makes
> searching in the text difficult, please use a single consistent name
> for this message field.
>
Yes! thanks for catching this. We suffer from multiple editor syndrome ;-)
> Section 8.2 says values 1 and 2 are defined in this document but then
> it seems value 3 is also allocated, no?
yes - fixed.
> Subsections of section 8 switches several times between decimal and
> hexadecimal numbers. Perhaps things get clearer if a single number
> system (e.g., hexadecimal) is used when talking about a specific
> registry. Numbers like 134,217,728 look somewhat confusing, 0x8000000
> seems simpler.
>
>
I would have kept it all in hexadecimal format , but somehow I think
someone asked for the text to be decimal.
IANA already processed this , so I would like to leave it as is.

Thanks.
Luca


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From: "Patrice Brissette (pbrisset)" <pbrisset@cisco.com>
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Thread-Topic: RtgDir review: draft-ietf-pals-p2mp-pw-02.txt
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--_000_D0BAABDE58B64343AFA8674DF294BA29ciscocom_--


From nobody Wed May 10 18:15:37 2017
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From: Min Ye <amy.yemin@huawei.com>
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Subject: [Pals] Rtgdir last call review of draft-ietf-pals-p2mp-pw-02
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Reviewer: Patrice Brissette
Review result: Has Issues

[Resending to RTG-DIR]

Hello, 
I have been selected as the Routing Directorate reviewer for this
draft. The Routing Directorate seeks to review all routing or
routing-related drafts as they pass through IETF last call and IESG
review, and sometimes on special request. The purpose of the review is
to provide assistance to the Routing ADs. For more information about
the Routing Directorate, please see
http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir 
Although these comments are primarily for the use of the Routing ADs,
it would be helpful if you could consider them along with any other
IETF Last Call comments that you receive, and strive to resolve them
through discussion or by updating the draft. 
 
Document: draft-ietf-pals-p2mp-pw-02.txt
Reviewer: Patrice Brissette
Review Date: May 10, 2017
IETF LC End Date: May 12, 2017
Intended Status: Standard Track 
Summary: 
•	I have some minor concerns about this document that I think should
be resolved before publication. 
 
Comments: 
•	Please supply an overview of the draft quality and readability. 
•	Include anything else that you think will be helpful toward
understanding your review. 
Major Issues: 
•	"No major issues found." 
Minor Issues:
•	Technically, I think the draft is completed. However, it doesn’t
flow very well. Information is all over. I suggest the authors to
review the layout/flow of the document. 
 
Here are my “detailed” comments:
 
Abstract — What is the plus value on that draft? No clear
 
Many Long sentences in the text. very hard to understand and follow.
Syntax to be improved.
 
Introduction
Typo : “A reference model or a P2MP PW is depicted in Figure 1 below”
 
“In this document, we specify a method of signaling P2MP
   PW using LDP.” —> suggest to move it from intro to abstract 
 
Also, make sure the 3rd person is used. Try to a void “we” usage
 
May I suggest to have a requirement section. Requirements are all over
the document.
 
“   In case of mLDP, a Leaf-PE can decide to join the P2MP LSP at any
   time; whereas in the case of RSVP-TE, the P2MP LSP is set up by
the
   R-PE, generally at the initial service provisioning time. It
should
   be noted that local policy can override any decision to join, add
or
   prune existing or new L-PE(s) from the tree. In any case, the PW
   setup can ignore these differences, and simply assume that the
P2MP
   PSN LSP is available when needed
“
Quite complex to follow. Missing to “why” / explanation.
 
“The LDP liberal label retention mode is used“
Another requirement… is that a MAY, SHOULD, MUST?
 
“In this case, a PW status message with status
   code of 0x00000008 (Local PSN-facing PW (ingress) Receive Fault)
MUST
   also be sent to the R-PE“ 
How? The L-PE fails to join the P2MP PSN LSP.
 
Section 2.2
“   Note that since the LDP label mapping message is only sent by the
R-
   PE to all the L-PEs, it is not possible to negotiate any interface
   parameters.“
Why is that note there? Is that already been mentioned previously.
Fig.4 must  be moved to proper in the text OR create 2 subsection in
2.2
 
“As such, PW status negotiation procedure
   described in [RFC4447bis] is not applicable to P2MP PW. A node
MUST
   NOT claim to be  P2MP PW capable by sending a LDP P2MP PW
Capability
   TLV  if it is not also capable of handling PW status“
 
Should a node send LDP P2MP PW Capability TLV or not? Not well explain

 
There is some reference to LSR in the text where the major part use
the wording “node”.
 
Nits: 
N/A
 
Regards,
Patrice Brissette





From nobody Wed May 10 20:40:03 2017
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From: Carlos Pignataro <cpignata@cisco.com>
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Reviewer: Carlos Pignataro
Review result: Has Nits

This is a well written, and comprehensive document.

Only a couple of nits, for the authors consideration:

* In some places, the text uses "Pim" instead of "PIM"
* The Appendices are a bit abruptly integrated. A better description
of what Appendix A is, maybe even a more descriptive title, and the
normative-level of the Appendices would help (even for an
Informational document.)

Thanks,

-- Carlos.


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From: Warren Kumari <warren@kumari.net>
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Okey dokey.

Thanks, works for me.

W

On Thu, May 11, 2017, 2:52 AM Luca Martini <lmartini@monoski.com> wrote:

> Warren,
> Thanks for the comment, I updated the document to remove all the extra |
> as you mention.
> To answer your question: We wanted an example algorithm that would work
> in the document.
>
> Luca
>
> On 04/10/17 13:16, Warren Kumari wrote:
> > Warren Kumari has entered the following ballot position for
> > draft-ietf-pals-status-reduction-04: No Objection
> >
> > When responding, please keep the subject line intact and reply to all
> > email addresses included in the To and CC lines. (Feel free to cut this
> > introductory paragraph, however.)
> >
> >
> > Please refer to
> https://www.ietf.org/iesg/statement/discuss-criteria.html
> > for more information about IESG DISCUSS and COMMENT positions.
> >
> >
> > The document, along with other ballot positions, can be found here:
> > https://datatracker.ietf.org/doc/draft-ietf-pals-status-reduction/
> >
> >
> >
> > ----------------------------------------------------------------------
> > COMMENT:
> > ----------------------------------------------------------------------
> >
> > I agree with Benoit re: J=C3=BCrgen's review.
> >
> > I was also quite confused by:
> > " In order to get a locally unique session ID, the recommended choice i=
s
> > to perform a CRC-16 giving as input the following data
> >        |Y|Y|M|M|D|D|H|H|M|M|S|S|L|L|L|
> >
> >        Where:  YY: are the decimal two last digit of the current year
> >        MM: are the decimal two digit of the current month DD: are the
> >        decimal two digit of the current day HHMMSSLLL: are the decimal
> >        digits of the current time expressed in (hour, minutes, seconds,
> >        milliseconds) ... Any other method to
> >        generate a locally unique session ID is also acceptable."
> >
> > Is the pipe character intended to mean concatenation? Or is it just for
> > formatting?
> > If the former, why isn't this "YY|MM|DD|HHMMSSLLL" (or
> > "YY|MM|DD|HH|MM|SS|LLL")?
> > Is this just CRC-16 (170410124223001)? An example would help...
> > Actually, this says that it is a "locally unique session ID" and that a=
ny
> > other method is also acceptable, so why is any algorithm specified?
> >
> >
>
>

--f403045e23a868577b054f3b2e66
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<p dir=3D"ltr">Okey dokey.</p>
<p dir=3D"ltr">Thanks, works for me. </p>
<p dir=3D"ltr">W</p>
<br><div class=3D"gmail_quote"><div dir=3D"ltr">On Thu, May 11, 2017, 2:52 =
AM Luca Martini &lt;<a href=3D"mailto:lmartini@monoski.com">lmartini@monosk=
i.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Warren,<br>
Thanks for the comment, I updated the document to remove all the extra |<br=
>
as you mention.<br>
To answer your question: We wanted an example algorithm that would work<br>
in the document.<br>
<br>
Luca<br>
<br>
On 04/10/17 13:16, Warren Kumari wrote:<br>
&gt; Warren Kumari has entered the following ballot position for<br>
&gt; draft-ietf-pals-status-reduction-04: No Objection<br>
&gt;<br>
&gt; When responding, please keep the subject line intact and reply to all<=
br>
&gt; email addresses included in the To and CC lines. (Feel free to cut thi=
s<br>
&gt; introductory paragraph, however.)<br>
&gt;<br>
&gt;<br>
&gt; Please refer to <a href=3D"https://www.ietf.org/iesg/statement/discuss=
-criteria.html" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/i=
esg/statement/discuss-criteria.html</a><br>
&gt; for more information about IESG DISCUSS and COMMENT positions.<br>
&gt;<br>
&gt;<br>
&gt; The document, along with other ballot positions, can be found here:<br=
>
&gt; <a href=3D"https://datatracker.ietf.org/doc/draft-ietf-pals-status-red=
uction/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/=
doc/draft-ietf-pals-status-reduction/</a><br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt; ----------------------------------------------------------------------=
<br>
&gt; COMMENT:<br>
&gt; ----------------------------------------------------------------------=
<br>
&gt;<br>
&gt; I agree with Benoit re: J=C3=BCrgen&#39;s review.<br>
&gt;<br>
&gt; I was also quite confused by:<br>
&gt; &quot; In order to get a locally unique session ID, the recommended ch=
oice is<br>
&gt; to perform a CRC-16 giving as input the following data<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 |Y|Y|M|M|D|D|H|H|M|M|S|S|L|L|L|<br>
&gt;<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 Where:=C2=A0 YY: are the decimal two last d=
igit of the current year<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 MM: are the decimal two digit of the curren=
t month DD: are the<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 decimal two digit of the current day HHMMSS=
LLL: are the decimal<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 digits of the current time expressed in (ho=
ur, minutes, seconds,<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 milliseconds) ... Any other method to<br>
&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 generate a locally unique session ID is als=
o acceptable.&quot;<br>
&gt;<br>
&gt; Is the pipe character intended to mean concatenation? Or is it just fo=
r<br>
&gt; formatting?<br>
&gt; If the former, why isn&#39;t this &quot;YY|MM|DD|HHMMSSLLL&quot; (or<b=
r>
&gt; &quot;YY|MM|DD|HH|MM|SS|LLL&quot;)?<br>
&gt; Is this just CRC-16 (170410124223001)? An example would help...<br>
&gt; Actually, this says that it is a &quot;locally unique session ID&quot;=
 and that any<br>
&gt; other method is also acceptable, so why is any algorithm specified?<br=
>
&gt;<br>
&gt;<br>
<br>
</blockquote></div>

--f403045e23a868577b054f3b2e66--


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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 Pseudowire And LDP-enabled Services of the IETF.

        Title           : MPLS LSP PW status refresh reduction for Static Pseudowires
        Authors         : Luca Martini
                          George Swallow
                          Elisa Bellagamba
	Filename        : draft-ietf-pals-status-reduction-05.txt
	Pages           : 19
	Date            : 2017-05-10

Abstract:
   This document describes a method for generating an aggregated
   pseudowire status message transmitted for a statically configured
   pseudowire on a Multi-Protocol Label Switching (MPLS) Label Switched
   Path (LSP) to indicate the status of one or more pseudowires carried
   on the LSP.

   The method for transmitting the pseudowire (PW) status information is
   not new, however this protocol extension allows a Service Provider
   (SP) to reliably monitor the individual PW status while not
   overwhelming the network with multiple periodic status messages. This
   is achieved by sending a single cumulative summary status
   verification message for all the PWs grouped in the same LSP.




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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-pals-status-reduction-05
https://datatracker.ietf.org/doc/html/draft-ietf-pals-status-reduction-05

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-pals-status-reduction-05


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.

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Reviewer: Russ Housley
Review result: Has Nits

I reviewed this document as part of the Security Directorate's
ongoing
effort to review all IETF documents being processed by the IESG. 
These
comments were written primarily for the benefit of the Security Area
Directors.  Document authors, document editors, and WG chairs should
treat these comments just like any other IETF Last Call comments.

Document: draft-ietf-pals-vpls-pim-snooping-05
Reviewer: Russ Housley
Review Date: 2016-05-11
IETF LC End Date: 2017-05-19
IESG Telechat date: Unknown

Summary: Has Nits

I did not review the state machines in detail.  I assume that others
that are far more familiar with PIM have done s detailed review of
them.


No Major Concerns


Minor Concerns

Section 1 says:

   In that case, the PW related concept/procedures are not
   applicable and that's all.

I am not sure what you are trying to tell the implementer.
Please clarify.

Section 1.3 includes: "rpt : Rendezvous Point", and Section 2.3
includes: "Rendezvous Points (RP)".  Please pick one and use it
throughout.

In Section 2.2, please add a reference for the "split-horizon rule
for mesh PWs" or add a pointer to the section where it is discussed
further in this document.

A better heading for Section 2.3.2 would be "IPv4 and IPv6".


Nits

Please change the language that makes reference to other "draft",
such
as: "As stated in the VPLS Multicast Requirements draft ...".  This
wording leads to changes by the RFC Editor, so it is better to use a
word like "document".

Please change "J/P messages" to "Join/Prune messages" throughout the
document.

The document uses both "learned" and "learnt".  If there is a
difference
to the reader, it was too subtle for me to figure out.  If they are
the
same, please pick one.

In Section 1.1, rewording would add clarity:

   Depending on how the control messages are handled
   (transparently flooded, selectively forwarded, aggregated), the
   procedure/process may be called Snooping or proxy in different
   contexts.

I suggest:

   Depending on whether the control messages are
   transparently flooded, selectively forwarded, or aggregated, the
   processing may be called Snooping or proxy in different contexts.

Section 2.3 says:

   However, the PE does not need to have any routing tables like as
   required in PIM multicast routing.

Please correct.  I think you are trying to say:

   However, the PE does not need any routing tables like those
   required in PIM multicast routing.

Section 4.2.1 says:

   Note that the differences apply only to PIM Join/Prune messages. 
PIM
   Hello messages are snooped and flooded in all cases.

Wouldn't it be more clear to consume the same number of lines and add
this information to the table.

In Section 2.7 the document uses PIM-BIDIR and BIDIR-PIM, and they
seem
have the same meaning.  Please pick one.



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A new meeting session request has just been submitted by Stewart Bryant, a Chair of the pals working group.


---------------------------------------------------------
Working Group Name: Pseudowire And LDP-enabled Services
Area Name: Routing Area
Session Requester: Stewart Bryant

Number of Sessions: 1
Length of Session(s):  1 Hour
Number of Attendees: 80
Conflicts to Avoid: 
 First Priority:  mpls detnet nvo3 opsawg spring rtgwg




People who must be present:
  Stewart Bryant
  Andrew G. Malis
  Deborah Brungard

Resources Requested:

Special Requests:
  Please avoid any of the 5G related BOFs if they are approved : netslices, 5ganip, ideas
---------------------------------------------------------


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Reviewer: Brian Carpenter
Review result: Ready with Issues

Gen-ART Last Call review of draft-ietf-pals-vpls-pim-snooping-05

I am the assigned Gen-ART reviewer for this draft. The General Area
Review Team (Gen-ART) reviews all IETF documents being processed
by the IESG for the IETF Chair.  Please treat these comments just
like any other last call comments.

For more information, please see the FAQ at
<http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq>.

Document: draft-ietf-pals-vpls-pim-snooping-05.txt
Reviewer: Brian Carpenter
Review Date: 2017-05-15
IETF LC End Date: 2017-05-19
IESG Telechat date: 2017-05-25

Summary: Ready with issues
--------

Comment:
--------

"This document isn't defining a new protocol, but rather methods to
optimize the use of PIM-based multicast in a VPLS environment."
[Shepherd's writeup] Also, the document uses RFC2119 terminology.

So why not BCP?

Major issue: 
------------

> 2.11.  Directly Connected Multicast Source
...
>   o  The PE would have to do ARP snooping to determine if a source
is
>      directly connected.

What about IPv6? It may be sufficient to add Neighbor Discovery
snooping,
but you need to say something.

Nits:
-----

> 1.  Introduction
...
>    o  B.  Replication on PWs on shared physical path.

I realise this is declared out of scope a few lines later, but
it's very "telegraphic" and hard to understand. I think you mean

o  B. Multicast traffic may be replicated when several PWs share a
physical path.

...
>   While this document is in the context of VPLS, the procedures
apply
>   to regular layer-2 switches interconnected by physical connections
as
>   well, albeit this is outside of the scope of this document.  In
that
>   case, the PW related concept/procedures are not applicable and
that's
>   all.

That is rather unclear. How about:

  While this document is written in the context of VPLS, the
procedures
  also apply to regular layer-2 switches interconnected by physical
  connections, except that the PW related concept and procedures do
not
  apply in the case.

> 2.2.  General Rules for PIM Snooping in VPLS

BPDU is used but not defined.

> 2.2.1.  Preserving Assert Trigger
>
>   In PIM-SM/DM, there are scenarios where multiple routers could be
>   forwarding the same multicast traffic on a LAN.  When this
happens,
>   using PIM Assert election process by sending PIM Assert messages,
>   routers ensure that only the Assert winner forwards traffic on
the
>   LAN.

Either I have misunderstood the intention, or the second sentence is
written half backwards. I *think* you mean

   In PIM-SM/DM, there are scenarios where multiple routers could be
   forwarding the same multicast traffic on a LAN.  When this
happens,
   these routers start the PIM Assert election process by sending PIM
   Assert messages, to ensure that only the Assert winner forwards
   future multicast traffic on the LAN.

> 2.3.2.  IPv6

What's so special about IPv6, or why isn't this section titled
"IPv4"?
Or better, stay neutral:

2.3.2.  IP Versions

> 2.3.3.  PIM-SM (*,*,RP)
>
>   This document does not address (*,*,RP) states in the VPLS
network.
>   Although [PIM-SM] specifies that routers must support (*,*,RP)
>   states, there are very few implementations that actually support
it
>   in actual deployments, and it is being removed from the PIM
protocol
>   in its ongoing advancement process in IETF.  Given that, this
>   document omits the specification relating to (*,*,RP) support.

If I understand things correctly, you should say 

...  it has been removed from the PIM protocol [RFC7761].

> 2.4.3.  When to Snoop and When to Proxy
...
>   Therefore, the general rule is that if Join Suppression is enabled
on
>   CEs then proxying or relay MUST be used and if Suppression is
known
>   to be disabled on all CEs then either snooping, relay, or
proxying
>   MAY be used while snooping or relay SHOULD be used.

I had to read this a few times. I think you mean

   Therefore, the general rule is that if Join Suppression is enabled
on
   one or more CEs then proxying or relay MUST be used, but if
Suppression is known
   to be disabled on all CEs then either snooping, relay, or proxying
   MAY be used while snooping or relay SHOULD be used.

(as I understand it, even one CE with Join Suppression breaks snooping
for
the whole PE.)

> 7.  References
 
As an RFC user, I find references like [IGMP-SNOOP] instead of
[RFC4541]
quite impractical. It wastes bits to use constructs like "RFC4541
[IGMP-SNOOP]",
which the RFC Editor will change to "RFC 4541 [IGMP-SNOOP]".





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From: Sami Boutros <sboutros@vmware.com>
To: Min Ye <amy.yemin@huawei.com>, "rtg-dir@ietf.org" <rtg-dir@ietf.org>, "Patrice Brissette (pbrisset)" <pbrisset@cisco.com>
CC: "draft-ietf-pals-p2mp-pw.all@ietf.org" <draft-ietf-pals-p2mp-pw.all@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>, "pals@ietf.org" <pals@ietf.org>
Thread-Topic: Rtgdir last call review of draft-ietf-pals-p2mp-pw-02
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Date: Mon, 15 May 2017 01:52:57 +0000
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Subject: Re: [Pals] Rtgdir last call review of draft-ietf-pals-p2mp-pw-02
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From: "\"IETF Meeting Session Request Tool\"" <session_request_developers@ietf.org>
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Cc: pals-chairs@ietf.org, stewart@g3ysx.org.uk, db3546@att.com, pals@ietf.org
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Date: Mon, 15 May 2017 03:50:18 -0700
Archived-At: <https://mailarchive.ietf.org/arch/msg/pals/148aQhVYCCIXCF1btcYWRXkX7DQ>
Subject: [Pals] pals - Update to a Meeting Session Request for IETF 99
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An update to a meeting session request has just been submitted by Stewart Bryant, a Chair of the pals working group.


---------------------------------------------------------
Working Group Name: Pseudowire And LDP-enabled Services
Area Name: Routing Area
Session Requester: Stewart Bryant

Number of Sessions: 1
Length of Session(s):  1 Hour
Number of Attendees: 80
Conflicts to Avoid: 
 First Priority: mpls detnet nvo3 opsawg spring rtgwg ccamp rtgarea




People who must be present:
  Stewart Bryant
  Andrew G. Malis
  Deborah Brungard

Resources Requested:

Special Requests:
  Please avoid any of the 5G related BOFs if they are approved : netslices, 5ganip, ideas
---------------------------------------------------------


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From: "Patrice Brissette (pbrisset)" <pbrisset@cisco.com>
To: Sami Boutros <sboutros@vmware.com>, Min Ye <amy.yemin@huawei.com>, "rtg-dir@ietf.org" <rtg-dir@ietf.org>
CC: "draft-ietf-pals-p2mp-pw.all@ietf.org" <draft-ietf-pals-p2mp-pw.all@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>, "pals@ietf.org" <pals@ietf.org>
Thread-Topic: Rtgdir last call review of draft-ietf-pals-p2mp-pw-02
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Date: Mon, 15 May 2017 16:02:51 +0000
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Subject: Re: [Pals] Rtgdir last call review of draft-ietf-pals-p2mp-pw-02
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From: "Andrew G. Malis" <agmalis@gmail.com>
Date: Tue, 16 May 2017 14:33:25 +0800
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To: Carlos Pignataro <cpignata@cisco.com>
Cc: ops-dir@ietf.org, draft-ietf-pals-vpls-pim-snooping.all@ietf.org,  IESG <iesg@ietf.org>, "pals@ietf.org" <pals@ietf.org>
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Subject: Re: [Pals] Opsdir last call review of draft-ietf-pals-vpls-pim-snooping-05
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Carlos,

Thanks for your review!

Cheers,
Andy

On Thu, May 11, 2017 at 11:39 AM, Carlos Pignataro <cpignata@cisco.com>
wrote:

> Reviewer: Carlos Pignataro
> Review result: Has Nits
>
> This is a well written, and comprehensive document.
>
> Only a couple of nits, for the authors consideration:
>
> * In some places, the text uses "Pim" instead of "PIM"
> * The Appendices are a bit abruptly integrated. A better description
> of what Appendix A is, maybe even a more descriptive title, and the
> normative-level of the Appendices would help (even for an
> Informational document.)
>
> Thanks,
>
> -- Carlos.
>
>

--001a113de42282507b054f9e5a51
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<div dir=3D"ltr">Carlos,<div><br></div><div>Thanks for your review!</div><d=
iv><br></div><div>Cheers,</div><div>Andy</div></div><div class=3D"gmail_ext=
ra"><br><div class=3D"gmail_quote">On Thu, May 11, 2017 at 11:39 AM, Carlos=
 Pignataro <span dir=3D"ltr">&lt;<a href=3D"mailto:cpignata@cisco.com" targ=
et=3D"_blank">cpignata@cisco.com</a>&gt;</span> wrote:<br><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">Reviewer: Carlos Pignataro<br>
Review result: Has Nits<br>
<br>
This is a well written, and comprehensive document.<br>
<br>
Only a couple of nits, for the authors consideration:<br>
<br>
* In some places, the text uses &quot;Pim&quot; instead of &quot;PIM&quot;<=
br>
* The Appendices are a bit abruptly integrated. A better description<br>
of what Appendix A is, maybe even a more descriptive title, and the<br>
normative-level of the Appendices would help (even for an<br>
Informational document.)<br>
<br>
Thanks,<br>
<br>
-- Carlos.<br>
<br>
</blockquote></div><br></div>

--001a113de42282507b054f9e5a51--


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From: "Andrew G. Malis" <agmalis@gmail.com>
Date: Tue, 16 May 2017 14:33:46 +0800
Message-ID: <CAA=duU2ZnMTSR-Rcsm+7XEE_xBWrnUVMOg=4RhpFfvde6M+CvA@mail.gmail.com>
To: Russ Housley <housley@vigilsec.com>
Cc: secdir@ietf.org, draft-ietf-pals-vpls-pim-snooping.all@ietf.org,  IETF Discussion <ietf@ietf.org>, "pals@ietf.org" <pals@ietf.org>
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Subject: Re: [Pals] Secdir last call review of draft-ietf-pals-vpls-pim-snooping-05
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Russ,

Thanks for your review!

Cheers,
Andy

On Fri, May 12, 2017 at 6:33 AM, Russ Housley <housley@vigilsec.com> wrote:

> Reviewer: Russ Housley
> Review result: Has Nits
>
> I reviewed this document as part of the Security Directorate's
> ongoing
> effort to review all IETF documents being processed by the IESG.
> These
> comments were written primarily for the benefit of the Security Area
> Directors.  Document authors, document editors, and WG chairs should
> treat these comments just like any other IETF Last Call comments.
>
> Document: draft-ietf-pals-vpls-pim-snooping-05
> Reviewer: Russ Housley
> Review Date: 2016-05-11
> IETF LC End Date: 2017-05-19
> IESG Telechat date: Unknown
>
> Summary: Has Nits
>
> I did not review the state machines in detail.  I assume that others
> that are far more familiar with PIM have done s detailed review of
> them.
>
>
> No Major Concerns
>
>
> Minor Concerns
>
> Section 1 says:
>
>    In that case, the PW related concept/procedures are not
>    applicable and that's all.
>
> I am not sure what you are trying to tell the implementer.
> Please clarify.
>
> Section 1.3 includes: "rpt : Rendezvous Point", and Section 2.3
> includes: "Rendezvous Points (RP)".  Please pick one and use it
> throughout.
>
> In Section 2.2, please add a reference for the "split-horizon rule
> for mesh PWs" or add a pointer to the section where it is discussed
> further in this document.
>
> A better heading for Section 2.3.2 would be "IPv4 and IPv6".
>
>
> Nits
>
> Please change the language that makes reference to other "draft",
> such
> as: "As stated in the VPLS Multicast Requirements draft ...".  This
> wording leads to changes by the RFC Editor, so it is better to use a
> word like "document".
>
> Please change "J/P messages" to "Join/Prune messages" throughout the
> document.
>
> The document uses both "learned" and "learnt".  If there is a
> difference
> to the reader, it was too subtle for me to figure out.  If they are
> the
> same, please pick one.
>
> In Section 1.1, rewording would add clarity:
>
>    Depending on how the control messages are handled
>    (transparently flooded, selectively forwarded, aggregated), the
>    procedure/process may be called Snooping or proxy in different
>    contexts.
>
> I suggest:
>
>    Depending on whether the control messages are
>    transparently flooded, selectively forwarded, or aggregated, the
>    processing may be called Snooping or proxy in different contexts.
>
> Section 2.3 says:
>
>    However, the PE does not need to have any routing tables like as
>    required in PIM multicast routing.
>
> Please correct.  I think you are trying to say:
>
>    However, the PE does not need any routing tables like those
>    required in PIM multicast routing.
>
> Section 4.2.1 says:
>
>    Note that the differences apply only to PIM Join/Prune messages.
> PIM
>    Hello messages are snooped and flooded in all cases.
>
> Wouldn't it be more clear to consume the same number of lines and add
> this information to the table.
>
> In Section 2.7 the document uses PIM-BIDIR and BIDIR-PIM, and they
> seem
> have the same meaning.  Please pick one.
>
>
>

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<div dir=3D"ltr">Russ,<div><br></div><div>Thanks for your review!</div><div=
><br></div><div>Cheers,</div><div>Andy</div></div><div class=3D"gmail_extra=
"><br><div class=3D"gmail_quote">On Fri, May 12, 2017 at 6:33 AM, Russ Hous=
ley <span dir=3D"ltr">&lt;<a href=3D"mailto:housley@vigilsec.com" target=3D=
"_blank">housley@vigilsec.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">Reviewer: Russ Housley<br>
Review result: Has Nits<br>
<br>
I reviewed this document as part of the Security Directorate&#39;s<br>
ongoing<br>
effort to review all IETF documents being processed by the IESG.<br>
These<br>
comments were written primarily for the benefit of the Security Area<br>
Directors.=C2=A0 Document authors, document editors, and WG chairs should<b=
r>
treat these comments just like any other IETF Last Call comments.<br>
<br>
Document: draft-ietf-pals-vpls-pim-<wbr>snooping-05<br>
Reviewer: Russ Housley<br>
Review Date: 2016-05-11<br>
IETF LC End Date: 2017-05-19<br>
IESG Telechat date: Unknown<br>
<br>
Summary: Has Nits<br>
<br>
I did not review the state machines in detail.=C2=A0 I assume that others<b=
r>
that are far more familiar with PIM have done s detailed review of<br>
them.<br>
<br>
<br>
No Major Concerns<br>
<br>
<br>
Minor Concerns<br>
<br>
Section 1 says:<br>
<br>
=C2=A0 =C2=A0In that case, the PW related concept/procedures are not<br>
=C2=A0 =C2=A0applicable and that&#39;s all.<br>
<br>
I am not sure what you are trying to tell the implementer.<br>
Please clarify.<br>
<br>
Section 1.3 includes: &quot;rpt : Rendezvous Point&quot;, and Section 2.3<b=
r>
includes: &quot;Rendezvous Points (RP)&quot;.=C2=A0 Please pick one and use=
 it<br>
throughout.<br>
<br>
In Section 2.2, please add a reference for the &quot;split-horizon rule<br>
for mesh PWs&quot; or add a pointer to the section where it is discussed<br=
>
further in this document.<br>
<br>
A better heading for Section 2.3.2 would be &quot;IPv4 and IPv6&quot;.<br>
<br>
<br>
Nits<br>
<br>
Please change the language that makes reference to other &quot;draft&quot;,=
<br>
such<br>
as: &quot;As stated in the VPLS Multicast Requirements draft ...&quot;.=C2=
=A0 This<br>
wording leads to changes by the RFC Editor, so it is better to use a<br>
word like &quot;document&quot;.<br>
<br>
Please change &quot;J/P messages&quot; to &quot;Join/Prune messages&quot; t=
hroughout the<br>
document.<br>
<br>
The document uses both &quot;learned&quot; and &quot;learnt&quot;.=C2=A0 If=
 there is a<br>
difference<br>
to the reader, it was too subtle for me to figure out.=C2=A0 If they are<br=
>
the<br>
same, please pick one.<br>
<br>
In Section 1.1, rewording would add clarity:<br>
<br>
=C2=A0 =C2=A0Depending on how the control messages are handled<br>
=C2=A0 =C2=A0(transparently flooded, selectively forwarded, aggregated), th=
e<br>
=C2=A0 =C2=A0procedure/process may be called Snooping or proxy in different=
<br>
=C2=A0 =C2=A0contexts.<br>
<br>
I suggest:<br>
<br>
=C2=A0 =C2=A0Depending on whether the control messages are<br>
=C2=A0 =C2=A0transparently flooded, selectively forwarded, or aggregated, t=
he<br>
=C2=A0 =C2=A0processing may be called Snooping or proxy in different contex=
ts.<br>
<br>
Section 2.3 says:<br>
<br>
=C2=A0 =C2=A0However, the PE does not need to have any routing tables like =
as<br>
=C2=A0 =C2=A0required in PIM multicast routing.<br>
<br>
Please correct.=C2=A0 I think you are trying to say:<br>
<br>
=C2=A0 =C2=A0However, the PE does not need any routing tables like those<br=
>
=C2=A0 =C2=A0required in PIM multicast routing.<br>
<br>
Section 4.2.1 says:<br>
<br>
=C2=A0 =C2=A0Note that the differences apply only to PIM Join/Prune message=
s.<br>
PIM<br>
=C2=A0 =C2=A0Hello messages are snooped and flooded in all cases.<br>
<br>
Wouldn&#39;t it be more clear to consume the same number of lines and add<b=
r>
this information to the table.<br>
<br>
In Section 2.7 the document uses PIM-BIDIR and BIDIR-PIM, and they<br>
seem<br>
have the same meaning.=C2=A0 Please pick one.<br>
<br>
<br>
</blockquote></div><br></div>

--001a11c17d42c60417054f9e5b66--


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From: "Patrice Brissette (pbrisset)" <pbrisset@cisco.com>
To: Sami Boutros <sboutros@vmware.com>, Min Ye <amy.yemin@huawei.com>, "rtg-dir@ietf.org" <rtg-dir@ietf.org>
CC: "draft-ietf-pals-p2mp-pw.all@ietf.org" <draft-ietf-pals-p2mp-pw.all@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>, "pals@ietf.org" <pals@ietf.org>
Thread-Topic: Rtgdir last call review of draft-ietf-pals-p2mp-pw-02
Thread-Index: AQHSzZS0GfuQJeqMNUWBoX3pZMCpIw==
Date: Thu, 18 May 2017 19:44:22 +0000
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References: <149446531632.16715.2861233468294466753@ietfa.amsl.com> <89E173B8-3C03-4B4A-A405-F0442B983D7F@vmware.com> <B220B877-8FC1-4296-925A-2580DD3C796F@cisco.com> <A6B8B7CD-9E63-4800-9DC0-E8DAA67C6FE0@vmware.com>
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Subject: Re: [Pals] Rtgdir last call review of draft-ietf-pals-p2mp-pw-02
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Archived-At: <https://mailarchive.ietf.org/arch/msg/pals/841f5YyFANiKRj2kyU2PZcG6r84>
Subject: Re: [Pals] Secdir last call review of draft-ietf-pals-vpls-pim-snooping-05
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Russ,

Thanks for the review, I found all of your comments to be legitimate.

I'll upload an updated version in the coming days.

Thanks again,
Olivier.

On 05/12/2017 12:33 AM, Russ Housley wrote:
> Reviewer: Russ Housley
> Review result: Has Nits
>
> I reviewed this document as part of the Security Directorate's
> ongoing
> effort to review all IETF documents being processed by the IESG.
> These
> comments were written primarily for the benefit of the Security Area
> Directors.  Document authors, document editors, and WG chairs should
> treat these comments just like any other IETF Last Call comments.
>
> Document: draft-ietf-pals-vpls-pim-snooping-05
> Reviewer: Russ Housley
> Review Date: 2016-05-11
> IETF LC End Date: 2017-05-19
> IESG Telechat date: Unknown
>
> Summary: Has Nits
>
> I did not review the state machines in detail.  I assume that others
> that are far more familiar with PIM have done s detailed review of
> them.
>
>
> No Major Concerns
>
>
> Minor Concerns
>
> Section 1 says:
>
>     In that case, the PW related concept/procedures are not
>     applicable and that's all.
>
> I am not sure what you are trying to tell the implementer.
> Please clarify.
>
> Section 1.3 includes: "rpt : Rendezvous Point", and Section 2.3
> includes: "Rendezvous Points (RP)".  Please pick one and use it
> throughout.
>
> In Section 2.2, please add a reference for the "split-horizon rule
> for mesh PWs" or add a pointer to the section where it is discussed
> further in this document.
>
> A better heading for Section 2.3.2 would be "IPv4 and IPv6".
>
>
> Nits
>
> Please change the language that makes reference to other "draft",
> such
> as: "As stated in the VPLS Multicast Requirements draft ...".  This
> wording leads to changes by the RFC Editor, so it is better to use a
> word like "document".
>
> Please change "J/P messages" to "Join/Prune messages" throughout the
> document.
>
> The document uses both "learned" and "learnt".  If there is a
> difference
> to the reader, it was too subtle for me to figure out.  If they are
> the
> same, please pick one.
>
> In Section 1.1, rewording would add clarity:
>
>     Depending on how the control messages are handled
>     (transparently flooded, selectively forwarded, aggregated), the
>     procedure/process may be called Snooping or proxy in different
>     contexts.
>
> I suggest:
>
>     Depending on whether the control messages are
>     transparently flooded, selectively forwarded, or aggregated, the
>     processing may be called Snooping or proxy in different contexts.
>
> Section 2.3 says:
>
>     However, the PE does not need to have any routing tables like as
>     required in PIM multicast routing.
>
> Please correct.  I think you are trying to say:
>
>     However, the PE does not need any routing tables like those
>     required in PIM multicast routing.
>
> Section 4.2.1 says:
>
>     Note that the differences apply only to PIM Join/Prune messages.
> PIM
>     Hello messages are snooped and flooded in all cases.
>
> Wouldn't it be more clear to consume the same number of lines and add
> this information to the table.
>
> In Section 2.7 the document uses PIM-BIDIR and BIDIR-PIM, and they
> seem
> have the same meaning.  Please pick one.
>
>


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To: Brian Carpenter <brian.e.carpenter@gmail.com>, <gen-art@ietf.org>
CC: <draft-ietf-pals-vpls-pim-snooping.all@ietf.org>, <pals@ietf.org>
References: <149481261662.2891.9099796768977507841@ietfa.amsl.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/pals/QZ1NV85gYTZlHd8y5VUHsRtlGhE>
Subject: Re: [Pals] Genart last call review of draft-ietf-pals-vpls-pim-snooping-05
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X-List-Received-Date: Mon, 22 May 2017 07:50:33 -0000

Brian,

Thank you for the thorough review.

I agree on all your comments, the changes will be included in the next 
version.

Thanks,
Olivier.

On 05/15/2017 03:43 AM, Brian Carpenter wrote:
> Reviewer: Brian Carpenter
> Review result: Ready with Issues
>
> Gen-ART Last Call review of draft-ietf-pals-vpls-pim-snooping-05
>
> I am the assigned Gen-ART reviewer for this draft. The General Area
> Review Team (Gen-ART) reviews all IETF documents being processed
> by the IESG for the IETF Chair.  Please treat these comments just
> like any other last call comments.
>
> For more information, please see the FAQ at
> <http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq>.
>
> Document: draft-ietf-pals-vpls-pim-snooping-05.txt
> Reviewer: Brian Carpenter
> Review Date: 2017-05-15
> IETF LC End Date: 2017-05-19
> IESG Telechat date: 2017-05-25
>
> Summary: Ready with issues
> --------
>
> Comment:
> --------
>
> "This document isn't defining a new protocol, but rather methods to
> optimize the use of PIM-based multicast in a VPLS environment."
> [Shepherd's writeup] Also, the document uses RFC2119 terminology.
>
> So why not BCP?
>
> Major issue:
> ------------
>
>> 2.11.  Directly Connected Multicast Source
> ...
>>    o  The PE would have to do ARP snooping to determine if a source
> is
>>       directly connected.
> What about IPv6? It may be sufficient to add Neighbor Discovery
> snooping,
> but you need to say something.
>
> Nits:
> -----
>
>> 1.  Introduction
> ...
>>     o  B.  Replication on PWs on shared physical path.
> I realise this is declared out of scope a few lines later, but
> it's very "telegraphic" and hard to understand. I think you mean
>
> o  B. Multicast traffic may be replicated when several PWs share a
> physical path.
>
> ...
>>    While this document is in the context of VPLS, the procedures
> apply
>>    to regular layer-2 switches interconnected by physical connections
> as
>>    well, albeit this is outside of the scope of this document.  In
> that
>>    case, the PW related concept/procedures are not applicable and
> that's
>>    all.
> That is rather unclear. How about:
>
>    While this document is written in the context of VPLS, the
> procedures
>    also apply to regular layer-2 switches interconnected by physical
>    connections, except that the PW related concept and procedures do
> not
>    apply in the case.
>
>> 2.2.  General Rules for PIM Snooping in VPLS
> BPDU is used but not defined.
>
>> 2.2.1.  Preserving Assert Trigger
>>
>>    In PIM-SM/DM, there are scenarios where multiple routers could be
>>    forwarding the same multicast traffic on a LAN.  When this
> happens,
>>    using PIM Assert election process by sending PIM Assert messages,
>>    routers ensure that only the Assert winner forwards traffic on
> the
>>    LAN.
> Either I have misunderstood the intention, or the second sentence is
> written half backwards. I *think* you mean
>
>     In PIM-SM/DM, there are scenarios where multiple routers could be
>     forwarding the same multicast traffic on a LAN.  When this
> happens,
>     these routers start the PIM Assert election process by sending PIM
>     Assert messages, to ensure that only the Assert winner forwards
>     future multicast traffic on the LAN.
>
>> 2.3.2.  IPv6
> What's so special about IPv6, or why isn't this section titled
> "IPv4"?
> Or better, stay neutral:
>
> 2.3.2.  IP Versions
>
>> 2.3.3.  PIM-SM (*,*,RP)
>>
>>    This document does not address (*,*,RP) states in the VPLS
> network.
>>    Although [PIM-SM] specifies that routers must support (*,*,RP)
>>    states, there are very few implementations that actually support
> it
>>    in actual deployments, and it is being removed from the PIM
> protocol
>>    in its ongoing advancement process in IETF.  Given that, this
>>    document omits the specification relating to (*,*,RP) support.
> If I understand things correctly, you should say
>
> ...  it has been removed from the PIM protocol [RFC7761].
>
>> 2.4.3.  When to Snoop and When to Proxy
> ...
>>    Therefore, the general rule is that if Join Suppression is enabled
> on
>>    CEs then proxying or relay MUST be used and if Suppression is
> known
>>    to be disabled on all CEs then either snooping, relay, or
> proxying
>>    MAY be used while snooping or relay SHOULD be used.
> I had to read this a few times. I think you mean
>
>     Therefore, the general rule is that if Join Suppression is enabled
> on
>     one or more CEs then proxying or relay MUST be used, but if
> Suppression is known
>     to be disabled on all CEs then either snooping, relay, or proxying
>     MAY be used while snooping or relay SHOULD be used.
>
> (as I understand it, even one CE with Join Suppression breaks snooping
> for
> the whole PE.)
>
>> 7.  References
>   
> As an RFC user, I find references like [IGMP-SNOOP] instead of
> [RFC4541]
> quite impractical. It wastes bits to use constructs like "RFC4541
> [IGMP-SNOOP]",
> which the RFC Editor will change to "RFC 4541 [IGMP-SNOOP]".
>
>
>
>


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From: Alissa Cooper <alissa@cooperw.in>
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Date: Wed, 24 May 2017 14:55:20 -0400
Cc: Brian Carpenter <brian.e.carpenter@gmail.com>, gen-art@ietf.org, draft-ietf-pals-vpls-pim-snooping.all@ietf.org, pals@ietf.org
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To: Olivier Dornon <olivier.dornon@nokia.com>
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Subject: Re: [Pals] [Gen-art] Genart last call review of draft-ietf-pals-vpls-pim-snooping-05
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Brian, thank you for your review. Olivier, thank you for your response. =
I have balloted No Objection.

Alissa

> On May 22, 2017, at 3:50 AM, Olivier Dornon <olivier.dornon@nokia.com> =
wrote:
>=20
> Brian,
>=20
> Thank you for the thorough review.
>=20
> I agree on all your comments, the changes will be included in the next =
version.
>=20
> Thanks,
> Olivier.
>=20
> On 05/15/2017 03:43 AM, Brian Carpenter wrote:
>> Reviewer: Brian Carpenter
>> Review result: Ready with Issues
>>=20
>> Gen-ART Last Call review of draft-ietf-pals-vpls-pim-snooping-05
>>=20
>> I am the assigned Gen-ART reviewer for this draft. The General Area
>> Review Team (Gen-ART) reviews all IETF documents being processed
>> by the IESG for the IETF Chair.  Please treat these comments just
>> like any other last call comments.
>>=20
>> For more information, please see the FAQ at
>> <http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq>.
>>=20
>> Document: draft-ietf-pals-vpls-pim-snooping-05.txt
>> Reviewer: Brian Carpenter
>> Review Date: 2017-05-15
>> IETF LC End Date: 2017-05-19
>> IESG Telechat date: 2017-05-25
>>=20
>> Summary: Ready with issues
>> --------
>>=20
>> Comment:
>> --------
>>=20
>> "This document isn't defining a new protocol, but rather methods to
>> optimize the use of PIM-based multicast in a VPLS environment."
>> [Shepherd's writeup] Also, the document uses RFC2119 terminology.
>>=20
>> So why not BCP?
>>=20
>> Major issue:
>> ------------
>>=20
>>> 2.11.  Directly Connected Multicast Source
>> ...
>>>   o  The PE would have to do ARP snooping to determine if a source
>> is
>>>      directly connected.
>> What about IPv6? It may be sufficient to add Neighbor Discovery
>> snooping,
>> but you need to say something.
>>=20
>> Nits:
>> -----
>>=20
>>> 1.  Introduction
>> ...
>>>    o  B.  Replication on PWs on shared physical path.
>> I realise this is declared out of scope a few lines later, but
>> it's very "telegraphic" and hard to understand. I think you mean
>>=20
>> o  B. Multicast traffic may be replicated when several PWs share a
>> physical path.
>>=20
>> ...
>>>   While this document is in the context of VPLS, the procedures
>> apply
>>>   to regular layer-2 switches interconnected by physical connections
>> as
>>>   well, albeit this is outside of the scope of this document.  In
>> that
>>>   case, the PW related concept/procedures are not applicable and
>> that's
>>>   all.
>> That is rather unclear. How about:
>>=20
>>   While this document is written in the context of VPLS, the
>> procedures
>>   also apply to regular layer-2 switches interconnected by physical
>>   connections, except that the PW related concept and procedures do
>> not
>>   apply in the case.
>>=20
>>> 2.2.  General Rules for PIM Snooping in VPLS
>> BPDU is used but not defined.
>>=20
>>> 2.2.1.  Preserving Assert Trigger
>>>=20
>>>   In PIM-SM/DM, there are scenarios where multiple routers could be
>>>   forwarding the same multicast traffic on a LAN.  When this
>> happens,
>>>   using PIM Assert election process by sending PIM Assert messages,
>>>   routers ensure that only the Assert winner forwards traffic on
>> the
>>>   LAN.
>> Either I have misunderstood the intention, or the second sentence is
>> written half backwards. I *think* you mean
>>=20
>>    In PIM-SM/DM, there are scenarios where multiple routers could be
>>    forwarding the same multicast traffic on a LAN.  When this
>> happens,
>>    these routers start the PIM Assert election process by sending PIM
>>    Assert messages, to ensure that only the Assert winner forwards
>>    future multicast traffic on the LAN.
>>=20
>>> 2.3.2.  IPv6
>> What's so special about IPv6, or why isn't this section titled
>> "IPv4"?
>> Or better, stay neutral:
>>=20
>> 2.3.2.  IP Versions
>>=20
>>> 2.3.3.  PIM-SM (*,*,RP)
>>>=20
>>>   This document does not address (*,*,RP) states in the VPLS
>> network.
>>>   Although [PIM-SM] specifies that routers must support (*,*,RP)
>>>   states, there are very few implementations that actually support
>> it
>>>   in actual deployments, and it is being removed from the PIM
>> protocol
>>>   in its ongoing advancement process in IETF.  Given that, this
>>>   document omits the specification relating to (*,*,RP) support.
>> If I understand things correctly, you should say
>>=20
>> ...  it has been removed from the PIM protocol [RFC7761].
>>=20
>>> 2.4.3.  When to Snoop and When to Proxy
>> ...
>>>   Therefore, the general rule is that if Join Suppression is enabled
>> on
>>>   CEs then proxying or relay MUST be used and if Suppression is
>> known
>>>   to be disabled on all CEs then either snooping, relay, or
>> proxying
>>>   MAY be used while snooping or relay SHOULD be used.
>> I had to read this a few times. I think you mean
>>=20
>>    Therefore, the general rule is that if Join Suppression is enabled
>> on
>>    one or more CEs then proxying or relay MUST be used, but if
>> Suppression is known
>>    to be disabled on all CEs then either snooping, relay, or proxying
>>    MAY be used while snooping or relay SHOULD be used.
>>=20
>> (as I understand it, even one CE with Join Suppression breaks =
snooping
>> for
>> the whole PE.)
>>=20
>>> 7.  References
>>  As an RFC user, I find references like [IGMP-SNOOP] instead of
>> [RFC4541]
>> quite impractical. It wastes bits to use constructs like "RFC4541
>> [IGMP-SNOOP]",
>> which the RFC Editor will change to "RFC 4541 [IGMP-SNOOP]".
>>=20
>>=20
>>=20
>>=20
>=20
> _______________________________________________
> Gen-art mailing list
> Gen-art@ietf.org
> https://www.ietf.org/mailman/listinfo/gen-art


From nobody Wed May 24 14:14:18 2017
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From: Ben Campbell <ben@nostrum.com>
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Cc: draft-ietf-pals-vpls-pim-snooping@ietf.org, Andrew Malis <agmalis@gmail.com>, pals-chairs@ietf.org, agmalis@gmail.com, pals@ietf.org
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Subject: [Pals] Ben Campbell's No Objection on draft-ietf-pals-vpls-pim-snooping-05: (with COMMENT)
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Ben Campbell has entered the following ballot position for
draft-ietf-pals-vpls-pim-snooping-05: No Objection

When responding, please keep the subject line intact and reply to all
email addresses included in the To and CC lines. (Feel free to cut this
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Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
for more information about IESG DISCUSS and COMMENT positions.


The document, along with other ballot positions, can be found here:
https://datatracker.ietf.org/doc/draft-ietf-pals-vpls-pim-snooping/



----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

[This was deferred from the May 24 telechat while I was in the act of
reviewing it :-) I'm not sure if my comments will be relevant, but I will
enter them anyway since I have them.]

- The shepherd report describes why this is not PS. Was BCP considered?
If people don't think this is appropriate as a BCP, it would be good to
include comments about whether we expect people to adopt these practices.
(Keeping in mind that an informational draft explicitly does not comprise
such a recommendation.)

-4: I think the security considerations need more, well, consideration.
For example, could an attacker use this method to deny service, or to
force traffic to follow a compromised path?

Editorial:

-1.1: "   Notice that traffic is always sent on ports that have
point-to-point
   connections to routers that are attached to a LAN on which there is
a
   router."
That seems like a circular statement.  ("... connected to routers that
are attached to a LAN on which there is a router.")



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At the last IETF a concern was raised by the folks that also attend IEEE 
802 that there
was a problem with PW packets being mistaken for IP packets and 
incorrectly ECMPed.
This has recently been highlighted at a number of operator forums. We 
agree with
our AD that we could write a draft on the problem and recommended solution.

As the draft explains we knew about the problem, but a change of 
Ethernet Address
allocation policy has caused the problem to be more severe than it once was.

Ignas has some more text on operational considerations to add to the 
next version.

We have scheduled a short WG meeting in Prague to discuss, and as both 
chairs
are authors we will be looking for an independent shepherd to manage the
discussion and put the draft through the IETF process.

Best Regards

- Stewart


-------- Forwarded Message --------
Subject: 	New Version Notification for draft-bryant-pals-ethernet-cw-00.txt
Date: 	Thu, 25 May 2017 12:52:57 -0700
From: 	internet-drafts@ietf.org
To: 	Stewart Bryant <stewart.bryant@gmail.com>, Ignas Bagdonas 
<ibagdona.ietf@gmail.com>, Andrew Malis <agmalis@gmail.com>, Andrew G 
Malis <agmalis@gmail.com>



A new version of I-D, draft-bryant-pals-ethernet-cw-00.txt
has been successfully submitted by Stewart Bryant and posted to the
IETF repository.

Name:		draft-bryant-pals-ethernet-cw
Revision:	00
Title:		Use of Ethernet Control Word RECOMMENDED
Document date:	2017-05-25
Group:		Individual Submission
Pages:		8
URL:            https://www.ietf.org/internet-drafts/draft-bryant-pals-ethernet-cw-00.txt
Status:         https://datatracker.ietf.org/doc/draft-bryant-pals-ethernet-cw/
Htmlized:       https://tools.ietf.org/html/draft-bryant-pals-ethernet-cw-00
Htmlized:       https://datatracker.ietf.org/doc/html/draft-bryant-pals-ethernet-cw-00


Abstract:
    The pseudowire (PW) encapsulation of Ethernet, as defined in RFC4448,
    specifies that the use of the control word (CW) is optional.  In the
    absence of the CW an Ethernet pseudowire packet can be misidentified
    as an IP packet by a label switching router (LSR).  This in turn may
    lead to the selection of the wrong equal-cost-multi-path (ECMP) path
    for the packet, leading in turn to the mis-ordering of packets.  This
    problem has become more serious due to the deployment of equipment
    with Ethernet MAC addresses that start with 0x4 or 0x6.  The use of
    the Ethernet PW CW addresses this problem.  This document recommends
    the use of the Ethernet pseudowire control word in all but
    exceptional circumstances.

    This document updates RFC4448.

                                                                                   


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


--------------23EA9FF4D6A2549A1B02A619
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 7bit

<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=utf-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p><br>
    </p>
    At the last IETF a concern was raised by the folks that also attend
    IEEE 802 that there<br>
    was a problem with PW packets being mistaken for IP packets and
    incorrectly ECMPed.<br>
    This has recently been highlighted at a number of operator forums.
    We agree with <br>
    our AD that we could write a draft on the problem and recommended
    solution.<br>
    <br>
    As the draft explains we knew about the problem, but a change of
    Ethernet Address<br>
    allocation policy has caused the problem to be more severe than it
    once was.<br>
    <br>
    Ignas has some more text on operational considerations to add to the
    next version.<br>
    <br>
    We have scheduled a short WG meeting in Prague to discuss, and as
    both chairs<br>
    are authors we will be looking for an independent shepherd to manage
    the <br>
    discussion and put the draft through the IETF process.<br>
    <br>
    Best Regards<br>
    <br>
    - Stewart<br>
    <div class="moz-forward-container"><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-bryant-pals-ethernet-cw-00.txt</td>
          </tr>
          <tr>
            <th nowrap="nowrap" valign="BASELINE" align="RIGHT">Date: </th>
            <td>Thu, 25 May 2017 12:52:57 -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>Stewart Bryant <a class="moz-txt-link-rfc2396E" href="mailto:stewart.bryant@gmail.com">&lt;stewart.bryant@gmail.com&gt;</a>, Ignas
              Bagdonas <a class="moz-txt-link-rfc2396E" href="mailto:ibagdona.ietf@gmail.com">&lt;ibagdona.ietf@gmail.com&gt;</a>, Andrew Malis
              <a class="moz-txt-link-rfc2396E" href="mailto:agmalis@gmail.com">&lt;agmalis@gmail.com&gt;</a>, Andrew G Malis
              <a class="moz-txt-link-rfc2396E" href="mailto:agmalis@gmail.com">&lt;agmalis@gmail.com&gt;</a></td>
          </tr>
        </tbody>
      </table>
      <br>
      <br>
      <pre>A new version of I-D, draft-bryant-pals-ethernet-cw-00.txt
has been successfully submitted by Stewart Bryant and posted to the
IETF repository.

Name:		draft-bryant-pals-ethernet-cw
Revision:	00
Title:		Use of Ethernet Control Word RECOMMENDED
Document date:	2017-05-25
Group:		Individual Submission
Pages:		8
URL:            <a class="moz-txt-link-freetext" href="https://www.ietf.org/internet-drafts/draft-bryant-pals-ethernet-cw-00.txt">https://www.ietf.org/internet-drafts/draft-bryant-pals-ethernet-cw-00.txt</a>
Status:         <a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/draft-bryant-pals-ethernet-cw/">https://datatracker.ietf.org/doc/draft-bryant-pals-ethernet-cw/</a>
Htmlized:       <a class="moz-txt-link-freetext" href="https://tools.ietf.org/html/draft-bryant-pals-ethernet-cw-00">https://tools.ietf.org/html/draft-bryant-pals-ethernet-cw-00</a>
Htmlized:       <a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/html/draft-bryant-pals-ethernet-cw-00">https://datatracker.ietf.org/doc/html/draft-bryant-pals-ethernet-cw-00</a>


Abstract:
   The pseudowire (PW) encapsulation of Ethernet, as defined in RFC4448,
   specifies that the use of the control word (CW) is optional.  In the
   absence of the CW an Ethernet pseudowire packet can be misidentified
   as an IP packet by a label switching router (LSR).  This in turn may
   lead to the selection of the wrong equal-cost-multi-path (ECMP) path
   for the packet, leading in turn to the mis-ordering of packets.  This
   problem has become more serious due to the deployment of equipment
   with Ethernet MAC addresses that start with 0x4 or 0x6.  The use of
   the Ethernet PW CW addresses this problem.  This document recommends
   the use of the Ethernet pseudowire control word in all but
   exceptional circumstances.

   This document updates RFC4448.

                                                                                  


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>

--------------23EA9FF4D6A2549A1B02A619--


From nobody Fri May 26 13:31:33 2017
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Subject: [Pals] Last Call: <draft-ietf-pals-p2mp-pw-lsp-ping-03.txt> (Definition of P2MP PW TLV for LSP-Ping Mechanisms) to Proposed Standard
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The IESG has received a request from the Pseudowire And LDP-enabled
Services WG (pals) to consider the following document:
- 'Definition of P2MP PW TLV for LSP-Ping Mechanisms'
  <draft-ietf-pals-p2mp-pw-lsp-ping-03.txt> as Proposed Standard

The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2017-06-09. Exceptionally, comments may be
sent to iesg@ietf.org instead. In either case, please retain the
beginning of the Subject line to allow automated sorting.

Abstract


   LSP-Ping is a widely deployed Operation, Administration, and
   Maintenance (OAM) mechanism in MPLS networks.  This document
   describes a mechanism to verify connectivity of Point-to-Multipoint
   (P2MP) Pseudowires (PW) using LSP Ping.




The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-pals-p2mp-pw-lsp-ping/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-pals-p2mp-pw-lsp-ping/ballot/


No IPR declarations have been submitted directly on this I-D.





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From: Stewart Bryant <stewart.bryant@gmail.com>
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Can I take silence as agreement with this draft :)

Stewart

On 25/05/2017 21:01, Stewart Bryant wrote:
>
>
> At the last IETF a concern was raised by the folks that also attend 
> IEEE 802 that there
> was a problem with PW packets being mistaken for IP packets and 
> incorrectly ECMPed.
> This has recently been highlighted at a number of operator forums. We 
> agree with
> our AD that we could write a draft on the problem and recommended 
> solution.
>
> As the draft explains we knew about the problem, but a change of 
> Ethernet Address
> allocation policy has caused the problem to be more severe than it 
> once was.
>
> Ignas has some more text on operational considerations to add to the 
> next version.
>
> We have scheduled a short WG meeting in Prague to discuss, and as both 
> chairs
> are authors we will be looking for an independent shepherd to manage the
> discussion and put the draft through the IETF process.
>
> Best Regards
>
> - Stewart
>
>
> -------- Forwarded Message --------
> Subject: 	New Version Notification for 
> draft-bryant-pals-ethernet-cw-00.txt
> Date: 	Thu, 25 May 2017 12:52:57 -0700
> From: 	internet-drafts@ietf.org
> To: 	Stewart Bryant <stewart.bryant@gmail.com>, Ignas Bagdonas 
> <ibagdona.ietf@gmail.com>, Andrew Malis <agmalis@gmail.com>, Andrew G 
> Malis <agmalis@gmail.com>
>
>
>
> A new version of I-D, draft-bryant-pals-ethernet-cw-00.txt
> has been successfully submitted by Stewart Bryant and posted to the
> IETF repository.
>
> Name:		draft-bryant-pals-ethernet-cw
> Revision:	00
> Title:		Use of Ethernet Control Word RECOMMENDED
> Document date:	2017-05-25
> Group:		Individual Submission
> Pages:		8
> URL:https://www.ietf.org/internet-drafts/draft-bryant-pals-ethernet-cw-00.txt
> Status:https://datatracker.ietf.org/doc/draft-bryant-pals-ethernet-cw/
> Htmlized:https://tools.ietf.org/html/draft-bryant-pals-ethernet-cw-00
> Htmlized:https://datatracker.ietf.org/doc/html/draft-bryant-pals-ethernet-cw-00
>
>
> Abstract:
>     The pseudowire (PW) encapsulation of Ethernet, as defined in RFC4448,
>     specifies that the use of the control word (CW) is optional.  In the
>     absence of the CW an Ethernet pseudowire packet can be misidentified
>     as an IP packet by a label switching router (LSR).  This in turn may
>     lead to the selection of the wrong equal-cost-multi-path (ECMP) path
>     for the packet, leading in turn to the mis-ordering of packets.  This
>     problem has become more serious due to the deployment of equipment
>     with Ethernet MAC addresses that start with 0x4 or 0x6.  The use of
>     the Ethernet PW CW addresses this problem.  This document recommends
>     the use of the Ethernet pseudowire control word in all but
>     exceptional circumstances.
>
>     This document updates RFC4448.
>
>                                                                                    
>
>
> 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
>


--------------3CC990C23FDF826E109F218F
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Content-Transfer-Encoding: 7bit

<html>
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    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p><br>
    </p>
    Can I take silence as agreement with this draft :)<br>
    <br>
    Stewart<br>
    <br>
    <div class="moz-cite-prefix">On 25/05/2017 21:01, Stewart Bryant
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:f4f7ef3b-a359-a51d-2675-84fa574e23bc@gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=utf-8">
      <p><br>
      </p>
      At the last IETF a concern was raised by the folks that also
      attend IEEE 802 that there<br>
      was a problem with PW packets being mistaken for IP packets and
      incorrectly ECMPed.<br>
      This has recently been highlighted at a number of operator forums.
      We agree with <br>
      our AD that we could write a draft on the problem and recommended
      solution.<br>
      <br>
      As the draft explains we knew about the problem, but a change of
      Ethernet Address<br>
      allocation policy has caused the problem to be more severe than it
      once was.<br>
      <br>
      Ignas has some more text on operational considerations to add to
      the next version.<br>
      <br>
      We have scheduled a short WG meeting in Prague to discuss, and as
      both chairs<br>
      are authors we will be looking for an independent shepherd to
      manage the <br>
      discussion and put the draft through the IETF process.<br>
      <br>
      Best Regards<br>
      <br>
      - Stewart<br>
      <div class="moz-forward-container"><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-bryant-pals-ethernet-cw-00.txt</td>
            </tr>
            <tr>
              <th nowrap="nowrap" valign="BASELINE" align="RIGHT">Date:
              </th>
              <td>Thu, 25 May 2017 12:52:57 -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"
                  moz-do-not-send="true">internet-drafts@ietf.org</a></td>
            </tr>
            <tr>
              <th nowrap="nowrap" valign="BASELINE" align="RIGHT">To: </th>
              <td>Stewart Bryant <a class="moz-txt-link-rfc2396E"
                  href="mailto:stewart.bryant@gmail.com"
                  moz-do-not-send="true">&lt;stewart.bryant@gmail.com&gt;</a>,
                Ignas Bagdonas <a class="moz-txt-link-rfc2396E"
                  href="mailto:ibagdona.ietf@gmail.com"
                  moz-do-not-send="true">&lt;ibagdona.ietf@gmail.com&gt;</a>,
                Andrew Malis <a class="moz-txt-link-rfc2396E"
                  href="mailto:agmalis@gmail.com" moz-do-not-send="true">&lt;agmalis@gmail.com&gt;</a>,
                Andrew G Malis <a class="moz-txt-link-rfc2396E"
                  href="mailto:agmalis@gmail.com" moz-do-not-send="true">&lt;agmalis@gmail.com&gt;</a></td>
            </tr>
          </tbody>
        </table>
        <br>
        <br>
        <pre>A new version of I-D, draft-bryant-pals-ethernet-cw-00.txt
has been successfully submitted by Stewart Bryant and posted to the
IETF repository.

Name:		draft-bryant-pals-ethernet-cw
Revision:	00
Title:		Use of Ethernet Control Word RECOMMENDED
Document date:	2017-05-25
Group:		Individual Submission
Pages:		8
URL:            <a class="moz-txt-link-freetext" href="https://www.ietf.org/internet-drafts/draft-bryant-pals-ethernet-cw-00.txt" moz-do-not-send="true">https://www.ietf.org/internet-drafts/draft-bryant-pals-ethernet-cw-00.txt</a>
Status:         <a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/draft-bryant-pals-ethernet-cw/" moz-do-not-send="true">https://datatracker.ietf.org/doc/draft-bryant-pals-ethernet-cw/</a>
Htmlized:       <a class="moz-txt-link-freetext" href="https://tools.ietf.org/html/draft-bryant-pals-ethernet-cw-00" moz-do-not-send="true">https://tools.ietf.org/html/draft-bryant-pals-ethernet-cw-00</a>
Htmlized:       <a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/html/draft-bryant-pals-ethernet-cw-00" moz-do-not-send="true">https://datatracker.ietf.org/doc/html/draft-bryant-pals-ethernet-cw-00</a>


Abstract:
   The pseudowire (PW) encapsulation of Ethernet, as defined in RFC4448,
   specifies that the use of the control word (CW) is optional.  In the
   absence of the CW an Ethernet pseudowire packet can be misidentified
   as an IP packet by a label switching router (LSR).  This in turn may
   lead to the selection of the wrong equal-cost-multi-path (ECMP) path
   for the packet, leading in turn to the mis-ordering of packets.  This
   problem has become more serious due to the deployment of equipment
   with Ethernet MAC addresses that start with 0x4 or 0x6.  The use of
   the Ethernet PW CW addresses this problem.  This document recommends
   the use of the Ethernet pseudowire control word in all but
   exceptional circumstances.

   This document updates RFC4448.

                                                                                  


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>
    </blockquote>
    <br>
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</html>

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From nobody Wed May 31 09:02:04 2017
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Subject: [Pals] Genart last call review of draft-ietf-pals-p2mp-pw-lsp-ping-03
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Reviewer: Joel Halpern
Review result: Ready

I am the assigned Gen-ART reviewer for this draft. The General Area
Review Team (Gen-ART) reviews all IETF documents being processed
by the IESG for the IETF Chair.  Please treat these comments just
like any other last call comments.

For more information, please see the FAQ at

<https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.

Document: draft-ietf-pals-p2mp-pw-lsp-ping-??
Reviewer: Joel Halpern
Review Date: 2017-05-31
IETF LC End Date: 2017-06-09
IESG Telechat date: 2017-06-22

Summary: This document is ready for publication as a proposed
standard

Major issues: N/A

Minor issues: N/A

Nits/editorial comments:  N/A



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