
From nobody Mon Apr  3 00:31:32 2017
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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           : Protocol Independent Multicast (PIM) over Virtual Private LAN Service (VPLS)
        Authors         : Olivier Dornon
                          Jayant Kotalwar
                          Venu Hemige
                          Ray Qiu
                          Jeffrey Zhang
	Filename        : draft-ietf-pals-vpls-pim-snooping-05.txt
	Pages           : 40
	Date            : 2017-04-03

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 IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pals-vpls-pim-snooping/

There are also htmlized versions available at:
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https://datatracker.ietf.org/doc/html/draft-ietf-pals-vpls-pim-snooping-05

A diff from the previous version is available at:
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From nobody Sun Apr  9 19:26:22 2017
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

In this text,

    -iii. If the new value is smaller then the original one, the PE
            will operate according to the original timer value for a
            period 3.5 times the original timer value, or until the
            first valid PW status refresh reduction message is
received.

Perhaps it would be helpful to explain the choice of 3.5, so that if this
mechanism is deployed for a network where that number is the wrong
number, people will know how to adjust it? 

There are several occurrences where s/then/than/ is needed, I think. I
spotted at least 3.

Other nits …
S/octetc/octets/
S/RECOMENDED/RECOMMENDED/
S/vaules/values/

In section 7. Security Considerations

   The security considerations of [RFC6478] are adequate for the
   proposed mechanism since the operating environment is almost
   identical to the one where this protocol would be deployed. It
should
   also be noted that since this protocol is designed to be deployed
   between two adjacent PEs connected by a physical link, it is not
   possible to misdirect or inject traffic without compromising the PW
   transport link itself. All these situations are covered in the
   security considerations of [RFC6478].

There's an appeal to physical adjacency as a defensive mechanism. If this
protocol is deployed in a tunnel over UDP, would “physical adjacency”
still be true?



From nobody Mon Apr 10 07:23:02 2017
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----------------------------------------------------------------------
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?

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   |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

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.

Section 8.2 says values 1 and 2 are defined in this document but then
it seems value 3 is also allocated, no?

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.



From nobody Mon Apr 10 12:16:48 2017
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----------------------------------------------------------------------
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?



From nobody Tue Apr 11 11:55:56 2017
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

>From Dan's Gen-ART review:

Nits/editorial comments: 

1. In section 8, first paragraph: s/rages/ranges/
2. In sections 8.3, 8.4 the construct "IETF Review" is worded in three
different ways (IETF review, IETF Review, "IETF Review") - better
align



From nobody Tue Apr 11 15:07:10 2017
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------


S 1.

   Periodic retransmission
   of non-zero status messages, and a simple acknowledge of PW status

"acknowledgement", perhaps?

S 2.
I found the state machine here a bit hard to follow. Some sort of
diagram might help.


S 4.
This is kind of an odd recommendation for how to generate the session
ID. Why not just Hash(timer) rather than hash of an ASCII formatted
date?


S 5.
       The C Bit is used to signal the end of PW configuration
       transmission. If it is set, the sending PE has finished sending
       all it’s current configuration information.

"its"

Is last received sequence number a cumulative ack or the temporarally
last received packet?


S 5.2
Is Length the remaining length or the length of the entire TLV?



From nobody Wed Apr 12 03:57:42 2017
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

8.3. PW Status Refresh Reduction Notification Codes

   IANA needs to set up a registry of "PW status refresh reduction
   Notification Codes". These are 32-bit values. Type value 0 through 7
   are defined in this document. Type values 8 through 65536, and
   134,217,729 through 4,294,967,294 are to be assigned by IANA using
   the "Expert Review" policy defined in RFC5226. Type values 65536
   through 134,217,728, 0 and 4,294,967,295 are to be allocated using
   the IETF review policy defined in [RFC5226].

   For each value assigned IANA should also track whether the value
   constitutes an error as described in Section 5.1. When values are
   assigned by IETF Review, the setting of this column must be
   documented in the RFC that requests the allocation. For Expert
Review
   and FCFS assignments, the setting of this column must be made clear
   by the requester at the time of assignment.

FCFS policy is not used in this document, so it shouldn't be mentioned.
Or possibly you meant "IETF Review" here?



From nobody Wed Apr 12 07:27:17 2017
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From: =?utf-8?q?Mirja_K=C3=BChlewind?= <ietf@kuehlewind.net>
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Mirja Kühlewind 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:
----------------------------------------------------------------------

(important) nit in section 8.5:
s/PW Sytatus Refresh Reduction/PW Status Refresh Reduction/



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From: "Andrew G. Malis" <agmalis@gmail.com>
Date: Fri, 14 Apr 2017 07:51:21 -0400
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Subject: Re: [Pals] PALS Working Group last call for draft-ietf-pals-p2mp-pw-lsp-ping-01
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This ends the WG last call for draft-ietf-pals-p2mp-pw-lsp-ping. Authors,
please respond to Greg=E2=80=99s comments.

Thanks,
Andy


On Wed, Mar 15, 2017 at 11:00 AM, Andrew G. Malis <agmalis@gmail.com> wrote=
:

> Having heard from all of the authors regarding IPR, this starts the WG
> last call for https://tools.ietf.org/html/draft-
> ietf-pals-p2mp-pw-lsp-ping-01 . Because it=E2=80=99s over IETF week, this=
 last
> call will last for three weeks, ending on April 5. Please review the
> draft and send all comments to pals@ietf.org.
>
> Thanks,
> Andy
>
>

--001a113ba4509ba5c1054d1f10ab
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<div dir=3D"ltr">This ends the WG last call for=C2=A0draft-ietf-pals-p2mp-p=
w-lsp-ping. Authors, please respond to Greg=E2=80=99s comments.<div><br></d=
iv><div>Thanks,</div><div>Andy</div><div><br></div></div><div class=3D"gmai=
l_extra"><br><div class=3D"gmail_quote">On Wed, Mar 15, 2017 at 11:00 AM, A=
ndrew G. Malis <span dir=3D"ltr">&lt;<a href=3D"mailto:agmalis@gmail.com" t=
arget=3D"_blank">agmalis@gmail.com</a>&gt;</span> wrote:<br><blockquote cla=
ss=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pa=
dding-left:1ex"><div dir=3D"ltr"><span style=3D"font-size:12.80000019073486=
3px">Having heard from all of the authors regarding IPR, this starts the WG=
=C2=A0</span><span class=3D"m_-3171824264151695483gmail-m_33547812207197001=
55gmail-il" style=3D"font-size:12.800000190734863px">last</span><span style=
=3D"font-size:12.800000190734863px">=C2=A0</span><span class=3D"m_-31718242=
64151695483gmail-m_3354781220719700155gmail-il" style=3D"font-size:12.80000=
0190734863px">call</span><span style=3D"font-size:12.800000190734863px">=C2=
=A0for=C2=A0</span><a href=3D"https://tools.ietf.org/html/draft-ietf-pals-p=
2mp-pw-lsp-ping-01" style=3D"font-size:12.800000190734863px" target=3D"_bla=
nk">https://<wbr>tools.ietf.org/html/draft-<wbr>ietf-pals-p2mp-pw-lsp-ping-=
01</a><span style=3D"font-size:12.800000190734863px">=C2=A0<wbr>. Because i=
t=E2=80=99s over IETF week, this=C2=A0</span><span class=3D"m_-317182426415=
1695483gmail-m_3354781220719700155gmail-il" style=3D"font-size:12.800000190=
734863px">last</span><span style=3D"font-size:12.800000190734863px">=C2=A0<=
/span><span class=3D"m_-3171824264151695483gmail-m_3354781220719700155gmail=
-il" style=3D"font-size:12.800000190734863px">call</span><span style=3D"fon=
t-size:12.800000190734863px">=C2=A0will=C2=A0</span><span class=3D"m_-31718=
24264151695483gmail-m_3354781220719700155gmail-il" style=3D"font-size:12.80=
0000190734863px">last</span><span style=3D"font-size:12.800000190734863px">=
=C2=A0for three weeks, ending on April 5. Please review the draft and send =
all comments to=C2=A0</span><a href=3D"mailto:pals@ietf.org" style=3D"font-=
size:12.800000190734863px" target=3D"_blank">pals@ietf.org</a><span style=
=3D"font-size:12.800000190734863px">.</span><br><div class=3D"gmail_quote">=
<div dir=3D"ltr"><div style=3D"font-size:12.800000190734863px"><br></div><d=
iv style=3D"font-size:12.800000190734863px">Thanks,</div><div style=3D"font=
-size:12.800000190734863px">Andy</div><div style=3D"font-size:12.8000001907=
34863px"><br></div></div></div></div>
</blockquote></div><br></div>

--001a113ba4509ba5c1054d1f10ab--


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From: "Parag Jain (paragj)" <paragj@cisco.com>
To: Greg Mirsky <gregimirsky@gmail.com>
CC: "Andrew G. Malis" <agmalis@gmail.com>, "pals@ietf.org" <pals@ietf.org>, "draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org" <draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org>
Thread-Topic: [Pals] PALS Working Group last call for draft-ietf-pals-p2mp-pw-lsp-ping-01
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From nobody Mon Apr 24 20:23:49 2017
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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           : Definition of P2MP PW TLV for LSP-Ping Mechanisms
        Authors         : Parag Jain
                          Sami Boutros
                          Sam Aldrin
	Filename        : draft-ietf-pals-p2mp-pw-lsp-ping-02.txt
	Pages           : 8
	Date            : 2017-04-24

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 IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pals-p2mp-pw-lsp-ping/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-pals-p2mp-pw-lsp-ping-02
https://datatracker.ietf.org/doc/html/draft-ietf-pals-p2mp-pw-lsp-ping-02

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-pals-p2mp-pw-lsp-ping-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/


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 24 Apr 2017 23:22:30 -0700
Message-ID: <CA+RyBmVg9QscEH831fbf=BogZzpUOV0hiDYQAuMo5JitNhON0w@mail.gmail.com>
To: "Parag Jain (paragj)" <paragj@cisco.com>
Cc: "Andrew G. Malis" <agmalis@gmail.com>, "pals@ietf.org" <pals@ietf.org>,  "draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org" <draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/pals/LwqSJrpjl_gq5YjHGVNlLAUt1U0>
Subject: Re: [Pals] PALS Working Group last call for draft-ietf-pals-p2mp-pw-lsp-ping-01
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--001a113d31a6a08a81054df7bf57
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Hi Parag,
thank you for your thoughtful consideration of my comments. I've checked
the update and have found all my comments being addressed.

Regards,
Greg

On Wed, Apr 19, 2017 at 9:45 AM, Parag Jain (paragj) <paragj@cisco.com>
wrote:

> Hi Greg,
>
> Thanks for your comments. Please see inline.
>
>
> On Mar 15, 2017, at 11:57 AM, Greg Mirsky <gregimirsky@gmail.com> wrote:
>
> Dear Authors,
> please find my WG LC comments below:
>
>    - per RFC 5586 GAL can be used to identify OAM payload but it is not
>    necessary for PW. We can use PW ACH per RFC 4385 without putting GAL i=
n;
>
> pj> yes, both the options can be supported - GAL label as well as PW ACH.
> Will update the draft to add PW ACH.
>
>
>    - it is not clear what "IP ACH Channel header" is. Is it IP ACH
>    Channel type? But MPLS G-ACh Types registry
>    <http://www.iana.org/assignments/g-ach-parameters/g-ach-parameters.xht=
ml#mpls-g-ach-types> doesn't
>    have IP ACH type but IPv4 (0x0021) and IPv6 (0x0057) types.
>
> pj> You are right, by IP ACH channel type we mean both ipv4 and ipv6 ACH.
> Will update the draft.
>
> Thanks
> Parag
>
> Regards,
> Greg
>
> On Wed, Mar 15, 2017 at 8:00 AM, Andrew G. Malis <agmalis@gmail.com>
> wrote:
>
>> Having heard from all of the authors regarding IPR, this starts the WG
>> last call for https://tools.ietf.org/html/draft-ietf-
>> pals-p2mp-pw-lsp-ping-01 . Because it=E2=80=99s over IETF week, this las=
t call
>>  will last for three weeks, ending on April 5. Please review the draft
>> and send all comments to pals@ietf.org.
>>
>> Thanks,
>> Andy
>>
>>
>> _______________________________________________
>> Pals mailing list
>> Pals@ietf.org
>> https://www.ietf.org/mailman/listinfo/pals
>>
>>
>
>

--001a113d31a6a08a81054df7bf57
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Parag,<div>thank you for your thoughtful consideration =
of my comments. I&#39;ve checked the update and have found all my comments =
being addressed.=C2=A0</div><div><br></div><div>Regards,</div><div>Greg</di=
v></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed, A=
pr 19, 2017 at 9:45 AM, Parag Jain (paragj) <span dir=3D"ltr">&lt;<a href=
=3D"mailto:paragj@cisco.com" target=3D"_blank">paragj@cisco.com</a>&gt;</sp=
an> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex">



<div style=3D"word-wrap:break-word">
Hi Greg,
<div><br>
</div>
<div>Thanks for your comments. Please see inline.<br>
<div><br>
</div>
<div><br>
<div><span class=3D"">
<blockquote type=3D"cite">
<div>On Mar 15, 2017, at 11:57 AM, Greg Mirsky &lt;<a href=3D"mailto:gregim=
irsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt; wrote:</di=
v>
<br class=3D"m_-3839528689773843664Apple-interchange-newline">
<div>
<div dir=3D"ltr">Dear Authors,
<div>please find my WG LC comments below:</div>
<div>
<ul>
<li>per RFC 5586 GAL can be used to identify OAM payload but it is not nece=
ssary for PW. We can use PW ACH per RFC 4385 without putting GAL in;</li></=
ul>
</div>
</div>
</div>
</blockquote></span>
pj&gt; yes, both the options can be supported - GAL label as well as PW ACH=
. Will update the draft to add PW ACH.<span class=3D""><br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">
<div>
<ul>
<li>it is not clear what &quot;IP ACH Channel header&quot; is. Is it IP ACH=
 Channel type? But=C2=A0<a href=3D"http://www.iana.org/assignments/g-ach-pa=
rameters/g-ach-parameters.xhtml#mpls-g-ach-types" target=3D"_blank">MPLS G-=
ACh Types registry</a>=C2=A0doesn&#39;t have IP ACH type but
 IPv4 (<span style=3D"font-family:&#39;open sans&#39;,&#39;helvetica neue&#=
39;,helvetica,sans-serif;font-size:13.3333px;text-align:-webkit-center">0x0=
021)=C2=A0</span>and IPv6 (<span style=3D"font-family:&#39;open sans&#39;,&=
#39;helvetica neue&#39;,helvetica,sans-serif;font-size:13.3333px;text-align=
:-webkit-center">0x0057)=C2=A0</span>types.=C2=A0</li></ul>
</div>
</div>
</div>
</blockquote></span>
pj&gt; You are right, by IP ACH channel type we mean both ipv4 and ipv6 ACH=
. Will update the draft.<br>
<br>
Thanks<span class=3D"HOEnZb"><font color=3D"#888888"><br>
Parag</font></span></div><span class=3D"">
<div><br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">
<div>
<div>Regards,</div>
</div>
<div>Greg</div>
</div>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Wed, Mar 15, 2017 at 8:00 AM, Andrew G. Malis=
 <span dir=3D"ltr">
&lt;<a href=3D"mailto:agmalis@gmail.com" target=3D"_blank">agmalis@gmail.co=
m</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div dir=3D"ltr"><span style=3D"font-size:12.800000190734863px">Having hear=
d from all of the authors regarding IPR, this starts the WG=C2=A0</span><sp=
an class=3D"m_-3839528689773843664m_-837610214042538157gmail-m_335478122071=
9700155gmail-il" style=3D"font-size:12.800000190734863px">last</span><span =
style=3D"font-size:12.800000190734863px">=C2=A0</span><span class=3D"m_-383=
9528689773843664m_-837610214042538157gmail-m_3354781220719700155gmail-il" s=
tyle=3D"font-size:12.800000190734863px">call</span><span style=3D"font-size=
:12.800000190734863px">=C2=A0for=C2=A0</span><a href=3D"https://tools.ietf.=
org/html/draft-ietf-pals-p2mp-pw-lsp-ping-01" style=3D"font-size:12.8000001=
90734863px" target=3D"_blank">https://tools<wbr>.ietf.org/html/draft-ietf-<=
wbr>pals-p2mp-pw-lsp-ping-01</a><span style=3D"font-size:12.800000190734863=
px">=C2=A0.
 Because it=E2=80=99s over IETF week, this=C2=A0</span><span class=3D"m_-38=
39528689773843664m_-837610214042538157gmail-m_3354781220719700155gmail-il" =
style=3D"font-size:12.800000190734863px">last</span><span style=3D"font-siz=
e:12.800000190734863px">=C2=A0</span><span class=3D"m_-3839528689773843664m=
_-837610214042538157gmail-m_3354781220719700155gmail-il" style=3D"font-size=
:12.800000190734863px">call</span><span style=3D"font-size:12.8000001907348=
63px">=C2=A0will=C2=A0</span><span class=3D"m_-3839528689773843664m_-837610=
214042538157gmail-m_3354781220719700155gmail-il" style=3D"font-size:12.8000=
00190734863px">last</span><span style=3D"font-size:12.800000190734863px">=
=C2=A0for
 three weeks, ending on April 5. Please review the draft and send all comme=
nts to=C2=A0</span><a href=3D"mailto:pals@ietf.org" style=3D"font-size:12.8=
00000190734863px" target=3D"_blank">pals@ietf.org</a><span style=3D"font-si=
ze:12.800000190734863px">.</span><br>
<div class=3D"gmail_quote">
<div dir=3D"ltr">
<div style=3D"font-size:12.800000190734863px"><br>
</div>
<div style=3D"font-size:12.800000190734863px">Thanks,</div>
<div style=3D"font-size:12.800000190734863px">Andy</div>
<div style=3D"font-size:12.800000190734863px"><br>
</div>
</div>
</div>
</div>
<br>
______________________________<wbr>_________________<br>
Pals mailing list<br>
<a href=3D"mailto:Pals@ietf.org" target=3D"_blank">Pals@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/pals" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/pals</a><br>
<br>
</blockquote>
</div>
<br>
</div>
</div>
</blockquote>
</div>
<br>
</span></div>
</div>
</div>

</blockquote></div><br></div>

--001a113d31a6a08a81054df7bf57--


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Parag and Greg,

I=E2=80=99ve just reviewed the update, and it looks good except for one thi=
ng - now
that there are two options for encapsulation, to ensure interoperability,
we need to choose at least one (or both) as a MUST for implementation. I
would propose at least the GAL Label encapsulation as a MUST, and I prefer
that both be required (but I won=E2=80=99t insist if you don=E2=80=99t agre=
e).

So we need to add a sentence to section 5 along the lines of =E2=80=9CTo en=
sure
interoperability, implementations of this document MUST support the GAL
Label encapsulation.=E2=80=9D Or =E2=80=9CTo ensure interoperability, imple=
mentations of
this document MUST support both encapsulations.=E2=80=9D

Thanks,
Andy


On Tue, Apr 25, 2017 at 2:22 AM, Greg Mirsky <gregimirsky@gmail.com> wrote:

> Hi Parag,
> thank you for your thoughtful consideration of my comments. I've checked
> the update and have found all my comments being addressed.
>
> Regards,
> Greg
>
> On Wed, Apr 19, 2017 at 9:45 AM, Parag Jain (paragj) <paragj@cisco.com>
> wrote:
>
>> Hi Greg,
>>
>> Thanks for your comments. Please see inline.
>>
>>
>> On Mar 15, 2017, at 11:57 AM, Greg Mirsky <gregimirsky@gmail.com> wrote:
>>
>> Dear Authors,
>> please find my WG LC comments below:
>>
>>    - per RFC 5586 GAL can be used to identify OAM payload but it is not
>>    necessary for PW. We can use PW ACH per RFC 4385 without putting GAL =
in;
>>
>> pj> yes, both the options can be supported - GAL label as well as PW ACH=
.
>> Will update the draft to add PW ACH.
>>
>>
>>    - it is not clear what "IP ACH Channel header" is. Is it IP ACH
>>    Channel type? But MPLS G-ACh Types registry
>>    <http://www.iana.org/assignments/g-ach-parameters/g-ach-parameters.xh=
tml#mpls-g-ach-types> doesn't
>>    have IP ACH type but IPv4 (0x0021) and IPv6 (0x0057) types.
>>
>> pj> You are right, by IP ACH channel type we mean both ipv4 and ipv6 ACH=
.
>> Will update the draft.
>>
>> Thanks
>> Parag
>>
>> Regards,
>> Greg
>>
>> On Wed, Mar 15, 2017 at 8:00 AM, Andrew G. Malis <agmalis@gmail.com>
>> wrote:
>>
>>> Having heard from all of the authors regarding IPR, this starts the WG
>>> last call for https://tools.ietf.org/html/draft-ietf-pals
>>> -p2mp-pw-lsp-ping-01 . Because it=E2=80=99s over IETF week, this last c=
all will
>>> last for three weeks, ending on April 5. Please review the draft and
>>> send all comments to pals@ietf.org.
>>>
>>> Thanks,
>>> Andy
>>>
>>>
>>> _______________________________________________
>>> Pals mailing list
>>> Pals@ietf.org
>>> https://www.ietf.org/mailman/listinfo/pals
>>>
>>>
>>
>>
>

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<div dir=3D"ltr">Parag and Greg,<div><br></div><div>I=E2=80=99ve just revie=
wed the update, and it looks good except for one thing - now that there are=
 two options for encapsulation, to ensure interoperability, we need to choo=
se at least one (or both) as a MUST for implementation. I would propose at =
least the GAL Label encapsulation as a MUST, and I prefer that both be requ=
ired (but I won=E2=80=99t insist if you don=E2=80=99t agree).=C2=A0</div><d=
iv><br></div><div>So we need to add a sentence to section 5 along the lines=
 of =E2=80=9CTo ensure interoperability, implementations of this document M=
UST support the GAL Label encapsulation.=E2=80=9D Or =E2=80=9CTo ensure int=
eroperability, implementations of this document MUST support both encapsula=
tions.=E2=80=9D</div><div><br></div><div>Thanks,</div><div>Andy</div><div><=
br></div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On=
 Tue, Apr 25, 2017 at 2:22 AM, Greg Mirsky <span dir=3D"ltr">&lt;<a href=3D=
"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.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"><div dir=3D"ltr">Hi Par=
ag,<div>thank you for your thoughtful consideration of my comments. I&#39;v=
e checked the update and have found all my comments being addressed.=C2=A0<=
/div><div><br></div><div>Regards,</div><div>Greg</div></div><div class=3D"H=
OEnZb"><div class=3D"h5"><div class=3D"gmail_extra"><br><div class=3D"gmail=
_quote">On Wed, Apr 19, 2017 at 9:45 AM, Parag Jain (paragj) <span dir=3D"l=
tr">&lt;<a href=3D"mailto:paragj@cisco.com" target=3D"_blank">paragj@cisco.=
com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"mar=
gin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">



<div style=3D"word-wrap:break-word">
Hi Greg,
<div><br>
</div>
<div>Thanks for your comments. Please see inline.<br>
<div><br>
</div>
<div><br>
<div><span>
<blockquote type=3D"cite">
<div>On Mar 15, 2017, at 11:57 AM, Greg Mirsky &lt;<a href=3D"mailto:gregim=
irsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt; wrote:</di=
v>
<br class=3D"m_-3376144652819198125m_-3839528689773843664Apple-interchange-=
newline">
<div>
<div dir=3D"ltr">Dear Authors,
<div>please find my WG LC comments below:</div>
<div>
<ul>
<li>per RFC 5586 GAL can be used to identify OAM payload but it is not nece=
ssary for PW. We can use PW ACH per RFC 4385 without putting GAL in;</li></=
ul>
</div>
</div>
</div>
</blockquote></span>
pj&gt; yes, both the options can be supported - GAL label as well as PW ACH=
. Will update the draft to add PW ACH.<span><br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">
<div>
<ul>
<li>it is not clear what &quot;IP ACH Channel header&quot; is. Is it IP ACH=
 Channel type? But=C2=A0<a href=3D"http://www.iana.org/assignments/g-ach-pa=
rameters/g-ach-parameters.xhtml#mpls-g-ach-types" target=3D"_blank">MPLS G-=
ACh Types registry</a>=C2=A0doesn&#39;t have IP ACH type but
 IPv4 (<span style=3D"font-family:&#39;open sans&#39;,&#39;helvetica neue&#=
39;,helvetica,sans-serif;font-size:13.3333px;text-align:-webkit-center">0x0=
021)=C2=A0</span>and IPv6 (<span style=3D"font-family:&#39;open sans&#39;,&=
#39;helvetica neue&#39;,helvetica,sans-serif;font-size:13.3333px;text-align=
:-webkit-center">0x0057)=C2=A0</span>types.=C2=A0</li></ul>
</div>
</div>
</div>
</blockquote></span>
pj&gt; You are right, by IP ACH channel type we mean both ipv4 and ipv6 ACH=
. Will update the draft.<br>
<br>
Thanks<span class=3D"m_-3376144652819198125HOEnZb"><font color=3D"#888888">=
<br>
Parag</font></span></div><span>
<div><br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">
<div>
<div>Regards,</div>
</div>
<div>Greg</div>
</div>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Wed, Mar 15, 2017 at 8:00 AM, Andrew G. Malis=
 <span dir=3D"ltr">
&lt;<a href=3D"mailto:agmalis@gmail.com" target=3D"_blank">agmalis@gmail.co=
m</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div dir=3D"ltr"><span style=3D"font-size:12.800000190734863px">Having hear=
d from all of the authors regarding IPR, this starts the WG=C2=A0</span><sp=
an class=3D"m_-3376144652819198125m_-3839528689773843664m_-8376102140425381=
57gmail-m_3354781220719700155gmail-il" style=3D"font-size:12.80000019073486=
3px">last</span><span style=3D"font-size:12.800000190734863px">=C2=A0</span=
><span class=3D"m_-3376144652819198125m_-3839528689773843664m_-837610214042=
538157gmail-m_3354781220719700155gmail-il" style=3D"font-size:12.8000001907=
34863px">call</span><span style=3D"font-size:12.800000190734863px">=C2=A0fo=
r=C2=A0</span><a href=3D"https://tools.ietf.org/html/draft-ietf-pals-p2mp-p=
w-lsp-ping-01" style=3D"font-size:12.800000190734863px" target=3D"_blank">h=
ttps://tools<wbr>.ietf.org/html/draft-ietf-pals<wbr>-p2mp-pw-lsp-ping-01</a=
><span style=3D"font-size:12.800000190734863px">=C2=A0.
 Because it=E2=80=99s over IETF week, this=C2=A0</span><span class=3D"m_-33=
76144652819198125m_-3839528689773843664m_-837610214042538157gmail-m_3354781=
220719700155gmail-il" style=3D"font-size:12.800000190734863px">last</span><=
span style=3D"font-size:12.800000190734863px">=C2=A0</span><span class=3D"m=
_-3376144652819198125m_-3839528689773843664m_-837610214042538157gmail-m_335=
4781220719700155gmail-il" style=3D"font-size:12.800000190734863px">call</sp=
an><span style=3D"font-size:12.800000190734863px">=C2=A0will=C2=A0</span><s=
pan class=3D"m_-3376144652819198125m_-3839528689773843664m_-837610214042538=
157gmail-m_3354781220719700155gmail-il" style=3D"font-size:12.8000001907348=
63px">last</span><span style=3D"font-size:12.800000190734863px">=C2=A0for
 three weeks, ending on April 5. Please review the draft and send all comme=
nts to=C2=A0</span><a href=3D"mailto:pals@ietf.org" style=3D"font-size:12.8=
00000190734863px" target=3D"_blank">pals@ietf.org</a><span style=3D"font-si=
ze:12.800000190734863px">.</span><br>
<div class=3D"gmail_quote">
<div dir=3D"ltr">
<div style=3D"font-size:12.800000190734863px"><br>
</div>
<div style=3D"font-size:12.800000190734863px">Thanks,</div>
<div style=3D"font-size:12.800000190734863px">Andy</div>
<div style=3D"font-size:12.800000190734863px"><br>
</div>
</div>
</div>
</div>
<br>
______________________________<wbr>_________________<br>
Pals mailing list<br>
<a href=3D"mailto:Pals@ietf.org" target=3D"_blank">Pals@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/pals" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/pals</a><br>
<br>
</blockquote>
</div>
<br>
</div>
</div>
</blockquote>
</div>
<br>
</span></div>
</div>
</div>

</blockquote></div><br></div>
</div></div></blockquote></div><br></div>

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Hi Andy,
indeed, the interoperability is the new issue after we've introduced two
options. For PW I'd consider use of PW ACH as MUST and GAL as SHOULD. But
MUST for both makes sense as well.

Regards,
Greg

On Tue, Apr 25, 2017 at 6:46 AM, Andrew G. Malis <agmalis@gmail.com> wrote:

> Parag and Greg,
>
> I=E2=80=99ve just reviewed the update, and it looks good except for one t=
hing -
> now that there are two options for encapsulation, to ensure
> interoperability, we need to choose at least one (or both) as a MUST for
> implementation. I would propose at least the GAL Label encapsulation as a
> MUST, and I prefer that both be required (but I won=E2=80=99t insist if y=
ou don=E2=80=99t
> agree).
>
> So we need to add a sentence to section 5 along the lines of =E2=80=9CTo =
ensure
> interoperability, implementations of this document MUST support the GAL
> Label encapsulation.=E2=80=9D Or =E2=80=9CTo ensure interoperability, imp=
lementations of
> this document MUST support both encapsulations.=E2=80=9D
>
> Thanks,
> Andy
>
>
> On Tue, Apr 25, 2017 at 2:22 AM, Greg Mirsky <gregimirsky@gmail.com>
> wrote:
>
>> Hi Parag,
>> thank you for your thoughtful consideration of my comments. I've checked
>> the update and have found all my comments being addressed.
>>
>> Regards,
>> Greg
>>
>> On Wed, Apr 19, 2017 at 9:45 AM, Parag Jain (paragj) <paragj@cisco.com>
>> wrote:
>>
>>> Hi Greg,
>>>
>>> Thanks for your comments. Please see inline.
>>>
>>>
>>> On Mar 15, 2017, at 11:57 AM, Greg Mirsky <gregimirsky@gmail.com> wrote=
:
>>>
>>> Dear Authors,
>>> please find my WG LC comments below:
>>>
>>>    - per RFC 5586 GAL can be used to identify OAM payload but it is not
>>>    necessary for PW. We can use PW ACH per RFC 4385 without putting GAL=
 in;
>>>
>>> pj> yes, both the options can be supported - GAL label as well as PW
>>> ACH. Will update the draft to add PW ACH.
>>>
>>>
>>>    - it is not clear what "IP ACH Channel header" is. Is it IP ACH
>>>    Channel type? But MPLS G-ACh Types registry
>>>    <http://www.iana.org/assignments/g-ach-parameters/g-ach-parameters.x=
html#mpls-g-ach-types> doesn't
>>>    have IP ACH type but IPv4 (0x0021) and IPv6 (0x0057) types.
>>>
>>> pj> You are right, by IP ACH channel type we mean both ipv4 and ipv6
>>> ACH. Will update the draft.
>>>
>>> Thanks
>>> Parag
>>>
>>> Regards,
>>> Greg
>>>
>>> On Wed, Mar 15, 2017 at 8:00 AM, Andrew G. Malis <agmalis@gmail.com>
>>> wrote:
>>>
>>>> Having heard from all of the authors regarding IPR, this starts the WG
>>>> last call for https://tools.ietf.org/html/draft-ietf-pals
>>>> -p2mp-pw-lsp-ping-01 . Because it=E2=80=99s over IETF week, this last =
call
>>>>  will last for three weeks, ending on April 5. Please review the draft
>>>> and send all comments to pals@ietf.org.
>>>>
>>>> Thanks,
>>>> Andy
>>>>
>>>>
>>>> _______________________________________________
>>>> Pals mailing list
>>>> Pals@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/pals
>>>>
>>>>
>>>
>>>
>>
>

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<div dir=3D"ltr">Hi Andy,<div>indeed, the interoperability is the new issue=
 after we&#39;ve introduced two options. For PW I&#39;d consider use of PW =
ACH as MUST and GAL as SHOULD. But MUST for both makes sense as well.</div>=
<div><br></div><div>Regards,</div><div>Greg</div></div><div class=3D"gmail_=
extra"><br><div class=3D"gmail_quote">On Tue, Apr 25, 2017 at 6:46 AM, Andr=
ew G. Malis <span dir=3D"ltr">&lt;<a href=3D"mailto:agmalis@gmail.com" targ=
et=3D"_blank">agmalis@gmail.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"><div dir=3D"ltr">Parag and Greg,<div><br></div><div>I=E2=80=
=99ve just reviewed the update, and it looks good except for one thing - no=
w that there are two options for encapsulation, to ensure interoperability,=
 we need to choose at least one (or both) as a MUST for implementation. I w=
ould propose at least the GAL Label encapsulation as a MUST, and I prefer t=
hat both be required (but I won=E2=80=99t insist if you don=E2=80=99t agree=
).=C2=A0</div><div><br></div><div>So we need to add a sentence to section 5=
 along the lines of =E2=80=9CTo ensure interoperability, implementations of=
 this document MUST support the GAL Label encapsulation.=E2=80=9D Or =E2=80=
=9CTo ensure interoperability, implementations of this document MUST suppor=
t both encapsulations.=E2=80=9D</div><div><br></div><div>Thanks,</div><div>=
Andy</div><div><br></div></div><div class=3D"HOEnZb"><div class=3D"h5"><div=
 class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Tue, Apr 25, 2017 =
at 2:22 AM, Greg Mirsky <span dir=3D"ltr">&lt;<a href=3D"mailto:gregimirsky=
@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt;</span> wrote:<b=
r><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:=
1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Hi Parag,<div>thank you f=
or your thoughtful consideration of my comments. I&#39;ve checked the updat=
e and have found all my comments being addressed.=C2=A0</div><div><br></div=
><div>Regards,</div><div>Greg</div></div><div class=3D"m_678564924664474054=
7HOEnZb"><div class=3D"m_6785649246644740547h5"><div class=3D"gmail_extra">=
<br><div class=3D"gmail_quote">On Wed, Apr 19, 2017 at 9:45 AM, Parag Jain =
(paragj) <span dir=3D"ltr">&lt;<a href=3D"mailto:paragj@cisco.com" target=
=3D"_blank">paragj@cisco.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">



<div style=3D"word-wrap:break-word">
Hi Greg,
<div><br>
</div>
<div>Thanks for your comments. Please see inline.<br>
<div><br>
</div>
<div><br>
<div><span>
<blockquote type=3D"cite">
<div>On Mar 15, 2017, at 11:57 AM, Greg Mirsky &lt;<a href=3D"mailto:gregim=
irsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt; wrote:</di=
v>
<br class=3D"m_6785649246644740547m_-3376144652819198125m_-3839528689773843=
664Apple-interchange-newline">
<div>
<div dir=3D"ltr">Dear Authors,
<div>please find my WG LC comments below:</div>
<div>
<ul>
<li>per RFC 5586 GAL can be used to identify OAM payload but it is not nece=
ssary for PW. We can use PW ACH per RFC 4385 without putting GAL in;</li></=
ul>
</div>
</div>
</div>
</blockquote></span>
pj&gt; yes, both the options can be supported - GAL label as well as PW ACH=
. Will update the draft to add PW ACH.<span><br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">
<div>
<ul>
<li>it is not clear what &quot;IP ACH Channel header&quot; is. Is it IP ACH=
 Channel type? But=C2=A0<a href=3D"http://www.iana.org/assignments/g-ach-pa=
rameters/g-ach-parameters.xhtml#mpls-g-ach-types" target=3D"_blank">MPLS G-=
ACh Types registry</a>=C2=A0doesn&#39;t have IP ACH type but
 IPv4 (<span style=3D"font-family:&#39;open sans&#39;,&#39;helvetica neue&#=
39;,helvetica,sans-serif;font-size:13.3333px;text-align:-webkit-center">0x0=
021)=C2=A0</span>and IPv6 (<span style=3D"font-family:&#39;open sans&#39;,&=
#39;helvetica neue&#39;,helvetica,sans-serif;font-size:13.3333px;text-align=
:-webkit-center">0x0057)=C2=A0</span>types.=C2=A0</li></ul>
</div>
</div>
</div>
</blockquote></span>
pj&gt; You are right, by IP ACH channel type we mean both ipv4 and ipv6 ACH=
. Will update the draft.<br>
<br>
Thanks<span class=3D"m_6785649246644740547m_-3376144652819198125HOEnZb"><fo=
nt color=3D"#888888"><br>
Parag</font></span></div><span>
<div><br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">
<div>
<div>Regards,</div>
</div>
<div>Greg</div>
</div>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Wed, Mar 15, 2017 at 8:00 AM, Andrew G. Malis=
 <span dir=3D"ltr">
&lt;<a href=3D"mailto:agmalis@gmail.com" target=3D"_blank">agmalis@gmail.co=
m</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div dir=3D"ltr"><span style=3D"font-size:12.800000190734863px">Having hear=
d from all of the authors regarding IPR, this starts the WG=C2=A0</span><sp=
an class=3D"m_6785649246644740547m_-3376144652819198125m_-38395286897738436=
64m_-837610214042538157gmail-m_3354781220719700155gmail-il" style=3D"font-s=
ize:12.800000190734863px">last</span><span style=3D"font-size:12.8000001907=
34863px">=C2=A0</span><span class=3D"m_6785649246644740547m_-33761446528191=
98125m_-3839528689773843664m_-837610214042538157gmail-m_3354781220719700155=
gmail-il" style=3D"font-size:12.800000190734863px">call</span><span style=
=3D"font-size:12.800000190734863px">=C2=A0for=C2=A0</span><a href=3D"https:=
//tools.ietf.org/html/draft-ietf-pals-p2mp-pw-lsp-ping-01" style=3D"font-si=
ze:12.800000190734863px" target=3D"_blank">https://tools<wbr>.ietf.org/html=
/draft-ietf-pals<wbr>-p2mp-pw-lsp-ping-01</a><span style=3D"font-size:12.80=
0000190734863px">=C2=A0.
 Because it=E2=80=99s over IETF week, this=C2=A0</span><span class=3D"m_678=
5649246644740547m_-3376144652819198125m_-3839528689773843664m_-837610214042=
538157gmail-m_3354781220719700155gmail-il" style=3D"font-size:12.8000001907=
34863px">last</span><span style=3D"font-size:12.800000190734863px">=C2=A0</=
span><span class=3D"m_6785649246644740547m_-3376144652819198125m_-383952868=
9773843664m_-837610214042538157gmail-m_3354781220719700155gmail-il" style=
=3D"font-size:12.800000190734863px">call</span><span style=3D"font-size:12.=
800000190734863px">=C2=A0will=C2=A0</span><span class=3D"m_6785649246644740=
547m_-3376144652819198125m_-3839528689773843664m_-837610214042538157gmail-m=
_3354781220719700155gmail-il" style=3D"font-size:12.800000190734863px">last=
</span><span style=3D"font-size:12.800000190734863px">=C2=A0for
 three weeks, ending on April 5. Please review the draft and send all comme=
nts to=C2=A0</span><a href=3D"mailto:pals@ietf.org" style=3D"font-size:12.8=
00000190734863px" target=3D"_blank">pals@ietf.org</a><span style=3D"font-si=
ze:12.800000190734863px">.</span><br>
<div class=3D"gmail_quote">
<div dir=3D"ltr">
<div style=3D"font-size:12.800000190734863px"><br>
</div>
<div style=3D"font-size:12.800000190734863px">Thanks,</div>
<div style=3D"font-size:12.800000190734863px">Andy</div>
<div style=3D"font-size:12.800000190734863px"><br>
</div>
</div>
</div>
</div>
<br>
______________________________<wbr>_________________<br>
Pals mailing list<br>
<a href=3D"mailto:Pals@ietf.org" target=3D"_blank">Pals@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/pals" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/pals</a><br>
<br>
</blockquote>
</div>
<br>
</div>
</div>
</blockquote>
</div>
<br>
</span></div>
</div>
</div>

</blockquote></div><br></div>
</div></div></blockquote></div><br></div>
</div></div></blockquote></div><br></div>

--001a113e451633603c054dfe3096--


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From: "Parag Jain (paragj)" <paragj@cisco.com>
To: Greg Mirsky <gregimirsky@gmail.com>, "Andrew G. Malis" <agmalis@gmail.com>
CC: "pals@ietf.org" <pals@ietf.org>, "draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org" <draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org>, Sami Boutros <sboutros@vmware.com>
Thread-Topic: [Pals] PALS Working Group last call for draft-ietf-pals-p2mp-pw-lsp-ping-01
Thread-Index: AQHSnZ0bLiasaCuyWk6hfx6JUGBDrqGWUZgAgDcO3YCACMABAIAAfAyAgAAEvgD///BKAA==
Date: Tue, 25 Apr 2017 17:07:14 +0000
Message-ID: <469CD11C-31B2-47CB-AB02-4ACFF10DA22C@cisco.com>
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--_000_469CD11C31B247CBAB024ACFF10DA22Cciscocom_--


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From: "Andrew G. Malis" <agmalis@gmail.com>
Date: Tue, 25 Apr 2017 14:31:18 -0400
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To: "Parag Jain (paragj)" <paragj@cisco.com>
Cc: Greg Mirsky <gregimirsky@gmail.com>, "pals@ietf.org" <pals@ietf.org>,  "draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org" <draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org>,  Sami Boutros <sboutros@vmware.com>
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Subject: Re: [Pals] PALS Working Group last call for draft-ietf-pals-p2mp-pw-lsp-ping-01
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--001a113e45163c6103054e01ef72
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Parag,

Thanks!

Cheers,
Andy


On Tue, Apr 25, 2017 at 1:07 PM, Parag Jain (paragj) <paragj@cisco.com>
wrote:

> Hi Greg and Andy
>
>
>
> Sami and I prefer to go with =E2=80=9CMUST for both=E2=80=9D. I=E2=80=99l=
l update the draft and
> submit a new version.
>
>
>
> Thanks
>
> Parag
>
>
>
> *From: *Greg Mirsky <gregimirsky@gmail.com>
> *Date: *Tuesday, April 25, 2017 at 10:03 AM
> *To: *"Andrew G. Malis" <agmalis@gmail.com>
> *Cc: *"Parag Jain (paragj)" <paragj@cisco.com>, "pals@ietf.org" <
> pals@ietf.org>, "draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org" <
> draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org>
> *Subject: *Re: [Pals] PALS Working Group last call for
> draft-ietf-pals-p2mp-pw-lsp-ping-01
>
>
>
> Hi Andy,
>
> indeed, the interoperability is the new issue after we've introduced two
> options. For PW I'd consider use of PW ACH as MUST and GAL as SHOULD. But
> MUST for both makes sense as well.
>
>
>
> Regards,
>
> Greg
>
>
>
> On Tue, Apr 25, 2017 at 6:46 AM, Andrew G. Malis <agmalis@gmail.com>
> wrote:
>
> Parag and Greg,
>
>
>
> I=E2=80=99ve just reviewed the update, and it looks good except for one t=
hing -
> now that there are two options for encapsulation, to ensure
> interoperability, we need to choose at least one (or both) as a MUST for
> implementation. I would propose at least the GAL Label encapsulation as a
> MUST, and I prefer that both be required (but I won=E2=80=99t insist if y=
ou don=E2=80=99t
> agree).
>
>
>
> So we need to add a sentence to section 5 along the lines of =E2=80=9CTo =
ensure
> interoperability, implementations of this document MUST support the GAL
> Label encapsulation.=E2=80=9D Or =E2=80=9CTo ensure interoperability, imp=
lementations of
> this document MUST support both encapsulations.=E2=80=9D
>
>
>
> Thanks,
>
> Andy
>
>
>
>
>
> On Tue, Apr 25, 2017 at 2:22 AM, Greg Mirsky <gregimirsky@gmail.com>
> wrote:
>
> Hi Parag,
>
> thank you for your thoughtful consideration of my comments. I've checked
> the update and have found all my comments being addressed.
>
>
>
> Regards,
>
> Greg
>
>
>
> On Wed, Apr 19, 2017 at 9:45 AM, Parag Jain (paragj) <paragj@cisco.com>
> wrote:
>
> Hi Greg,
>
>
>
> Thanks for your comments. Please see inline.
>
>
>
>
>
> On Mar 15, 2017, at 11:57 AM, Greg Mirsky <gregimirsky@gmail.com> wrote:
>
>
>
> Dear Authors,
>
> please find my WG LC comments below:
>
>    - per RFC 5586 GAL can be used to identify OAM payload but it is not
>    necessary for PW. We can use PW ACH per RFC 4385 without putting GAL i=
n;
>
> pj> yes, both the options can be supported - GAL label as well as PW ACH.
> Will update the draft to add PW ACH.
>
>
>    - it is not clear what "IP ACH Channel header" is. Is it IP ACH
>    Channel type? But MPLS G-ACh Types registry
>    <http://www.iana.org/assignments/g-ach-parameters/g-ach-parameters.xht=
ml#mpls-g-ach-types> doesn't
>    have IP ACH type but IPv4 (0x0021) and IPv6 (0x0057) types.
>
> pj> You are right, by IP ACH channel type we mean both ipv4 and ipv6 ACH.
> Will update the draft.
>
> Thanks
> Parag
>
>
>
> Regards,
>
> Greg
>
>
>
> On Wed, Mar 15, 2017 at 8:00 AM, Andrew G. Malis <agmalis@gmail.com>
> wrote:
>
> Having heard from all of the authors regarding IPR, this starts the WG
> last call for https://tools.ietf.org/html/draft-
> ietf-pals-p2mp-pw-lsp-ping-01 . Because it=E2=80=99s over IETF week, this=
 last
> call will last for three weeks, ending on April 5. Please review the
> draft and send all comments to pals@ietf.org.
>
>
>
> Thanks,
>
> Andy
>
>
>
>
> _______________________________________________
> Pals mailing list
> Pals@ietf.org
> https://www.ietf.org/mailman/listinfo/pals
>
>
>
>
>
>
>
>
>
>
>

--001a113e45163c6103054e01ef72
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Parag,<div><br></div><div>Thanks!</div><div><br></div><div=
>Cheers,</div><div>Andy</div><div><br></div></div><div class=3D"gmail_extra=
"><br><div class=3D"gmail_quote">On Tue, Apr 25, 2017 at 1:07 PM, Parag Jai=
n (paragj) <span dir=3D"ltr">&lt;<a href=3D"mailto:paragj@cisco.com" target=
=3D"_blank">paragj@cisco.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">







<div bgcolor=3D"white" lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"m_7735452899145331736WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:Calibri"=
>Hi Greg and Andy<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:Calibri"=
><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:Calibri"=
>Sami and I prefer to go with =E2=80=9CMUST for both=E2=80=9D. I=E2=80=99ll=
 update the draft and submit a new version.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:Calibri"=
><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:Calibri"=
>Thanks<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:Calibri"=
>Parag<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:Calibri"=
><u></u>=C2=A0<u></u></span></p>
<div style=3D"border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span style=3D"font-family:Calibri;color:black">F=
rom: </span>
</b><span style=3D"font-family:Calibri;color:black">Greg Mirsky &lt;<a href=
=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</=
a>&gt;<br>
<b>Date: </b>Tuesday, April 25, 2017 at 10:03 AM<br>
<b>To: </b>&quot;Andrew G. Malis&quot; &lt;<a href=3D"mailto:agmalis@gmail.=
com" target=3D"_blank">agmalis@gmail.com</a>&gt;<br>
<b>Cc: </b>&quot;Parag Jain (paragj)&quot; &lt;<a href=3D"mailto:paragj@cis=
co.com" target=3D"_blank">paragj@cisco.com</a>&gt;, &quot;<a href=3D"mailto=
:pals@ietf.org" target=3D"_blank">pals@ietf.org</a>&quot; &lt;<a href=3D"ma=
ilto:pals@ietf.org" target=3D"_blank">pals@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org" target=3D"_blank">dra=
ft-ietf-pals-p2mp-pw-lsp-<wbr>ping@ietf.org</a>&quot; &lt;<a href=3D"mailto=
:draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org" target=3D"_blank">draft-ietf-pa=
ls-p2mp-pw-lsp-<wbr>ping@ietf.org</a>&gt;<span class=3D""><br>
<b>Subject: </b>Re: [Pals] PALS Working Group last call for draft-ietf-pals=
-p2mp-pw-lsp-<wbr>ping-01<u></u><u></u></span></span></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Hi Andy, <u></u><u></u></p><div><div class=3D"h5">
<div>
<p class=3D"MsoNormal">indeed, the interoperability is the new issue after =
we&#39;ve introduced two options. For PW I&#39;d consider use of PW ACH as =
MUST and GAL as SHOULD. But MUST for both makes sense as well.<u></u><u></u=
></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Greg<u></u><u></u></p>
</div>
</div></div></div><div><div class=3D"h5">
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">On Tue, Apr 25, 2017 at 6:46 AM, Andrew G. Malis &lt=
;<a href=3D"mailto:agmalis@gmail.com" target=3D"_blank">agmalis@gmail.com</=
a>&gt; wrote:<u></u><u></u></p>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0c=
m 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<p class=3D"MsoNormal">Parag and Greg, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">I=E2=80=99ve just reviewed the update, and it looks =
good except for one thing - now that there are two options for encapsulatio=
n, to ensure interoperability, we need to choose at least one (or both) as =
a MUST for implementation. I would propose
 at least the GAL Label encapsulation as a MUST, and I prefer that both be =
required (but I won=E2=80=99t insist if you don=E2=80=99t agree).=C2=A0<u><=
/u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So we need to add a sentence to section 5 along the =
lines of =E2=80=9CTo ensure interoperability, implementations of this docum=
ent MUST support the GAL Label encapsulation.=E2=80=9D Or =E2=80=9CTo ensur=
e interoperability, implementations of this document MUST
 support both encapsulations.=E2=80=9D<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Andy<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">On Tue, Apr 25, 2017 at 2:22 AM, Greg Mirsky &lt;<a =
href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.c=
om</a>&gt; wrote:<u></u><u></u></p>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0c=
m 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<p class=3D"MsoNormal">Hi Parag, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal">thank you for your thoughtful consideration of my co=
mments. I&#39;ve checked the update and have found all my comments being ad=
dressed.=C2=A0<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Greg<u></u><u></u></p>
</div>
</div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">On Wed, Apr 19, 2017 at 9:45 AM, Parag Jain (paragj)=
 &lt;<a href=3D"mailto:paragj@cisco.com" target=3D"_blank">paragj@cisco.com=
</a>&gt; wrote:<u></u><u></u></p>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0c=
m 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<p class=3D"MsoNormal">Hi Greg, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks for your comments. Please see inline.<u></u><=
u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class=3D"MsoNormal">On Mar 15, 2017, at 11:57 AM, Greg Mirsky &lt;<a hre=
f=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com<=
/a>&gt; wrote:<u></u><u></u></p>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal">Dear Authors, <u></u><u></u></p>
<div>
<p class=3D"MsoNormal">please find my WG LC comments below:<u></u><u></u></=
p>
</div>
<div>
<ul type=3D"disc">
<li class=3D"MsoNormal">
per RFC 5586 GAL can be used to identify OAM payload but it is not necessar=
y for PW. We can use PW ACH per RFC 4385 without putting GAL in;<u></u><u><=
/u></li></ul>
</div>
</div>
</div>
</blockquote>
<p class=3D"MsoNormal">pj&gt; yes, both the options can be supported - GAL =
label as well as PW ACH. Will update the draft to add PW ACH.<br>
<br>
<u></u><u></u></p>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<div>
<ul type=3D"disc">
<li class=3D"MsoNormal">
it is not clear what &quot;IP ACH Channel header&quot; is. Is it IP ACH Cha=
nnel type? But=C2=A0<a href=3D"http://www.iana.org/assignments/g-ach-parame=
ters/g-ach-parameters.xhtml#mpls-g-ach-types" target=3D"_blank">MPLS G-ACh =
Types registry</a>=C2=A0doesn&#39;t have IP ACH type but IPv4
 (<span style=3D"font-size:10.0pt;font-family:Helvetica">0x0021)=C2=A0</spa=
n>and IPv6 (<span style=3D"font-size:10.0pt;font-family:Helvetica">0x0057)=
=C2=A0</span>types.=C2=A0<u></u><u></u></li></ul>
</div>
</div>
</div>
</blockquote>
<p class=3D"MsoNormal">pj&gt; You are right, by IP ACH channel type we mean=
 both ipv4 and ipv6 ACH. Will update the draft.<br>
<br>
Thanks<span style=3D"color:#888888"><br>
<span class=3D"m_7735452899145331736m6785649246644740547m-33761446528191981=
25hoenzb">Parag</span></span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><br>
<br>
<u></u><u></u></p>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal">Regards,<u></u><u></u></p>
</div>
</div>
<div>
<p class=3D"MsoNormal">Greg<u></u><u></u></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">On Wed, Mar 15, 2017 at 8:00 AM, Andrew G. Malis &lt=
;<a href=3D"mailto:agmalis@gmail.com" target=3D"_blank">agmalis@gmail.com</=
a>&gt; wrote:<u></u><u></u></p>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0c=
m 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.5pt">Having heard from al=
l of the authors regarding IPR, this starts the WG=C2=A0<span class=3D"m_77=
35452899145331736m6785649246644740547m-3376144652819198125m-383952868977384=
3664m-837610214042538157gmail-m3354781220719700155gmail-il">last</span>=C2=
=A0<span class=3D"m_7735452899145331736m6785649246644740547m-33761446528191=
98125m-3839528689773843664m-837610214042538157gmail-m3354781220719700155gma=
il-il">call</span>=C2=A0for=C2=A0</span><a href=3D"https://tools.ietf.org/h=
tml/draft-ietf-pals-p2mp-pw-lsp-ping-01" target=3D"_blank"><span style=3D"f=
ont-size:9.5pt">https://<wbr>tools.ietf.org/html/draft-<wbr>ietf-pals-p2mp-=
pw-lsp-ping-01</span></a><span style=3D"font-size:9.5pt">=C2=A0<wbr>.
 Because it=E2=80=99s over IETF week, this=C2=A0<span class=3D"m_7735452899=
145331736m6785649246644740547m-3376144652819198125m-3839528689773843664m-83=
7610214042538157gmail-m3354781220719700155gmail-il">last</span>=C2=A0<span =
class=3D"m_7735452899145331736m6785649246644740547m-3376144652819198125m-38=
39528689773843664m-837610214042538157gmail-m3354781220719700155gmail-il">ca=
ll</span>=C2=A0will=C2=A0<span class=3D"m_7735452899145331736m6785649246644=
740547m-3376144652819198125m-3839528689773843664m-837610214042538157gmail-m=
3354781220719700155gmail-il">last</span>=C2=A0for
 three weeks, ending on April 5. Please review the draft and send all comme=
nts to=C2=A0</span><a href=3D"mailto:pals@ietf.org" target=3D"_blank"><span=
 style=3D"font-size:9.5pt">pals@ietf.org</span></a><span style=3D"font-size=
:9.5pt">.</span><u></u><u></u></p>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.5pt"><u></u>=C2=A0<u></u>=
</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.5pt">Thanks,<u></u><u></u=
></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.5pt">Andy<u></u><u></u></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.5pt"><u></u>=C2=A0<u></u>=
</span></p>
</div>
</div>
</div>
</div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><br>
______________________________<wbr>_________________<br>
Pals mailing list<br>
<a href=3D"mailto:Pals@ietf.org" target=3D"_blank">Pals@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/pals" target=3D"_blank">ht=
tps://www.ietf.org/mailman/<wbr>listinfo/pals</a><u></u><u></u></p>
</blockquote>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</blockquote>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</blockquote>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</blockquote>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div>
</div>
</blockquote>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div></div></div>
</div>

</blockquote></div><br></div>

--001a113e45163c6103054e01ef72--


From nobody Tue Apr 25 18:28:15 2017
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Subject: [Pals] I-D Action: draft-ietf-pals-p2mp-pw-lsp-ping-03.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 Pseudowire And LDP-enabled Services of the IETF.

        Title           : Definition of P2MP PW TLV for LSP-Ping Mechanisms
        Authors         : Parag Jain
                          Sami Boutros
                          Sam Aldrin
	Filename        : draft-ietf-pals-p2mp-pw-lsp-ping-03.txt
	Pages           : 8
	Date            : 2017-04-25

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 IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-pals-p2mp-pw-lsp-ping/

There are also htmlized versions available at:
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https://datatracker.ietf.org/doc/html/draft-ietf-pals-p2mp-pw-lsp-ping-03

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From nobody Tue Apr 25 23:33:03 2017
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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           : Dual-Homing Coordination for MPLS Transport Profile (MPLS-TP) Pseudowires Protection
        Authors         : Weiqiang Cheng
                          Lei Wang
                          Han Li
                          Jie Dong
                          Alessandro D'Alessandro
	Filename        : draft-ietf-pals-mpls-tp-dual-homing-coordination-06.txt
	Pages           : 17
	Date            : 2017-04-25

Abstract:
   In some scenarios, MPLS Transport Profile (MPLS-TP) Pseudowires (PWs)
   (RFC 5921) may be statically configured, when a dynamic control plane
   is not available.  A fast protection mechanism for MPLS-TP PWs is
   needed to protect against the failure of an Attachment Circuit (AC),
   the failure of a Provider Edge (PE), or a failure in the Packet
   Switched Network (PSN).  The framework and typical scenarios of dual-
   homing PW local protection are described in [draft-ietf-pals-mpls-tp-
   dual-homing-protection].  This document proposes a dual-homing
   coordination mechanism for MPLS-TP PWs, which is used for state
   exchange and switchover coordination between the dual-homing PEs for
   dual-homing PW local protection.



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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           : Dual-Homing Protection for MPLS and MPLS-TP Pseudowires
        Authors         : Weiqiang Cheng
                          Lei Wang
                          Han Li
                          Shahram Davari
                          Jie Dong
	Filename        : draft-ietf-pals-mpls-tp-dual-homing-protection-06.txt
	Pages           : 11
	Date            : 2017-04-25

Abstract:
   This document describes a framework and several scenarios for a
   Pseudowire (PW) dual-homing local protection mechanism which avoids
   unnecessary switchovers and which can be used for scenarios using a
   control plane or not using a control plane.  A Dual-Node
   Interconnection (DNI) PW is used for carrying traffic between the
   dual-homing Provider Edge (PE) nodes for carrying traffic when a
   failure occurs in one of the Attachment Circuits (AC) or PWs.  This
   PW dual-homing local protection mechanism is complementary to
   existing PW protection mechanisms.


The IETF datatracker status page for this draft is:
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https://datatracker.ietf.org/doc/html/draft-ietf-pals-mpls-tp-dual-homing-protection-06

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-pals-mpls-tp-dual-homing-protection-06


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From: "Parag Jain (paragj)" <paragj@cisco.com>
To: "Andrew G. Malis" <agmalis@gmail.com>
CC: Greg Mirsky <gregimirsky@gmail.com>, "pals@ietf.org" <pals@ietf.org>, "draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org" <draft-ietf-pals-p2mp-pw-lsp-ping@ietf.org>, Sami Boutros <sboutros@vmware.com>
Thread-Topic: [Pals] PALS Working Group last call for draft-ietf-pals-p2mp-pw-lsp-ping-01
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Date: Wed, 26 Apr 2017 13:20:46 +0000
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Subject: Re: [Pals] PALS Working Group last call for draft-ietf-pals-p2mp-pw-lsp-ping-01
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--_000_CA71B1286DC64B9A9B812CB0AA5EE05Aciscocom_--


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Subject: [Pals] Protocol Action: 'Dual-Homing Coordination for MPLS Transport Profile (MPLS-TP) Pseudowires Protection' to Proposed Standard (draft-ietf-pals-mpls-tp-dual-homing-coordination-06.txt)
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The IESG has approved the following document:
- 'Dual-Homing Coordination for MPLS Transport Profile (MPLS-TP)
   Pseudowires Protection'
  (draft-ietf-pals-mpls-tp-dual-homing-coordination-06.txt) as Proposed
Standard

This document is the product of the Pseudowire And LDP-enabled Services
Working Group.

The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah
Brungard.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-pals-mpls-tp-dual-homing-coordination/





Technical Summary

  In some scenarios, MPLS Transport Profile (MPLS-TP) Pseudowires (PWs)
   (RFC 5921) may be statically configured (management plane based),
   when a dynamic control plane is not available.  A fast protection
   mechanism for MPLS-TP PWs is needed to protect against the failure of
   an Attachment Circuit (AC), the failure of a Provider Edge (PE), or a
   failure in the Packet Switched Network (PSN).  The framework and
   typical scenarios of dual-homing PW local protection are described in
   [draft-ietf-pals-mpls-tp-dual-homing-protection].  This document
   proposes a dual-homing coordination mechanism for MPLS-TP PWs, which
   is used for state exchange and switchover coordination between the
   dual-homing PEs for dual-homing PW local protection.

Working Group Summary

This was a straight-forward design process with no controversy.

The AD did discuss with the Chairs and Authors on combining
this document and the companion Informational document,
though the preference was to maintain two documents.

Document Quality

Dual homed protection is important for mobile services, and the 
 need for this is called out in BBF TR-221 " Technical Specifications 
 for MPLS in Mobile Backhaul Networks" where it remains for 
 further study.

  Please see https://www.broadband-forum.org/technical/download/TR-221.pdf

  Personnel

   Who is the Document Shepherd for this document?  Stewart Bryant
   Who is the Responsible Area Director?  Deborah Brungard


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Date: Wed, 26 Apr 2017 09:31:17 -0700
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Subject: [Pals] Document Action: 'Dual-Homing Protection for MPLS and MPLS-TP Pseudowires' to Informational RFC (draft-ietf-pals-mpls-tp-dual-homing-protection-06.txt)
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The IESG has approved the following document:
- 'Dual-Homing Protection for MPLS and MPLS-TP Pseudowires'
  (draft-ietf-pals-mpls-tp-dual-homing-protection-06.txt) as
Informational RFC

This document is the product of the Pseudowire And LDP-enabled Services
Working Group.

The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah
Brungard.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-pals-mpls-tp-dual-homing-protection/





Technical Summary

This document describes a framework and several scenarios for a
Pseudowire (PW) dual-homing local protection mechanism which avoids
unnecessary switchovers and which can be used for scenarios using a
control plane or not using a control plane.  A Dual-Node
Interconnection (DNI) PW is used for carrying traffic between the
dual-homing Provider Edge (PE) nodes for carrying traffic when a
failure occurs in one of the Attachment Circuits (AC) or PWs.  This
PW dual-homing local protection mechanism is complementary to
existing PW protection mechanisms.

Working Group Summary

This was a straight-forward design process with no controversy.

The AD discussed with the Chairs and Authors to combine this
document with the companion standards track document, the
preference was to do as two separate documents. There was
some shuffling on the content, e.g. the state diagram was moved
to the standards track document.

Document Quality

Dual homed protection is important for mobile services, and the 
need for this is called out in BBF TR-221 " Technical Specifications 
for MPLS in Mobile Backhaul Networks" where it remains for 
further study.

Please see https://www.broadband-forum.org/technical/download/TR-221.pdf

Personnel

   Who is the Document Shepherd for this document? Stewart Bryant
   Who is the Responsible Area Director?  Deborah Brungard

