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From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
To: Gregory Mirsky <gregory.mirsky@ericsson.com>, Tal Mizrahi <talmi@marvell.com>, "draft-ooamdt-rtgwg-oam-gap-analysis@tools.ietf.org" <draft-ooamdt-rtgwg-oam-gap-analysis@tools.ietf.org>, "draft-ooamdt-rtgwg-ooam-requirement@tools.ietf.org" <draft-ooamdt-rtgwg-ooam-requirement@tools.ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
Thread-Topic: Comments about Overlay OAM Drafts
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Date: Fri, 1 Jul 2016 14:20:22 +0000
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References: <7e12c3e474924b04b133da754e2f9cf8@IL-EXCH01.marvell.com> <D3955BC6.165106%naikumar@cisco.com> <48da4f66881d4accb182513b39744fc1@IL-EXCH01.marvell.com> <7347100B5761DC41A166AC17F22DF11221AB8DC9@eusaamb103.ericsson.se>
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Subject: Re: [Bier] Comments about Overlay OAM Drafts
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Hi Tal,

6.	Section 6 - certainly the OAM requirements have security implications.
For example, OAM protocols may be subject to DoS attacks and to network
recon. Some of these considerations are discussed in RFC 7276.


The draft is listing the requirements and does not discuss about any
solution or machinery. Accordingly, it does not introduce any security
implications. I think the security consideration is applicable on the
document that define the solutions. Does the below works:

"This document list the OAM requirement for various Overlay network and
does not raise any security considerations. Any document defining the
solution for the above requirement must consider and include the relevant
security mechanism=B2.

Thanks,
Nagendra

On 6/26/16, 8:36 PM, "Gregory Mirsky" <gregory.mirsky@ericsson.com> wrote:

>Hi Tal,
>many thanks for your thorough review of the documents by OOAM DT, greatly
>appreciated. Please find my answers and notes in-line and tagged GIM>>.
>We're preparing updates to both drafts and will reflect your comments in
>the coming updates.
>
>	Regards,
>		Greg
>
>-----Original Message-----
>From: Tal Mizrahi [mailto:talmi@marvell.com]
>Sent: Sunday, June 26, 2016 7:20 AM
>To: Nagendra Kumar Nainar (naikumar);
>draft-ooamdt-rtgwg-oam-gap-analysis@tools.ietf.org;
>draft-ooamdt-rtgwg-ooam-requirement@tools.ietf.org; rtgwg@ietf.org
>Cc: bier@ietf.org; sfc@ietf.org; nvo3@ietf.org
>Subject: RE: Comments about Overlay OAM Drafts
>
>Dear Nagendra,
>
>>The comments seems to be missing in the mail. Can you please share the
>>same?.
>
>Strange... The comments seem to be visible in the mail archive
>(https://mailarchive.ietf.org/arch/msg/rtgwg/EPxJQcw9lOAIHV2HkRwNE6GVxAU).
>
>Nevertheless, here goes again:
>
>
>Comments about draft-ooamdt-rtgwg-ooam-requirement:
>https://tools.ietf.org/html/draft-ooamdt-rtgwg-ooam-requirement-00
>
>A general question about the draft: does the draft define requirements
>for operators, requirements for vendors, or requirements for IETF working
>groups? These are three significantly different scopes, and reading the
>document I was not able to assess who the requirements are intended for.
>
>Other comments:
>1.	Section 3: The term 'UCMP' is defined in Section 3, but not used in
>the document.
>GIM>> Good catch, will clear
>2.	The following terms are used in the draft without having been defined:
>-	'OAM session'
>-	'node'
>-	'centralized controller'
>-	'FM'
>GIM>> While Fault Management is straightforward
>3.	Section 4.1.1: 'Reverse Defect Indication (RDI)' =3D=3D> RDI usually
>stands for Remote Defect Indication.
>GIM>> Indeed, thank you. Will update.
>4.	Section 4.1.2: "Overlay OAM MAY support verification of the mapping
>between its data plane state and client layer services" - please clarify
>further.
>GIM>> We intend to provide solutions in the new document. But one use
>case discussed in draft-nordmark-nvo3-transcending-traceroute.
>5.	Section 4.2: the terms 'active' and 'passive' have not been defined in
>the current draft (you may want to cite RFC 7799).
>Specifically, this clarification is necessary since the term 'passive'
>according to RFC 7799 is slightly different than the term 'passive' in
>draft-ietf-ippm-alt-mark-00.
>GIM>> Yes, and we are talking about measurement methods that can be used
>"almost as passive" and explain the requirements toward the overlay to
>achieve such behavior.
>6.	Section 6 - certainly the OAM requirements have security implications.
>For example, OAM protocols may be subject to DoS attacks and to network
>recon. Some of these considerations are discussed in RFC 7276.
>
>
>Comments about draft-ooamdt-rtgwg-oam-gap-analysis:
>https://tools.ietf.org/html/draft-ooamdt-rtgwg-oam-gap-analysis-01
>
>1.	I believe having an OAM gap analysis draft is a good idea.
>GIM>> Thank you.
>2.	The current draft is still very preliminary, and some of the sections
>are still empty.=20
>GIM>> we'll post update before the cut-off date to discuss it in Berlin.
>3.	Section 1: The introduction of the document goes way beyond the scope
>of the title (Gap Analysis). The intro actually defines the baseline of
>an Overlay OAM solution. Either this part should be removed from the
>document, or the scope of the document should be redefined.
>GIM>> I think it may justified as we list existing IETF OAM protocols.
>Though we may move them out of the Introduction and into the new section.
>4.	Section 3.3: this section is unclear, and should probably be rephrased.
>The section discusses both in-band telemetry and passive monitoring, and
>it is not clear whether the two are related or not.
>GIM>> We've discussed the telemetry and it could be collected using
>active OAM, i.e. using injected OAM packets, or using passive-like
>method. Interestingly to discussion in RFC 7799, telemetry collection may
>use methods that could be characterized as hybrid methods as well.
>5.	Section 5: it looks like this text was copied from another draft, and
>is not applicable to this document.
>GIM>> Indeed, we've removed it in the working version. Contributions are
>welcome and appreciated.
>
>Cheers,
>Tal.
>
>
>
>>-----Original Message-----
>>From: Nagendra Kumar Nainar (naikumar) [mailto:naikumar@cisco.com]
>>Sent: Sunday, June 26, 2016 5:16 PM
>>To: Tal Mizrahi; draft-ooamdt-rtgwg-oam-gap-analysis@tools.ietf.org;
>>draft- ooamdt-rtgwg-ooam-requirement@tools.ietf.org; rtgwg@ietf.org
>>Cc: bier@ietf.org; sfc@ietf.org; nvo3@ietf.org
>>Subject: Re: Comments about Overlay OAM Drafts
>>
>>Hi Tal,
>>
>>The comments seems to be missing in the mail. Can you please share the
>>same?.
>>
>>Thanks,
>>Nagendra
>>
>>On 6/26/16, 4:12 AM, "Tal Mizrahi" <talmi@marvell.com> wrote:
>>
>>>Dear OOAM Authors,
>>>
>>>I have read the two OOAM drafts, and I have some comments. Please see
>>>below
>


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From: "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com>
To: Gregory Mirsky <gregory.mirsky@ericsson.com>, "BIER (bier@ietf.org)" <bier@ietf.org>, "sfc@ietf.org" <sfc@ietf.org>, "nvo3@ietf.org" <nvo3@ietf.org>, "rtg-ooam-dt@ietf.org" <rtg-ooam-dt@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
Thread-Topic: [nvo3] Comments to OOAM Requirements draft from Ron Bonica
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Subject: Re: [Bier] [nvo3] Comments to OOAM Requirements draft from Ron Bonica
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--_000_D3A0227568F4Dsadikshiciscocom_
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Hi Greg,

I have following queries on  Overlay OAM Requirements<https://tools.ietf.or=
g/html/draft-ooamdt-rtgwg-ooam-requirement-00>:


>>>>> REQ#6:  Overlay OAM packets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.

"Exactly same path", should be made explicit if it's referring to the under=
lay transport path.

"OAM packets SHOULD be fate sharing with data traffic" will not apply to "R=
EQ#3:  centralized controller".
I think "SHOULD" should be treated as a "MUST" if the reference is within t=
he document :)



>>>>> REQ#11: Overlay OAM MUST support fault localization of Loss of
            Continuity check.

Does the "localization" maps to overlay node/link context ? Can we have a "=
MAY" requirement for mapping
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement
to narrow down to underlay for a speedier fault management.

REQ#22 - REQ#25 refer to "per-segment".
A "segment" maps to a NVO-tunnel?  Shouldn't there be on a  per-VNI basis a=
s well.


>>>>> REQ#7:  Overlay OAM MUST support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.


In case of optical deployments like, fiber management (both request and res=
ponse) can be out-of-band, hence may
need a mention here.


Thanks
Saumya

From: nvo3 <nvo3-bounces@ietf.org<mailto:nvo3-bounces@ietf.org>> on behalf =
of Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericss=
on.com>>
Date: Tuesday, April 5, 2016 at 1:39 AM
To: "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier=
@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@i=
etf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3=
@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-=
dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@iet=
f.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: [nvo3] Comments to OOAM Requirements draft from Ron Bonica

Dear All,
Ron reviewed the Overlay OAM Requirements<https://tools.ietf.org/html/draft=
-ooamdt-rtgwg-ooam-requirement-00> draft and shared his comments under RB> =
tag. The attached copy has my responses in under GIM> tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements draft and OAM for Overlay Net=
works: Gap Analysis.

                Regards,
                                Greg

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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
</head>
<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
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Hi Greg,</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
I have following queries on&nbsp;<span style=3D"font-size: 15px;">&nbsp;</s=
pan><a href=3D"https://tools.ietf.org/html/draft-ooamdt-rtgwg-ooam-requirem=
ent-00" style=3D"font-size: 15px;">Overlay OAM Requirements</a>:</div>
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ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;">&gt;&gt;&gt;&gt;&gt; <i>REQ#6:  Overlay OAM pac=
kets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
&#8220;Exactly same path&#8221;, should be made explicit if it&#8217;s refe=
rring to the underlay transport path.</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<font face=3D"Calibri,sans-serif" style=3D"widows: 1;">&quot;</font><span s=
tyle=3D"widows: 1;"><font face=3D"Calibri,sans-serif"><span style=3D"font-s=
tyle: italic; font-size: 13.3333px;">OAM packets SHOULD be fate sharing wit=
h data traffic</span><span style=3D"font-style: italic; font-size: 13px;">&=
#8221;</span><span style=3D"font-size: 13.3333px;"><i>&nbsp;</i>will
 not apply to &quot;</span></font></span><i style=3D"widows: 1;"><span styl=
e=3D"font-size: 13.3333px;">REQ#3: &nbsp;</span><span style=3D"font-size: 1=
3.3333px;">centralized controller</span><span style=3D"font-size: 13px;">&#=
8221;</span><span style=3D"font-size: 13.3333px;">.</span></i></div>
<div style=3D"widows: 1;">I think &#8220;SHOULD&#8221; should be treated as=
 a &#8220;MUST&#8221; if the reference is within the document :)</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#11: Overlay OAM MUS=
T support fault localization of Loss of
            Continuity check.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Does the &#8220;localization&#8221; maps to overlay node/link context ? Can=
 we have a &#8220;MAY&#8221; requirement for mapping</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
to narrow down to underlay for a speedier fault management.</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
REQ#22 &#8212; REQ#25 refer to &#8220;per-segment&#8221;.&nbsp;</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
A &#8220;segment&#8221; maps to a NVO-tunnel? &nbsp;Shouldn&#8217;t there b=
e on a &nbsp;per-VNI basis as well.</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#7:  Overlay OAM MUS=
T support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.</i>
</pre>
<div><br>
</div>
<div>In case of optical deployments like, fiber management (both request an=
d response) can be out-of-band, hence may</div>
<div>need a mention here.&nbsp;</div>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Thanks</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Saumya</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION" style=3D"color: rgb(0, 0, 0); font-family=
: Calibri, sans-serif; font-size: 14px;">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>nvo3 &lt;<a href=3D"mailto:nv=
o3-bounces@ietf.org">nvo3-bounces@ietf.org</a>&gt; on behalf of Gregory Mir=
sky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.com">gregory.mirsky@erics=
son.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, April 5, 2016 at 1:3=
9 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;BIER (<a href=3D"mailto:b=
ier@ietf.org">bier@ietf.org</a>)&quot; &lt;<a href=3D"mailto:bier@ietf.org"=
>bier@ietf.org</a>&gt;, &quot;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org<=
/a>&quot; &lt;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&gt;, &quot;<=
a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&quot;
 &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&quot; &lt;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, &quot;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a href=3D"mailto:=
rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[nvo3] Comments to OOAM Re=
quirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micro=
soft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" x=
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<div class=3D"WordSection1">
<p class=3D"MsoNormal">Dear All,<o:p></o:p></p>
<p class=3D"MsoNormal">Ron reviewed the <a href=3D"https://tools.ietf.org/h=
tml/draft-ooamdt-rtgwg-ooam-requirement-00">
Overlay OAM Requirements</a> draft and shared his comments under RB&gt; tag=
. The attached copy has my responses in under GIM&gt; tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements
 draft and OAM for Overlay Networks: Gap Analysis.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Greg<o:p></o:p>=
</p>
</div>
</div>
</div>
</span>
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From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
To: "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com>, Gregory Mirsky <gregory.mirsky@ericsson.com>, "BIER (bier@ietf.org)" <bier@ietf.org>, "sfc@ietf.org" <sfc@ietf.org>, "nvo3@ietf.org" <nvo3@ietf.org>, "rtg-ooam-dt@ietf.org" <rtg-ooam-dt@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
Thread-Topic: [Bier] [nvo3] Comments to OOAM Requirements draft from Ron Bonica
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Subject: Re: [Bier] [nvo3] Comments to OOAM Requirements draft from Ron Bonica
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--_000_D39FBA4116A342naikumarciscocom_
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HI Saumya,

Please see inline..

Hi Greg,

I have following queries on  Overlay OAM Requirements<https://tools.ietf.or=
g/html/draft-ooamdt-rtgwg-ooam-requirement-00>:


>>>>> REQ#6:  Overlay OAM packets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.

"Exactly same path", should be made explicit if it's referring to the under=
lay transport path.

<Nagendra> Yes, that is the intention. We will clarify it.

"OAM packets SHOULD be fate sharing with data traffic" will not apply to "R=
EQ#3:  centralized controller".
I think "SHOULD" should be treated as a "MUST" if the reference is within t=
he document :)



>>>>> REQ#11: Overlay OAM MUST support fault localization of Loss of
            Continuity check.

Does the "localization" maps to overlay node/link context ? Can we have a "=
MAY" requirement for mapping
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement
to narrow down to underlay for a speedier fault management.

<Nagendra> MAY statement sounds reasonable.

REQ#22 - REQ#25 refer to "per-segment".
A "segment" maps to a NVO-tunnel?

<Nagendra> Yes, a segment referes to NVO tunnel between NVEs. Multiple such=
 segments may comprise an end-to-end tunnel.

 Shouldn't there be on a  per-VNI basis as well.

<Nagendra>I think  the granularity should definitely at per-VNI level.


>>>>> REQ#7:  Overlay OAM MUST support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.

In case of optical deployments like, fiber management (both request and res=
ponse) can be out-of-band, hence may
need a mention here.
<Nagendra> I see. We will check this.

Thanks for your comments.

Regards,
Nagendra


Thanks
Saumya

From: nvo3 <nvo3-bounces@ietf.org<mailto:nvo3-bounces@ietf.org>> on behalf =
of Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericss=
on.com>>
Date: Tuesday, April 5, 2016 at 1:39 AM
To: "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier=
@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@i=
etf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3=
@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-=
dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@iet=
f.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: [nvo3] Comments to OOAM Requirements draft from Ron Bonica

Dear All,
Ron reviewed the Overlay OAM Requirements<https://tools.ietf.org/html/draft=
-ooamdt-rtgwg-ooam-requirement-00> draft and shared his comments under RB> =
tag. The attached copy has my responses in under GIM> tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements draft and OAM for Overlay Net=
works: Gap Analysis.

                Regards,
                                Greg

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<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
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<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>HI Saumya,</div>
<div><br>
</div>
<div>Please see inline..</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
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y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
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Hi Greg,</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
I have following queries on&nbsp;<span style=3D"font-size: 15px;">&nbsp;</s=
pan><a href=3D"https://tools.ietf.org/html/draft-ooamdt-rtgwg-ooam-requirem=
ent-00" style=3D"font-size: 15px;">Overlay OAM Requirements</a>:</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;">&gt;&gt;&gt;&gt;&gt; <i>REQ#6:  Overlay OAM pac=
kets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
&#8220;Exactly same path&#8221;, should be made explicit if it&#8217;s refe=
rring to the underlay transport path.</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; Yes, that is the intention. We will clarify it.</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<font face=3D"Calibri,sans-serif" style=3D"widows: 1;">&quot;</font><span s=
tyle=3D"widows: 1;"><font face=3D"Calibri,sans-serif"><span style=3D"font-s=
tyle: italic; font-size: 13.3333px;">OAM packets SHOULD be fate sharing wit=
h data traffic</span><span style=3D"font-style: italic; font-size: 13px;">&=
#8221;</span><span style=3D"font-size: 13.3333px;"><i>&nbsp;</i>will
 not apply to &quot;</span></font></span><i style=3D"widows: 1;"><span styl=
e=3D"font-size: 13.3333px;">REQ#3: &nbsp;</span><span style=3D"font-size: 1=
3.3333px;">centralized controller</span><span style=3D"font-size: 13px;">&#=
8221;</span><span style=3D"font-size: 13.3333px;">.</span></i></div>
<div style=3D"widows: 1;">I think &#8220;SHOULD&#8221; should be treated as=
 a &#8220;MUST&#8221; if the reference is within the document :)</div>
</div>
</div>
</span>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#11: Overlay OAM MUS=
T support fault localization of Loss of
            Continuity check.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Does the &#8220;localization&#8221; maps to overlay node/link context ? Can=
 we have a &#8220;MAY&#8221; requirement for mapping</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
to narrow down to underlay for a speedier fault management.</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; MAY statement sounds reasonable.</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
REQ#22 &#8212; REQ#25 refer to &#8220;per-segment&#8221;.&nbsp;</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
A &#8220;segment&#8221; maps to a NVO-tunnel?&nbsp;</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; Yes, a segment referes to NVO tunnel between NVEs. Mu=
ltiple such segments may comprise an end-to-end tunnel.</div>
<div><br>
</div>
<div>&nbsp;Shouldn&#8217;t there be on a &nbsp;per-VNI basis as well.</div>
<div><br>
</div>
<div>&lt;Nagendra&gt;I think &nbsp;the granularity should definitely at per=
-VNI level.&nbsp;</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#7:  Overlay OAM MUS=
T support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.</i></pre>
<div><br>
</div>
<div>In case of optical deployments like, fiber management (both request an=
d response) can be out-of-band, hence may</div>
<div>need a mention here.&nbsp;</div>
</div>
</div>
</div>
</span>
<div>&lt;Nagendra&gt; I see. We will check this.</div>
<div><br>
</div>
<div>Thanks for your comments.</div>
<div><br>
</div>
<div>Regards,</div>
<div>Nagendra</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Thanks</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Saumya</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION" style=3D"color: rgb(0, 0, 0); font-family=
: Calibri, sans-serif; font-size: 14px;">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>nvo3 &lt;<a href=3D"mailto:nv=
o3-bounces@ietf.org">nvo3-bounces@ietf.org</a>&gt; on behalf of Gregory Mir=
sky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.com">gregory.mirsky@erics=
son.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, April 5, 2016 at 1:3=
9 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;BIER (<a href=3D"mailto:b=
ier@ietf.org">bier@ietf.org</a>)&quot; &lt;<a href=3D"mailto:bier@ietf.org"=
>bier@ietf.org</a>&gt;, &quot;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org<=
/a>&quot; &lt;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&gt;, &quot;<=
a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&quot;
 &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&quot; &lt;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, &quot;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a href=3D"mailto:=
rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[nvo3] Comments to OOAM Re=
quirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micro=
soft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" x=
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<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">Dear All,<o:p></o:p></p>
<p class=3D"MsoNormal">Ron reviewed the <a href=3D"https://tools.ietf.org/h=
tml/draft-ooamdt-rtgwg-ooam-requirement-00">
Overlay OAM Requirements</a> draft and shared his comments under RB&gt; tag=
. The attached copy has my responses in under GIM&gt; tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements
 draft and OAM for Overlay Networks: Gap Analysis.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Greg<o:p></o:p>=
</p>
</div>
</div>
</div>
</span></div>
</div>
</span>
</body>
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From: "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com>
To: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>, Gregory Mirsky <gregory.mirsky@ericsson.com>, "BIER (bier@ietf.org)" <bier@ietf.org>, "sfc@ietf.org" <sfc@ietf.org>, "nvo3@ietf.org" <nvo3@ietf.org>, "rtg-ooam-dt@ietf.org" <rtg-ooam-dt@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
Thread-Topic: [Bier] [nvo3] Comments to OOAM Requirements draft from Ron Bonica
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Hi Nagendra,

Thanks for the response. I missed this one in the below email:


>>>>> REQ#14: Overlay OAM MUST have the ability to discover and exercise
            equal cost multipath (ECMP) paths in its transport network.


This will require the underlay nodes/router/switches to support OAM semanti=
cs, which may not be possible
in case of brownfield deployments (deploying NVO tunnels over existing IP-c=
ore network).


Regards,
Saumya.


From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com<mailto:naikuma=
r@cisco.com>>
Date: Monday, July 4, 2016 at 4:39 PM
To: sadikshi <sadikshi@cisco.com<mailto:sadikshi@cisco.com>>, Gregory Mirsk=
y <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericsson.com>>, "BIER =
(bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier@ietf.org>=
>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@ietf.org>>,=
 "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3@ietf.org>=
>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-dt@ietf.or=
g<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@ietf.org>" <r=
tgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: Re: [Bier] [nvo3] Comments to OOAM Requirements draft from Ron Bon=
ica

HI Saumya,

Please see inline..

Hi Greg,

I have following queries on  Overlay OAM Requirements<https://tools.ietf.or=
g/html/draft-ooamdt-rtgwg-ooam-requirement-00>:


>>>>> REQ#6:  Overlay OAM packets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.

"Exactly same path", should be made explicit if it's referring to the under=
lay transport path.

<Nagendra> Yes, that is the intention. We will clarify it.

"OAM packets SHOULD be fate sharing with data traffic" will not apply to "R=
EQ#3:  centralized controller".
I think "SHOULD" should be treated as a "MUST" if the reference is within t=
he document :)



>>>>> REQ#11: Overlay OAM MUST support fault localization of Loss of
            Continuity check.

Does the "localization" maps to overlay node/link context ? Can we have a "=
MAY" requirement for mapping
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement
to narrow down to underlay for a speedier fault management.

<Nagendra> MAY statement sounds reasonable.

REQ#22 - REQ#25 refer to "per-segment".
A "segment" maps to a NVO-tunnel?

<Nagendra> Yes, a segment referes to NVO tunnel between NVEs. Multiple such=
 segments may comprise an end-to-end tunnel.

 Shouldn't there be on a  per-VNI basis as well.

<Nagendra>I think  the granularity should definitely at per-VNI level.


>>>>> REQ#7:  Overlay OAM MUST support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.

In case of optical deployments like, fiber management (both request and res=
ponse) can be out-of-band, hence may
need a mention here.
<Nagendra> I see. We will check this.

Thanks for your comments.

Regards,
Nagendra


Thanks
Saumya

From: nvo3 <nvo3-bounces@ietf.org<mailto:nvo3-bounces@ietf.org>> on behalf =
of Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericss=
on.com>>
Date: Tuesday, April 5, 2016 at 1:39 AM
To: "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier=
@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@i=
etf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3=
@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-=
dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@iet=
f.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: [nvo3] Comments to OOAM Requirements draft from Ron Bonica

Dear All,
Ron reviewed the Overlay OAM Requirements<https://tools.ietf.org/html/draft=
-ooamdt-rtgwg-ooam-requirement-00> draft and shared his comments under RB> =
tag. The attached copy has my responses in under GIM> tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements draft and OAM for Overlay Net=
works: Gap Analysis.

                Regards,
                                Greg

--_000_D3A0A20568FC7sadikshiciscocom_
Content-Type: text/html; charset="iso-8859-1"
Content-ID: <0C2F24C0473AED42BE12D97790DE4DA6@emea.cisco.com>
Content-Transfer-Encoding: quoted-printable

<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
</head>
<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>Hi Nagendra,</div>
<div><br>
</div>
<div>Thanks for the response. I missed this one in the below email:</div>
<div><br>
</div>
<div>
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#14: Overlay OAM MUS=
T have the ability to discover and exercise
            equal cost multipath (ECMP) paths in its transport network.</i>
</pre>
</div>
<div><br>
</div>
<div>This will require the underlay nodes/router/switches to support OAM se=
mantics, which may not be possible&nbsp;</div>
<div>in case of brownfield deployments (deploying NVO tunnels over existing=
 IP-core network).&nbsp;</div>
<div><br>
</div>
<div><br>
</div>
<div>Regards,</div>
<div>Saumya.</div>
<div><br>
</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>&quot;Nagendra Kumar Nainar (=
naikumar)&quot; &lt;<a href=3D"mailto:naikumar@cisco.com">naikumar@cisco.co=
m</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Monday, July 4, 2016 at 4:39 =
PM<br>
<span style=3D"font-weight:bold">To: </span>sadikshi &lt;<a href=3D"mailto:=
sadikshi@cisco.com">sadikshi@cisco.com</a>&gt;, Gregory Mirsky &lt;<a href=
=3D"mailto:gregory.mirsky@ericsson.com">gregory.mirsky@ericsson.com</a>&gt;=
, &quot;BIER (<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>)&quot;
 &lt;<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&quot; &lt;<a href=3D"mailto:sfc@i=
etf.org">sfc@ietf.org</a>&gt;, &quot;<a href=3D"mailto:nvo3@ietf.org">nvo3@=
ietf.org</a>&quot; &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&g=
t;, &quot;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&=
quot;
 &lt;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, =
&quot;<a href=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [Bier] [nvo3] Comments=
 to OOAM Requirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div>HI Saumya,</div>
<div><br>
</div>
<div>Please see inline..</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Hi Greg,</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
I have following queries on&nbsp;<span style=3D"font-size: 15px;">&nbsp;</s=
pan><a href=3D"https://tools.ietf.org/html/draft-ooamdt-rtgwg-ooam-requirem=
ent-00" style=3D"font-size: 15px;">Overlay OAM Requirements</a>:</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;">&gt;&gt;&gt;&gt;&gt; <i>REQ#6:  Overlay OAM pac=
kets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
&#8220;Exactly same path&#8221;, should be made explicit if it&#8217;s refe=
rring to the underlay transport path.</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; Yes, that is the intention. We will clarify it.</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<font face=3D"Calibri,sans-serif" style=3D"widows: 1;">&quot;</font><span s=
tyle=3D"widows: 1;"><font face=3D"Calibri,sans-serif"><span style=3D"font-s=
tyle: italic; font-size: 13.3333px;">OAM packets SHOULD be fate sharing wit=
h data traffic</span><span style=3D"font-style: italic; font-size: 13px;">&=
#8221;</span><span style=3D"font-size: 13.3333px;"><i>&nbsp;</i>will
 not apply to &quot;</span></font></span><i style=3D"widows: 1;"><span styl=
e=3D"font-size: 13.3333px;">REQ#3: &nbsp;</span><span style=3D"font-size: 1=
3.3333px;">centralized controller</span><span style=3D"font-size: 13px;">&#=
8221;</span><span style=3D"font-size: 13.3333px;">.</span></i></div>
<div style=3D"widows: 1;">I think &#8220;SHOULD&#8221; should be treated as=
 a &#8220;MUST&#8221; if the reference is within the document :)</div>
</div>
</div>
</span>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#11: Overlay OAM MUS=
T support fault localization of Loss of
            Continuity check.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Does the &#8220;localization&#8221; maps to overlay node/link context ? Can=
 we have a &#8220;MAY&#8221; requirement for mapping</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
to narrow down to underlay for a speedier fault management.</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; MAY statement sounds reasonable.</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
REQ#22 &#8212; REQ#25 refer to &#8220;per-segment&#8221;.&nbsp;</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
A &#8220;segment&#8221; maps to a NVO-tunnel?&nbsp;</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; Yes, a segment referes to NVO tunnel between NVEs. Mu=
ltiple such segments may comprise an end-to-end tunnel.</div>
<div><br>
</div>
<div>&nbsp;Shouldn&#8217;t there be on a &nbsp;per-VNI basis as well.</div>
<div><br>
</div>
<div>&lt;Nagendra&gt;I think &nbsp;the granularity should definitely at per=
-VNI level.&nbsp;</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#7:  Overlay OAM MUS=
T support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.</i></pre>
<div><br>
</div>
<div>In case of optical deployments like, fiber management (both request an=
d response) can be out-of-band, hence may</div>
<div>need a mention here.&nbsp;</div>
</div>
</div>
</div>
</span>
<div>&lt;Nagendra&gt; I see. We will check this.</div>
<div><br>
</div>
<div>Thanks for your comments.</div>
<div><br>
</div>
<div>Regards,</div>
<div>Nagendra</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Thanks</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Saumya</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION" style=3D"color: rgb(0, 0, 0); font-family=
: Calibri, sans-serif; font-size: 14px;">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>nvo3 &lt;<a href=3D"mailto:nv=
o3-bounces@ietf.org">nvo3-bounces@ietf.org</a>&gt; on behalf of Gregory Mir=
sky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.com">gregory.mirsky@erics=
son.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, April 5, 2016 at 1:3=
9 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;BIER (<a href=3D"mailto:b=
ier@ietf.org">bier@ietf.org</a>)&quot; &lt;<a href=3D"mailto:bier@ietf.org"=
>bier@ietf.org</a>&gt;, &quot;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org<=
/a>&quot; &lt;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&gt;, &quot;<=
a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&quot;
 &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&quot; &lt;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, &quot;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a href=3D"mailto:=
rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[nvo3] Comments to OOAM Re=
quirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micro=
soft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" x=
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/www.w3.org/TR/REC-html40">
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<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">Dear All,<o:p></o:p></p>
<p class=3D"MsoNormal">Ron reviewed the <a href=3D"https://tools.ietf.org/h=
tml/draft-ooamdt-rtgwg-ooam-requirement-00">
Overlay OAM Requirements</a> draft and shared his comments under RB&gt; tag=
. The attached copy has my responses in under GIM&gt; tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements
 draft and OAM for Overlay Networks: Gap Analysis.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Greg<o:p></o:p>=
</p>
</div>
</div>
</div>
</span></div>
</div>
</span></div>
</div>
</span>
</body>
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--_000_D3A0A20568FC7sadikshiciscocom_--


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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 Bit Indexed Explicit Replication of the IETF.

        Title           : BIER Ping and Trace
        Authors         : Nagendra Kumar
                          Carlos Pignataro
                          Nobo Akiya
                          Lianshu Zheng
                          Mach Chen
                          Greg Mirsky
	Filename        : draft-kumarzheng-bier-ping-03.txt
	Pages           : 26
	Date            : 2016-07-05

Abstract:
   Bit Index Explicit Replication (BIER) is an architecture that
   provides optimal multicast forwarding through a "BIER domain" without
   requiring intermediate routers to maintain any multicast related per-
   flow state.  BIER also does not require any explicit tree-building
   protocol for its operation.  A multicast data packet enters a BIER
   domain at a "Bit-Forwarding Ingress Router" (BFIR), and leaves the
   BIER domain at one or more "Bit-Forwarding Egress Routers" (BFERs).
   The BFIR router adds a BIER header to the packet.  The BIER header
   contains a bit-string in which each bit represents exactly one BFER
   to forward the packet to.  The set of BFERs to which the multicast
   packet needs to be forwarded is expressed by setting the bits that
   correspond to those routers in the BIER header.

   This document describes the mechanism and basic BIER OAM packet
   format that can be used to perform failure detection and isolation on
   BIER data plane.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-kumarzheng-bier-ping/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-kumarzheng-bier-ping-03

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-kumarzheng-bier-ping-03


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 Shepherd <gjshep@gmail.com>
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Subject: [Bier] Call For Adoption
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*,

We recently had a WG call for adoption for four IDs and received responses
primarily form the authors only. At the last WG meeting in Buenos Aires the
support in the room was gauged as positive, but we're going to need a
larger - non-author - support from the working group in order to adopt
these drafts.

I'll be sending out a call to adopt for each draft in a separate email.
PLEASE respond with or without your support to the thread so we can
honestly gauge the amount of support for each draft.

Thanks,
Greg (chairs)

--001a11403cdcb393820536e4b58b
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<div dir=3D"ltr">*,<div><br></div><div>We recently had a WG call for adopti=
on for four IDs and received responses primarily form the authors only. At =
the last WG meeting in Buenos Aires the support in the room was gauged as p=
ositive, but we&#39;re going to need a larger - non-author - support from t=
he working group in order to adopt these drafts.</div><div><br></div><div>I=
&#39;ll be sending out a call to adopt for each draft in a separate email. =
PLEASE respond with or without your support to the thread so we can honestl=
y gauge the amount of support for each draft.</div><div><br></div><div>Than=
ks,</div><div>Greg (chairs)</div></div>

--001a11403cdcb393820536e4b58b--


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From: Greg Shepherd <gjshep@gmail.com>
Date: Tue, 5 Jul 2016 08:02:09 -0700
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Subject: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping
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This email starts a two week timer for WG input on the adoption of:

https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02

Please read and respond to this thread with or without your support for
adoption of this draft. Participation in an IETF WG comes with the
responsibility to participate. Please do so. :-)

Thanks,
Greg (chairs)

--001a1149e8e4bc0d240536e4bc5b
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<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:<div><br></div><div><a href=3D"https://tools.ietf.org/html/draft-k=
umarzheng-bier-ping-02">https://tools.ietf.org/html/draft-kumarzheng-bier-p=
ing-02</a><br></div><div><br></div><div>Please read and respond to this thr=
ead with or without your support for adoption of this draft. Participation =
in an IETF WG comes with the responsibility to participate. Please do so. :=
-)</div><div><br></div><div>Thanks,</div><div>Greg (chairs)</div></div>

--001a1149e8e4bc0d240536e4bc5b--


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--001a114f15a03e7d340536e4c1b8
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This email starts a two week timer for WG input on the adoption of:

https://tools.ietf.org/html/draft-mirsky-bier-path-mtu-discovery-01

Please read and respond to this thread with or without your support for
adoption of this draft. Participation in an IETF WG comes with the
responsibility to participate. Please do so. :-)

Thanks,
Greg (chairs)

--001a114f15a03e7d340536e4c1b8
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<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:<div><br></div><div><a href=3D"https://tools.ietf.org/html/draft-m=
irsky-bier-path-mtu-discovery-01">https://tools.ietf.org/html/draft-mirsky-=
bier-path-mtu-discovery-01</a><br></div><div><br></div><div>Please read and=
 respond to this thread with or without your support for adoption of this d=
raft. Participation in an IETF WG comes with the responsibility to particip=
ate. Please do so. :-)</div><div><br></div><div>Thanks,</div><div>Greg (cha=
irs)</div></div>

--001a114f15a03e7d340536e4c1b8--


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From: Greg Shepherd <gjshep@gmail.com>
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Subject: [Bier] Call for WG Adoption: draft-chh-bier-bier-yang
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This email starts a two week timer for WG input on the adoption of:

https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/

Please read and respond to this thread with or without your support for
adoption of this draft. Participation in an IETF WG comes with the
responsibility to participate. Please do so. :-)

Thanks,
Greg (chairs)

--94eb2c0727724846130536e4c879
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<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:<div><br></div><div><a href=3D"https://datatracker.ietf.org/doc/dr=
aft-chh-bier-bier-yang/">https://datatracker.ietf.org/doc/draft-chh-bier-bi=
er-yang/</a><br></div><div><br></div><div>Please read and respond to this t=
hread with or without your support for adoption of this draft. Participatio=
n in an IETF WG comes with the responsibility to participate. Please do so.=
 :-)</div><div><br></div><div>Thanks,</div><div>Greg (chairs)</div></div>

--94eb2c0727724846130536e4c879--


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Subject: [Bier] BIER WG call for Adoption: mirsky-bier-pmmm-oam
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This email starts a two week timer for WG input on the adoption of:

https://datatracker.ietf.org/doc/draft-mirsky-bier-pmmm-oam/

Please read and respond to this thread with or without your support for
adoption of this draft. Participation in an IETF WG comes with the
responsibility to participate. Please do so. :-)

Thanks,
Greg (chairs)

--001a114f15a03cbff70536e4cb27
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<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:<div><br></div><div><a href=3D"https://datatracker.ietf.org/doc/dr=
aft-mirsky-bier-pmmm-oam/">https://datatracker.ietf.org/doc/draft-mirsky-bi=
er-pmmm-oam/</a><br></div><div><br></div><div>Please read and respond to th=
is thread with or without your support for adoption of this draft. Particip=
ation in an IETF WG comes with the responsibility to participate. Please do=
 so. :-)</div><div><br></div><div>Thanks,</div><div>Greg (chairs)</div></di=
v>

--001a114f15a03cbff70536e4cb27--


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To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] BIER WG call for Adoption: mirsky-bier-pmmm-oam
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From: "Reshad Rahman (rrahman)" <rrahman@cisco.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping
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Date: Tue, 5 Jul 2016 15:48:46 +0000
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Support.



From: BIER <bier-bounces@ietf.org<mailto:bier-bounces@ietf.org>> on behalf =
of Greg Shepherd <gjshep@gmail.com<mailto:gjshep@gmail.com>>
Reply-To: "gjshep@gmail.com<mailto:gjshep@gmail.com>" <gjshep@gmail.com<mai=
lto:gjshep@gmail.com>>
Date: Tuesday, July 5, 2016 at 11:02 AM
To: "bier@ietf.org<mailto:bier@ietf.org>" <bier@ietf.org<mailto:bier@ietf.o=
rg>>
Subject: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping

This email starts a two week timer for WG input on the adoption of:

https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02

Please read and respond to this thread with or without your support for ado=
ption of this draft. Participation in an IETF WG comes with the responsibil=
ity to participate. Please do so. :-)

Thanks,
Greg (chairs)

--_000_D3A14F0817B3F5rrahmanciscocom_
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<div>Support.
<table width=3D"543" border=3D"0" cellpadding=3D"0" cellspacing=3D"0">
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<span style=3D"font-weight:bold">From: </span>BIER &lt;<a href=3D"mailto:bi=
er-bounces@ietf.org">bier-bounces@ietf.org</a>&gt; on behalf of Greg Shephe=
rd &lt;<a href=3D"mailto:gjshep@gmail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Reply-To: </span>&quot;<a href=3D"mailto:g=
jshep@gmail.com">gjshep@gmail.com</a>&quot; &lt;<a href=3D"mailto:gjshep@gm=
ail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, July 5, 2016 at 11:0=
2 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;<a href=3D"mailto:bier@ie=
tf.org">bier@ietf.org</a>&quot; &lt;<a href=3D"mailto:bier@ietf.org">bier@i=
etf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[Bier] Call for WG Adoptio=
n: draft-kumarzheng-bier-ping<br>
</div>
<div><br>
</div>
<div>
<div>
<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:
<div><br>
</div>
<div><a href=3D"https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02">=
https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02</a><br>
</div>
<div><br>
</div>
<div>Please read and respond to this thread with or without your support fo=
r adoption of this draft. Participation in an IETF WG comes with the respon=
sibility to participate. Please do so. :-)</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Greg (chairs)</div>
</div>
</div>
</div>
</span>
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--_000_D3A14F0817B3F5rrahmanciscocom_--


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From: "Reshad Rahman (rrahman)" <rrahman@cisco.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Call for WG Adoption: draft-chh-bier-bier-yang
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Date: Tue, 5 Jul 2016 15:57:03 +0000
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Support.

From: BIER <bier-bounces@ietf.org<mailto:bier-bounces@ietf.org>> on behalf =
of Greg Shepherd <gjshep@gmail.com<mailto:gjshep@gmail.com>>
Reply-To: "gjshep@gmail.com<mailto:gjshep@gmail.com>" <gjshep@gmail.com<mai=
lto:gjshep@gmail.com>>
Date: Tuesday, July 5, 2016 at 11:05 AM
To: "bier@ietf.org<mailto:bier@ietf.org>" <bier@ietf.org<mailto:bier@ietf.o=
rg>>
Subject: [Bier] Call for WG Adoption: draft-chh-bier-bier-yang

This email starts a two week timer for WG input on the adoption of:

https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/

Please read and respond to this thread with or without your support for ado=
ption of this draft. Participation in an IETF WG comes with the responsibil=
ity to participate. Please do so. :-)

Thanks,
Greg (chairs)

--_000_D3A14F3017B3FArrahmanciscocom_
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<span style=3D"font-weight:bold">From: </span>BIER &lt;<a href=3D"mailto:bi=
er-bounces@ietf.org">bier-bounces@ietf.org</a>&gt; on behalf of Greg Shephe=
rd &lt;<a href=3D"mailto:gjshep@gmail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Reply-To: </span>&quot;<a href=3D"mailto:g=
jshep@gmail.com">gjshep@gmail.com</a>&quot; &lt;<a href=3D"mailto:gjshep@gm=
ail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, July 5, 2016 at 11:0=
5 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;<a href=3D"mailto:bier@ie=
tf.org">bier@ietf.org</a>&quot; &lt;<a href=3D"mailto:bier@ietf.org">bier@i=
etf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[Bier] Call for WG Adoptio=
n: draft-chh-bier-bier-yang<br>
</div>
<div><br>
</div>
<div>
<div>
<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:
<div><br>
</div>
<div><a href=3D"https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/"=
>https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/</a><br>
</div>
<div><br>
</div>
<div>Please read and respond to this thread with or without your support fo=
r adoption of this draft. Participation in an IETF WG comes with the respon=
sibility to participate. Please do so. :-)</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Greg (chairs)</div>
</div>
</div>
</div>
</span>
</body>
</html>

--_000_D3A14F3017B3FArrahmanciscocom_--


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From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping
Thread-Index: AQHR1s5Es6YSz/Z1G0i5mdoVdYtGpKAKEj4A
Date: Tue, 5 Jul 2016 16:09:06 +0000
Message-ID: <D3A153D9.16B2AE%naikumar@cisco.com>
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Support.

From: BIER <bier-bounces@ietf.org<mailto:bier-bounces@ietf.org>> on behalf =
of Greg Shepherd <gjshep@gmail.com<mailto:gjshep@gmail.com>>
Reply-To: "gjshep@gmail.com<mailto:gjshep@gmail.com>" <gjshep@gmail.com<mai=
lto:gjshep@gmail.com>>
Date: Tuesday, July 5, 2016 at 11:02 AM
To: "bier@ietf.org<mailto:bier@ietf.org>" <bier@ietf.org<mailto:bier@ietf.o=
rg>>
Subject: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping

This email starts a two week timer for WG input on the adoption of:

https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02

Please read and respond to this thread with or without your support for ado=
ption of this draft. Participation in an IETF WG comes with the responsibil=
ity to participate. Please do so. :-)

Thanks,
Greg (chairs)

--_000_D3A153D916B2AEnaikumarciscocom_
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e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>Support.</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
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<span style=3D"font-weight:bold">From: </span>BIER &lt;<a href=3D"mailto:bi=
er-bounces@ietf.org">bier-bounces@ietf.org</a>&gt; on behalf of Greg Shephe=
rd &lt;<a href=3D"mailto:gjshep@gmail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Reply-To: </span>&quot;<a href=3D"mailto:g=
jshep@gmail.com">gjshep@gmail.com</a>&quot; &lt;<a href=3D"mailto:gjshep@gm=
ail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, July 5, 2016 at 11:0=
2 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;<a href=3D"mailto:bier@ie=
tf.org">bier@ietf.org</a>&quot; &lt;<a href=3D"mailto:bier@ietf.org">bier@i=
etf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[Bier] Call for WG Adoptio=
n: draft-kumarzheng-bier-ping<br>
</div>
<div><br>
</div>
<div>
<div>
<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:
<div><br>
</div>
<div><a href=3D"https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02">=
https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02</a><br>
</div>
<div><br>
</div>
<div>Please read and respond to this thread with or without your support fo=
r adoption of this draft. Participation in an IETF WG comes with the respon=
sibility to participate. Please do so. :-)</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Greg (chairs)</div>
</div>
</div>
</div>
</span>
</body>
</html>

--_000_D3A153D916B2AEnaikumarciscocom_--


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From: "Mahesh Sivakumar (masivaku)" <masivaku@cisco.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Call for WG Adoption: draft-chh-bier-bier-yang
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Date: Tue, 5 Jul 2016 16:10:05 +0000
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Support as co-author.

From: BIER <bier-bounces@ietf.org<mailto:bier-bounces@ietf.org>> on behalf =
of Greg Shepherd <gjshep@gmail.com<mailto:gjshep@gmail.com>>
Reply-To: "gjshep@gmail.com<mailto:gjshep@gmail.com>" <gjshep@gmail.com<mai=
lto:gjshep@gmail.com>>
Date: Tuesday, July 5, 2016 at 8:05 AM
To: "bier@ietf.org<mailto:bier@ietf.org>" <bier@ietf.org<mailto:bier@ietf.o=
rg>>
Subject: [Bier] Call for WG Adoption: draft-chh-bier-bier-yang

This email starts a two week timer for WG input on the adoption of:

https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/

Please read and respond to this thread with or without your support for ado=
ption of this draft. Participation in an IETF WG comes with the responsibil=
ity to participate. Please do so. :-)

Thanks,
Greg (chairs)

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<div>Support as co-author.</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
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<span style=3D"font-weight:bold">From: </span>BIER &lt;<a href=3D"mailto:bi=
er-bounces@ietf.org">bier-bounces@ietf.org</a>&gt; on behalf of Greg Shephe=
rd &lt;<a href=3D"mailto:gjshep@gmail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Reply-To: </span>&quot;<a href=3D"mailto:g=
jshep@gmail.com">gjshep@gmail.com</a>&quot; &lt;<a href=3D"mailto:gjshep@gm=
ail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, July 5, 2016 at 8:05=
 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;<a href=3D"mailto:bier@ie=
tf.org">bier@ietf.org</a>&quot; &lt;<a href=3D"mailto:bier@ietf.org">bier@i=
etf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[Bier] Call for WG Adoptio=
n: draft-chh-bier-bier-yang<br>
</div>
<div><br>
</div>
<div>
<div>
<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:
<div><br>
</div>
<div><a href=3D"https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/"=
>https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/</a><br>
</div>
<div><br>
</div>
<div>Please read and respond to this thread with or without your support fo=
r adoption of this draft. Participation in an IETF WG comes with the respon=
sibility to participate. Please do so. :-)</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Greg (chairs)</div>
</div>
</div>
</div>
</span>
</body>
</html>

--_000_D3A12A428CF43masivakuciscocom_--


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Subject: Re: [Bier] Call for WG Adoption: draft-chh-bier-bier-yang
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Support.

Thx,

Ice.

> On 05 Jul 2016, at 17:05, Greg Shepherd <gjshep@gmail.com> wrote:
>=20
> This email starts a two week timer for WG input on the adoption of:
>=20
> https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/
>=20
> Please read and respond to this thread with or without your support =
for adoption of this draft. Participation in an IETF WG comes with the =
responsibility to participate. Please do so. :-)
>=20
> Thanks,
> Greg (chairs)
> _______________________________________________
> BIER mailing list
> BIER@ietf.org
> https://www.ietf.org/mailman/listinfo/bier


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Subject: Re: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping
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Support.

> On 05 Jul 2016, at 17:02, Greg Shepherd <gjshep@gmail.com> wrote:
>=20
> This email starts a two week timer for WG input on the adoption of:
>=20
> https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02
>=20
> Please read and respond to this thread with or without your support =
for adoption of this draft. Participation in an IETF WG comes with the =
responsibility to participate. Please do so. :-)
>=20
> Thanks,
> Greg (chairs)
> _______________________________________________
> BIER mailing list
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> https://www.ietf.org/mailman/listinfo/bier


From nobody Tue Jul  5 09:13:23 2016
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From: "Mahesh Sivakumar (masivaku)" <masivaku@cisco.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping
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Support.

From: BIER <bier-bounces@ietf.org<mailto:bier-bounces@ietf.org>> on behalf =
of Greg Shepherd <gjshep@gmail.com<mailto:gjshep@gmail.com>>
Reply-To: "gjshep@gmail.com<mailto:gjshep@gmail.com>" <gjshep@gmail.com<mai=
lto:gjshep@gmail.com>>
Date: Tuesday, July 5, 2016 at 8:02 AM
To: "bier@ietf.org<mailto:bier@ietf.org>" <bier@ietf.org<mailto:bier@ietf.o=
rg>>
Subject: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping

This email starts a two week timer for WG input on the adoption of:

https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02

Please read and respond to this thread with or without your support for ado=
ption of this draft. Participation in an IETF WG comes with the responsibil=
ity to participate. Please do so. :-)

Thanks,
Greg (chairs)

--_000_D3A12B0D8CF4Cmasivakuciscocom_
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e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>Support.</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
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<span style=3D"font-weight:bold">From: </span>BIER &lt;<a href=3D"mailto:bi=
er-bounces@ietf.org">bier-bounces@ietf.org</a>&gt; on behalf of Greg Shephe=
rd &lt;<a href=3D"mailto:gjshep@gmail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Reply-To: </span>&quot;<a href=3D"mailto:g=
jshep@gmail.com">gjshep@gmail.com</a>&quot; &lt;<a href=3D"mailto:gjshep@gm=
ail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, July 5, 2016 at 8:02=
 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;<a href=3D"mailto:bier@ie=
tf.org">bier@ietf.org</a>&quot; &lt;<a href=3D"mailto:bier@ietf.org">bier@i=
etf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[Bier] Call for WG Adoptio=
n: draft-kumarzheng-bier-ping<br>
</div>
<div><br>
</div>
<div>
<div>
<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:
<div><br>
</div>
<div><a href=3D"https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02">=
https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02</a><br>
</div>
<div><br>
</div>
<div>Please read and respond to this thread with or without your support fo=
r adoption of this draft. Participation in an IETF WG comes with the respon=
sibility to participate. Please do so. :-)</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Greg (chairs)</div>
</div>
</div>
</div>
</span>
</body>
</html>

--_000_D3A12B0D8CF4Cmasivakuciscocom_--


From nobody Tue Jul  5 09:48:29 2016
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
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Subject: Re: [Bier] BIER WG call for Adoption: mirsky-bier-pmmm-oam
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Call for WG Adoption: draft-chh-bier-bier-yang
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Call for WG Adoption: draft-mirsky-bier-path-mtu-discovery
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Subject: Re: [Bier] Call for WG Adoption: draft-mirsky-bier-path-mtu-discovery
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
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Thread-Topic: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping
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Subject: Re: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping
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From: Tony Przygienda <tonysietf@gmail.com>
Date: Tue, 5 Jul 2016 14:22:14 -0700
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Yep, seconding that as co-chair and request participation. It is not enough
NOT to vote (as lots of inhabitants of an island of the coast of Europe
found out to their detriment recently ;-)

-- tony

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<div dir=3D"ltr">Yep, seconding that as co-chair and request participation.=
 It is not enough NOT to vote (as lots of inhabitants of an island of the c=
oast of Europe found out to their detriment recently ;-)=C2=A0<div><br></di=
v><div>-- tony=C2=A0</div><div class=3D"gmail_extra"><br>
</div></div>

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From: "Dolganow, Andrew (Nokia - SG)" <andrew.dolganow@nokia.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>
Thread-Topic: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping
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Support

Andrew

Sent from my iPhone

On Jul 6, 2016, at 1:02 AM, Greg Shepherd <gjshep@gmail.com<mailto:gjshep@g=
mail.com>> wrote:

This email starts a two week timer for WG input on the adoption of:

https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02

Please read and respond to this thread with or without your support for ado=
ption of this draft. Participation in an IETF WG comes with the responsibil=
ity to participate. Please do so. :-)

Thanks,
Greg (chairs)
_______________________________________________
BIER mailing list
BIER@ietf.org<mailto:BIER@ietf.org>
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<div>Support<br>
<br>
Andrew
<div><br>
</div>
<div>Sent from my iPhone</div>
</div>
<div><br>
On Jul 6, 2016, at 1:02 AM, Greg Shepherd &lt;<a href=3D"mailto:gjshep@gmai=
l.com">gjshep@gmail.com</a>&gt; wrote:<br>
<br>
</div>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:
<div><br>
</div>
<div><a href=3D"https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02">=
https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02</a><br>
</div>
<div><br>
</div>
<div>Please read and respond to this thread with or without your support fo=
r adoption of this draft. Participation in an IETF WG comes with the respon=
sibility to participate. Please do so. :-)</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Greg (chairs)</div>
</div>
</div>
</blockquote>
<blockquote type=3D"cite">
<div><span>_______________________________________________</span><br>
<span>BIER mailing list</span><br>
<span><a href=3D"mailto:BIER@ietf.org">BIER@ietf.org</a></span><br>
<span><a href=3D"https://www.ietf.org/mailman/listinfo/bier">https://www.ie=
tf.org/mailman/listinfo/bier</a></span><br>
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Support as co-author

Andrew

Sent from my iPhone

On Jul 6, 2016, at 1:04 AM, Greg Shepherd <gjshep@gmail.com<mailto:gjshep@g=
mail.com>> wrote:

This email starts a two week timer for WG input on the adoption of:

https://tools.ietf.org/html/draft-mirsky-bier-path-mtu-discovery-01

Please read and respond to this thread with or without your support for ado=
ption of this draft. Participation in an IETF WG comes with the responsibil=
ity to participate. Please do so. :-)

Thanks,
Greg (chairs)
_______________________________________________
BIER mailing list
BIER@ietf.org<mailto:BIER@ietf.org>
https://www.ietf.org/mailman/listinfo/bier

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<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
</head>
<body dir=3D"auto">
<div>Support as co-author<br>
<br>
Andrew
<div><br>
</div>
<div>Sent from my iPhone</div>
</div>
<div><br>
On Jul 6, 2016, at 1:04 AM, Greg Shepherd &lt;<a href=3D"mailto:gjshep@gmai=
l.com">gjshep@gmail.com</a>&gt; wrote:<br>
<br>
</div>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:
<div><br>
</div>
<div><a href=3D"https://tools.ietf.org/html/draft-mirsky-bier-path-mtu-disc=
overy-01">https://tools.ietf.org/html/draft-mirsky-bier-path-mtu-discovery-=
01</a><br>
</div>
<div><br>
</div>
<div>Please read and respond to this thread with or without your support fo=
r adoption of this draft. Participation in an IETF WG comes with the respon=
sibility to participate. Please do so. :-)</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Greg (chairs)</div>
</div>
</div>
</blockquote>
<blockquote type=3D"cite">
<div><span>_______________________________________________</span><br>
<span>BIER mailing list</span><br>
<span><a href=3D"mailto:BIER@ietf.org">BIER@ietf.org</a></span><br>
<span><a href=3D"https://www.ietf.org/mailman/listinfo/bier">https://www.ie=
tf.org/mailman/listinfo/bier</a></span><br>
</div>
</blockquote>
</body>
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--_000_01B141C01D1D40EFA5055893B9C8040Bnokiacom_--


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From: "Reshad Rahman (rrahman)" <rrahman@cisco.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] BIER WG call for Adoption: mirsky-bier-pmmm-oam
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Date: Wed, 6 Jul 2016 01:02:05 +0000
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Support.

From: BIER <bier-bounces@ietf.org<mailto:bier-bounces@ietf.org>> on behalf =
of Greg Shepherd <gjshep@gmail.com<mailto:gjshep@gmail.com>>
Reply-To: "gjshep@gmail.com<mailto:gjshep@gmail.com>" <gjshep@gmail.com<mai=
lto:gjshep@gmail.com>>
Date: Tuesday, July 5, 2016 at 11:06 AM
To: "bier@ietf.org<mailto:bier@ietf.org>" <bier@ietf.org<mailto:bier@ietf.o=
rg>>
Subject: [Bier] BIER WG call for Adoption: mirsky-bier-pmmm-oam

This email starts a two week timer for WG input on the adoption of:

https://datatracker.ietf.org/doc/draft-mirsky-bier-pmmm-oam/

Please read and respond to this thread with or without your support for ado=
ption of this draft. Participation in an IETF WG comes with the responsibil=
ity to participate. Please do so. :-)

Thanks,
Greg (chairs)

--_000_D3A1509D17B417rrahmanciscocom_
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>
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e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>
<div>
<div>Support.</div>
</div>
</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
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 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>BIER &lt;<a href=3D"mailto:bi=
er-bounces@ietf.org">bier-bounces@ietf.org</a>&gt; on behalf of Greg Shephe=
rd &lt;<a href=3D"mailto:gjshep@gmail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Reply-To: </span>&quot;<a href=3D"mailto:g=
jshep@gmail.com">gjshep@gmail.com</a>&quot; &lt;<a href=3D"mailto:gjshep@gm=
ail.com">gjshep@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, July 5, 2016 at 11:0=
6 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;<a href=3D"mailto:bier@ie=
tf.org">bier@ietf.org</a>&quot; &lt;<a href=3D"mailto:bier@ietf.org">bier@i=
etf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[Bier] BIER WG call for Ad=
option: mirsky-bier-pmmm-oam<br>
</div>
<div><br>
</div>
<div>
<div>
<div dir=3D"ltr">This email starts a two week timer for WG input on the ado=
ption of:
<div><br>
</div>
<div><a href=3D"https://datatracker.ietf.org/doc/draft-mirsky-bier-pmmm-oam=
/">https://datatracker.ietf.org/doc/draft-mirsky-bier-pmmm-oam/</a><br>
</div>
<div><br>
</div>
<div>Please read and respond to this thread with or without your support fo=
r adoption of this draft. Participation in an IETF WG comes with the respon=
sibility to participate. Please do so. :-)</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Greg (chairs)</div>
</div>
</div>
</div>
</span>
</body>
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--_000_D3A1509D17B417rrahmanciscocom_--


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From nobody Tue Jul  5 19:52:48 2016
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Support.


Thanks
Deccan

This email starts a two week timer for WG input on the adoption of:

https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/

Please read and respond to this thread with or without your support for 
adoption of this draft. Participation in an IETF WG comes with the 
responsibility to participate. Please do so. :-)

Thanks,
Greg (chairs)_______________________________________________
BIER mailing list
BIER@ietf.org
https://www.ietf.org/mailman/listinfo/bier


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<font size=2 face="sans-serif">Support.</font>
<br>
<br>
<br><font size=2 face="sans-serif">Thanks</font>
<br><font size=2 face="sans-serif">Deccan</font>
<br>
<br><font size=3>This email starts a two week timer for WG input on the
adoption of:</font>
<br>
<br><a href="https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/"><font size=3 color=blue><u>https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/</u></font></a>
<br>
<br><font size=3>Please read and respond to this thread with or without
your support for adoption of this draft. Participation in an IETF WG comes
with the responsibility to participate. Please do so. :-)</font>
<br>
<br><font size=3>Thanks,</font>
<br><font size=3>Greg (chairs)</font><tt><font size=2>_______________________________________________<br>
BIER mailing list<br>
BIER@ietf.org<br>
</font></tt><a href=https://www.ietf.org/mailman/listinfo/bier><tt><font size=2>https://www.ietf.org/mailman/listinfo/bier</font></tt></a><font size=2 face="sans-serif"><br>
</font>
<br>
<br>

<br><pre><font color="blue">
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</font></pre><br>

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From: Fioccola Giuseppe <giuseppe.fioccola@telecomitalia.it>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping
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Subject: [Bier] R:  Call for WG Adoption: draft-kumarzheng-bier-ping
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From nobody Thu Jul  7 08:44:44 2016
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Subject: [Bier] I-D Action: draft-ietf-bier-use-cases-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 Bit Indexed Explicit Replication of the IETF.

        Title           : BIER Use Cases draft-ietf-bier-use-cases-03 .txt
        Authors         : Nagendra Kumar
                          Rajiv Asati
                          Mach(Guoyi) Chen
                          Xiaohu Xu
                          Andrew Dolganow
                          Tony Przygienda
                          Arkadiy Gulko
                          Dom Robinson
                          Vishal Arya
                          Caitlin Bestler
	Filename        : draft-ietf-bier-use-cases-03.txt
	Pages           : 17
	Date            : 2016-07-07

Abstract:
   Bit Index Explicit Replication (BIER) is an architecture that
   provides optimal multicast forwarding through a "BIER domain" without
   requiring intermediate routers to maintain any multicast related per-
   flow state.  BIER also does not require any explicit tree-building
   protocol for its operation.  A multicast data packet enters a BIER
   domain at a "Bit-Forwarding Ingress Router" (BFIR), and leaves the
   BIER domain at one or more "Bit-Forwarding Egress Routers" (BFERs).
   The BFIR router adds a BIER header to the packet.  The BIER header
   contains a bit-string in which each bit represents exactly one BFER
   to forward the packet to.  The set of BFERs to which the multicast
   packet needs to be forwarded is expressed by setting the bits that
   correspond to those routers in the BIER header.

   This document describes some of the use-cases for BIER.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-bier-use-cases/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-bier-use-cases-03

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-bier-use-cases-03


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/


From nobody Fri Jul  8 06:15:29 2016
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Date: Fri, 8 Jul 2016 06:15:22 -0700
From: Toerless Eckert <eckert@cisco.com>
To: bier@ietf.org
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Subject: [Bier] bier: draft-eckert-bier-te drafts update
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As suggested during BA meeting, we have split out FRR from
the BIER-TE arch draft into a separate draft and posted updated
docs for both. See changelog in -arch draft for details.

Cheers
    Toerless

> A new version of I-D, draft-eckert-bier-te-arch-04.txt
> has been successfully submitted by Toerless Eckert and posted to the
> IETF repository.
>
> Name:         draft-eckert-bier-te-arch
> Revision:     04
> Title:                Traffic Engineering for Bit Index Explicit Replication BIER-TE
> Document date:        2016-07-08
> Group:                Individual Submission
> Pages:                28
> URL:            https://www.ietf.org/internet-drafts/draft-eckert-bier-te-arch-04.txt
> Status:         https://datatracker.ietf.org/doc/draft-eckert-bier-te-arch/
> Htmlized:       https://tools.ietf.org/html/draft-eckert-bier-te-arch-04
> Diff:           https://www.ietf.org/rfcdiff?url2=draft-eckert-bier-te-arch-04

> A new version of I-D, draft-eckert-bier-te-frr-00.txt
> has been successfully submitted by Toerless Eckert and posted to the
> IETF repository.
>
> Name:         draft-eckert-bier-te-frr
> Revision:     00
> Title:                Fast ReRoute (FRR) Extensions for BIER-TE
> Document date:        2016-07-08
> Group:                Individual Submission
> Pages:                10
> URL:            https://www.ietf.org/internet-drafts/draft-eckert-bier-te-frr-00.txt
> Status:         https://datatracker.ietf.org/doc/draft-eckert-bier-te-frr/
> Htmlized:       https://tools.ietf.org/html/draft-eckert-bier-te-frr-00


From nobody Fri Jul  8 08:08:16 2016
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Subject: [Bier] I-D Action: draft-ietf-bier-mpls-encapsulation-05.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 Bit Indexed Explicit Replication of the IETF.

        Title           : Encapsulation for Bit Index Explicit Replication in MPLS Networks
        Authors         : IJsbrand Wijnands
                          Eric C. Rosen
                          Andrew Dolganow
                          Jeff Tantsura
                          Sam K Aldrin
                          Israel Meilik
	Filename        : draft-ietf-bier-mpls-encapsulation-05.txt
	Pages           : 15
	Date            : 2016-07-08

Abstract:
   Bit Index Explicit Replication (BIER) is an architecture that
   provides optimal multicast forwarding through a "multicast domain",
   without requiring intermediate routers to maintain any per-flow state
   or to engage in an explicit tree-building protocol.  When a multicast
   data packet enters the domain, the ingress router determines the set
   of egress routers to which the packet needs to be sent.  The ingress
   router then encapsulates the packet in a BIER header.  The BIER
   header contains a bitstring in which each bit represents exactly one
   egress router in the domain; to forward the packet to a given set of
   egress routers, the bits corresponding to those routers are set in
   the BIER header.  The details of the encapsulation depend on the type
   of network used to realize the multicast domain.  This document
   specifies the BIER encapsulation to be used in an MPLS network.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-bier-mpls-encapsulation/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-bier-mpls-encapsulation-05

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-bier-mpls-encapsulation-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.

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


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We have a couple of item requests coming in. Please send other to chairs.
Looking forward to seeing you all in Berlin!

Cheers,
Greg
(chairs)

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<div dir="ltr">We have a couple of item requests coming in. Please send other to chairs. Looking forward to seeing you all in Berlin!<div><br></div><div>Cheers,</div><div>Greg</div><div>(chairs)</div></div>

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From: Mach Chen <mach.chen@huawei.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] BIER WG call for Adoption: mirsky-bier-pmmm-oam
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Date: Mon, 11 Jul 2016 03:28:04 +0000
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Subject: Re: [Bier] BIER WG call for Adoption: mirsky-bier-pmmm-oam
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From: Mach Chen <mach.chen@huawei.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Call for WG Adoption: draft-chh-bier-bier-yang
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From: Mach Chen <mach.chen@huawei.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Call for WG Adoption: draft-mirsky-bier-path-mtu-discovery
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Date: Sat, 16 Jul 2016 13:31:42 -0700
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Subject: Re: [Bier] BIER WG Agenda Items
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--001a1149e8e48456a80537c69fa2
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Current agenda items:

draft-chenvgovindan-bier-bgp-ls-bier-ext        10mins     Ran Chen
draft-wijnands-bier-mld-lan-election-01           10mins     Ice Wijnands
draft-eckert-bier-te-arch                                   10mins
Toerless Eckert
draft-eckert-bier-te-frr                                       10mins
Michael Menth
Future encap work discussion                         1hr           Chair/WG

I'll be uploading this soon, so please send any missing agenda items ASAP.
And those on the agenda, please send slides. Our session is Monday, so we
need to have the presentations uploaded by Sunday. I will not take a memory
stick in the room.

Thanks,
Greg (chairs)

On Fri, Jul 8, 2016 at 2:02 PM, Greg Shepherd <gjshep@gmail.com> wrote:

> We have a couple of item requests coming in. Please send other to chairs.
> Looking forward to seeing you all in Berlin!
>
> Cheers,
> Greg
> (chairs)
>

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<div dir=3D"ltr">Current agenda items:<div><br></div><div>draft-chenvgovind=
an-bier-bgp-ls-bier-ext =C2=A0 =C2=A0 =C2=A0 =C2=A010mins =C2=A0 =C2=A0 Ran=
 Chen</div><div>draft-wijnands-bier-mld-lan-election-01 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 10mins =C2=A0 =C2=A0 Ice Wijnands</div><div>draft-eckert-=
bier-te-arch =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 10mins =C2=A0 =C2=
=A0 Toerless Eckert</div><div>draft-eckert-bier-te-frr =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 10mins =C2=A0 =C2=A0 Michael Menth</=
div><div>Future encap work discussion =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 1hr =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 Chair/WG</div><div><br></div><div>I&#39;ll be uploading this =
soon, so please send any missing agenda items ASAP. And those on the agenda=
, please send slides. Our session is Monday, so we need to have the present=
ations uploaded by Sunday. I will not take a memory stick in the room.</div=
><div><br></div><div>Thanks,</div><div>Greg (chairs)</div></div><div class=
=3D"gmail_extra"><br><div class=3D"gmail_quote">On Fri, Jul 8, 2016 at 2:02=
 PM, Greg Shepherd <span dir=3D"ltr">&lt;<a href=3D"mailto:gjshep@gmail.com=
" target=3D"_blank">gjshep@gmail.com</a>&gt;</span> wrote:<br><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;=
padding-left:1ex"><div dir=3D"ltr">We have a couple of item requests coming=
 in. Please send other to chairs. Looking forward to seeing you all in Berl=
in!<div><br></div><div>Cheers,</div><div>Greg</div><div>(chairs)</div></div=
>
</blockquote></div><br></div>

--001a1149e8e48456a80537c69fa2--


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From: Tony Przygienda <tonysietf@gmail.com>
Date: Sun, 17 Jul 2016 04:08:24 -0700
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Subject: [Bier] comments on draft-bergmann-bier-ccast
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Read the draft with interest.

Generally, not sure how it touches BIER specifically. It seems to specify
RPL extensions. Yes, one could reuse the BIER bit mask to propagate a BLOOM
filter instead of a perfect mask @ the benefit of 'set bit mask
compression' vs. the cost of spurious transmissions as the draft
acknowledges where the degenerate case is a full broadcast. The according
BIER procedures/approach is nowhere to be found in the draft though ...

As nit I didn't find in 6550 anything talking about "storing mode" so a
better reference is needed.

--- tony

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<div dir=3D"ltr">Read the draft with interest.=C2=A0
<div><br></div><div>Generally, not sure how it touches BIER specifically. I=
t seems to specify RPL extensions. Yes, one could reuse the BIER bit mask t=
o propagate a BLOOM filter instead of a perfect mask @ the benefit of &#39;=
set bit mask compression&#39; vs. the cost of spurious transmissions as the=
 draft acknowledges where the degenerate case is a full broadcast. The acco=
rding BIER procedures/approach is nowhere to be found in the draft though .=
..=C2=A0</div><div><br></div><div>As nit I didn&#39;t find in 6550 anything=
 talking about &quot;storing mode&quot; so a better reference is needed.=C2=
=A0</div><div><br></div><div>--- tony=C2=A0</div></div>

--001a11409f9a281fab0537d2e119--


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From: Greg Shepherd <gjshep@gmail.com>
Date: Sun, 17 Jul 2016 22:16:57 -0700
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Subject: Re: [Bier] Call for WG Adoption: draft-chh-bier-bier-yang
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There has been sufficient show of support to adopt:

https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/

as a working BIER WG draft.

The authors are here reminded that they are transferring change control for
this document to the IETF.

Please post the draft with a working group ID, and the chairs will approve.

Thanks!

Greg

On Tue, Jul 5, 2016 at 8:05 AM, Greg Shepherd <gjshep@gmail.com> wrote:

> This email starts a two week timer for WG input on the adoption of:
>
> https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang/
>
> Please read and respond to this thread with or without your support for
> adoption of this draft. Participation in an IETF WG comes with the
> responsibility to participate. Please do so. :-)
>
> Thanks,
> Greg (chairs)
>

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<div dir=3D"ltr">There has been sufficient show of support to adopt:<div><b=
r></div><div><a href=3D"https://datatracker.ietf.org/doc/draft-chh-bier-bie=
r-yang/" target=3D"_blank" style=3D"font-size:13px">https://datatracker.iet=
f.org/doc/draft-chh-bier-bier-yang/</a><br></div><div><br></div><div>as a w=
orking BIER WG draft.</div><div><br></div><div>The authors are here reminde=
d that they are transferring change control for this document to the IETF.<=
/div><div><br></div><div>Please post the draft with a working group ID, and=
 the chairs will approve.</div><div><br></div><div>Thanks!</div><div><br></=
div><div>Greg</div></div><div class=3D"gmail_extra"><br><div class=3D"gmail=
_quote">On Tue, Jul 5, 2016 at 8:05 AM, Greg Shepherd <span dir=3D"ltr">&lt=
;<a href=3D"mailto:gjshep@gmail.com" target=3D"_blank">gjshep@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">This =
email starts a two week timer for WG input on the adoption of:<div><br></di=
v><div><a href=3D"https://datatracker.ietf.org/doc/draft-chh-bier-bier-yang=
/" target=3D"_blank">https://datatracker.ietf.org/doc/draft-chh-bier-bier-y=
ang/</a><br></div><div><br></div><div>Please read and respond to this threa=
d with or without your support for adoption of this draft. Participation in=
 an IETF WG comes with the responsibility to participate. Please do so. :-)=
</div><div><br></div><div>Thanks,</div><div>Greg (chairs)</div></div>
</blockquote></div><br></div>

--001a114798b2d4af230537e21383--


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From: Greg Shepherd <gjshep@gmail.com>
Date: Sun, 17 Jul 2016 22:17:37 -0700
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Subject: Re: [Bier] BIER WG call for Adoption: mirsky-bier-pmmm-oam
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There has been sufficient show of support to adopt:

https://datatracker.ietf.org/doc/draft-mirsky-bier-pmmm-oam/

as a working BIER WG draft.

The authors are here reminded that they are transferring change control for
this document to the IETF.

Please post the draft with a working group ID, and the chairs will approve.

Thanks!

Greg

On Tue, Jul 5, 2016 at 8:06 AM, Greg Shepherd <gjshep@gmail.com> wrote:

> This email starts a two week timer for WG input on the adoption of:
>
> https://datatracker.ietf.org/doc/draft-mirsky-bier-pmmm-oam/
>
> Please read and respond to this thread with or without your support for
> adoption of this draft. Participation in an IETF WG comes with the
> responsibility to participate. Please do so. :-)
>
> Thanks,
> Greg (chairs)
>

--001a1149e8e437969d0537e21654
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<div dir=3D"ltr">There has been sufficient show of support to adopt:<div><b=
r></div><div><a href=3D"https://datatracker.ietf.org/doc/draft-mirsky-bier-=
pmmm-oam/" target=3D"_blank" style=3D"font-size:13px">https://datatracker.i=
etf.org/doc/draft-mirsky-bier-pmmm-oam/</a><br></div><div><br></div><div>as=
 a working BIER WG draft.</div><div><br></div><div>The authors are here rem=
inded that they are transferring change control for this document to the IE=
TF.</div><div><br></div><div>Please post the draft with a working group ID,=
 and the chairs will approve.</div><div><br></div><div>Thanks!</div><div><b=
r></div><div>Greg</div></div><div class=3D"gmail_extra"><br><div class=3D"g=
mail_quote">On Tue, Jul 5, 2016 at 8:06 AM, Greg Shepherd <span dir=3D"ltr"=
>&lt;<a href=3D"mailto:gjshep@gmail.com" target=3D"_blank">gjshep@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">T=
his email starts a two week timer for WG input on the adoption of:<div><br>=
</div><div><a href=3D"https://datatracker.ietf.org/doc/draft-mirsky-bier-pm=
mm-oam/" target=3D"_blank">https://datatracker.ietf.org/doc/draft-mirsky-bi=
er-pmmm-oam/</a><br></div><div><br></div><div>Please read and respond to th=
is thread with or without your support for adoption of this draft. Particip=
ation in an IETF WG comes with the responsibility to participate. Please do=
 so. :-)</div><div><br></div><div>Thanks,</div><div>Greg (chairs)</div></di=
v>
</blockquote></div><br></div>

--001a1149e8e437969d0537e21654--


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From: Greg Shepherd <gjshep@gmail.com>
Date: Sun, 17 Jul 2016 22:18:41 -0700
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Subject: Re: [Bier] Call for WG Adoption: draft-mirsky-bier-path-mtu-discovery
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--94eb2c061e1c080d9e0537e21acc
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There has been sufficient show of support to adopt:

https://tools.ietf.org/html/draft-mirsky-bier-path-mtu-discovery-01

as a working BIER WG draft.

The authors are here reminded that they are transferring change control for
this document to the IETF.

Please post the draft with a working group ID, and the chairs will approve.

Thanks!
Greg

On Tue, Jul 5, 2016 at 8:03 AM, Greg Shepherd <gjshep@gmail.com> wrote:

> This email starts a two week timer for WG input on the adoption of:
>
> https://tools.ietf.org/html/draft-mirsky-bier-path-mtu-discovery-01
>
> Please read and respond to this thread with or without your support for
> adoption of this draft. Participation in an IETF WG comes with the
> responsibility to participate. Please do so. :-)
>
> Thanks,
> Greg (chairs)
>

--94eb2c061e1c080d9e0537e21acc
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><span style=3D"font-size:13px">There has been sufficient s=
how of support to adopt:</span><div style=3D"font-size:13px"><br></div><div=
 style=3D"font-size:13px"><a href=3D"https://tools.ietf.org/html/draft-mirs=
ky-bier-path-mtu-discovery-01" target=3D"_blank">https://tools.ietf.org/htm=
l/draft-mirsky-bier-path-mtu-discovery-01</a><br></div><div style=3D"font-s=
ize:13px"><br></div><div style=3D"font-size:13px">as a working BIER=C2=A0<s=
pan class=3D"">WG</span>=C2=A0draft.</div><div style=3D"font-size:13px"><br=
></div><div style=3D"font-size:13px">The authors are here reminded that the=
y are transferring change control for this document to the IETF.</div><div =
style=3D"font-size:13px"><br></div><div style=3D"font-size:13px">Please pos=
t the draft with a working group ID, and the chairs will approve.</div><div=
 style=3D"font-size:13px"><br></div><div style=3D"font-size:13px">Thanks!</=
div><div style=3D"font-size:13px">Greg</div></div><div class=3D"gmail_extra=
"><br><div class=3D"gmail_quote">On Tue, Jul 5, 2016 at 8:03 AM, Greg Sheph=
erd <span dir=3D"ltr">&lt;<a href=3D"mailto:gjshep@gmail.com" target=3D"_bl=
ank">gjshep@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_q=
uote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1e=
x"><div dir=3D"ltr">This email starts a two week timer for WG input on the =
adoption of:<div><br></div><div><a href=3D"https://tools.ietf.org/html/draf=
t-mirsky-bier-path-mtu-discovery-01" target=3D"_blank">https://tools.ietf.o=
rg/html/draft-mirsky-bier-path-mtu-discovery-01</a><br></div><div><br></div=
><div>Please read and respond to this thread with or without your support f=
or adoption of this draft. Participation in an IETF WG comes with the respo=
nsibility to participate. Please do so. :-)</div><div><br></div><div>Thanks=
,</div><div>Greg (chairs)</div></div>
</blockquote></div><br></div>

--94eb2c061e1c080d9e0537e21acc--


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From: Greg Shepherd <gjshep@gmail.com>
Date: Sun, 17 Jul 2016 22:19:13 -0700
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Subject: Re: [Bier] Call for WG Adoption: draft-kumarzheng-bier-ping
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--94eb2c072efeef6aac0537e21b77
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There has been sufficient show of support to adopt:

https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02

as a working BIER WG draft.

The authors are here reminded that they are transferring change control for
this document to the IETF.

Please post the draft with a working group ID, and the chairs will approve.

Thanks!
Greg

On Tue, Jul 5, 2016 at 8:02 AM, Greg Shepherd <gjshep@gmail.com> wrote:

> This email starts a two week timer for WG input on the adoption of:
>
> https://tools.ietf.org/html/draft-kumarzheng-bier-ping-02
>
> Please read and respond to this thread with or without your support for
> adoption of this draft. Participation in an IETF WG comes with the
> responsibility to participate. Please do so. :-)
>
> Thanks,
> Greg (chairs)
>

--94eb2c072efeef6aac0537e21b77
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<div dir=3D"ltr"><span style=3D"font-size:13px">There has been sufficient s=
how of support to adopt:</span><div style=3D"font-size:13px"><br></div><div=
 style=3D"font-size:13px"><a href=3D"https://tools.ietf.org/html/draft-kuma=
rzheng-bier-ping-02" target=3D"_blank">https://tools.ietf.org/html/draft-ku=
marzheng-bier-ping-02</a><br></div><div style=3D"font-size:13px"><br></div>=
<div style=3D"font-size:13px">as a working BIER=C2=A0<span class=3D"">WG</s=
pan>=C2=A0draft.</div><div style=3D"font-size:13px"><br></div><div style=3D=
"font-size:13px">The authors are here reminded that they are transferring c=
hange control for this document to the IETF.</div><div style=3D"font-size:1=
3px"><br></div><div style=3D"font-size:13px">Please post the draft with a w=
orking group ID, and the chairs will approve.</div><div style=3D"font-size:=
13px"><br></div><div style=3D"font-size:13px">Thanks!</div><div style=3D"fo=
nt-size:13px">Greg</div></div><div class=3D"gmail_extra"><br><div class=3D"=
gmail_quote">On Tue, Jul 5, 2016 at 8:02 AM, Greg Shepherd <span dir=3D"ltr=
">&lt;<a href=3D"mailto:gjshep@gmail.com" target=3D"_blank">gjshep@gmail.co=
m</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margi=
n:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">=
This email starts a two week timer for WG input on the adoption of:<div><br=
></div><div><a href=3D"https://tools.ietf.org/html/draft-kumarzheng-bier-pi=
ng-02" target=3D"_blank">https://tools.ietf.org/html/draft-kumarzheng-bier-=
ping-02</a><br></div><div><br></div><div>Please read and respond to this th=
read with or without your support for adoption of this draft. Participation=
 in an IETF WG comes with the responsibility to participate. Please do so. =
:-)</div><div><br></div><div>Thanks,</div><div>Greg (chairs)</div></div>
</blockquote></div><br></div>

--94eb2c072efeef6aac0537e21b77--


From nobody Mon Jul 18 06:19:33 2016
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Subject: [Bier] I-D Action: draft-ietf-bier-path-mtu-discovery-00.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 Bit Indexed Explicit Replication of the IETF.

        Title           : Path Maximum Transmission Unit Discovery (PMTUD) for Bit Index Explicit Replication (BIER) Layer
        Authors         : Greg Mirsky
                          Tony Przygienda
                          Andrew Dolganow
	Filename        : draft-ietf-bier-path-mtu-discovery-00.txt
	Pages           : 8
	Date            : 2016-07-18

Abstract:
   This document describes Path Maximum Transmission Unit Discovery
   (PMTUD) in Bit Indexed Explicit Replication (BIER) layer.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-bier-path-mtu-discovery/

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https://tools.ietf.org/html/draft-ietf-bier-path-mtu-discovery-00


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From nobody Mon Jul 18 07:01:22 2016
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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 Bit Indexed Explicit Replication of the IETF.

        Title           : Performance Measurement (PM) with Marking Method in Bit Index Explicit Replication (BIER) Layer
        Authors         : Greg Mirsky
                          Lianshu Zheng
                          Mach Chen
                          Giuseppe Fioccola
	Filename        : draft-ietf-bier-pmmm-oam-00.txt
	Pages           : 7
	Date            : 2016-07-18

Abstract:
   This document describes a passive performance measurement method for
   multicast service over Bit Index Explicit Replication (BIER) domain.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-bier-pmmm-oam/

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https://tools.ietf.org/html/draft-ietf-bier-pmmm-oam-00


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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 Bit Indexed Explicit Replication of the IETF.

        Title           : Multicast VPN Using BIER
        Authors         : Eric C. Rosen
                          Mahesh Sivakumar
                          Sam K Aldrin
                          Andrew Dolganow
                          Tony Przygienda
	Filename        : draft-ietf-bier-mvpn-04.txt
	Pages           : 13
	Date            : 2016-07-18

Abstract:
   The Multicast Virtual Private Network (MVPN) specifications require
   the use of multicast tunnels ("P-tunnels") that traverse a Service
   Provider's backbone network.  The P-tunnels are used for carrying
   multicast traffic across the backbone.  A variety of P-tunnel types
   are supported.  Bit Index Explicit Replication (BIER) is a new
   architecture that provides optimal multicast forwarding through a
   "multicast domain", without requiring intermediate routers to
   maintain any per-flow state or to engage in an explicit tree-building
   protocol.  This document specifies the protocol and procedures that
   allow MVPN to use BIER as the method of carrying multicast traffic
   over an SP backbone network.


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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 Bit Indexed Explicit Replication of the IETF.

        Title           : Multicast using Bit Index Explicit Replication
        Authors         : IJsbrand Wijnands
                          Eric C. Rosen
                          Andrew Dolganow
                          Tony Przygienda
                          Sam K Aldrin
	Filename        : draft-ietf-bier-architecture-04.txt
	Pages           : 36
	Date            : 2016-07-18

Abstract:
   This document specifies a new architecture for the forwarding of
   multicast data packets.  It provides optimal forwarding of multicast
   packets through a "multicast domain".  However, it does not require a
   protocol for explicitly building multicast distribution trees, nor
   does it require intermediate nodes to maintain any per-flow state.
   This architecture is known as "Bit Index Explicit Replication"
   (BIER).  When a multicast data packet enters the domain, the ingress
   router determines the set of egress routers to which the packet needs
   to be sent.  The ingress router then encapsulates the packet in a
   BIER header.  The BIER header contains a bitstring in which each bit
   represents exactly one egress router in the domain; to forward the
   packet to a given set of egress routers, the bits corresponding to
   those routers are set in the BIER header.  Elimination of the per-
   flow state and the explicit tree-building protocols results in a
   considerable simplification.


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

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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 Bit Indexed Explicit Replication of the IETF.

        Title           : BIER Ping and Trace
        Authors         : Nagendra Kumar
                          Carlos Pignataro
                          Nobo Akiya
                          Lianshu Zheng
                          Mach Chen
                          Greg Mirsky
	Filename        : draft-ietf-bier-ping-00.txt
	Pages           : 26
	Date            : 2016-07-19

Abstract:
   Bit Index Explicit Replication (BIER) is an architecture that
   provides optimal multicast forwarding through a "BIER domain" without
   requiring intermediate routers to maintain any multicast related per-
   flow state.  BIER also does not require any explicit tree-building
   protocol for its operation.  A multicast data packet enters a BIER
   domain at a "Bit-Forwarding Ingress Router" (BFIR), and leaves the
   BIER domain at one or more "Bit-Forwarding Egress Routers" (BFERs).
   The BFIR router adds a BIER header to the packet.  The BIER header
   contains a bit-string in which each bit represents exactly one BFER
   to forward the packet to.  The set of BFERs to which the multicast
   packet needs to be forwarded is expressed by setting the bits that
   correspond to those routers in the BIER header.

   This document describes the mechanism and basic BIER OAM packet
   format that can be used to perform failure detection and isolation on
   BIER data plane.


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

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Subject: [Bier] WG Minutes
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Below are the minutes from Tuesday's WG meeting. Please review and provide
feedback before I upload them.

Thanks,
Greg (chairs)

-----
== Chairs ==
Discussion about Future encapsulation is from, quote, one more encap, in
the charter. Mpls ok, so discuss here which one to be.
Documents are still in the experimental track, demands to go for standard
track. Need at least live deployment to do so.
Alia : wglc and review as a first serious conversation to go forth
GregS: how to handle doc publication
Alia: leave in the queue without requesting publication. Allow row modify
the status on the fly

== BGP-LS ==
No comments. Raise of hands show support for adoption. Validation to go on
the mailing list

== DR/DF Election ==
Slide 6 : ".G" in the formula to be clarified later
Discussion on inconsistency periods, shall we go for a sticky behavior or
not ?
Ice answer: both are possible
GregS: reason for the doc is not only bier, but people are asking for
PIM-free networks, so it was ask to gather and discuss requirements in
bier. Can be troublesome is some way, at least a review in other wg such as
ospf or isis is needed to avoid to break the protocols. Furthermore as we
don't want in bier to solve a global problem but to fit bier requirements,
so maybe go for information and address the general problem in IGMP.
PIM chair: people in PIM may be happy with that, just potential discussion
on the hashing function.
Ice answer : don't forget the draft also addresses the DF function, not
just DA.

== FRR extension ==
No questions.
GregS: Expectation to ask for adoption? - Yes
GregS: feedback is welcome and really needed

== Discussion on encapsulation exploration ==
1st question: what can't be addressed with the current architecture?

Tony: New Encapsulation helps how? Bier is 2.5
Pierre Pfister: don't see bier as 2.5 but as layer-3. Really like BIER but
sad not to be able to use natively in IPv6, need for another technology,
and between bier with MPLS and crappy-old multicast I choose the latter
because MPLS is too complicated
Ice+Andrew Dolganow: MPLS use needs clarification. No MPLS control-plane
machinery here, just a reuse of bits

X.HU <http://x.hu/> : need of more analysis to choose the right ones
GregS: wg is experimental, not standard track. It is not about the multiple
required encapsulation but just one to choose.

PierreP: choice of IPv6 in spring was for good reason.
GregCauchie: Simplicity is sought by everyone but simplicity is from where
you stand, for ISP-folks it is usually MPLS and for datacenter folks it is
more IPv6... so maybe there is no answer to "where MPLS breaks" as MPLS
encoding can be pushed anywhere, but rather this is a question of "which
one is the more natural candidate", and from spring discussions + bier
history that followed segment-routing for multicast, maybe at the end IPv6
is the more natural candidate for a second encap.


Alia: beware of IPv6 use, may not work today, so charter says one more
encap but need for the group to achieve the charter and not be too
distracted.

Tony: after all the discussion it seems second encap will be a fork lift.

Many body count to participate in a design team, will ask officially in the
list to throw things around. Interim WG meeting for design team to be
announced on the list - target is late Sept.

--001a11404b904b3faf0537fe81c4
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<div dir=3D"ltr">Below are the minutes from Tuesday&#39;s WG meeting. Pleas=
e review and provide feedback before I upload them.<div><br></div><div>Than=
ks,</div><div>Greg (chairs)</div><div><br></div><div>-----</div><div><span =
style=3D"font-size:13px">=3D=3D Chairs =3D=3D</span><br style=3D"font-size:=
13px"><span style=3D"font-size:13px">Discussion about Future encapsulation =
is from, quote, one more encap, in the charter. Mpls ok, so discuss here wh=
ich one to be.</span><br style=3D"font-size:13px"><span style=3D"font-size:=
13px">Documents are still in the experimental track, demands to go for stan=
dard track. Need at least live deployment to do so.</span><br style=3D"font=
-size:13px"><span style=3D"font-size:13px">Alia : wglc and review as a firs=
t serious conversation to go forth</span><br style=3D"font-size:13px"><span=
 style=3D"font-size:13px">GregS: how to handle doc publication</span><br st=
yle=3D"font-size:13px"><span style=3D"font-size:13px">Alia: leave in the qu=
eue without requesting publication. Allow row modify the status on the fly<=
/span><br style=3D"font-size:13px"><br style=3D"font-size:13px"><span style=
=3D"font-size:13px">=3D=3D BGP-LS =3D=3D</span><br style=3D"font-size:13px"=
><span style=3D"font-size:13px">No comments. Raise of hands show support fo=
r adoption. Validation to go on the mailing list</span><br style=3D"font-si=
ze:13px"><br style=3D"font-size:13px"><span style=3D"font-size:13px">=3D=3D=
 DR/DF Election =3D=3D</span><br style=3D"font-size:13px"><span style=3D"fo=
nt-size:13px">Slide 6 : &quot;.G&quot; in the formula to be clarified later=
</span><br style=3D"font-size:13px"><span style=3D"font-size:13px">Discussi=
on on inconsistency periods, shall we go for a sticky behavior or not ?</sp=
an><br style=3D"font-size:13px"><span style=3D"font-size:13px">Ice answer: =
both are possible</span><br style=3D"font-size:13px"><span style=3D"font-si=
ze:13px">GregS: reason for the doc is not only bier, but people are asking =
for PIM-free networks, so it was ask to gather and discuss requirements in =
bier. Can be troublesome is some way, at least a review in other wg such as=
 ospf or isis is needed to avoid to break the protocols. Furthermore as we =
don&#39;t want in bier to solve a global problem but to fit bier requiremen=
ts, so maybe go for information and address the general problem in IGMP.</s=
pan><br style=3D"font-size:13px"><span style=3D"font-size:13px">PIM chair: =
people in PIM may be happy with that, just potential discussion on the hash=
ing function.</span><br style=3D"font-size:13px"><span style=3D"font-size:1=
3px">Ice answer : don&#39;t forget the draft also addresses the DF function=
, not just DA.</span><br style=3D"font-size:13px"><br style=3D"font-size:13=
px"><span style=3D"font-size:13px">=3D=3D FRR extension =3D=3D</span><br st=
yle=3D"font-size:13px"><span style=3D"font-size:13px">No questions.</span><=
br style=3D"font-size:13px"><span style=3D"font-size:13px">GregS: Expectati=
on to ask for adoption? - Yes</span><br style=3D"font-size:13px"><span styl=
e=3D"font-size:13px">GregS: feedback is welcome and really needed</span><br=
 style=3D"font-size:13px"><br style=3D"font-size:13px"><span style=3D"font-=
size:13px">=3D=3D Discussion on encapsulation exploration =3D=3D</span><br =
style=3D"font-size:13px"><span style=3D"font-size:13px">1st question: what =
can&#39;t be addressed with the current architecture?</span><br style=3D"fo=
nt-size:13px"><br style=3D"font-size:13px"><span style=3D"font-size:13px">T=
ony: New Encapsulation helps how? Bier is 2.5</span><br style=3D"font-size:=
13px"><span style=3D"font-size:13px">Pierre Pfister: don&#39;t see bier as =
2.5 but as layer-3. Really like BIER but sad not to be able to use natively=
 in IPv6, need for another technology, and between bier with MPLS and crapp=
y-old multicast I choose the latter because MPLS is too complicated</span><=
br style=3D"font-size:13px"><span style=3D"font-size:13px">Ice+Andrew Dolga=
now: MPLS use needs clarification. No MPLS control-plane machinery here, ju=
st a reuse of bits</span><br style=3D"font-size:13px"><br style=3D"font-siz=
e:13px"><a href=3D"http://x.hu/" rel=3D"noreferrer" target=3D"_blank" style=
=3D"font-size:13px">X.HU</a><span style=3D"font-size:13px">=C2=A0: need of =
more analysis to choose the right ones</span><br style=3D"font-size:13px"><=
span style=3D"font-size:13px">GregS: wg is experimental, not standard track=
. It is not about the multiple required encapsulation but just one to choos=
e.</span><br style=3D"font-size:13px"><br style=3D"font-size:13px"><span st=
yle=3D"font-size:13px">PierreP: choice of IPv6 in spring was for good reaso=
n.</span><br style=3D"font-size:13px"><span style=3D"font-size:13px">GregCa=
uchie: Simplicity is sought by everyone but simplicity is from where you st=
and, for ISP-folks it is usually MPLS and for datacenter folks it is more I=
Pv6... so maybe there is no answer to &quot;where MPLS breaks&quot; as MPLS=
 encoding can be pushed anywhere, but rather this is a question of &quot;wh=
ich one is the more natural candidate&quot;, and from spring discussions + =
bier history that followed segment-routing for multicast, maybe at the end =
IPv6 is the more natural candidate for a second encap.</span><br style=3D"f=
ont-size:13px"><br style=3D"font-size:13px"><br style=3D"font-size:13px"><s=
pan style=3D"font-size:13px">Alia: beware of IPv6 use, may not work today, =
so charter says one more encap but need for the group to achieve the charte=
r and not be too distracted.</span><br style=3D"font-size:13px"><br style=
=3D"font-size:13px"><span style=3D"font-size:13px">Tony: after all the disc=
ussion it seems second encap will be a fork lift.</span><br style=3D"font-s=
ize:13px"><br style=3D"font-size:13px">Many body count to participate in a =
design team, will ask officially in the list to throw things around.=C2=A0I=
nterim WG meeting for design team to be announced on the list - target is l=
ate Sept.<br></div></div>

--001a11404b904b3faf0537fe81c4--


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Thread-Topic: Comments on PMTUD for BIER draft (draft-ietf-bier-path-mtu-discovery)
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Subject: [Bier] Comments on PMTUD for BIER draft (draft-ietf-bier-path-mtu-discovery)
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Authors,



Comments/questions on PMTUD for BIER draft (NITs sent via separate mail):



Introduction:

For IPv6, fragmentation is not possible at hops along the route; even for I=
Pv4, fragmentation may or may not occur (returning a "too big" ICMP error i=
s an option, even when the "don't fragment" bit is not set).



The second sentence is difficult to parse, incorrect for IPv6 (where discar=
d is the only option), whether or not your intended statement applies to "m=
ost cases" is largely dependent on usage (for real time and interactive app=
lications, this efficiency may be an irrelevant consideration), and where p=
erformance degradation occurs is largely a matter of implementation; I sugg=
est replacing the sentence with one that reads along the lines of:

"In many cases it is more efficient to use the largest size packets that ar=
e less than or equal to the least MTU for any forwarding device along the r=
outed path to the IP destination for these packets."



You could, if you want, add another sentence after this to the effect that =
this "least MTU" is known as Path MTU (PMTU).



Because fragmentation is not guaranteed to occur, the fourth sentence shoul=
d read "Fragmentation may occur ..."



Also, possibly because of the wording chosen, the next to last sentence in =
the first paragraph is incorrect. What an IP packet source needs to know is=
 the least MTU value that will be encountered along the current path (route=
) a set of packets will follow or, in some cases, the least MTU for all suc=
h paths.



As a related observation (which I would understand if you don't want to inc=
lude in this text), the same is true for each successive hop along a routed=
 path.



I think it might be useful to add a short paragraph at the end of the intro=
duction section that points out that PMTU is of particular importance in mu=
lticast usages, such as for BIER.



Terminology:

I believe the BIER-related terminology was previously defined in the BIER a=
rchitecture draft.  If that is true, you could simply omit these definition=
s (you've already provided the reference and I believe you've also provided=
 an expansion with at least the first use of each in the draft), or you cou=
ld list them in a single sentence, indicating that they are used as defined=
 in the BIER architecture draft or you could group them as terms defined in=
 that draft.  Listing them as is currently done seems to imply that they ma=
y not be used in this document as they were defined previously.



Problem Statement:

In the second paragraph -

1)      I suggest inserting "possibly" before "through [a] series of ..." a=
nd replacing "decreasing and increasing size ..." with "varying the size...=
" The most direct approach is to start with the MTU of the local interface =
and decrease if needed (in a common case, defined in RFC 1191, in a single =
step);

2)      it is - in the general case and for current mechanisms - more corre=
ct to use "packet source" instead of "ingress node" and "packet destination=
" instead of "egress."  Also a response from the egress is not guaranteed i=
n all cases for existing PMTU discovery mechanisms.  So you should insert "=
may."



Note: I realize that the wording used is probably correct for the BIER case=
, but in this text you are talking about current mechanisms.



Has the case where the multicast tree is constructed using unicast shortest=
 paths been considered (i.e. - where the tree MTU can be determined as the =
least MTU for the unicast paths from the root to each leaf)?



Assuming that TCP is used (guaranteeing an Ack for each message), is the in=
tent to exclude PMTU discovery specifically as defined in RFC 1191 in all s=
ubsequent statements about what is possible using current PMTU discovery? T=
he assumption of Ping use seems to be implied (which makes sense for the ta=
rget application "BIER").



In section 3 (PMTUD Mechanism for BIER), is "multicast distribution path" r=
eally the correct phrase?



In the first bullet on page 5, should "links" be "paths" - and, if not, how=
 is "egress BIER links" meant to be interpreted?



At the top of page 6, it is not clear what is meant by "BFIR MUST continue =
sending probes using BMS until the bit string is clear or the discovery is =
declared unsuccessful."  AFAICT, we are not specifying anything about the r=
etransmission feature (presumably including at least frequency, backoff, or=
 number of tries) - hence it seems to me that "BFIR sends probes using BMS =
and its own (locally determined) retransmission procedures until either the=
 bit string is clear (contains no set bits), or until the BFIR retransmissi=
on procedure terminates and PMTU discovery is declared unsuccessful."  Sinc=
e it is possible that a compliant locally determined retransmission procedu=
re could terminate after a single transmission (I saw nothing to indicate a=
 minimum number of retransmissions if no response is received for a first o=
ne - though possibly I missed it), the use of "MUST" seems extraordinary.



In subsequent bullets, it seems to me that we might want to include "a BFIR=
 MUST have a locally defined retransmission procedure;" as one of the bulle=
ts.



As usual, the draft is otherwise well-written and extremely useful work.



--

Eric





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<div class=3D"WordSection1">
<p class=3D"MsoPlainText">Authors,</p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText">Comments/questions on PMTUD for BIER draft (NITs =
sent via separate mail):<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Introduction: <o:p></o:p></p>
<p class=3D"MsoPlainText">For IPv6, fragmentation is not possible at hops a=
long the route; even for IPv4, fragmentation may or may not occur (returnin=
g a &quot;too big&quot; ICMP error is an option, even when the &quot;don't =
fragment&quot; bit is not set).
<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">The second sentence is difficult to parse, incorr=
ect for IPv6 (where discard is the only option), whether or not your intend=
ed statement applies to &quot;most cases&quot; is largely dependent on usag=
e (for real time and interactive applications,
 this efficiency may be an irrelevant consideration), and where performance=
 degradation occurs is largely a matter of implementation; I suggest replac=
ing the sentence with one that reads along the lines of:<o:p></o:p></p>
<p class=3D"MsoPlainText">&quot;In many cases it is more efficient to use t=
he largest size packets that are less than or equal to the least MTU for an=
y forwarding device along the routed path to the IP destination for these p=
ackets.&quot;<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">You could, if you want, add another sentence afte=
r this to the effect that this &quot;least MTU&quot; is known as Path MTU (=
PMTU).<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Because fragmentation is not guaranteed to occur,=
 the fourth sentence should read &quot;Fragmentation may occur ...&quot;<o:=
p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Also, possibly because of the wording chosen, the=
 next to last sentence in the first paragraph is incorrect. What an IP pack=
et source needs to know is the least MTU value that will be encountered alo=
ng the current path (route) a set
 of packets will follow or, in some cases, the least MTU for all such paths=
. <o:p>
</o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">As a related observation (which I would understan=
d if you don't want to include in this text), the same is true for each suc=
cessive hop along a routed path.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">I think it might be useful to add a short paragra=
ph at the end of the introduction section that points out that PMTU is of p=
articular importance in multicast usages, such as for BIER.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Terminology:<o:p></o:p></p>
<p class=3D"MsoPlainText">I believe the BIER-related terminology was previo=
usly defined in the BIER architecture draft.&nbsp; If that is true, you cou=
ld simply omit these definitions (you've already provided the reference and=
 I believe you've also provided an expansion
 with at least the first use of each in the draft), or you could list them =
in a single sentence, indicating that they are used as defined in the BIER =
architecture draft or you could group them as terms defined in that draft. =
&nbsp;Listing them as is currently done
 seems to imply that they may not be used in this document as they were def=
ined previously.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Problem Statement: <o:p></o:p></p>
<p class=3D"MsoPlainText">In the second paragraph &#8211; <o:p></o:p></p>
<p class=3D"MsoPlainText" style=3D"margin-left:.5in;text-indent:-.25in;mso-=
list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"mso-list:Ignore">1)<span style=3D"font:=
7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>I suggest inserting &#8220;possibly&#8221; before &=
#8220;through [a] series of &#8230;&#8221; and replacing &quot;decreasing a=
nd increasing size &#8230;&quot; with &quot;varying the size&#8230;&quot; T=
he most direct approach is to start with the MTU of the local interface and=
 decrease if needed
 (in a common case, defined in RFC 1191, in a single step);<o:p></o:p></p>
<p class=3D"MsoPlainText" style=3D"margin-left:.5in;text-indent:-.25in;mso-=
list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"mso-list:Ignore">2)<span style=3D"font:=
7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>it is &#8211; in the general case and for current m=
echanisms &#8211; more correct to use &quot;packet source&quot; instead of =
&quot;ingress node&quot; and &quot;packet destination&quot; instead of &quo=
t;egress.&quot;&nbsp; Also a response from the egress is not guaranteed in =
all cases for
 existing PMTU discovery mechanisms.&nbsp; So you should insert &quot;may.&=
quot;<o:p></o:p></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">Note: I realize that =
the wording used is probably correct for the BIER case, but in this text yo=
u are talking about current mechanisms.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Has the case where the multicast tree is construc=
ted using unicast shortest paths been considered (i.e. - where the tree MTU=
 can be determined as the least MTU for the unicast paths from the root to =
each leaf)?<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Assuming that TCP is used (guaranteeing an Ack fo=
r each message), is the intent to exclude PMTU discovery specifically as de=
fined in RFC 1191 in all subsequent statements about what is possible using=
 current PMTU discovery? The assumption
 of Ping use seems to be implied (which makes sense for the target applicat=
ion &#8220;BIER&#8221;).<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">In section 3 (PMTUD Mechanism for BIER), is &quot=
;multicast distribution path&quot; really the correct phrase?<o:p></o:p></p=
>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">In the first bullet o=
n page 5, should &#8220;links&#8221; be &#8220;paths&#8221; &#8211; and, if=
 not, how is &#8220;egress BIER links&#8221; meant to be interpreted?<o:p><=
/o:p></span></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">At the top of page 6,=
 it is not clear what is meant by &#8220;BFIR MUST continue sending probes =
using BMS until the bit string is clear or the discovery is declared unsucc=
essful.&#8221;&nbsp; AFAICT, we are not specifying anything
 about the retransmission feature (presumably including at least frequency,=
 backoff, or number of tries) &#8211; hence it seems to me that &#8220;BFIR=
 sends probes using BMS
<b><i>and its own (locally determined) retransmission procedures </i></b>un=
til either the bit string is clear (contains no set bits), or until the BFI=
R retransmission procedure terminates and PMTU discovery is declared unsucc=
essful.&#8221;&nbsp; Since it is possible that
 a compliant locally determined retransmission procedure could terminate af=
ter a single transmission (I saw nothing to indicate a minimum number of re=
transmissions if no response is received for a first one &#8211; though pos=
sibly I missed it), the use of &#8220;MUST&#8221;
 seems extraordinary.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">In subsequent bullets=
, it seems to me that we might want to include &#8220;a BFIR MUST have a lo=
cally defined retransmission procedure;&#8221; as one of the bullets.<o:p><=
/o:p></span></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">As usual, the draft i=
s otherwise well-written and extremely useful work.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">--<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span style=3D"color:black">Eric<o:p></o:p></span=
></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
</div>
</body>
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From: "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com>
To: "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com>, "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>, Gregory Mirsky <gregory.mirsky@ericsson.com>, "BIER (bier@ietf.org)" <bier@ietf.org>, "sfc@ietf.org" <sfc@ietf.org>, "nvo3@ietf.org" <nvo3@ietf.org>, "rtg-ooam-dt@ietf.org" <rtg-ooam-dt@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
Thread-Topic: [nvo3] [Bier] Comments to OOAM Requirements draft from Ron Bonica
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Date: Wed, 20 Jul 2016 13:03:17 +0000
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Subject: Re: [Bier] [nvo3] Comments to OOAM Requirements draft from Ron Bonica
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Hi Greg, Authors of ooam-dt set of drafts

Other than current requirements, it will be great to explicitly support the=
 OAM PDU semantics.

  *   apply OAM function_set to group of VNI or band of VNI=92s and this in=
formation carried in same OAM PDU. Although the response can be discrete on=
 a per VNI basis based on how and where the response is triggered from. If =
It=92s proxy from remote NVE, then the response can be a replication to the=
 request. This is will reduce the number of probes which need to be send to=
 perform the OAM functions.
  *   It will be great to designate VNI=92s as L2 or L3 and apply function_=
Set to them. This is implicitly derived in data-path, but for OAM PDUs, it =
will help to make it explicit either via using some flags or some other sem=
antics. Hence we can carry bunch of L2 and L3 vnis with corresponding funct=
ion-set

In case these are valid requirements, which I feel they are. Can they find =
a place in existing document.
I can also come out with a peripheral draft defining these.

Thanks
Saumya.

From: nvo3 <nvo3-bounces@ietf.org<mailto:nvo3-bounces@ietf.org>> on behalf =
of sadikshi <sadikshi@cisco.com<mailto:sadikshi@cisco.com>>
Date: Monday, July 4, 2016 at 8:09 PM
To: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com<mailto:naikumar@=
cisco.com>>, Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.mir=
sky@ericsson.com>>, "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf=
.org<mailto:bier@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.=
org<mailto:sfc@ietf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf=
.org<mailto:nvo3@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.=
org>" <rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<=
mailto:rtgwg@ietf.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: Re: [nvo3] [Bier] Comments to OOAM Requirements draft from Ron Bon=
ica

Hi Nagendra,

Thanks for the response. I missed this one in the below email:


>>>>> REQ#14: Overlay OAM MUST have the ability to discover and exercise
            equal cost multipath (ECMP) paths in its transport network.

This will require the underlay nodes/router/switches to support OAM semanti=
cs, which may not be possible
in case of brownfield deployments (deploying NVO tunnels over existing IP-c=
ore network).


Regards,
Saumya.


From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com<mailto:naikuma=
r@cisco.com>>
Date: Monday, July 4, 2016 at 4:39 PM
To: sadikshi <sadikshi@cisco.com<mailto:sadikshi@cisco.com>>, Gregory Mirsk=
y <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericsson.com>>, "BIER =
(bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier@ietf.org>=
>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@ietf.org>>,=
 "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3@ietf.org>=
>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-dt@ietf.or=
g<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@ietf.org>" <r=
tgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: Re: [Bier] [nvo3] Comments to OOAM Requirements draft from Ron Bon=
ica

HI Saumya,

Please see inline..

Hi Greg,

I have following queries on  Overlay OAM Requirements<https://tools.ietf.or=
g/html/draft-ooamdt-rtgwg-ooam-requirement-00>:


>>>>> REQ#6:  Overlay OAM packets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.

=93Exactly same path=94, should be made explicit if it=92s referring to the=
 underlay transport path.

<Nagendra> Yes, that is the intention. We will clarify it.

"OAM packets SHOULD be fate sharing with data traffic=94 will not apply to =
"REQ#3:  centralized controller=94.
I think =93SHOULD=94 should be treated as a =93MUST=94 if the reference is =
within the document :)



>>>>> REQ#11: Overlay OAM MUST support fault localization of Loss of
            Continuity check.

Does the =93localization=94 maps to overlay node/link context ? Can we have=
 a =93MAY=94 requirement for mapping
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement
to narrow down to underlay for a speedier fault management.

<Nagendra> MAY statement sounds reasonable.

REQ#22 =97 REQ#25 refer to =93per-segment=94.
A =93segment=94 maps to a NVO-tunnel?

<Nagendra> Yes, a segment referes to NVO tunnel between NVEs. Multiple such=
 segments may comprise an end-to-end tunnel.

 Shouldn=92t there be on a  per-VNI basis as well.

<Nagendra>I think  the granularity should definitely at per-VNI level.


>>>>> REQ#7:  Overlay OAM MUST support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.

In case of optical deployments like, fiber management (both request and res=
ponse) can be out-of-band, hence may
need a mention here.
<Nagendra> I see. We will check this.

Thanks for your comments.

Regards,
Nagendra


Thanks
Saumya

From: nvo3 <nvo3-bounces@ietf.org<mailto:nvo3-bounces@ietf.org>> on behalf =
of Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericss=
on.com>>
Date: Tuesday, April 5, 2016 at 1:39 AM
To: "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier=
@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@i=
etf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3=
@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-=
dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@iet=
f.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: [nvo3] Comments to OOAM Requirements draft from Ron Bonica

Dear All,
Ron reviewed the Overlay OAM Requirements<https://tools.ietf.org/html/draft=
-ooamdt-rtgwg-ooam-requirement-00> draft and shared his comments under RB> =
tag. The attached copy has my responses in under GIM> tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements draft and OAM for Overlay Net=
works: Gap Analysis.

                Regards,
                                Greg

--_000_D3B540DB6B713sadikshiciscocom_
Content-Type: text/html; charset="Windows-1252"
Content-ID: <FA27F97C7B9B544C9F51A44790CF59B3@emea.cisco.com>
Content-Transfer-Encoding: quoted-printable

<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1=
252">
</head>
<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>Hi Greg, Authors of ooam-dt set of drafts</div>
<div><br>
</div>
<div>Other than current requirements, it will be great to explicitly suppor=
t the OAM PDU semantics.&nbsp;</div>
<ul>
<li>apply OAM function_set to group of VNI or band of VNI=92s and this info=
rmation carried in same OAM PDU. Although the response can be discrete on a=
 per VNI basis based on how and where the response is triggered from. If It=
=92s proxy from remote NVE, then the
 response can be a replication to the request. This is will reduce the numb=
er of probes which need to be send to perform the OAM functions.</li><li>It=
 will be great to designate VNI=92s as L2 or L3 and apply function_Set to t=
hem. This is implicitly derived in data-path, but for OAM PDUs, it will hel=
p to make it explicit either via using some flags or some other semantics. =
Hence we can carry bunch of
 L2 and L3 vnis with corresponding function-set</li></ul>
<div>In case these are valid requirements, which I feel they are. Can they =
find a place in existing document.</div>
<div>I can also come out with a peripheral draft defining these.&nbsp;</div=
>
<div><br>
</div>
<div>Thanks</div>
<div>Saumya.</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>nvo3 &lt;<a href=3D"mailto:nv=
o3-bounces@ietf.org">nvo3-bounces@ietf.org</a>&gt; on behalf of sadikshi &l=
t;<a href=3D"mailto:sadikshi@cisco.com">sadikshi@cisco.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Monday, July 4, 2016 at 8:09 =
PM<br>
<span style=3D"font-weight:bold">To: </span>&quot;Nagendra Kumar Nainar (na=
ikumar)&quot; &lt;<a href=3D"mailto:naikumar@cisco.com">naikumar@cisco.com<=
/a>&gt;, Gregory Mirsky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.com">=
gregory.mirsky@ericsson.com</a>&gt;, &quot;BIER (<a href=3D"mailto:bier@iet=
f.org">bier@ietf.org</a>)&quot;
 &lt;<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&quot; &lt;<a href=3D"mailto:sfc@i=
etf.org">sfc@ietf.org</a>&gt;, &quot;<a href=3D"mailto:nvo3@ietf.org">nvo3@=
ietf.org</a>&quot; &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&g=
t;, &quot;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&=
quot;
 &lt;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, =
&quot;<a href=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [nvo3] [Bier] Comments=
 to OOAM Requirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div>Hi Nagendra,</div>
<div><br>
</div>
<div>Thanks for the response. I missed this one in the below email:</div>
<div><br>
</div>
<div>
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#14: Overlay OAM MUS=
T have the ability to discover and exercise
            equal cost multipath (ECMP) paths in its transport network.</i>=
</pre>
</div>
<div><br>
</div>
<div>This will require the underlay nodes/router/switches to support OAM se=
mantics, which may not be possible&nbsp;</div>
<div>in case of brownfield deployments (deploying NVO tunnels over existing=
 IP-core network).&nbsp;</div>
<div><br>
</div>
<div><br>
</div>
<div>Regards,</div>
<div>Saumya.</div>
<div><br>
</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>&quot;Nagendra Kumar Nainar (=
naikumar)&quot; &lt;<a href=3D"mailto:naikumar@cisco.com">naikumar@cisco.co=
m</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Monday, July 4, 2016 at 4:39 =
PM<br>
<span style=3D"font-weight:bold">To: </span>sadikshi &lt;<a href=3D"mailto:=
sadikshi@cisco.com">sadikshi@cisco.com</a>&gt;, Gregory Mirsky &lt;<a href=
=3D"mailto:gregory.mirsky@ericsson.com">gregory.mirsky@ericsson.com</a>&gt;=
, &quot;BIER (<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>)&quot;
 &lt;<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&quot; &lt;<a href=3D"mailto:sfc@i=
etf.org">sfc@ietf.org</a>&gt;, &quot;<a href=3D"mailto:nvo3@ietf.org">nvo3@=
ietf.org</a>&quot; &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&g=
t;, &quot;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&=
quot;
 &lt;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, =
&quot;<a href=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [Bier] [nvo3] Comments=
 to OOAM Requirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div>HI Saumya,</div>
<div><br>
</div>
<div>Please see inline..</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Hi Greg,</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
I have following queries on&nbsp;<span style=3D"font-size: 15px;">&nbsp;</s=
pan><a href=3D"https://tools.ietf.org/html/draft-ooamdt-rtgwg-ooam-requirem=
ent-00" style=3D"font-size: 15px;">Overlay OAM Requirements</a>:</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;">&gt;&gt;&gt;&gt;&gt; <i>REQ#6:  Overlay OAM pac=
kets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
=93Exactly same path=94, should be made explicit if it=92s referring to the=
 underlay transport path.</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; Yes, that is the intention. We will clarify it.</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<font face=3D"Calibri,sans-serif" style=3D"widows: 1;">&quot;</font><span s=
tyle=3D"widows: 1;"><font face=3D"Calibri,sans-serif"><span style=3D"font-s=
tyle: italic; font-size: 13.3333px;">OAM packets SHOULD be fate sharing wit=
h data traffic</span><span style=3D"font-style: italic; font-size: 13px;">=
=94</span><span style=3D"font-size: 13.3333px;"><i>&nbsp;</i>will
 not apply to &quot;</span></font></span><i style=3D"widows: 1;"><span styl=
e=3D"font-size: 13.3333px;">REQ#3: &nbsp;</span><span style=3D"font-size: 1=
3.3333px;">centralized controller</span><span style=3D"font-size: 13px;">=
=94</span><span style=3D"font-size: 13.3333px;">.</span></i></div>
<div style=3D"widows: 1;">I think =93SHOULD=94 should be treated as a =93MU=
ST=94 if the reference is within the document :)</div>
</div>
</div>
</span>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#11: Overlay OAM MUS=
T support fault localization of Loss of
            Continuity check.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Does the =93localization=94 maps to overlay node/link context ? Can we have=
 a =93MAY=94 requirement for mapping</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
to narrow down to underlay for a speedier fault management.</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; MAY statement sounds reasonable.</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
REQ#22 =97 REQ#25 refer to =93per-segment=94.&nbsp;</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
A =93segment=94 maps to a NVO-tunnel?&nbsp;</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; Yes, a segment referes to NVO tunnel between NVEs. Mu=
ltiple such segments may comprise an end-to-end tunnel.</div>
<div><br>
</div>
<div>&nbsp;Shouldn=92t there be on a &nbsp;per-VNI basis as well.</div>
<div><br>
</div>
<div>&lt;Nagendra&gt;I think &nbsp;the granularity should definitely at per=
-VNI level.&nbsp;</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#7:  Overlay OAM MUS=
T support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.</i></pre>
<div><br>
</div>
<div>In case of optical deployments like, fiber management (both request an=
d response) can be out-of-band, hence may</div>
<div>need a mention here.&nbsp;</div>
</div>
</div>
</div>
</span>
<div>&lt;Nagendra&gt; I see. We will check this.</div>
<div><br>
</div>
<div>Thanks for your comments.</div>
<div><br>
</div>
<div>Regards,</div>
<div>Nagendra</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Thanks</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Saumya</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION" style=3D"color: rgb(0, 0, 0); font-family=
: Calibri, sans-serif; font-size: 14px;">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>nvo3 &lt;<a href=3D"mailto:nv=
o3-bounces@ietf.org">nvo3-bounces@ietf.org</a>&gt; on behalf of Gregory Mir=
sky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.com">gregory.mirsky@erics=
son.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, April 5, 2016 at 1:3=
9 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;BIER (<a href=3D"mailto:b=
ier@ietf.org">bier@ietf.org</a>)&quot; &lt;<a href=3D"mailto:bier@ietf.org"=
>bier@ietf.org</a>&gt;, &quot;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org<=
/a>&quot; &lt;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&gt;, &quot;<=
a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&quot;
 &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&quot; &lt;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, &quot;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a href=3D"mailto:=
rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[nvo3] Comments to OOAM Re=
quirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micro=
soft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" x=
mlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:/=
/www.w3.org/TR/REC-html40">
<meta name=3D"Generator" content=3D"Microsoft Word 14 (filtered medium)">
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a:visited, span.MsoHyperlinkFollowed
	{mso-style-priority:99;
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	text-decoration:underline;}
span.EmailStyle17
	{mso-style-type:personal-compose;
	font-family:"Calibri","sans-serif";
	color:windowtext;}
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<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">Dear All,<o:p></o:p></p>
<p class=3D"MsoNormal">Ron reviewed the <a href=3D"https://tools.ietf.org/h=
tml/draft-ooamdt-rtgwg-ooam-requirement-00">
Overlay OAM Requirements</a> draft and shared his comments under RB&gt; tag=
. The attached copy has my responses in under GIM&gt; tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements
 draft and OAM for Overlay Networks: Gap Analysis.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Greg<o:p></o:p>=
</p>
</div>
</div>
</div>
</span></div>
</div>
</span></div>
</div>
</span></div>
</div>
</span>
</body>
</html>

--_000_D3B540DB6B713sadikshiciscocom_--


From nobody Wed Jul 20 09:33:10 2016
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Subject: [Bier] IPR Disclosure IDAC Holdings, Inc.'s Statement about IPR related to draft-ietf-bier-use-cases
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Dear Caitlin Bestler, Nagendra Kumar, Rajiv Asati, Mach Chen, Xiaohu Xu, Andrew Dolganow, Tony Przygienda, arkadiy.gulko@thomsonreuters.com, Dom Robinson, Vishal Arya:


An IPR disclosure that pertains to your Internet-Draft entitled "BIER Use
Cases draft-ietf-bier-use-cases-03 .txt" (draft-ietf-bier-use-cases) was
submitted to the IETF Secretariat on  and has been posted on the "IETF Page of
Intellectual Property Rights Disclosures"
(https://datatracker.ietf.org/ipr/2822/). The title of the IPR disclosure is
"IDAC Holdings, Inc.'s Statement about IPR related to
draft-ietf-bier-use-cases"


Thank you

IETF Secretariat


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--94eb2c08bb207793dc05381a3dda
Content-Type: text/plain; charset=UTF-8

*,

Thank you to all who attended and contributed to the lively discussion at
the WG meeting in Berlin this week. This is what WG meetings should be -
and some would say, used to be.

>From a poll in the room, there was consensus to pull together a volunteer
design team to look at the various encap options, and based on
use-case/operational considerations/support the team will pick one
additional encap to document and offer as a WG item. The expectation is the
list of volunteers will attend an interim WG meeting were we will work
together for 2-3 days to hash out the direction and details. This will be a
physical meeting, but will accommodate remote participation as well.

I would like to see this work published and available for further
discussion to the group at large on the list before and in the room during
the next WG meeting in November. Considering the requirements for interim
meeting announcements, the soonest we can reasonably target an interim
meeting is Sept.

Anyone wanting to volunteer as a member of the BIER Encap Design Team,
please send email to the WG chairs. We will compile the list, then target a
suitable location and dates from there. We look forward to pulling this
enthusiastic team together in one direction.

Thanks,
Greg

--94eb2c08bb207793dc05381a3dda
Content-Type: text/html; charset=UTF-8
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<div dir=3D"ltr">*,<div><br></div><div>Thank you to all who attended and co=
ntributed to the lively discussion at the WG meeting in Berlin this week. T=
his is what WG meetings should be - and some would say, used to be.</div><d=
iv><br></div><div>From a poll in the room, there was consensus to pull toge=
ther a volunteer design team to look at the various encap options, and base=
d on use-case/operational considerations/support the team will pick one add=
itional encap to document and offer as a WG item. The expectation is the li=
st of volunteers will attend an interim WG meeting were we will work togeth=
er for 2-3 days to hash out the direction and details. This will be a physi=
cal meeting, but will accommodate remote participation as well.</div><div><=
br></div><div>I would like to see this work published and available for fur=
ther discussion to the group at large on the list before and in the room du=
ring the next WG meeting in November. Considering the requirements for inte=
rim meeting announcements, the soonest we can reasonably target an interim =
meeting is Sept.</div><div><br></div><div>Anyone wanting to volunteer as a =
member of the BIER Encap Design Team, please send email to the WG chairs. W=
e will compile the list, then target a suitable location and dates from the=
re. We look forward to pulling this enthusiastic team together in one direc=
tion.</div><div><br></div><div>Thanks,</div><div>Greg</div><div><br></div><=
div><br></div></div>

--94eb2c08bb207793dc05381a3dda--


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Date: Wed, 20 Jul 2016 19:04:33 -0700
From: Toerless Eckert <eckert@cisco.com>
To: Tony Przygienda <tonysietf@gmail.com>
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Subject: Re: [Bier] comments on draft-bergmann-bier-ccast
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Yes, quite inteesting. Listened to Carstens preso and had a chat
with him afterwards.  Read my comment on roll mailing list,
i was mostly surprised about the target use case. Really an excellent
use case for BIER-TE.  Just throw IP multicast away ;-)

Wrt to the logic:

The basic concept is not RPL specific but could be applied elsewhere:

Bloom-filter: Take eg: 256 bits, compress into 64 bits: Each of the 
256 bits becomes eg: a randomn set of 4 of those 64 bits. You consider
a bit set if all those 4 bits in the compressed 64 bit are set. So
you match against a bitmask instead of a single bit in forwarding.

You can effectively only use this if the trees are sparse (few bits set)
else the number of false positives is getting too high. The exact
stochastics still escapes me. And you could send to a denser group by
just sending differrent copies. But how more efficient that is than
doing thre same thing to BIER/BIER-TE - that type of comparison also escapes me.

RPL storing mode means that the intermediate RPL routers have a routing table,
non-storing mode means they don't - and the root sends packet with effectively
a source route. 

BIER requires intermediate nodes to have BFER routes to build the BIFT.
So you need storing mode. Most lightweight intermediate RPL router implementations
don't seem to implement this (we implement it in IOS, but yeah... not lightweight ;-).
So the draft describes the most simple BIER-TE like forwrding logic where every
link/outgoing-interface is a "bit". 

If you don't need bitstring compression in a RPL network just use
uncompressed bitstring, and you've got a very simple version of BIER-TE.
And with storing routers, you could equally run BIER in these RPL networks.

The 100,000$ problem to apply bloom filters to "normal" (non-RPL) BIER/BIER-TE
environments are the false positives: In BIER-TE they can cause loops.
And the bits can't be reset due to the bloom filter logic. If i remember
BIER (no TE) well enough, we would at least get duplicates if we can not
reset bits (not quite sure about loops). In RPL there is only a spanning
tree from the root, so no alternative path / loops == false positives
are only a little bit wasted bandwidth.

The name BIER-TE for a RPL or any other spanning tree network is of course
somewhat irritating. There's no real "TE" choise - there's only one path
towards every receiver. Maybe call it BIER-HB2 (Hop-By-Hop-Bits).

Cheers
    Toerless

Free Cultural Education Program: If you order a Bit-Burger beer here in
Germany, please do not expect patties or buns. Burger is just from
Burg = castle. Alas, they also serve the beer without the castle.

On Sun, Jul 17, 2016 at 04:08:24AM -0700, Tony Przygienda wrote:
> Read the draft with interest.
> 
> Generally, not sure how it touches BIER specifically. It seems to specify
> RPL extensions. Yes, one could reuse the BIER bit mask to propagate a BLOOM
> filter instead of a perfect mask @ the benefit of 'set bit mask
> compression' vs. the cost of spurious transmissions as the draft
> acknowledges where the degenerate case is a full broadcast. The according
> BIER procedures/approach is nowhere to be found in the draft though ...
> 
> As nit I didn't find in 6550 anything talking about "storing mode" so a
> better reference is needed.
> 
> --- tony

> _______________________________________________
> BIER mailing list
> BIER@ietf.org
> https://www.ietf.org/mailman/listinfo/bier


-- 
---
Toerless Eckert, eckert@cisco.com


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Cc: Routing Over Low power and Lossy networks <roll@ietf.org>, "bier@ietf.org" <bier@ietf.org>, draft-bergmann-bier-ccast@ietf.org
Subject: Re: [Bier] comments on draft-bergmann-bier-ccast
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Hi Tony,

thanks for taking note of this draft.

> Generally, not sure how it touches BIER specifically. It seems to
> specify RPL extensions. 

Indeed. We used the "WG name" BIER in the draft at the time we submitted
the first version because the BIER BOF was just happening and we weren't
sure where this would end up.  By now it is pretty clear this will end
up in ROLL (if at all), but resubmitting the draft to create a new -00
just for a WG name change is confusing.

> Yes, one could reuse the BIER bit mask to
> propagate a BLOOM filter instead of a perfect mask @ the benefit of 'set
> bit mask compression' vs. the cost of spurious transmissions as the
> draft acknowledges where the degenerate case is a full broadcast. The
> according BIER procedures/approach is nowhere to be found in the draft
> though ... 

No, as we are indeed focusing on RPL.

One very important thing we get from RPL is the rank, which allows us to
avoid forwarding loops even though the individual routers are pretty
much oblivious about the structure of the network (non-storing mode is
based on source routes from the root of the destination-oriented
directed acyclic graph, DODAG).  So I wouldn't immediately know how to
generalize the current approach to other underlying unicast routing
protocols.  But the use of bloom filters (instead of bitmaps) to
identify a set of outgoing interfaces is probably extractable, if that
is useful somewhere else.

> As nit I didn't find in 6550 anything talking about "storing mode" so a
> better reference is needed. 

Hmm, I find 81 places in there.  (But Ccast is for non-storing mode.)

GrÃ¼ÃŸe, Carsten


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Date: Thu, 21 Jul 2016 02:13:18 -0700
From: Toerless Eckert <eckert@cisco.com>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
Message-ID: <20160721091318.GA21876@cisco.com>
References: <CA+wi2hOQOG+8YYTNRp7eW42dpFynuiiSd+UofjansWgLYv8DPQ@mail.gmail.com> <579058F8.1040701@tzi.org>
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Thinking more of it (fun to analyse ;-):

Without having done the math, i'd suspect this might be very efficient in
very large networks for small-receiver-sets. Aka: 2048 NFER/receivers, 64
bits bitstring, max normal number of receivers ca. 16 for a packet.

This could be very efficient in very large networks for "small-receiver-set".
Aka: 2048 BFER/receivers. Maybe typically 16 receivers.

This is not 100% tied to RPL. Consider a data-center with 100,000 VMs,
with thousands of 'vlans', each hosting a typically a quite limited
number of VMs. Instead of creating per-VLAN flood-state across the DC
(which AFAIK gets complicated with all the overlay options involved),
you could simply use maybe hmm... 256 ? bits bitstring. 

You need spanning tree forwarding (no redundancy). And you need some
logic figuring out the intermediate  interfaces in the bitstring. In
RPL, the root does this. In a DC this could be more tricky.

On Thu, Jul 21, 2016 at 07:09:12AM +0200, Carsten Bormann wrote:
> Hi Tony,
> 
> thanks for taking note of this draft.
> 
> > Generally, not sure how it touches BIER specifically. It seems to
> > specify RPL extensions. 
> 
> Indeed. We used the "WG name" BIER in the draft at the time we submitted
> the first version because the BIER BOF was just happening and we weren't
> sure where this would end up.  By now it is pretty clear this will end
> up in ROLL (if at all), but resubmitting the draft to create a new -00
> just for a WG name change is confusing.
> 
> > Yes, one could reuse the BIER bit mask to
> > propagate a BLOOM filter instead of a perfect mask @ the benefit of 'set
> > bit mask compression' vs. the cost of spurious transmissions as the
> > draft acknowledges where the degenerate case is a full broadcast. The
> > according BIER procedures/approach is nowhere to be found in the draft
> > though ... 
> 
> No, as we are indeed focusing on RPL.
> 
> One very important thing we get from RPL is the rank, which allows us to
> avoid forwarding loops even though the individual routers are pretty
> much oblivious about the structure of the network (non-storing mode is
> based on source routes from the root of the destination-oriented
> directed acyclic graph, DODAG).  So I wouldn't immediately know how to
> generalize the current approach to other underlying unicast routing
> protocols.  But the use of bloom filters (instead of bitmaps) to
> identify a set of outgoing interfaces is probably extractable, if that
> is useful somewhere else.
> 
> > As nit I didn't find in 6550 anything talking about "storing mode" so a
> > better reference is needed. 
> 
> Hmm, I find 81 places in there.  (But Ccast is for non-storing mode.)
> 
> Grüße, Carsten
> 
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll

-- 
---
Toerless Eckert, eckert@cisco.com


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yep, all good discussion. Of all, I missed the possible looping for BIER of
false positives. That needs treatment before the whole idea is feasible I
think ...

On Thu, Jul 21, 2016 at 2:13 AM, Toerless Eckert <eckert@cisco.com> wrote:

> Thinking more of it (fun to analyse ;-):
>
> Without having done the math, i'd suspect this might be very efficient in
> very large networks for small-receiver-sets. Aka: 2048 NFER/receivers, 64
> bits bitstring, max normal number of receivers ca. 16 for a packet.
>
> This could be very efficient in very large networks for
> "small-receiver-set".
> Aka: 2048 BFER/receivers. Maybe typically 16 receivers.
>
> This is not 100% tied to RPL. Consider a data-center with 100,000 VMs,
> with thousands of 'vlans', each hosting a typically a quite limited
> number of VMs. Instead of creating per-VLAN flood-state across the DC
> (which AFAIK gets complicated with all the overlay options involved),
> you could simply use maybe hmm... 256 ? bits bitstring.
>
> You need spanning tree forwarding (no redundancy). And you need some
> logic figuring out the intermediate  interfaces in the bitstring. In
> RPL, the root does this. In a DC this could be more tricky.
>
> On Thu, Jul 21, 2016 at 07:09:12AM +0200, Carsten Bormann wrote:
> > Hi Tony,
> >
> > thanks for taking note of this draft.
> >
> > > Generally, not sure how it touches BIER specifically. It seems to
> > > specify RPL extensions.
> >
> > Indeed. We used the "WG name" BIER in the draft at the time we submitte=
d
> > the first version because the BIER BOF was just happening and we weren'=
t
> > sure where this would end up.  By now it is pretty clear this will end
> > up in ROLL (if at all), but resubmitting the draft to create a new -00
> > just for a WG name change is confusing.
> >
> > > Yes, one could reuse the BIER bit mask to
> > > propagate a BLOOM filter instead of a perfect mask @ the benefit of
> 'set
> > > bit mask compression' vs. the cost of spurious transmissions as the
> > > draft acknowledges where the degenerate case is a full broadcast. The
> > > according BIER procedures/approach is nowhere to be found in the draf=
t
> > > though ...
> >
> > No, as we are indeed focusing on RPL.
> >
> > One very important thing we get from RPL is the rank, which allows us t=
o
> > avoid forwarding loops even though the individual routers are pretty
> > much oblivious about the structure of the network (non-storing mode is
> > based on source routes from the root of the destination-oriented
> > directed acyclic graph, DODAG).  So I wouldn't immediately know how to
> > generalize the current approach to other underlying unicast routing
> > protocols.  But the use of bloom filters (instead of bitmaps) to
> > identify a set of outgoing interfaces is probably extractable, if that
> > is useful somewhere else.
> >
> > > As nit I didn't find in 6550 anything talking about "storing mode" so=
 a
> > > better reference is needed.
> >
> > Hmm, I find 81 places in there.  (But Ccast is for non-storing mode.)
> >
> > Gr=C3=BC=C3=9Fe, Carsten
> >
> > _______________________________________________
> > Roll mailing list
> > Roll@ietf.org
> > https://www.ietf.org/mailman/listinfo/roll
>
> --
> ---
> Toerless Eckert, eckert@cisco.com
>



--=20
*We=E2=80=99ve heard that a million monkeys at a million keyboards could pr=
oduce
the complete works of Shakespeare; now, thanks to the Internet, we know
that is not true.*
=E2=80=94Robert Wilensky

--001a114aa8d09b25c7053826ac68
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<div dir=3D"ltr">yep, all good discussion. Of all, I missed the possible lo=
oping for BIER of false positives. That needs treatment before the whole id=
ea is feasible I think ...=C2=A0</div><div class=3D"gmail_extra"><br><div c=
lass=3D"gmail_quote">On Thu, Jul 21, 2016 at 2:13 AM, Toerless Eckert <span=
 dir=3D"ltr">&lt;<a href=3D"mailto:eckert@cisco.com" target=3D"_blank">ecke=
rt@cisco.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Thinki=
ng more of it (fun to analyse ;-):<br>
<br>
Without having done the math, i&#39;d suspect this might be very efficient =
in<br>
very large networks for small-receiver-sets. Aka: 2048 NFER/receivers, 64<b=
r>
bits bitstring, max normal number of receivers ca. 16 for a packet.<br>
<br>
This could be very efficient in very large networks for &quot;small-receive=
r-set&quot;.<br>
Aka: 2048 BFER/receivers. Maybe typically 16 receivers.<br>
<br>
This is not 100% tied to RPL. Consider a data-center with 100,000 VMs,<br>
with thousands of &#39;vlans&#39;, each hosting a typically a quite limited=
<br>
number of VMs. Instead of creating per-VLAN flood-state across the DC<br>
(which AFAIK gets complicated with all the overlay options involved),<br>
you could simply use maybe hmm... 256 ? bits bitstring.<br>
<br>
You need spanning tree forwarding (no redundancy). And you need some<br>
logic figuring out the intermediate=C2=A0 interfaces in the bitstring. In<b=
r>
RPL, the root does this. In a DC this could be more tricky.<br>
<div><div class=3D"h5"><br>
On Thu, Jul 21, 2016 at 07:09:12AM +0200, Carsten Bormann wrote:<br>
&gt; Hi Tony,<br>
&gt;<br>
&gt; thanks for taking note of this draft.<br>
&gt;<br>
&gt; &gt; Generally, not sure how it touches BIER specifically. It seems to=
<br>
&gt; &gt; specify RPL extensions.<br>
&gt;<br>
&gt; Indeed. We used the &quot;WG name&quot; BIER in the draft at the time =
we submitted<br>
&gt; the first version because the BIER BOF was just happening and we weren=
&#39;t<br>
&gt; sure where this would end up.=C2=A0 By now it is pretty clear this wil=
l end<br>
&gt; up in ROLL (if at all), but resubmitting the draft to create a new -00=
<br>
&gt; just for a WG name change is confusing.<br>
&gt;<br>
&gt; &gt; Yes, one could reuse the BIER bit mask to<br>
&gt; &gt; propagate a BLOOM filter instead of a perfect mask @ the benefit =
of &#39;set<br>
&gt; &gt; bit mask compression&#39; vs. the cost of spurious transmissions =
as the<br>
&gt; &gt; draft acknowledges where the degenerate case is a full broadcast.=
 The<br>
&gt; &gt; according BIER procedures/approach is nowhere to be found in the =
draft<br>
&gt; &gt; though ...<br>
&gt;<br>
&gt; No, as we are indeed focusing on RPL.<br>
&gt;<br>
&gt; One very important thing we get from RPL is the rank, which allows us =
to<br>
&gt; avoid forwarding loops even though the individual routers are pretty<b=
r>
&gt; much oblivious about the structure of the network (non-storing mode is=
<br>
&gt; based on source routes from the root of the destination-oriented<br>
&gt; directed acyclic graph, DODAG).=C2=A0 So I wouldn&#39;t immediately kn=
ow how to<br>
&gt; generalize the current approach to other underlying unicast routing<br=
>
&gt; protocols.=C2=A0 But the use of bloom filters (instead of bitmaps) to<=
br>
&gt; identify a set of outgoing interfaces is probably extractable, if that=
<br>
&gt; is useful somewhere else.<br>
&gt;<br>
&gt; &gt; As nit I didn&#39;t find in 6550 anything talking about &quot;sto=
ring mode&quot; so a<br>
&gt; &gt; better reference is needed.<br>
&gt;<br>
&gt; Hmm, I find 81 places in there.=C2=A0 (But Ccast is for non-storing mo=
de.)<br>
&gt;<br>
&gt; Gr=C3=BC=C3=9Fe, Carsten<br>
&gt;<br>
</div></div>&gt; _______________________________________________<br>
&gt; Roll mailing list<br>
&gt; <a href=3D"mailto:Roll@ietf.org">Roll@ietf.org</a><br>
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/roll" rel=3D"noreferr=
er" target=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
<div class=3D"HOEnZb"><div class=3D"h5"><br>
--<br>
---<br>
Toerless Eckert, <a href=3D"mailto:eckert@cisco.com">eckert@cisco.com</a><b=
r>
</div></div></blockquote></div><br><br clear=3D"all"><div><br></div>-- <br>=
<div class=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div dir=
=3D"ltr"><div><span style=3D"font-size:12.8000001907349px"><font face=3D"ge=
orgia, serif"><i>We=E2=80=99ve heard that a million monkeys at a million ke=
yboards could produce the complete works of Shakespeare; now, thanks to the=
 Internet, we know that is not true.</i></font></span><i><font face=3D"gara=
mond, serif"><br></font></i></div><div><span style=3D"font-size:12.80000019=
07349px"><font face=3D"times new roman, serif">=E2=80=94Robert Wilensky</fo=
nt></span><br></div></div></div>
</div>

--001a114aa8d09b25c7053826ac68--


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From: "Deepak Kumar (dekumar)" <dekumar@cisco.com>
To: "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com>, "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>, Gregory Mirsky <gregory.mirsky@ericsson.com>, "BIER (bier@ietf.org)" <bier@ietf.org>, "sfc@ietf.org" <sfc@ietf.org>, "nvo3@ietf.org" <nvo3@ietf.org>, "rtg-ooam-dt@ietf.org" <rtg-ooam-dt@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
Thread-Topic: [Rtg-ooam-dt] [nvo3] [Bier] Comments to OOAM Requirements draft from Ron Bonica
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Subject: Re: [Bier] [Rtg-ooam-dt] [nvo3] Comments to OOAM Requirements draft from Ron Bonica
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Hi,

Below requirement looks like deal with ability of OAM to be extensible. We =
should add requirement regarding Extensibility for OAM protocol without add=
ing details of VNI, etc.

Thanks,
Deepak

From: Rtg-ooam-dt <rtg-ooam-dt-bounces@ietf.org<mailto:rtg-ooam-dt-bounces@=
ietf.org>> on behalf of "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com<mai=
lto:sadikshi@cisco.com>>
Date: Wednesday, July 20, 2016 at 6:03 AM
To: "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com<mailto:sadikshi@cisco.c=
om>>, "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com<mailto:naikuma=
r@cisco.com>>, Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.m=
irsky@ericsson.com>>, "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ie=
tf.org<mailto:bier@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@iet=
f.org<mailto:sfc@ietf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ie=
tf.org<mailto:nvo3@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@iet=
f.org>" <rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.or=
g<mailto:rtgwg@ietf.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: Re: [Rtg-ooam-dt] [nvo3] [Bier] Comments to OOAM Requirements draf=
t from Ron Bonica

Hi Greg, Authors of ooam-dt set of drafts

Other than current requirements, it will be great to explicitly support the=
 OAM PDU semantics.

  *   apply OAM function_set to group of VNI or band of VNI=92s and this in=
formation carried in same OAM PDU. Although the response can be discrete on=
 a per VNI basis based on how and where the response is triggered from. If =
It=92s proxy from remote NVE, then the response can be a replication to the=
 request. This is will reduce the number of probes which need to be send to=
 perform the OAM functions.
  *   It will be great to designate VNI=92s as L2 or L3 and apply function_=
Set to them. This is implicitly derived in data-path, but for OAM PDUs, it =
will help to make it explicit either via using some flags or some other sem=
antics. Hence we can carry bunch of L2 and L3 vnis with corresponding funct=
ion-set

In case these are valid requirements, which I feel they are. Can they find =
a place in existing document.
I can also come out with a peripheral draft defining these.

Thanks
Saumya.

From: nvo3 <nvo3-bounces@ietf.org<mailto:nvo3-bounces@ietf.org>> on behalf =
of sadikshi <sadikshi@cisco.com<mailto:sadikshi@cisco.com>>
Date: Monday, July 4, 2016 at 8:09 PM
To: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com<mailto:naikumar@=
cisco.com>>, Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.mir=
sky@ericsson.com>>, "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf=
.org<mailto:bier@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.=
org<mailto:sfc@ietf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf=
.org<mailto:nvo3@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.=
org>" <rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<=
mailto:rtgwg@ietf.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: Re: [nvo3] [Bier] Comments to OOAM Requirements draft from Ron Bon=
ica

Hi Nagendra,

Thanks for the response. I missed this one in the below email:


>>>>> REQ#14: Overlay OAM MUST have the ability to discover and exercise
            equal cost multipath (ECMP) paths in its transport network.

This will require the underlay nodes/router/switches to support OAM semanti=
cs, which may not be possible
in case of brownfield deployments (deploying NVO tunnels over existing IP-c=
ore network).


Regards,
Saumya.


From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com<mailto:naikuma=
r@cisco.com>>
Date: Monday, July 4, 2016 at 4:39 PM
To: sadikshi <sadikshi@cisco.com<mailto:sadikshi@cisco.com>>, Gregory Mirsk=
y <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericsson.com>>, "BIER =
(bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier@ietf.org>=
>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@ietf.org>>,=
 "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3@ietf.org>=
>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-dt@ietf.or=
g<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@ietf.org>" <r=
tgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: Re: [Bier] [nvo3] Comments to OOAM Requirements draft from Ron Bon=
ica

HI Saumya,

Please see inline..

Hi Greg,

I have following queries on  Overlay OAM Requirements<https://tools.ietf.or=
g/html/draft-ooamdt-rtgwg-ooam-requirement-00>:


>>>>> REQ#6:  Overlay OAM packets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.

=93Exactly same path=94, should be made explicit if it=92s referring to the=
 underlay transport path.

<Nagendra> Yes, that is the intention. We will clarify it.

"OAM packets SHOULD be fate sharing with data traffic=94 will not apply to =
"REQ#3:  centralized controller=94.
I think =93SHOULD=94 should be treated as a =93MUST=94 if the reference is =
within the document :)



>>>>> REQ#11: Overlay OAM MUST support fault localization of Loss of
            Continuity check.

Does the =93localization=94 maps to overlay node/link context ? Can we have=
 a =93MAY=94 requirement for mapping
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement
to narrow down to underlay for a speedier fault management.

<Nagendra> MAY statement sounds reasonable.

REQ#22 =97 REQ#25 refer to =93per-segment=94.
A =93segment=94 maps to a NVO-tunnel?

<Nagendra> Yes, a segment referes to NVO tunnel between NVEs. Multiple such=
 segments may comprise an end-to-end tunnel.

 Shouldn=92t there be on a  per-VNI basis as well.

<Nagendra>I think  the granularity should definitely at per-VNI level.


>>>>> REQ#7:  Overlay OAM MUST support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.

In case of optical deployments like, fiber management (both request and res=
ponse) can be out-of-band, hence may
need a mention here.
<Nagendra> I see. We will check this.

Thanks for your comments.

Regards,
Nagendra


Thanks
Saumya

From: nvo3 <nvo3-bounces@ietf.org<mailto:nvo3-bounces@ietf.org>> on behalf =
of Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericss=
on.com>>
Date: Tuesday, April 5, 2016 at 1:39 AM
To: "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier=
@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@i=
etf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3=
@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-=
dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@iet=
f.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: [nvo3] Comments to OOAM Requirements draft from Ron Bonica

Dear All,
Ron reviewed the Overlay OAM Requirements<https://tools.ietf.org/html/draft=
-ooamdt-rtgwg-ooam-requirement-00> draft and shared his comments under RB> =
tag. The attached copy has my responses in under GIM> tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements draft and OAM for Overlay Net=
works: Gap Analysis.

                Regards,
                                Greg

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<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1=
252">
</head>
<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>Hi,</div>
<div><br>
</div>
<div>Below requirement looks like deal with ability of OAM to be extensible=
. We should add requirement regarding Extensibility for OAM protocol withou=
t adding details of VNI, etc.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Deepak</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
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<span style=3D"font-weight:bold">From: </span>Rtg-ooam-dt &lt;<a href=3D"ma=
ilto:rtg-ooam-dt-bounces@ietf.org">rtg-ooam-dt-bounces@ietf.org</a>&gt; on =
behalf of &quot;Saumya Dikshit (sadikshi)&quot; &lt;<a href=3D"mailto:sadik=
shi@cisco.com">sadikshi@cisco.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Wednesday, July 20, 2016 at 6=
:03 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;Saumya Dikshit (sadikshi)=
&quot; &lt;<a href=3D"mailto:sadikshi@cisco.com">sadikshi@cisco.com</a>&gt;=
, &quot;Nagendra Kumar Nainar (naikumar)&quot; &lt;<a href=3D"mailto:naikum=
ar@cisco.com">naikumar@cisco.com</a>&gt;, Gregory Mirsky &lt;<a href=3D"mai=
lto:gregory.mirsky@ericsson.com">gregory.mirsky@ericsson.com</a>&gt;,
 &quot;BIER (<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>)&quot; &lt;=
<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>&gt;, &quot;<a href=3D"ma=
ilto:sfc@ietf.org">sfc@ietf.org</a>&quot; &lt;<a href=3D"mailto:sfc@ietf.or=
g">sfc@ietf.org</a>&gt;, &quot;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.o=
rg</a>&quot;
 &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&quot; &lt;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, &quot;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a href=3D"mailto:=
rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [Rtg-ooam-dt] [nvo3] [=
Bier] Comments to OOAM Requirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div>Hi Greg, Authors of ooam-dt set of drafts</div>
<div><br>
</div>
<div>Other than current requirements, it will be great to explicitly suppor=
t the OAM PDU semantics.&nbsp;</div>
<ul>
<li>apply OAM function_set to group of VNI or band of VNI=92s and this info=
rmation carried in same OAM PDU. Although the response can be discrete on a=
 per VNI basis based on how and where the response is triggered from. If It=
=92s proxy from remote NVE, then the
 response can be a replication to the request. This is will reduce the numb=
er of probes which need to be send to perform the OAM functions.</li><li>It=
 will be great to designate VNI=92s as L2 or L3 and apply function_Set to t=
hem. This is implicitly derived in data-path, but for OAM PDUs, it will hel=
p to make it explicit either via using some flags or some other semantics. =
Hence we can carry bunch of
 L2 and L3 vnis with corresponding function-set</li></ul>
<div>In case these are valid requirements, which I feel they are. Can they =
find a place in existing document.</div>
<div>I can also come out with a peripheral draft defining these.&nbsp;</div=
>
<div><br>
</div>
<div>Thanks</div>
<div>Saumya.</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>nvo3 &lt;<a href=3D"mailto:nv=
o3-bounces@ietf.org">nvo3-bounces@ietf.org</a>&gt; on behalf of sadikshi &l=
t;<a href=3D"mailto:sadikshi@cisco.com">sadikshi@cisco.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Monday, July 4, 2016 at 8:09 =
PM<br>
<span style=3D"font-weight:bold">To: </span>&quot;Nagendra Kumar Nainar (na=
ikumar)&quot; &lt;<a href=3D"mailto:naikumar@cisco.com">naikumar@cisco.com<=
/a>&gt;, Gregory Mirsky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.com">=
gregory.mirsky@ericsson.com</a>&gt;, &quot;BIER (<a href=3D"mailto:bier@iet=
f.org">bier@ietf.org</a>)&quot;
 &lt;<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&quot; &lt;<a href=3D"mailto:sfc@i=
etf.org">sfc@ietf.org</a>&gt;, &quot;<a href=3D"mailto:nvo3@ietf.org">nvo3@=
ietf.org</a>&quot; &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&g=
t;, &quot;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&=
quot;
 &lt;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, =
&quot;<a href=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [nvo3] [Bier] Comments=
 to OOAM Requirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div>Hi Nagendra,</div>
<div><br>
</div>
<div>Thanks for the response. I missed this one in the below email:</div>
<div><br>
</div>
<div>
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#14: Overlay OAM MUS=
T have the ability to discover and exercise
            equal cost multipath (ECMP) paths in its transport network.</i>=
</pre>
</div>
<div><br>
</div>
<div>This will require the underlay nodes/router/switches to support OAM se=
mantics, which may not be possible&nbsp;</div>
<div>in case of brownfield deployments (deploying NVO tunnels over existing=
 IP-core network).&nbsp;</div>
<div><br>
</div>
<div><br>
</div>
<div>Regards,</div>
<div>Saumya.</div>
<div><br>
</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>&quot;Nagendra Kumar Nainar (=
naikumar)&quot; &lt;<a href=3D"mailto:naikumar@cisco.com">naikumar@cisco.co=
m</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Monday, July 4, 2016 at 4:39 =
PM<br>
<span style=3D"font-weight:bold">To: </span>sadikshi &lt;<a href=3D"mailto:=
sadikshi@cisco.com">sadikshi@cisco.com</a>&gt;, Gregory Mirsky &lt;<a href=
=3D"mailto:gregory.mirsky@ericsson.com">gregory.mirsky@ericsson.com</a>&gt;=
, &quot;BIER (<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>)&quot;
 &lt;<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&quot; &lt;<a href=3D"mailto:sfc@i=
etf.org">sfc@ietf.org</a>&gt;, &quot;<a href=3D"mailto:nvo3@ietf.org">nvo3@=
ietf.org</a>&quot; &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&g=
t;, &quot;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&=
quot;
 &lt;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, =
&quot;<a href=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [Bier] [nvo3] Comments=
 to OOAM Requirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div>HI Saumya,</div>
<div><br>
</div>
<div>Please see inline..</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Hi Greg,</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
I have following queries on&nbsp;<span style=3D"font-size: 15px;">&nbsp;</s=
pan><a href=3D"https://tools.ietf.org/html/draft-ooamdt-rtgwg-ooam-requirem=
ent-00" style=3D"font-size: 15px;">Overlay OAM Requirements</a>:</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;">&gt;&gt;&gt;&gt;&gt; <i>REQ#6:  Overlay OAM pac=
kets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
=93Exactly same path=94, should be made explicit if it=92s referring to the=
 underlay transport path.</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; Yes, that is the intention. We will clarify it.</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<font face=3D"Calibri,sans-serif" style=3D"widows: 1;">&quot;</font><span s=
tyle=3D"widows: 1;"><font face=3D"Calibri,sans-serif"><span style=3D"font-s=
tyle: italic; font-size: 13.3333px;">OAM packets SHOULD be fate sharing wit=
h data traffic</span><span style=3D"font-style: italic; font-size: 13px;">=
=94</span><span style=3D"font-size: 13.3333px;"><i>&nbsp;</i>will
 not apply to &quot;</span></font></span><i style=3D"widows: 1;"><span styl=
e=3D"font-size: 13.3333px;">REQ#3: &nbsp;</span><span style=3D"font-size: 1=
3.3333px;">centralized controller</span><span style=3D"font-size: 13px;">=
=94</span><span style=3D"font-size: 13.3333px;">.</span></i></div>
<div style=3D"widows: 1;">I think =93SHOULD=94 should be treated as a =93MU=
ST=94 if the reference is within the document :)</div>
</div>
</div>
</span>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#11: Overlay OAM MUS=
T support fault localization of Loss of
            Continuity check.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Does the =93localization=94 maps to overlay node/link context ? Can we have=
 a =93MAY=94 requirement for mapping</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
to narrow down to underlay for a speedier fault management.</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; MAY statement sounds reasonable.</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
REQ#22 =97 REQ#25 refer to =93per-segment=94.&nbsp;</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
A =93segment=94 maps to a NVO-tunnel?&nbsp;</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; Yes, a segment referes to NVO tunnel between NVEs. Mu=
ltiple such segments may comprise an end-to-end tunnel.</div>
<div><br>
</div>
<div>&nbsp;Shouldn=92t there be on a &nbsp;per-VNI basis as well.</div>
<div><br>
</div>
<div>&lt;Nagendra&gt;I think &nbsp;the granularity should definitely at per=
-VNI level.&nbsp;</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#7:  Overlay OAM MUS=
T support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.</i></pre>
<div><br>
</div>
<div>In case of optical deployments like, fiber management (both request an=
d response) can be out-of-band, hence may</div>
<div>need a mention here.&nbsp;</div>
</div>
</div>
</div>
</span>
<div>&lt;Nagendra&gt; I see. We will check this.</div>
<div><br>
</div>
<div>Thanks for your comments.</div>
<div><br>
</div>
<div>Regards,</div>
<div>Nagendra</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Thanks</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Saumya</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION" style=3D"color: rgb(0, 0, 0); font-family=
: Calibri, sans-serif; font-size: 14px;">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>nvo3 &lt;<a href=3D"mailto:nv=
o3-bounces@ietf.org">nvo3-bounces@ietf.org</a>&gt; on behalf of Gregory Mir=
sky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.com">gregory.mirsky@erics=
son.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, April 5, 2016 at 1:3=
9 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;BIER (<a href=3D"mailto:b=
ier@ietf.org">bier@ietf.org</a>)&quot; &lt;<a href=3D"mailto:bier@ietf.org"=
>bier@ietf.org</a>&gt;, &quot;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org<=
/a>&quot; &lt;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&gt;, &quot;<=
a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&quot;
 &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&quot; &lt;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, &quot;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a href=3D"mailto:=
rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[nvo3] Comments to OOAM Re=
quirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micro=
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	color:purple;
	text-decoration:underline;}
span.EmailStyle17
	{mso-style-type:personal-compose;
	font-family:"Calibri","sans-serif";
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	margin:1.0in 1.0in 1.0in 1.0in;}
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<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
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<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal">Dear All,<o:p></o:p></p>
<p class=3D"MsoNormal">Ron reviewed the <a href=3D"https://tools.ietf.org/h=
tml/draft-ooamdt-rtgwg-ooam-requirement-00">
Overlay OAM Requirements</a> draft and shared his comments under RB&gt; tag=
. The attached copy has my responses in under GIM&gt; tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements
 draft and OAM for Overlay Networks: Gap Analysis.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Greg<o:p></o:p>=
</p>
</div>
</div>
</div>
</span></div>
</div>
</span></div>
</div>
</span></div>
</div>
</span></div>
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From: "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com>
To: "Deepak Kumar (dekumar)" <dekumar@cisco.com>, "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>, Gregory Mirsky <gregory.mirsky@ericsson.com>, "BIER (bier@ietf.org)" <bier@ietf.org>, "sfc@ietf.org" <sfc@ietf.org>, "nvo3@ietf.org" <nvo3@ietf.org>, "rtg-ooam-dt@ietf.org" <rtg-ooam-dt@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
Thread-Topic: [Rtg-ooam-dt] [nvo3] [Bier] Comments to OOAM Requirements draft from Ron Bonica
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References: <D3A02275.68F4D%sadikshi@cisco.com> <D39FBA41.16A342%naikumar@cisco.com> <D3A0A205.68FC7%sadikshi@cisco.com> <D3B540DB.6B713%sadikshi@cisco.com> <D3B69225.19326%dekumar@cisco.com>
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Subject: Re: [Bier] [Rtg-ooam-dt] [nvo3] Comments to OOAM Requirements draft from Ron Bonica
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--_000_D3B71C496BA4Csadikshiciscocom_
Content-Type: text/plain; charset="Windows-1252"
Content-Transfer-Encoding: quoted-printable

Thanks Deepak. I think we should also new define TLVs in draft-ooamdt-rtgwg=
-ooam-header or any alternative publication addressing the requirement.

From: "Deepak Kumar (dekumar)" <dekumar@cisco.com<mailto:dekumar@cisco.com>=
>
Date: Friday, July 22, 2016 at 12:07 AM
To: sadikshi <sadikshi@cisco.com<mailto:sadikshi@cisco.com>>, "Nagendra Kum=
ar Nainar (naikumar)" <naikumar@cisco.com<mailto:naikumar@cisco.com>>, Greg=
ory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericsson.com>=
>, "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier@=
ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@ie=
tf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3@=
ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-d=
t@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@ietf=
.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: Re: [Rtg-ooam-dt] [nvo3] [Bier] Comments to OOAM Requirements draf=
t from Ron Bonica

Hi,

Below requirement looks like deal with ability of OAM to be extensible. We =
should add requirement regarding Extensibility for OAM protocol without add=
ing details of VNI, etc.

Thanks,
Deepak

From: Rtg-ooam-dt <rtg-ooam-dt-bounces@ietf.org<mailto:rtg-ooam-dt-bounces@=
ietf.org>> on behalf of "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com<mai=
lto:sadikshi@cisco.com>>
Date: Wednesday, July 20, 2016 at 6:03 AM
To: "Saumya Dikshit (sadikshi)" <sadikshi@cisco.com<mailto:sadikshi@cisco.c=
om>>, "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com<mailto:naikuma=
r@cisco.com>>, Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.m=
irsky@ericsson.com>>, "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ie=
tf.org<mailto:bier@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@iet=
f.org<mailto:sfc@ietf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ie=
tf.org<mailto:nvo3@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@iet=
f.org>" <rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.or=
g<mailto:rtgwg@ietf.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: Re: [Rtg-ooam-dt] [nvo3] [Bier] Comments to OOAM Requirements draf=
t from Ron Bonica

Hi Greg, Authors of ooam-dt set of drafts

Other than current requirements, it will be great to explicitly support the=
 OAM PDU semantics.

  *   apply OAM function_set to group of VNI or band of VNI=92s and this in=
formation carried in same OAM PDU. Although the response can be discrete on=
 a per VNI basis based on how and where the response is triggered from. If =
It=92s proxy from remote NVE, then the response can be a replication to the=
 request. This is will reduce the number of probes which need to be send to=
 perform the OAM functions.
  *   It will be great to designate VNI=92s as L2 or L3 and apply function_=
Set to them. This is implicitly derived in data-path, but for OAM PDUs, it =
will help to make it explicit either via using some flags or some other sem=
antics. Hence we can carry bunch of L2 and L3 vnis with corresponding funct=
ion-set

In case these are valid requirements, which I feel they are. Can they find =
a place in existing document.
I can also come out with a peripheral draft defining these.

Thanks
Saumya.

From: nvo3 <nvo3-bounces@ietf.org<mailto:nvo3-bounces@ietf.org>> on behalf =
of sadikshi <sadikshi@cisco.com<mailto:sadikshi@cisco.com>>
Date: Monday, July 4, 2016 at 8:09 PM
To: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com<mailto:naikumar@=
cisco.com>>, Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.mir=
sky@ericsson.com>>, "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf=
.org<mailto:bier@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.=
org<mailto:sfc@ietf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf=
.org<mailto:nvo3@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.=
org>" <rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<=
mailto:rtgwg@ietf.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: Re: [nvo3] [Bier] Comments to OOAM Requirements draft from Ron Bon=
ica

Hi Nagendra,

Thanks for the response. I missed this one in the below email:


>>>>> REQ#14: Overlay OAM MUST have the ability to discover and exercise
            equal cost multipath (ECMP) paths in its transport network.

This will require the underlay nodes/router/switches to support OAM semanti=
cs, which may not be possible
in case of brownfield deployments (deploying NVO tunnels over existing IP-c=
ore network).


Regards,
Saumya.


From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com<mailto:naikuma=
r@cisco.com>>
Date: Monday, July 4, 2016 at 4:39 PM
To: sadikshi <sadikshi@cisco.com<mailto:sadikshi@cisco.com>>, Gregory Mirsk=
y <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericsson.com>>, "BIER =
(bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier@ietf.org>=
>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@ietf.org>>,=
 "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3@ietf.org>=
>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-dt@ietf.or=
g<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@ietf.org>" <r=
tgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: Re: [Bier] [nvo3] Comments to OOAM Requirements draft from Ron Bon=
ica

HI Saumya,

Please see inline..

Hi Greg,

I have following queries on  Overlay OAM Requirements<https://tools.ietf.or=
g/html/draft-ooamdt-rtgwg-ooam-requirement-00>:


>>>>> REQ#6:  Overlay OAM packets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.

=93Exactly same path=94, should be made explicit if it=92s referring to the=
 underlay transport path.

<Nagendra> Yes, that is the intention. We will clarify it.

"OAM packets SHOULD be fate sharing with data traffic=94 will not apply to =
"REQ#3:  centralized controller=94.
I think =93SHOULD=94 should be treated as a =93MUST=94 if the reference is =
within the document :)



>>>>> REQ#11: Overlay OAM MUST support fault localization of Loss of
            Continuity check.

Does the =93localization=94 maps to overlay node/link context ? Can we have=
 a =93MAY=94 requirement for mapping
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement
to narrow down to underlay for a speedier fault management.

<Nagendra> MAY statement sounds reasonable.

REQ#22 =97 REQ#25 refer to =93per-segment=94.
A =93segment=94 maps to a NVO-tunnel?

<Nagendra> Yes, a segment referes to NVO tunnel between NVEs. Multiple such=
 segments may comprise an end-to-end tunnel.

 Shouldn=92t there be on a  per-VNI basis as well.

<Nagendra>I think  the granularity should definitely at per-VNI level.


>>>>> REQ#7:  Overlay OAM MUST support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.

In case of optical deployments like, fiber management (both request and res=
ponse) can be out-of-band, hence may
need a mention here.
<Nagendra> I see. We will check this.

Thanks for your comments.

Regards,
Nagendra


Thanks
Saumya

From: nvo3 <nvo3-bounces@ietf.org<mailto:nvo3-bounces@ietf.org>> on behalf =
of Gregory Mirsky <gregory.mirsky@ericsson.com<mailto:gregory.mirsky@ericss=
on.com>>
Date: Tuesday, April 5, 2016 at 1:39 AM
To: "BIER (bier@ietf.org<mailto:bier@ietf.org>)" <bier@ietf.org<mailto:bier=
@ietf.org>>, "sfc@ietf.org<mailto:sfc@ietf.org>" <sfc@ietf.org<mailto:sfc@i=
etf.org>>, "nvo3@ietf.org<mailto:nvo3@ietf.org>" <nvo3@ietf.org<mailto:nvo3=
@ietf.org>>, "rtg-ooam-dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>" <rtg-ooam-=
dt@ietf.org<mailto:rtg-ooam-dt@ietf.org>>, "rtgwg@ietf.org<mailto:rtgwg@iet=
f.org>" <rtgwg@ietf.org<mailto:rtgwg@ietf.org>>
Cc: "rbonica@juniper.net<mailto:rbonica@juniper.net>" <rbonica@juniper.net<=
mailto:rbonica@juniper.net>>
Subject: [nvo3] Comments to OOAM Requirements draft from Ron Bonica

Dear All,
Ron reviewed the Overlay OAM Requirements<https://tools.ietf.org/html/draft=
-ooamdt-rtgwg-ooam-requirement-00> draft and shared his comments under RB> =
tag. The attached copy has my responses in under GIM> tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements draft and OAM for Overlay Net=
works: Gap Analysis.

                Regards,
                                Greg

--_000_D3B71C496BA4Csadikshiciscocom_
Content-Type: text/html; charset="Windows-1252"
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Content-Transfer-Encoding: quoted-printable

<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1=
252">
</head>
<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
e-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-fami=
ly: Calibri, sans-serif;">
<div>Thanks Deepak. I think we should also new define TLVs in&nbsp;<span st=
yle=3D"background-color: rgb(255, 253, 245); font-family: 'PT Mono', Monaco=
, monospace; line-height: 16px; widows: 1;">draft-ooamdt-rtgwg-ooam-header<=
/span>&nbsp;or any alternative publication addressing
 the requirement.</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
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 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>&quot;Deepak Kumar (dekumar)&=
quot; &lt;<a href=3D"mailto:dekumar@cisco.com">dekumar@cisco.com</a>&gt;<br=
>
<span style=3D"font-weight:bold">Date: </span>Friday, July 22, 2016 at 12:0=
7 AM<br>
<span style=3D"font-weight:bold">To: </span>sadikshi &lt;<a href=3D"mailto:=
sadikshi@cisco.com">sadikshi@cisco.com</a>&gt;, &quot;Nagendra Kumar Nainar=
 (naikumar)&quot; &lt;<a href=3D"mailto:naikumar@cisco.com">naikumar@cisco.=
com</a>&gt;, Gregory Mirsky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.c=
om">gregory.mirsky@ericsson.com</a>&gt;,
 &quot;BIER (<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>)&quot; &lt;=
<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>&gt;, &quot;<a href=3D"ma=
ilto:sfc@ietf.org">sfc@ietf.org</a>&quot; &lt;<a href=3D"mailto:sfc@ietf.or=
g">sfc@ietf.org</a>&gt;, &quot;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.o=
rg</a>&quot;
 &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&quot; &lt;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, &quot;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a href=3D"mailto:=
rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [Rtg-ooam-dt] [nvo3] [=
Bier] Comments to OOAM Requirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div>Hi,</div>
<div><br>
</div>
<div>Below requirement looks like deal with ability of OAM to be extensible=
. We should add requirement regarding Extensibility for OAM protocol withou=
t adding details of VNI, etc.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Deepak</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>Rtg-ooam-dt &lt;<a href=3D"ma=
ilto:rtg-ooam-dt-bounces@ietf.org">rtg-ooam-dt-bounces@ietf.org</a>&gt; on =
behalf of &quot;Saumya Dikshit (sadikshi)&quot; &lt;<a href=3D"mailto:sadik=
shi@cisco.com">sadikshi@cisco.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Wednesday, July 20, 2016 at 6=
:03 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;Saumya Dikshit (sadikshi)=
&quot; &lt;<a href=3D"mailto:sadikshi@cisco.com">sadikshi@cisco.com</a>&gt;=
, &quot;Nagendra Kumar Nainar (naikumar)&quot; &lt;<a href=3D"mailto:naikum=
ar@cisco.com">naikumar@cisco.com</a>&gt;, Gregory Mirsky &lt;<a href=3D"mai=
lto:gregory.mirsky@ericsson.com">gregory.mirsky@ericsson.com</a>&gt;,
 &quot;BIER (<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>)&quot; &lt;=
<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>&gt;, &quot;<a href=3D"ma=
ilto:sfc@ietf.org">sfc@ietf.org</a>&quot; &lt;<a href=3D"mailto:sfc@ietf.or=
g">sfc@ietf.org</a>&gt;, &quot;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.o=
rg</a>&quot;
 &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&quot; &lt;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, &quot;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a href=3D"mailto:=
rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [Rtg-ooam-dt] [nvo3] [=
Bier] Comments to OOAM Requirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div>Hi Greg, Authors of ooam-dt set of drafts</div>
<div><br>
</div>
<div>Other than current requirements, it will be great to explicitly suppor=
t the OAM PDU semantics.&nbsp;</div>
<ul>
<li>apply OAM function_set to group of VNI or band of VNI=92s and this info=
rmation carried in same OAM PDU. Although the response can be discrete on a=
 per VNI basis based on how and where the response is triggered from. If It=
=92s proxy from remote NVE, then the
 response can be a replication to the request. This is will reduce the numb=
er of probes which need to be send to perform the OAM functions.</li><li>It=
 will be great to designate VNI=92s as L2 or L3 and apply function_Set to t=
hem. This is implicitly derived in data-path, but for OAM PDUs, it will hel=
p to make it explicit either via using some flags or some other semantics. =
Hence we can carry bunch of
 L2 and L3 vnis with corresponding function-set</li></ul>
<div>In case these are valid requirements, which I feel they are. Can they =
find a place in existing document.</div>
<div>I can also come out with a peripheral draft defining these.&nbsp;</div=
>
<div><br>
</div>
<div>Thanks</div>
<div>Saumya.</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>nvo3 &lt;<a href=3D"mailto:nv=
o3-bounces@ietf.org">nvo3-bounces@ietf.org</a>&gt; on behalf of sadikshi &l=
t;<a href=3D"mailto:sadikshi@cisco.com">sadikshi@cisco.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Monday, July 4, 2016 at 8:09 =
PM<br>
<span style=3D"font-weight:bold">To: </span>&quot;Nagendra Kumar Nainar (na=
ikumar)&quot; &lt;<a href=3D"mailto:naikumar@cisco.com">naikumar@cisco.com<=
/a>&gt;, Gregory Mirsky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.com">=
gregory.mirsky@ericsson.com</a>&gt;, &quot;BIER (<a href=3D"mailto:bier@iet=
f.org">bier@ietf.org</a>)&quot;
 &lt;<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&quot; &lt;<a href=3D"mailto:sfc@i=
etf.org">sfc@ietf.org</a>&gt;, &quot;<a href=3D"mailto:nvo3@ietf.org">nvo3@=
ietf.org</a>&quot; &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&g=
t;, &quot;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&=
quot;
 &lt;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, =
&quot;<a href=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [nvo3] [Bier] Comments=
 to OOAM Requirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div>Hi Nagendra,</div>
<div><br>
</div>
<div>Thanks for the response. I missed this one in the below email:</div>
<div><br>
</div>
<div>
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#14: Overlay OAM MUS=
T have the ability to discover and exercise
            equal cost multipath (ECMP) paths in its transport network.</i>=
</pre>
</div>
<div><br>
</div>
<div>This will require the underlay nodes/router/switches to support OAM se=
mantics, which may not be possible&nbsp;</div>
<div>in case of brownfield deployments (deploying NVO tunnels over existing=
 IP-core network).&nbsp;</div>
<div><br>
</div>
<div><br>
</div>
<div>Regards,</div>
<div>Saumya.</div>
<div><br>
</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>&quot;Nagendra Kumar Nainar (=
naikumar)&quot; &lt;<a href=3D"mailto:naikumar@cisco.com">naikumar@cisco.co=
m</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Monday, July 4, 2016 at 4:39 =
PM<br>
<span style=3D"font-weight:bold">To: </span>sadikshi &lt;<a href=3D"mailto:=
sadikshi@cisco.com">sadikshi@cisco.com</a>&gt;, Gregory Mirsky &lt;<a href=
=3D"mailto:gregory.mirsky@ericsson.com">gregory.mirsky@ericsson.com</a>&gt;=
, &quot;BIER (<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>)&quot;
 &lt;<a href=3D"mailto:bier@ietf.org">bier@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&quot; &lt;<a href=3D"mailto:sfc@i=
etf.org">sfc@ietf.org</a>&gt;, &quot;<a href=3D"mailto:nvo3@ietf.org">nvo3@=
ietf.org</a>&quot; &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&g=
t;, &quot;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&=
quot;
 &lt;<a href=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, =
&quot;<a href=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [Bier] [nvo3] Comments=
 to OOAM Requirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div>HI Saumya,</div>
<div><br>
</div>
<div>Please see inline..</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Hi Greg,</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
I have following queries on&nbsp;<span style=3D"font-size: 15px;">&nbsp;</s=
pan><a href=3D"https://tools.ietf.org/html/draft-ooamdt-rtgwg-ooam-requirem=
ent-00" style=3D"font-size: 15px;">Overlay OAM Requirements</a>:</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;">&gt;&gt;&gt;&gt;&gt; <i>REQ#6:  Overlay OAM pac=
kets SHOULD be fate sharing with data traffic,
            i.e. in-band with the monitored traffic, i.e. follow exactly
            the same path as data plane traffic, in forward direction,
            i.e. from ingress toward egress end point(s) of the OAM test
            session.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
=93Exactly same path=94, should be made explicit if it=92s referring to the=
 underlay transport path.</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; Yes, that is the intention. We will clarify it.</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<font face=3D"Calibri,sans-serif" style=3D"widows: 1;">&quot;</font><span s=
tyle=3D"widows: 1;"><font face=3D"Calibri,sans-serif"><span style=3D"font-s=
tyle: italic; font-size: 13.3333px;">OAM packets SHOULD be fate sharing wit=
h data traffic</span><span style=3D"font-style: italic; font-size: 13px;">=
=94</span><span style=3D"font-size: 13.3333px;"><i>&nbsp;</i>will
 not apply to &quot;</span></font></span><i style=3D"widows: 1;"><span styl=
e=3D"font-size: 13.3333px;">REQ#3: &nbsp;</span><span style=3D"font-size: 1=
3.3333px;">centralized controller</span><span style=3D"font-size: 13px;">=
=94</span><span style=3D"font-size: 13.3333px;">.</span></i></div>
<div style=3D"widows: 1;">I think =93SHOULD=94 should be treated as a =93MU=
ST=94 if the reference is within the document :)</div>
</div>
</div>
</span>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#11: Overlay OAM MUS=
T support fault localization of Loss of
            Continuity check.</i></pre>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Does the =93localization=94 maps to overlay node/link context ? Can we have=
 a =93MAY=94 requirement for mapping</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
it to underlay. Since in datacenter, with more of east-west traffic, there =
might be deployment requirement</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
to narrow down to underlay for a speedier fault management.</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; MAY statement sounds reasonable.</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
REQ#22 =97 REQ#25 refer to =93per-segment=94.&nbsp;</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
A =93segment=94 maps to a NVO-tunnel?&nbsp;</div>
</div>
</div>
</span>
<div><br>
</div>
<div>&lt;Nagendra&gt; Yes, a segment referes to NVO tunnel between NVEs. Mu=
ltiple such segments may comprise an end-to-end tunnel.</div>
<div><br>
</div>
<div>&nbsp;Shouldn=92t there be on a &nbsp;per-VNI basis as well.</div>
<div><br>
</div>
<div>&lt;Nagendra&gt;I think &nbsp;the granularity should definitely at per=
-VNI level.&nbsp;</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<pre class=3D"newpage" style=3D"font-size: 13.3333px; margin-top: 0px; marg=
in-bottom: 0px; widows: 1;"><i>&gt;&gt;&gt;&gt;&gt; REQ#7:  Overlay OAM MUS=
T support bi-directional OAM methods.  Such
            OAM methods MAY combine in-band monitoring or measurement in
            forward direction and out-of-band notification in the
            reverse direction, i.e. from egress to ingress end point of
            the OAM test session.</i></pre>
<div><br>
</div>
<div>In case of optical deployments like, fiber management (both request an=
d response) can be out-of-band, hence may</div>
<div>need a mention here.&nbsp;</div>
</div>
</div>
</div>
</span>
<div>&lt;Nagendra&gt; I see. We will check this.</div>
<div><br>
</div>
<div>Thanks for your comments.</div>
<div><br>
</div>
<div>Regards,</div>
<div>Nagendra</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div>
<div style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line=
-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-famil=
y: Calibri, sans-serif;">
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Thanks</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
Saumya</div>
<div style=3D"color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-s=
ize: 14px;">
<br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION" style=3D"color: rgb(0, 0, 0); font-family=
: Calibri, sans-serif; font-size: 14px;">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM:=
 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid;=
 BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<span style=3D"font-weight:bold">From: </span>nvo3 &lt;<a href=3D"mailto:nv=
o3-bounces@ietf.org">nvo3-bounces@ietf.org</a>&gt; on behalf of Gregory Mir=
sky &lt;<a href=3D"mailto:gregory.mirsky@ericsson.com">gregory.mirsky@erics=
son.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Tuesday, April 5, 2016 at 1:3=
9 AM<br>
<span style=3D"font-weight:bold">To: </span>&quot;BIER (<a href=3D"mailto:b=
ier@ietf.org">bier@ietf.org</a>)&quot; &lt;<a href=3D"mailto:bier@ietf.org"=
>bier@ietf.org</a>&gt;, &quot;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org<=
/a>&quot; &lt;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&gt;, &quot;<=
a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&quot;
 &lt;<a href=3D"mailto:nvo3@ietf.org">nvo3@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&quot; &lt;<a href=
=3D"mailto:rtg-ooam-dt@ietf.org">rtg-ooam-dt@ietf.org</a>&gt;, &quot;<a hre=
f=3D"mailto:rtgwg@ietf.org">rtgwg@ietf.org</a>&quot; &lt;<a href=3D"mailto:=
rtgwg@ietf.org">rtgwg@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:rbonica=
@juniper.net">rbonica@juniper.net</a>&quot; &lt;<a href=3D"mailto:rbonica@j=
uniper.net">rbonica@juniper.net</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[nvo3] Comments to OOAM Re=
quirements draft from Ron Bonica<br>
</div>
<div><br>
</div>
<div xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micro=
soft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" x=
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<p class=3D"MsoNormal">Dear All,<o:p></o:p></p>
<p class=3D"MsoNormal">Ron reviewed the <a href=3D"https://tools.ietf.org/h=
tml/draft-ooamdt-rtgwg-ooam-requirement-00">
Overlay OAM Requirements</a> draft and shared his comments under RB&gt; tag=
. The attached copy has my responses in under GIM&gt; tag as well. We invit=
e members of BIER, NVO3, SCC and RTG WGs to join in the discussion. Appreci=
ate you review, comments on OOAM Requirements
 draft and OAM for Overlay Networks: Gap Analysis.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Greg<o:p></o:p>=
</p>
</div>
</div>
</div>
</span></div>
</div>
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</span></div>
</div>
</span></div>
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From nobody Mon Jul 25 00:01:43 2016
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Subject: [Bier] I-D Action: draft-ietf-bier-bier-yang-00.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 Bit Indexed Explicit Replication of the IETF.

        Title           : YANG Data Model for BIER Protocol
        Authors         : Ran Chen
                          Fangwei Hu
                          Zheng Zhang
                          Xianxian Dai
                          Mahesh Sivakumar
	Filename        : draft-ietf-bier-bier-yang-00.txt
	Pages           : 19
	Date            : 2016-07-24

Abstract:
   This document defines a YANG data model for BIER configuration and
   operation.


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

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-bier-bier-yang-00


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/


From nobody Mon Jul 25 10:36:10 2016
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From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: Eric Gray <eric.gray@ericsson.com>, "bier@ietf.org" <bier@ietf.org>, "draft-ietf-bier-path-mtu-discovery@tools.ietf.org" <draft-ietf-bier-path-mtu-discovery@tools.ietf.org>
Thread-Topic: [Bier] Comments on PMTUD for BIER draft (draft-ietf-bier-path-mtu-discovery)
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Subject: Re: [Bier] Comments on PMTUD for BIER draft (draft-ietf-bier-path-mtu-discovery)
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Hi Eric,
greatly appreciate your thorough review and the most helpful and detailed c=
omments.
Please find responses and notes in-lined and tagged GIM>>.
I've attached the version with the proposed changes and its diff to the pre=
vious version.

                Regards,
                                Greg

From: BIER [mailto:bier-bounces@ietf.org] On Behalf Of Eric Gray
Sent: Wednesday, July 20, 2016 11:05 AM
To: bier@ietf.org; draft-ietf-bier-path-mtu-discovery@tools.ietf.org
Subject: [Bier] Comments on PMTUD for BIER draft (draft-ietf-bier-path-mtu-=
discovery)
Importance: High


Authors,



Comments/questions on PMTUD for BIER draft (NITs sent via separate mail):



Introduction:

For IPv6, fragmentation is not possible at hops along the route; even for I=
Pv4, fragmentation may or may not occur (returning a "too big" ICMP error i=
s an option, even when the "don't fragment" bit is not set).



The second sentence is difficult to parse, incorrect for IPv6 (where discar=
d is the only option), whether or not your intended statement applies to "m=
ost cases" is largely dependent on usage (for real time and interactive app=
lications, this efficiency may be an irrelevant consideration), and where p=
erformance degradation occurs is largely a matter of implementation; I sugg=
est replacing the sentence with one that reads along the lines of:

"In many cases it is more efficient to use the largest size packets that ar=
e less than or equal to the least MTU for any forwarding device along the r=
outed path to the IP destination for these packets."

GIM>> Absolutely agree. And fragmentation is not supported not only for IPv=
6 but for MPLS and Ethernet that may be carried over a BIER domain. Accepte=
d as suggested.



You could, if you want, add another sentence after this to the effect that =
this "least MTU" is known as Path MTU (PMTU).



Because fragmentation is not guaranteed to occur, the fourth sentence shoul=
d read "Fragmentation may occur ..."

GIM>> Perhaps more complete list "Fragmentation or packet drop, silent or n=
ot, may occur ..." work?



Also, possibly because of the wording chosen, the next to last sentence in =
the first paragraph is incorrect. What an IP packet source needs to know is=
 the least MTU value that will be encountered along the current path (route=
) a set of packets will follow or, in some cases, the least MTU for all suc=
h paths.

GIM>> Agree with minor note. To exercise all paths from the ingress border =
router to the given set of destinations operator should run number of PMTUD=
 tests while changing the value of the Entropy field in the BIER header. I =
think that discovering and exercising multipath in the BIER domain is outsi=
de of the scope of this document. Hence the updated sentence:

        To avoid any of the listed above behaviors, the packet source must =
find

        the value of the least MTU, i.e. PMTU, that will be encountered alo=
ng the route that

        a set of packets will follow to reach the given set of destinations=
.



As a related observation (which I would understand if you don't want to inc=
lude in this text), the same is true for each successive hop along a routed=
 path.

GIM>> But that would be the case only if a BFR may act as BFIR. But if that=
 is the case, then an operator may request another PMTUD or configure the P=
MTU to the value previously discovered for the downstream BFR.



I think it might be useful to add a short paragraph at the end of the intro=
duction section that points out that PMTU is of particular importance in mu=
lticast usages, such as for BIER.



Terminology:

I believe the BIER-related terminology was previously defined in the BIER a=
rchitecture draft.  If that is true, you could simply omit these definition=
s (you've already provided the reference and I believe you've also provided=
 an expansion with at least the first use of each in the draft), or you cou=
ld list them in a single sentence, indicating that they are used as defined=
 in the BIER architecture draft or you could group them as terms defined in=
 that draft.  Listing them as is currently done seems to imply that they ma=
y not be used in this document as they were defined previously.

GIM>>  I understand your point but on number occasions was suggested to exp=
licitly list all acronyms used in the document regardless whether they firs=
t introduced in the document or defined elsewhere.



Problem Statement:

In the second paragraph -

1)      I suggest inserting "possibly" before "through [a] series of ..." a=
nd replacing "decreasing and increasing size ..." with "varying the size...=
" The most direct approach is to start with the MTU of the local interface =
and decrease if needed (in a common case, defined in RFC 1191, in a single =
step);

GIM>> Accepted.

2)      it is - in the general case and for current mechanisms - more corre=
ct to use "packet source" instead of "ingress node" and "packet destination=
" instead of "egress."  Also a response from the egress is not guaranteed i=
n all cases for existing PMTU discovery mechanisms.  So you should insert "=
may."

GIM>> Accepted.



Note: I realize that the wording used is probably correct for the BIER case=
, but in this text you are talking about current mechanisms.



Has the case where the multicast tree is constructed using unicast shortest=
 paths been considered (i.e. - where the tree MTU can be determined as the =
least MTU for the unicast paths from the root to each leaf)?

GIM>> AFAIK, there's no restriction on how the multicast tree in the partic=
ular BIER domain constructed. Ensuring the particular PMTU may be the const=
rain used to calculate the tree.



Assuming that TCP is used (guaranteeing an Ack for each message), is the in=
tent to exclude PMTU discovery specifically as defined in RFC 1191 in all s=
ubsequent statements about what is possible using current PMTU discovery? T=
he assumption of Ping use seems to be implied (which makes sense for the ta=
rget application "BIER").

GIM>> I recall several attempts to make multicast TCP work but I cannot rec=
all any one that was successful. Thus we had chosen UDP-like.



In section 3 (PMTUD Mechanism for BIER), is "multicast distribution path" r=
eally the correct phrase?

GIM>> Agreed and changed to "tree".



In the first bullet on page 5, should "links" be "paths" - and, if not, how=
 is "egress BIER links" meant to be interpreted?

GIM>> "BIER link" is logical link between two BFRs. Would the following tex=
t be acceptable:

MTU SHOULD be set to the minimal MTU value among all egress BIER links,

logical links between this and downstream BFRs,

that could be used to reach B's downstream BFERs;



At the top of page 6, it is not clear what is meant by "BFIR MUST continue =
sending probes using BMS until the bit string is clear or the discovery is =
declared unsuccessful."  AFAICT, we are not specifying anything about the r=
etransmission feature (presumably including at least frequency, backoff, or=
 number of tries) - hence it seems to me that "BFIR sends probes using BMS =
and its own (locally determined) retransmission procedures until either the=
 bit string is clear (contains no set bits), or until the BFIR retransmissi=
on procedure terminates and PMTU discovery is declared unsuccessful."  Sinc=
e it is possible that a compliant locally determined retransmission procedu=
re could terminate after a single transmission (I saw nothing to indicate a=
 minimum number of retransmissions if no response is received for a first o=
ne - though possibly I missed it), the use of "MUST" seems extraordinary.

GIM>> Agreed and accepted.



In subsequent bullets, it seems to me that we might want to include "a BFIR=
 MUST have a locally defined retransmission procedure;" as one of the bulle=
ts.

GIM>> Accepted.



As usual, the draft is otherwise well-written and extremely useful work.



--

Eric





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<div class=3D"WordSection1">
<p class=3D"MsoNormal">Hi Eric,<o:p></o:p></p>
<p class=3D"MsoNormal">greatly appreciate your thorough review and the most=
 helpful and detailed comments.<o:p></o:p></p>
<p class=3D"MsoNormal">Please find responses and notes in-lined and tagged =
GIM&gt;&gt;.<o:p></o:p></p>
<p class=3D"MsoNormal">I&#8217;ve attached the version with the proposed ch=
anges and its diff to the previous version.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regards,<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Greg<o:p></o:p>=
</p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> BIER [mailto:bier-bounces@ietf.org] <b>=
On Behalf Of
</b>Eric Gray<br>
<b>Sent:</b> Wednesday, July 20, 2016 11:05 AM<br>
<b>To:</b> bier@ietf.org; draft-ietf-bier-path-mtu-discovery@tools.ietf.org=
<br>
<b>Subject:</b> [Bier] Comments on PMTUD for BIER draft (draft-ietf-bier-pa=
th-mtu-discovery)<br>
<b>Importance:</b> High<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Authors,<o:p></o:p></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText">Comments/questions on PMTUD for BIER draft (NITs =
sent via separate mail):<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Introduction: <o:p></o:p></p>
<p class=3D"MsoPlainText">For IPv6, fragmentation is not possible at hops a=
long the route; even for IPv4, fragmentation may or may not occur (returnin=
g a &quot;too big&quot; ICMP error is an option, even when the &quot;don't =
fragment&quot; bit is not set).
<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">The second sentence is difficult to parse, incorr=
ect for IPv6 (where discard is the only option), whether or not your intend=
ed statement applies to &quot;most cases&quot; is largely dependent on usag=
e (for real time and interactive applications,
 this efficiency may be an irrelevant consideration), and where performance=
 degradation occurs is largely a matter of implementation; I suggest replac=
ing the sentence with one that reads along the lines of:<o:p></o:p></p>
<p class=3D"MsoPlainText">&quot;In many cases it is more efficient to use t=
he largest size packets that are less than or equal to the least MTU for an=
y forwarding device along the routed path to the IP destination for these p=
ackets.&quot;<o:p></o:p></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; Absolutely agree. And fragmentation i=
s not supported not only for IPv6 but for MPLS and Ethernet that may be car=
ried over a BIER domain. Accepted as suggested.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">You could, if you want, add another sentence afte=
r this to the effect that this &quot;least MTU&quot; is known as Path MTU (=
PMTU).<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Because fragmentation is not guaranteed to occur,=
 the fourth sentence should read &quot;Fragmentation may occur ...&quot;<o:=
p></o:p></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; Perhaps more complete list &#8220;Fra=
gmentation or packet drop, silent or not, may occur &#8230;&#8221; work?<o:=
p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Also, possibly because of the wording chosen, the=
 next to last sentence in the first paragraph is incorrect. What an IP pack=
et source needs to know is the least MTU value that will be encountered alo=
ng the current path (route) a set
 of packets will follow or, in some cases, the least MTU for all such paths=
. <o:p>
</o:p></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; Agree with minor note. To exercise al=
l paths from the ingress border router to the given set of destinations ope=
rator should run number of PMTUD tests while changing the value of the Entr=
opy field in the BIER header. I think that
 discovering and exercising multipath in the BIER domain is outside of the =
scope of this document. Hence the updated sentence:<o:p></o:p></p>
<p class=3D"MsoPlainText">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; To avo=
id any of the listed above behaviors, the packet source must find<o:p></o:p=
></p>
<p class=3D"MsoPlainText">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the va=
lue of the least MTU, i.e. PMTU, that will be encountered along the route t=
hat
<o:p></o:p></p>
<p class=3D"MsoPlainText">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a=
 set of packets will follow to reach the given set of destinations.<o:p></o=
:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">As a related observation (which I would understan=
d if you don't want to include in this text), the same is true for each suc=
cessive hop along a routed path.<o:p></o:p></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; But that would be the case only if a =
BFR may act as BFIR. But if that is the case, then an operator may request =
another PMTUD or configure the PMTU to the value previously discovered for =
the downstream BFR.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">I think it might be useful to add a short paragra=
ph at the end of the introduction section that points out that PMTU is of p=
articular importance in multicast usages, such as for BIER.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Terminology:<o:p></o:p></p>
<p class=3D"MsoPlainText">I believe the BIER-related terminology was previo=
usly defined in the BIER architecture draft.&nbsp; If that is true, you cou=
ld simply omit these definitions (you've already provided the reference and=
 I believe you've also provided an expansion
 with at least the first use of each in the draft), or you could list them =
in a single sentence, indicating that they are used as defined in the BIER =
architecture draft or you could group them as terms defined in that draft. =
&nbsp;Listing them as is currently done
 seems to imply that they may not be used in this document as they were def=
ined previously.<o:p></o:p></p>
<p class=3D"MsoPlainText">GIM&gt;&gt;&nbsp; I understand your point but on =
number occasions was suggested to explicitly list all acronyms used in the =
document regardless whether they first introduced in the document or define=
d elsewhere.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Problem Statement: <o:p></o:p></p>
<p class=3D"MsoPlainText">In the second paragraph &#8211; <o:p></o:p></p>
<p class=3D"MsoPlainText" style=3D"margin-left:.5in;text-indent:-.25in;mso-=
list:l0 level1 lfo2">
<![if !supportLists]><span style=3D"mso-list:Ignore">1)<span style=3D"font:=
7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>I suggest inserting &#8220;possibly&#8221; before &=
#8220;through [a] series of &#8230;&#8221; and replacing &quot;decreasing a=
nd increasing size &#8230;&quot; with &quot;varying the size&#8230;&quot; T=
he most direct approach is to start with the MTU of the local interface and=
 decrease if needed
 (in a common case, defined in RFC 1191, in a single step);<o:p></o:p></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; Accepted.<o:p></o:p></p>
<p class=3D"MsoPlainText" style=3D"margin-left:.5in;text-indent:-.25in;mso-=
list:l0 level1 lfo2">
<![if !supportLists]><span style=3D"mso-list:Ignore">2)<span style=3D"font:=
7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>it is &#8211; in the general case and for current m=
echanisms &#8211; more correct to use &quot;packet source&quot; instead of =
&quot;ingress node&quot; and &quot;packet destination&quot; instead of &quo=
t;egress.&quot;&nbsp; Also a response from the egress is not guaranteed in =
all cases for
 existing PMTU discovery mechanisms.&nbsp; So you should insert &quot;may.&=
quot;<o:p></o:p></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; Accepted.<o:p></o:p></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">Note: I realize that =
the wording used is probably correct for the BIER case, but in this text yo=
u are talking about current mechanisms.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Has the case where the multicast tree is construc=
ted using unicast shortest paths been considered (i.e. - where the tree MTU=
 can be determined as the least MTU for the unicast paths from the root to =
each leaf)?<o:p></o:p></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; AFAIK, there&#8217;s no restriction o=
n how the multicast tree in the particular BIER domain constructed. Ensurin=
g the particular PMTU may be the constrain used to calculate the tree.<o:p>=
</o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Assuming that TCP is used (guaranteeing an Ack fo=
r each message), is the intent to exclude PMTU discovery specifically as de=
fined in RFC 1191 in all subsequent statements about what is possible using=
 current PMTU discovery? The assumption
 of Ping use seems to be implied (which makes sense for the target applicat=
ion &#8220;BIER&#8221;).<o:p></o:p></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; I recall several attempts to make mul=
ticast TCP work but I cannot recall any one that was successful. Thus we ha=
d chosen UDP-like.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">In section 3 (PMTUD Mechanism for BIER), is &quot=
;multicast distribution path&quot; really the correct phrase?<o:p></o:p></p=
>
<p class=3D"MsoPlainText">GIM&gt;&gt; Agreed and changed to &#8220;tree&#82=
21;.<o:p></o:p></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">In the first bullet o=
n page 5, should &#8220;links&#8221; be &#8220;paths&#8221; &#8211; and, if=
 not, how is &#8220;egress BIER links&#8221; meant to be interpreted?<o:p><=
/o:p></span></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; &#8220;BIER link&#8221; is logical li=
nk between two BFRs. Would the following text be acceptable:<o:p></o:p></p>
<p class=3D"MsoPlainText" style=3D"margin-left:.5in">MTU SHOULD be set to t=
he minimal MTU value among all egress BIER links,<o:p></o:p></p>
<p class=3D"MsoPlainText" style=3D"margin-left:.5in">logical links between =
this and downstream BFRs,
<o:p></o:p></p>
<p class=3D"MsoPlainText" style=3D"margin-left:.5in">that could be used to =
reach B's downstream BFERs;<o:p></o:p></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">At the top of page 6,=
 it is not clear what is meant by &#8220;BFIR MUST continue sending probes =
using BMS until the bit string is clear or the discovery is declared unsucc=
essful.&#8221;&nbsp; AFAICT, we are not specifying anything
 about the retransmission feature (presumably including at least frequency,=
 backoff, or number of tries) &#8211; hence it seems to me that &#8220;BFIR=
 sends probes using BMS
<b><i>and its own (locally determined) retransmission procedures </i></b>un=
til either the bit string is clear (contains no set bits), or until the BFI=
R retransmission procedure terminates and PMTU discovery is declared unsucc=
essful.&#8221;&nbsp; Since it is possible that
 a compliant locally determined retransmission procedure could terminate af=
ter a single transmission (I saw nothing to indicate a minimum number of re=
transmissions if no response is received for a first one &#8211; though pos=
sibly I missed it), the use of &#8220;MUST&#8221;
 seems extraordinary.<o:p></o:p></span></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; Agreed and accepted.<o:p></o:p></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">In subsequent bullets=
, it seems to me that we might want to include &#8220;a BFIR MUST have a lo=
cally defined retransmission procedure;&#8221; as one of the bullets.<o:p><=
/o:p></span></p>
<p class=3D"MsoPlainText">GIM&gt;&gt; Accepted.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">As usual, the draft i=
s otherwise well-written and extremely useful work.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span style=3D"color:black">--<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span style=3D"color:black">Eric<o:p></o:p></span=
></p>
<p class=3D"MsoPlainText"><span style=3D"color:black"><o:p>&nbsp;</o:p></sp=
an></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
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From: Greg Shepherd <gjshep@gmail.com>
Date: Thu, 28 Jul 2016 09:32:53 -0700
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Subject: Re: [Bier] Alternate Encap Design Team - Call for volunteers
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--94eb2c0629368751890538b4afa0
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Thank you to the 9 responders so far to the call. I'm going to start a
date/location poll for the current list of volunteers. If others are
interested in joining, the call is still open. Please send email to the
chairs requesting to be added.

Thanks!,
Greg

On Wed, Jul 20, 2016 at 5:17 PM, Greg Shepherd <gjshep@gmail.com> wrote:

> *,
>
> Thank you to all who attended and contributed to the lively discussion at
> the WG meeting in Berlin this week. This is what WG meetings should be -
> and some would say, used to be.
>
> From a poll in the room, there was consensus to pull together a volunteer
> design team to look at the various encap options, and based on
> use-case/operational considerations/support the team will pick one
> additional encap to document and offer as a WG item. The expectation is the
> list of volunteers will attend an interim WG meeting were we will work
> together for 2-3 days to hash out the direction and details. This will be a
> physical meeting, but will accommodate remote participation as well.
>
> I would like to see this work published and available for further
> discussion to the group at large on the list before and in the room during
> the next WG meeting in November. Considering the requirements for interim
> meeting announcements, the soonest we can reasonably target an interim
> meeting is Sept.
>
> Anyone wanting to volunteer as a member of the BIER Encap Design Team,
> please send email to the WG chairs. We will compile the list, then target a
> suitable location and dates from there. We look forward to pulling this
> enthusiastic team together in one direction.
>
> Thanks,
> Greg
>
>
>

--94eb2c0629368751890538b4afa0
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<div dir=3D"ltr">Thank you to the 9 responders so far to the call. I&#39;m =
going to start a date/location poll for the current list of volunteers. If =
others are interested in joining, the call is still open. Please send email=
 to the chairs requesting to be added.<div><br></div><div>Thanks!,</div><di=
v>Greg</div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote"=
>On Wed, Jul 20, 2016 at 5:17 PM, Greg Shepherd <span dir=3D"ltr">&lt;<a hr=
ef=3D"mailto:gjshep@gmail.com" target=3D"_blank">gjshep@gmail.com</a>&gt;</=
span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8e=
x;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">*,<div><br>=
</div><div>Thank you to all who attended and contributed to the lively disc=
ussion at the WG meeting in Berlin this week. This is what WG meetings shou=
ld be - and some would say, used to be.</div><div><br></div><div>From a pol=
l in the room, there was consensus to pull together a volunteer design team=
 to look at the various encap options, and based on use-case/operational co=
nsiderations/support the team will pick one additional encap to document an=
d offer as a WG item. The expectation is the list of volunteers will attend=
 an interim WG meeting were we will work together for 2-3 days to hash out =
the direction and details. This will be a physical meeting, but will accomm=
odate remote participation as well.</div><div><br></div><div>I would like t=
o see this work published and available for further discussion to the group=
 at large on the list before and in the room during the next WG meeting in =
November. Considering the requirements for interim meeting announcements, t=
he soonest we can reasonably target an interim meeting is Sept.</div><div><=
br></div><div>Anyone wanting to volunteer as a member of the BIER Encap Des=
ign Team, please send email to the WG chairs. We will compile the list, the=
n target a suitable location and dates from there. We look forward to pulli=
ng this enthusiastic team together in one direction.</div><div><br></div><d=
iv>Thanks,</div><div>Greg</div><div><br></div><div><br></div></div>
</blockquote></div><br></div>

--94eb2c0629368751890538b4afa0--


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From: Greg Shepherd <gjshep@gmail.com>
Date: Thu, 28 Jul 2016 09:40:49 -0700
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To: "bier@ietf.org" <bier@ietf.org>
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Subject: Re: [Bier] Alternate Encap Design Team - Call for volunteers
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*,

Let me add, that if you DID NOT send email to this request, you are not on
the current list for the Alt Encap Design team. The call for hands in the
room was just to gauge interest. The official call is here on the list and
you need to respond on the list or you will not be included.

Thanks,
Greg

On Thu, Jul 28, 2016 at 9:32 AM, Greg Shepherd <gjshep@gmail.com> wrote:

> Thank you to the 9 responders so far to the call. I'm going to start a
> date/location poll for the current list of volunteers. If others are
> interested in joining, the call is still open. Please send email to the
> chairs requesting to be added.
>
> Thanks!,
> Greg
>
> On Wed, Jul 20, 2016 at 5:17 PM, Greg Shepherd <gjshep@gmail.com> wrote:
>
>> *,
>>
>> Thank you to all who attended and contributed to the lively discussion at
>> the WG meeting in Berlin this week. This is what WG meetings should be -
>> and some would say, used to be.
>>
>> From a poll in the room, there was consensus to pull together a volunteer
>> design team to look at the various encap options, and based on
>> use-case/operational considerations/support the team will pick one
>> additional encap to document and offer as a WG item. The expectation is the
>> list of volunteers will attend an interim WG meeting were we will work
>> together for 2-3 days to hash out the direction and details. This will be a
>> physical meeting, but will accommodate remote participation as well.
>>
>> I would like to see this work published and available for further
>> discussion to the group at large on the list before and in the room during
>> the next WG meeting in November. Considering the requirements for interim
>> meeting announcements, the soonest we can reasonably target an interim
>> meeting is Sept.
>>
>> Anyone wanting to volunteer as a member of the BIER Encap Design Team,
>> please send email to the WG chairs. We will compile the list, then target a
>> suitable location and dates from there. We look forward to pulling this
>> enthusiastic team together in one direction.
>>
>> Thanks,
>> Greg
>>
>>
>>
>

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<div dir=3D"ltr">*,<div><br></div><div>Let me add, that if you DID NOT send=
 email to this request, you are not on the current list for the Alt Encap D=
esign team. The call for hands in the room was just to gauge interest. The =
official call is here on the list and you need to respond on the list or yo=
u will not be included.</div><div><br></div><div>Thanks,</div><div>Greg</di=
v></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Thu, J=
ul 28, 2016 at 9:32 AM, Greg Shepherd <span dir=3D"ltr">&lt;<a href=3D"mail=
to:gjshep@gmail.com" target=3D"_blank">gjshep@gmail.com</a>&gt;</span> wrot=
e:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-l=
eft:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">Thank you to the 9 re=
sponders so far to the call. I&#39;m going to start a date/location poll fo=
r the current list of volunteers. If others are interested in joining, the =
call is still open. Please send email to the chairs requesting to be added.=
<div><br></div><div>Thanks!,</div><div>Greg</div></div><div class=3D"gmail_=
extra"><br><div class=3D"gmail_quote"><span class=3D"">On Wed, Jul 20, 2016=
 at 5:17 PM, Greg Shepherd <span dir=3D"ltr">&lt;<a href=3D"mailto:gjshep@g=
mail.com" target=3D"_blank">gjshep@gmail.com</a>&gt;</span> wrote:<br></spa=
n><div><div class=3D"h5"><blockquote class=3D"gmail_quote" style=3D"margin:=
0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr">*,=
<div><br></div><div>Thank you to all who attended and contributed to the li=
vely discussion at the WG meeting in Berlin this week. This is what WG meet=
ings should be - and some would say, used to be.</div><div><br></div><div>F=
rom a poll in the room, there was consensus to pull together a volunteer de=
sign team to look at the various encap options, and based on use-case/opera=
tional considerations/support the team will pick one additional encap to do=
cument and offer as a WG item. The expectation is the list of volunteers wi=
ll attend an interim WG meeting were we will work together for 2-3 days to =
hash out the direction and details. This will be a physical meeting, but wi=
ll accommodate remote participation as well.</div><div><br></div><div>I wou=
ld like to see this work published and available for further discussion to =
the group at large on the list before and in the room during the next WG me=
eting in November. Considering the requirements for interim meeting announc=
ements, the soonest we can reasonably target an interim meeting is Sept.</d=
iv><div><br></div><div>Anyone wanting to volunteer as a member of the BIER =
Encap Design Team, please send email to the WG chairs. We will compile the =
list, then target a suitable location and dates from there. We look forward=
 to pulling this enthusiastic team together in one direction.</div><div><br=
></div><div>Thanks,</div><div>Greg</div><div><br></div><div><br></div></div=
>
</blockquote></div></div></div><br></div>
</blockquote></div><br></div>

--94eb2c08bb20f64f8a0538b4cbab--


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From: Neale Ranns <neale.ranns@cisco.com>
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Subject: Re: [Bier] Alternate Encap Design Team - Call for volunteers
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On 28/07/16 17:40, Greg Shepherd wrote:
> *,
>
> Let me add, that if you DID NOT send email to this request, you are not on the
> current list for the Alt Encap Design team. The call for hands in the room was
> just to gauge interest. The official call is here on the list and you need to
> respond on the list or you will not be included.
>
> Thanks,
> Greg
>
> On Thu, Jul 28, 2016 at 9:32 AM, Greg Shepherd <gjshep@gmail.com
> <mailto:gjshep@gmail.com>> wrote:
>
>     Thank you to the 9 responders so far to the call. I'm going to start a
>     date/location poll for the current list of volunteers. If others are
>     interested in joining, the call is still open. Please send email to the
>     chairs requesting to be added.
>
>     Thanks!,
>     Greg
>
>     On Wed, Jul 20, 2016 at 5:17 PM, Greg Shepherd <gjshep@gmail.com
>     <mailto:gjshep@gmail.com>> wrote:
>
>         *,
>
>         Thank you to all who attended and contributed to the lively discussion
>         at the WG meeting in Berlin this week. This is what WG meetings should
>         be - and some would say, used to be.
>
>         From a poll in the room, there was consensus to pull together a
>         volunteer design team to look at the various encap options, and based on
>         use-case/operational considerations/support the team will pick one
>         additional encap to document and offer as a WG item. The expectation is
>         the list of volunteers will attend an interim WG meeting were we will
>         work together for 2-3 days to hash out the direction and details. This
>         will be a physical meeting, but will accommodate remote participation as
>         well.
>
>         I would like to see this work published and available for further
>         discussion to the group at large on the list before and in the room
>         during the next WG meeting in November. Considering the requirements for
>         interim meeting announcements, the soonest we can reasonably target an
>         interim meeting is Sept.
>
>         Anyone wanting to volunteer as a member of the BIER Encap Design Team,
>         please send email to the WG chairs. We will compile the list, then
>         target a suitable location and dates from there. We look forward to
>         pulling this enthusiastic team together in one direction.
>
>         Thanks,
>         Greg
>
>
>
>
>
>
> _______________________________________________
> BIER mailing list
> BIER@ietf.org
> https://www.ietf.org/mailman/listinfo/bier
>


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From: "Rajiv Asati (rajiva)" <rajiva@cisco.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>
Thread-Topic: [Bier] Alternate Encap Design Team - Call for volunteers
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Date: Thu, 28 Jul 2016 17:41:07 +0000
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Subject: Re: [Bier] Alternate Encap Design Team - Call for volunteers
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I would like to volunteer.

Cheers,
Rajiv


On Jul 28, 2016, at 12:41 PM, Greg Shepherd <gjshep@gmail.com<mailto:gjshep=
@gmail.com>> wrote:

*,

Let me add, that if you DID NOT send email to this request, you are not on =
the current list for the Alt Encap Design team. The call for hands in the r=
oom was just to gauge interest. The official call is here on the list and y=
ou need to respond on the list or you will not be included.

Thanks,
Greg

On Thu, Jul 28, 2016 at 9:32 AM, Greg Shepherd <gjshep@gmail.com<mailto:gjs=
hep@gmail.com>> wrote:
Thank you to the 9 responders so far to the call. I'm going to start a date=
/location poll for the current list of volunteers. If others are interested=
 in joining, the call is still open. Please send email to the chairs reques=
ting to be added.

Thanks!,
Greg

On Wed, Jul 20, 2016 at 5:17 PM, Greg Shepherd <gjshep@gmail.com<mailto:gjs=
hep@gmail.com>> wrote:
*,

Thank you to all who attended and contributed to the lively discussion at t=
he WG meeting in Berlin this week. This is what WG meetings should be - and=
 some would say, used to be.

>From a poll in the room, there was consensus to pull together a volunteer d=
esign team to look at the various encap options, and based on use-case/oper=
ational considerations/support the team will pick one additional encap to d=
ocument and offer as a WG item. The expectation is the list of volunteers w=
ill attend an interim WG meeting were we will work together for 2-3 days to=
 hash out the direction and details. This will be a physical meeting, but w=
ill accommodate remote participation as well.

I would like to see this work published and available for further discussio=
n to the group at large on the list before and in the room during the next =
WG meeting in November. Considering the requirements for interim meeting an=
nouncements, the soonest we can reasonably target an interim meeting is Sep=
t.

Anyone wanting to volunteer as a member of the BIER Encap Design Team, plea=
se send email to the WG chairs. We will compile the list, then target a sui=
table location and dates from there. We look forward to pulling this enthus=
iastic team together in one direction.

Thanks,
Greg




_______________________________________________
BIER mailing list
BIER@ietf.org<mailto:BIER@ietf.org>
https://www.ietf.org/mailman/listinfo/bier

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<div>I would like to volunteer.&nbsp;<br>
<br>
Cheers,
<div>Rajiv &nbsp;</div>
<div><br>
</div>
</div>
<div><br>
On Jul 28, 2016, at 12:41 PM, Greg Shepherd &lt;<a href=3D"mailto:gjshep@gm=
ail.com">gjshep@gmail.com</a>&gt; wrote:<br>
<br>
</div>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">*,
<div><br>
</div>
<div>Let me add, that if you DID NOT send email to this request, you are no=
t on the current list for the Alt Encap Design team. The call for hands in =
the room was just to gauge interest. The official call is here on the list =
and you need to respond on the list
 or you will not be included.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Greg</div>
</div>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Thu, Jul 28, 2016 at 9:32 AM, Greg Shepherd <=
span dir=3D"ltr">
&lt;<a href=3D"mailto:gjshep@gmail.com" target=3D"_blank">gjshep@gmail.com<=
/a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<div dir=3D"ltr">Thank you to the 9 responders so far to the call. I'm goin=
g to start a date/location poll for the current list of volunteers. If othe=
rs are interested in joining, the call is still open. Please send email to =
the chairs requesting to be added.
<div><br>
</div>
<div>Thanks!,</div>
<div>Greg</div>
</div>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote"><span class=3D"">On Wed, Jul 20, 2016 at 5:17 PM=
, Greg Shepherd
<span dir=3D"ltr">&lt;<a href=3D"mailto:gjshep@gmail.com" target=3D"_blank"=
>gjshep@gmail.com</a>&gt;</span> wrote:<br>
</span>
<div>
<div class=3D"h5">
<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">*,
<div><br>
</div>
<div>Thank you to all who attended and contributed to the lively discussion=
 at the WG meeting in Berlin this week. This is what WG meetings should be =
- and some would say, used to be.</div>
<div><br>
</div>
<div>From a poll in the room, there was consensus to pull together a volunt=
eer design team to look at the various encap options, and based on use-case=
/operational considerations/support the team will pick one additional encap=
 to document and offer as a WG item.
 The expectation is the list of volunteers will attend an interim WG meetin=
g were we will work together for 2-3 days to hash out the direction and det=
ails. This will be a physical meeting, but will accommodate remote particip=
ation as well.</div>
<div><br>
</div>
<div>I would like to see this work published and available for further disc=
ussion to the group at large on the list before and in the room during the =
next WG meeting in November. Considering the requirements for interim meeti=
ng announcements, the soonest we
 can reasonably target an interim meeting is Sept.</div>
<div><br>
</div>
<div>Anyone wanting to volunteer as a member of the BIER Encap Design Team,=
 please send email to the WG chairs. We will compile the list, then target =
a suitable location and dates from there. We look forward to pulling this e=
nthusiastic team together in one
 direction.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Greg</div>
<div><br>
</div>
<div><br>
</div>
</div>
</blockquote>
</div>
</div>
</div>
<br>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</blockquote>
<blockquote type=3D"cite">
<div><span>_______________________________________________</span><br>
<span>BIER mailing list</span><br>
<span><a href=3D"mailto:BIER@ietf.org">BIER@ietf.org</a></span><br>
<span><a href=3D"https://www.ietf.org/mailman/listinfo/bier">https://www.ie=
tf.org/mailman/listinfo/bier</a></span><br>
</div>
</blockquote>
</body>
</html>

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From: Olufemi Komolafe <okomolaf@Brocade.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>
Thread-Topic: [Bier] Alternate Encap Design Team - Call for volunteers
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Subject: Re: [Bier] Alternate Encap Design Team - Call for volunteers
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I would like to volunteer.

Regards,
Femi

From: BIER [mailto:bier-bounces@ietf.org] On Behalf Of Rajiv Asati (rajiva)
Sent: Thursday, July 28, 2016 6:41 PM
To: gjshep@gmail.com
Cc: bier@ietf.org
Subject: Re: [Bier] Alternate Encap Design Team - Call for volunteers

I would like to volunteer.

Cheers,
Rajiv


On Jul 28, 2016, at 12:41 PM, Greg Shepherd <gjshep@gmail.com<mailto:gjshep@gmail.com>> wrote:
*,

Let me add, that if you DID NOT send email to this request, you are not on the current list for the Alt Encap Design team. The call for hands in the room was just to gauge interest. The official call is here on the list and you need to respond on the list or you will not be included.

Thanks,
Greg

On Thu, Jul 28, 2016 at 9:32 AM, Greg Shepherd <gjshep@gmail.com<mailto:gjshep@gmail.com>> wrote:
Thank you to the 9 responders so far to the call. I'm going to start a date/location poll for the current list of volunteers. If others are interested in joining, the call is still open. Please send email to the chairs requesting to be added.

Thanks!,
Greg

On Wed, Jul 20, 2016 at 5:17 PM, Greg Shepherd <gjshep@gmail.com<mailto:gjshep@gmail.com>> wrote:
*,

Thank you to all who attended and contributed to the lively discussion at the WG meeting in Berlin this week. This is what WG meetings should be - and some would say, used to be.

>From a poll in the room, there was consensus to pull together a volunteer design team to look at the various encap options, and based on use-case/operational considerations/support the team will pick one additional encap to document and offer as a WG item. The expectation is the list of volunteers will attend an interim WG meeting were we will work together for 2-3 days to hash out the direction and details. This will be a physical meeting, but will accommodate remote participation as well.

I would like to see this work published and available for further discussion to the group at large on the list before and in the room during the next WG meeting in November. Considering the requirements for interim meeting announcements, the soonest we can reasonably target an interim meeting is Sept.

Anyone wanting to volunteer as a member of the BIER Encap Design Team, please send email to the WG chairs. We will compile the list, then target a suitable location and dates from there. We look forward to pulling this enthusiastic team together in one direction.

Thanks,
Greg




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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D">I would like to volunteer.<o:p></o:p>=
</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D">Regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D">Femi<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:11.0pt;font-family:&quot=
;Calibri&quot;,sans-serif">From:</span></b><span style=3D"font-size:11.0pt;=
font-family:&quot;Calibri&quot;,sans-serif"> BIER [mailto:bier-bounces@ietf=
.org]
<b>On Behalf Of </b>Rajiv Asati (rajiva)<br>
<b>Sent:</b> Thursday, July 28, 2016 6:41 PM<br>
<b>To:</b> gjshep@gmail.com<br>
<b>Cc:</b> bier@ietf.org<br>
<b>Subject:</b> Re: [Bier] Alternate Encap Design Team - Call for volunteer=
s<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal">I would like to volunteer.&nbsp;<br>
<br>
Cheers, <o:p></o:p></p>
<div>
<p class=3D"MsoNormal">Rajiv &nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
<div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><br>
On Jul 28, 2016, at 12:41 PM, Greg Shepherd &lt;<a href=3D"mailto:gjshep@gm=
ail.com">gjshep@gmail.com</a>&gt; wrote:<o:p></o:p></p>
</div>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<p class=3D"MsoNormal">*, <o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Let me add, that if you DID NOT send email to this r=
equest, you are not on the current list for the Alt Encap Design team. The =
call for hands in the room was just to gauge interest. The official call is=
 here on the list and you need to
 respond on the list or you will not be included.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks,<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Greg<o:p></o:p></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal">On Thu, Jul 28, 2016 at 9:32 AM, Greg Shepherd &lt;<=
a href=3D"mailto:gjshep@gmail.com" target=3D"_blank">gjshep@gmail.com</a>&g=
t; wrote:<o:p></o:p></p>
<blockquote style=3D"border:none;border-left:solid #CCCCCC 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<p class=3D"MsoNormal">Thank you to the 9 responders so far to the call. I'=
m going to start a date/location poll for the current list of volunteers. I=
f others are interested in joining, the call is still open. Please send ema=
il to the chairs requesting to be
 added. <o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks!,<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Greg<o:p></o:p></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal">On Wed, Jul 20, 2016 at 5:17 PM, Greg Shepherd &lt;<=
a href=3D"mailto:gjshep@gmail.com" target=3D"_blank">gjshep@gmail.com</a>&g=
t; wrote:<o:p></o:p></p>
<div>
<div>
<blockquote style=3D"border:none;border-left:solid #CCCCCC 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<p class=3D"MsoNormal">*, <o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Thank you to all who attended and contributed to the=
 lively discussion at the WG meeting in Berlin this week. This is what WG m=
eetings should be - and some would say, used to be.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">From a poll in the room, there was consensus to pull=
 together a volunteer design team to look at the various encap options, and=
 based on use-case/operational considerations/support the team will pick on=
e additional encap to document and
 offer as a WG item. The expectation is the list of volunteers will attend =
an interim WG meeting were we will work together for 2-3 days to hash out t=
he direction and details. This will be a physical meeting, but will accommo=
date remote participation as well.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">I would like to see this work published and availabl=
e for further discussion to the group at large on the list before and in th=
e room during the next WG meeting in November. Considering the requirements=
 for interim meeting announcements,
 the soonest we can reasonably target an interim meeting is Sept.<o:p></o:p=
></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Anyone wanting to volunteer as a member of the BIER =
Encap Design Team, please send email to the WG chairs. We will compile the =
list, then target a suitable location and dates from there. We look forward=
 to pulling this enthusiastic team
 together in one direction.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks,<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Greg<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</blockquote>
</div>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</blockquote>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</blockquote>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class=3D"MsoNormal">_______________________________________________<br>
BIER mailing list<br>
<a href=3D"mailto:BIER@ietf.org">BIER@ietf.org</a><br>
<a href=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.ietf.=
org_mailman_listinfo_bier&amp;d=3DCwMFAg&amp;c=3DIL_XqQWOjubgfqINi2jTzg&amp=
;r=3DJJQeumfRIljD_Xdmpw2mJTpe2LMPz89BlujcAESMjlM&amp;m=3DxLsC6ocnxA_pJ3IUzK=
bOoqnLH1RAbaOXTqxiIkAutiU&amp;s=3DtHEPBiv8DIE2AgtHbJfORgmk6VWSfeMQ7icsIjaH3=
nA&amp;e=3D">https://www.ietf.org/mailman/listinfo/bier</a><o:p></o:p></p>
</div>
</blockquote>
</div>
</body>
</html>

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From nobody Sun Jul 31 19:12:23 2016
Return-Path: <xuxiaohu@huawei.com>
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From: Xuxiaohu <xuxiaohu@huawei.com>
To: "gjshep@gmail.com" <gjshep@gmail.com>, "bier@ietf.org" <bier@ietf.org>
Thread-Topic: [Bier] Alternate Encap Design Team - Call for volunteers
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Date: Mon, 1 Aug 2016 02:12:09 +0000
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Subject: Re: [Bier] Alternate Encap Design Team - Call for volunteers
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