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To: Michael Richardson <mcr+ietf@sandelman.ca>, Anima WG <anima@ietf.org>
Cc: ibagdona@gmail.com, Zhoutianran <zhoutianran@huawei.com>, "opsawg@ietf.org" <opsawg@ietf.org>
References: <031d87aa-1839-d7af-0723-dd9a2aa7ad0a@cisco.com> <26653.1495506219@obiwan.sandelman.ca>
From: Eliot Lear <lear@cisco.com>
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Subject: Re: [OPSAWG] [Anima] dealing with multiple manufacturer services with a single certificate extension
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From: Eliot Lear <lear@cisco.com>
To: Michael Richardson <mcr+ietf@sandelman.ca>, Anima WG <anima@ietf.org>
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 "opsawg@ietf.org" <opsawg@ietf.org>
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Subject: Re: [Anima] dealing with multiple manufacturer services with a single
 certificate extension
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 <26653.1495506219@obiwan.sandelman.ca>
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Hi Michael,

Below.

On 5/23/17 4:23 AM, Michael Richardson wrote:
> I've read through the thread.  It took more brain-power that I've had
> available of recent.
>
> Let me ask some clarification questions about the original proposal.
>
> I generally agree with Max that the /.well-known/ part can be omitted.
>
> I also prefer passive (static file) initial interactions so that
> the initial contact point can be most easily maintained over a period o=
f
> decades.  I was surprised when some proprietary uses like this would po=
int at
> the www.example.com, rather than something more divorced from marketing=
,
> like a "bootstrap.example.com".
>
> So I rather like the mfg-services reply which is essentially a redirect=

> which can be updated over the years.
>
>
>> https://example.com/.well-known/mfg/modelname
>>
>> which would return something like:
>>
>> {
>>   "mfg-services" : [
>>     "mud", "v1", "https://mud.example.com/Frobmaster3000.json",
>>     "anima", "v1", "https://masa.example.com/masa-service"
>>   ]
>> }
> correct?   In this case, the modelname is there to distinguish phones
> From printers from home-routers, which might well be very separate
> divisions.

That was the idea.  Think a major consumer product manufacturer that has
many different products.  This doesn't require the manufacturer to
create a domain per product.
>
>> At the moment, more manufacturers are coming back to me to say that we=

>> should just leave these as separate and distinct mechanisms. I think t=
hat's
>> the simplest approach.
> Distinct mechanisms, but common certificates?  Or distinct certificates=
?

That is- there is a single manufacturer certificate but distinct
extensions that both contain URIs but might point to different places
(indeed that would be the point).

>
>
>> It seems to me the simplest way to handle this sort of thing is to cre=
ate a
>> table that MUD/ANIMA controllers simply download when they see the URL=
=2E It
>> might look something like this:
> When you say ANIMA controller, I think you mean the JRC?
>
Yes.

Eliot


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From: Tianran Zhou <zhoutianran@huawei.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
CC: "opsawg-chairs@ietf.org" <opsawg-chairs@ietf.org>
Thread-Topic: WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Date: Mon, 5 Jun 2017 01:54:34 +0000
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Subject: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Dear OPSAWG,

In Seoul, we got enough interest and positive response on this service mode=
ls explained draft.
By the authors' request, this email starts a formal poll. The chairs would =
like to know if the WG participants agree that the following document shoul=
d be adopted as a WG document in OPSAWG.

Service Models Explained
https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-explained/

The adoption poll will take two weeks. Please let us know your opinion by J=
une 19. It would also be good to hear who is willing to review this documen=
t.

Since we already found that the majority of the f2f participants at our IET=
F97 session like this idea, please do speak up now if you do not agree or h=
ave serious objections (with explanation of course).

Regards,
Tianran,  OPSAWG Co-Chair


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--_000_HK2PR0601MB13614AD1610E2FA97C21A682FCC80HK2PR0601MB1361_--


From nobody Wed Jun  7 02:39:15 2017
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From: Fioccola Giuseppe <giuseppe.fioccola@telecomitalia.it>
To: Tianran Zhou <zhoutianran@huawei.com>, "opsawg@ietf.org" <opsawg@ietf.org>
CC: "opsawg-chairs@ietf.org" <opsawg-chairs@ietf.org>
Thread-Topic: WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Date: Wed, 7 Jun 2017 09:39:08 +0000
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Subject: [OPSAWG] R: WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Support the adoption. This is an important document and foundation for servi=
ce model specification (e.g. l3sm and l2sm).
Thanks,

Giuseppe

-----Messaggio originale-----
Da: OPSAWG [mailto:opsawg-bounces@ietf.org] Per conto di Tianran Zhou
Inviato: luned=EC 5 giugno 2017 03:55
A: opsawg@ietf.org
Cc: opsawg-chairs@ietf.org
Oggetto: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-explain=
ed-06

Dear OPSAWG,

In Seoul, we got enough interest and positive response on this service model=
s explained draft.
By the authors' request, this email starts a formal poll. The chairs would l=
ike to know if the WG participants agree that the following document should=
 be adopted as a WG document in OPSAWG.

Service Models Explained
https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-explained/

The adoption poll will take two weeks. Please let us know your opinion by Ju=
ne 19. It would also be good to hear who is willing to review this document.

Since we already found that the majority of the f2f participants at our IETF=
97 session like this idea, please do speak up now if you do not agree or hav=
e serious objections (with explanation of course).

Regards,
Tianran,  OPSAWG Co-Chair

_______________________________________________
OPSAWG mailing list
OPSAWG@ietf.org
https://www.ietf.org/mailman/listinfo/opsawg

Questo messaggio e i suoi allegati sono indirizzati esclusivamente alle pers=
one indicate. La diffusione, copia o qualsiasi altra azione derivante dalla=
 conoscenza di queste informazioni sono rigorosamente vietate. Qualora abbia=
te ricevuto questo documento per errore siete cortesemente pregati di darne=
 immediata comunicazione al mittente e di provvedere alla sua distruzione, G=
razie. 

This e-mail and any attachments is confidential and may contain privileged i=
nformation intended for the addressee(s) only. Dissemination, copying, print=
ing or use by anybody else is unauthorised. If you are not the intended reci=
pient, please delete this message and any attachments and advise the sender=
 by return e-mail, Thanks. 

Rispetta l'ambiente. Non stampare questa mail se non =E8 necessario.


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Subject: Re: [OPSAWG] [IPFIX] [Idr] discussion about exporting BGP community information in IPFIX
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What IPFIX message splitting method would you propose? Bear in mind that 
it must be backwards-compatible with existing collectors which do not 
expect message splitting.

Rather than splitting messages, it might be acceptable simply to send 
longer messages. I think this would require a new version of IPFIX (eg, 
version 11) with the following modifications:

* 32-bit Length in the Message Header (cf. RFC 7011 / Figure F)
* 32 bit Field Length in the Field Specifier Format (cf. RFC 7011 / 
Figure G)
* 32 bit Length in the Set Header Format (cf. RFC 7011 / Figure I)

P.


On 07/06/17 10:02, li zhenqiang wrote:
> about question 1， the message length.
> A WG 
> draft,https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-extended-messages/ 
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_draft-2Dietf-2Didr-2Dbgp-2Dextended-2Dmessages_&d=DwMGaQ&c=IL_XqQWOjubgfqINi2jTzg&r=Xx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&m=plGpWzcW7ppWguHBC4w6PyEGZRLkmX7MJ1vUTVNOpZs&s=0pin7tGPbPq5n1iayUcdxrEXuvzvTPplWdQkXERikBo&e=>, 
> extends the maximum update message sizeof BGP beyond 4096 bytes to 65535 bytes. So, 
> one IPFIX message may not be sufficient to fit all the communities 
> related to a specific flow. BGP speakers 
> that support the extended message feature 
> SHOULD takecare to handle the IPFIX message properly, such as only convey as many communities as possible in theIPFIX message. The collector that 
> receives an IPFIX message with maximum length and BGP communities 
> contained in its data set SHOULD be aware of the BGP communities may be truncated due to limited messagespace. In this case, it is RECOMMENDED to configure export policy on the exporter to limit the BGP communitiesto be exported, to export only some specific communities, for example, or not to export some communities.
>
> To solve this problem completely, we should update 
> IPFIX Protocol Specification RFC7011 to supportmessage splitting.
>
> Your comments are appreciated.
>
> ------------------------------------------------------------------------
> li_zhenqiang@hotmail.com

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    What IPFIX message splitting method would you propose? Bear in mind
    that it must be backwards-compatible with existing collectors which
    do not expect message splitting.<br>
    <br>
    Rather than splitting messages, it might be acceptable simply to
    send longer messages. I think this would require a new version of
    IPFIX (eg, version 11) with the following modifications:<br>
    <br>
    * 32-bit Length in the Message Header (cf. RFC 7011 / Figure F)<br>
    * 32 bit Field Length in the Field Specifier Format (cf. RFC 7011 /
    Figure G)<br>
    * 32 bit Length in the Set Header Format (cf. RFC 7011 / Figure I)<br>
    <br>
    P.<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 07/06/17 10:02, li zhenqiang wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:HK2PR0601MB13614AD1610E2FA97C21A682FCC80@HK2PR0601MB1361.apcprd06.prod.outlook.com">
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
      <style>body { line-height: 1.5; }blockquote { margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em; }div.foxdiv20170607164906554296 { }body { font-size: 10.5pt; font-family: 微软雅黑; color: rgb(0, 0, 0); line-height: 1.5; }</style>
      <div><span></span>about question 1， the message length. </div>
      <div><span style="color: rgb(0, 0, 0); background-color: rgba(0,
          0, 0, 0);"></span><span style="color: rgb(0, 0, 0); font-size:
          10.5pt; line-height: 1.5; background-color: rgba(0, 0, 0, 0);">A
          WG draft,</span><span style="font-size: 10.5pt; line-height:
          1.5; background-color: window;">
        </span><a
href="https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_draft-2Dietf-2Didr-2Dbgp-2Dextended-2Dmessages_&amp;d=DwMGaQ&amp;c=IL_XqQWOjubgfqINi2jTzg&amp;r=Xx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&amp;m=plGpWzcW7ppWguHBC4w6PyEGZRLkmX7MJ1vUTVNOpZs&amp;s=0pin7tGPbPq5n1iayUcdxrEXuvzvTPplWdQkXERikBo&amp;e="
          style="font-size: 10.5pt; line-height: 1.5; background-color:
          window;" moz-do-not-send="true">https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-extended-messages/</a>, <span
          style="background-color: rgba(0, 0, 0, 0); font-size: 10.5pt;
          line-height: 1.5;">extends the maximum update message size</span><span
          style="color: rgb(0, 0, 0); font-size: 10.5pt; line-height:
          1.5; background-color: rgba(0, 0, 0, 0);"> </span><span
          style="color: rgb(0, 0, 0); font-size: 10.5pt; line-height:
          1.5; background-color: rgba(0, 0, 0, 0);">of BGP beyond 4096 bytes to 65535 bytes.</span><span
          style="color: rgb(0, 0, 0); font-size: 10.5pt; line-height:
          1.5; background-color: rgba(0, 0, 0, 0);"> So, one IPFIX
          message may not be sufficient to fit all the communities
          related to a specific flow. BGP speakers </span><span
          style="background-color: rgba(0, 0, 0, 0); font-size: 10.5pt;
          line-height: 1.5;">that support the extended message feature
          SHOULD take<span style="white-space: pre;"> </span></span><span
          style="background-color: rgba(0, 0, 0, 0); font-size: 10.5pt;
          line-height: 1.5;">care to handle the IPFIX message properly, such as only convey as many communities as possible in the<span style="white-space: pre;"> </span></span><span
          style="background-color: rgba(0, 0, 0, 0); font-size: 10.5pt;
          line-height: 1.5;">IPFIX message. The collector that
          receives an IPFIX message with maximum length and BGP communities </span><span
          style="background-color: rgba(0, 0, 0, 0); font-size: 10.5pt;
          line-height: 1.5;">contained in its data set SHOULD be aware of the BGP communities may be truncated due to limited message<span style="white-space: pre;"> </span></span><span
          style="background-color: rgba(0, 0, 0, 0); font-size: 10.5pt;
          line-height: 1.5;">space. In this case, it is RECOMMENDED to configure export policy on the exporter to limit the BGP communities<span style="white-space: pre;"> </span></span><span
          style="background-color: rgba(0, 0, 0, 0); font-size: 10.5pt;
          line-height: 1.5;">to be exported, to export only some specific communities, for example, or not to export some communities.</span></div>
      <div><span style="background-color: rgba(0, 0, 0, 0); font-size:
          10.5pt; line-height: 1.5;"><br>
        </span></div>
      <div><span style="color: rgb(0, 0, 0); background-color: rgba(0,
          0, 0, 0);">To solve this problem completely, we should update
          IPFIX Protocol Specification RFC7011 to support<span style="white-space: pre;"> </span>message splitting.</span></div>
      <div><span style="color: rgb(0, 0, 0); background-color: rgba(0,
          0, 0, 0);"><br>
        </span></div>
      <div><span style="color: rgb(0, 0, 0); background-color: rgba(0,
          0, 0, 0);">Your comments are appreciated.</span></div>
      <div><span style="color: rgb(0, 0, 0); background-color: rgba(0,
          0, 0, 0);"><br>
        </span></div>
      <hr style="width: 210px; height: 1px;" color="#b5c4df" size="1"
        align="left">
      <div><span>
          <div style="MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE:
            10pt">
            <div><a class="moz-txt-link-abbreviated" href="mailto:li_zhenqiang@hotmail.com">li_zhenqiang@hotmail.com</a></div>
            <span></span></div>
        </span></div>
    </blockquote>
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--_000_HKXPR02MB05172853D5BFFBBC3555DD758BC80HKXPR02MB0517apcp_
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dgb2312">
<style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi=
n-bottom:0;} --></style>
</head>
<body dir=3D"ltr">
<div id=3D"divtagdefaultwrapper" style=3D"font-size: 12pt; color: rgb(0, 0,=
 0); font-family: Calibri, Arial, Helvetica, sans-serif, EmojiFont, 'Apple =
Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', 'Android=
 Emoji', EmojiSymbols;" dir=3D"ltr">
<p><span style=3D"color: rgb(33, 33, 33); font-family: 'Microsoft YaHei UI'=
, 'Microsoft YaHei', =CE=A2=C8=ED=D1=C5=BA=DA, SimSun, =CB=CE=CC=E5, sans-s=
erif, serif, EmojiFont; font-size: 13.3333px;">This draft makes it easier f=
or us to understand&nbsp;different yang&nbsp;models and their relationship.
 I think it's useful and in time. So&nbsp;I support the adoption.</span></p=
>
<p><br style=3D"color: rgb(33, 33, 33); font-family: 'Microsoft YaHei UI', =
'Microsoft YaHei', =CE=A2=C8=ED=D1=C5=BA=DA, SimSun, =CB=CE=CC=E5, sans-ser=
if, serif, EmojiFont; font-size: 13.3333px;">
<span style=3D"color: rgb(33, 33, 33); font-family: 'Microsoft YaHei UI', '=
Microsoft YaHei', =CE=A2=C8=ED=D1=C5=BA=DA, SimSun, =CB=CE=CC=E5, sans-seri=
f, serif, EmojiFont; font-size: 13.3333px;">Thanks</span><br>
</p>
Gu Rong<br>
<div style=3D"color: rgb(0, 0, 0);">
<div>
<hr tabindex=3D"-1" style=3D"display:inline-block; width:98%">
<div id=3D"x_divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" =
color=3D"#000000" style=3D"font-size:11pt"><b>=B7=A2=BC=FE=C8=CB:</b> OPSAW=
G &lt;opsawg-bounces@ietf.org&gt; =B4=FA=B1=ED Fioccola Giuseppe &lt;giusep=
pe.fioccola@telecomitalia.it&gt;<br>
<b>=B7=A2=CB=CD=CA=B1=BC=E4:</b> 2017=C4=EA6=D4=C27=C8=D5 9:39<br>
<b>=CA=D5=BC=FE=C8=CB:</b> Tianran Zhou; opsawg@ietf.org<br>
<b>=B3=AD=CB=CD:</b> opsawg-chairs@ietf.org<br>
<b>=D6=F7=CC=E2:</b> [OPSAWG] R: WG adoption poll for draft-wu-opsawg-servi=
ce-model-explained-06</font>
<div>&nbsp;</div>
</div>
</div>
<font size=3D"2"><span style=3D"font-size:10pt;">
<div class=3D"PlainText">Support the adoption. This is an important documen=
t and foundation for service model specification (e.g. l3sm and l2sm).<br>
Thanks,<br>
<br>
Giuseppe<br>
<br>
-----Messaggio originale-----<br>
Da: OPSAWG [<a href=3D"mailto:opsawg-bounces@ietf.org">mailto:opsawg-bounce=
s@ietf.org</a>] Per conto di Tianran Zhou<br>
Inviato: luned=A8=AC 5 giugno 2017 03:55<br>
A: opsawg@ietf.org<br>
Cc: opsawg-chairs@ietf.org<br>
Oggetto: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-explai=
ned-06<br>
<br>
Dear OPSAWG,<br>
<br>
In Seoul, we got enough interest and positive response on this service mode=
ls explained draft.<br>
By the authors' request, this email starts a formal poll. The chairs would =
like to know if the WG participants agree that the following document shoul=
d be adopted as a WG document in OPSAWG.<br>
<br>
Service Models Explained<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-e=
xplained/">https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-e=
xplained/</a><br>
<br>
The adoption poll will take two weeks. Please let us know your opinion by J=
une 19. It would also be good to hear who is willing to review this documen=
t.<br>
<br>
Since we already found that the majority of the f2f participants at our IET=
F97 session like this idea, please do speak up now if you do not agree or h=
ave serious objections (with explanation of course).<br>
<br>
Regards,<br>
Tianran,&nbsp; OPSAWG Co-Chair<br>
<br>
_______________________________________________<br>
OPSAWG mailing list<br>
OPSAWG@ietf.org<br>
<a href=3D"https://www.ietf.org/mailman/listinfo/opsawg">https://www.ietf.o=
rg/mailman/listinfo/opsawg</a><br>
<br>
Questo messaggio e i suoi allegati sono indirizzati esclusivamente alle per=
sone indicate. La diffusione, copia o qualsiasi altra azione derivante dall=
a conoscenza di queste informazioni sono rigorosamente vietate. Qualora abb=
iate ricevuto questo documento per
 errore siete cortesemente pregati di darne immediata comunicazione al mitt=
ente e di provvedere alla sua distruzione, Grazie.
<br>
<br>
This e-mail and any attachments is confidential and may contain privileged =
information intended for the addressee(s) only. Dissemination, copying, pri=
nting or use by anybody else is unauthorised. If you are not the intended r=
ecipient, please delete this message
 and any attachments and advise the sender by return e-mail, Thanks. <br>
<br>
Rispetta l'ambiente. Non stampare questa mail se non =A8=A8 necessario.<br>
<br>
_______________________________________________<br>
OPSAWG mailing list<br>
OPSAWG@ietf.org<br>
<a href=3D"https://www.ietf.org/mailman/listinfo/opsawg">https://www.ietf.o=
rg/mailman/listinfo/opsawg</a><br>
</div>
</span></font></div>
</div>
</body>
</html>

--_000_HKXPR02MB05172853D5BFFBBC3555DD758BC80HKXPR02MB0517apcp_--


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From: <mohamed.boucadair@orange.com>
To: Tianran Zhou <zhoutianran@huawei.com>, "Senthil Sivakumar (ssenthil)" <ssenthil@cisco.com>, "opsawg@ietf.org" <opsawg@ietf.org>
CC: Ian Farrer <ianfarrer@gmx.com>
Thread-Topic: Comments on draft-sivakumar-yang-nat-05
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Date: Wed, 7 Jun 2017 11:33:29 +0000
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From: <mohamed.boucadair@orange.com>
To: Tianran Zhou <zhoutianran@huawei.com>, "opsawg@ietf.org" <opsawg@ietf.org>
CC: "opsawg-chairs@ietf.org" <opsawg-chairs@ietf.org>
Thread-Topic: WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Date: Wed, 7 Jun 2017 11:40:07 +0000
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Subject: Re: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Dear chairs, all,

I support.=20

I reviewed an earlier version of the draft; most of my comments were kindly=
 addressed by Adrian. I still have some cosmetic comments on the latest ver=
sion (already sent to Adrian), but those are easy to fix. =20

Cheers,
Med

> -----Message d'origine-----
> De=A0: OPSAWG [mailto:opsawg-bounces@ietf.org] De la part de Tianran Zhou
> Envoy=E9=A0: lundi 5 juin 2017 03:55
> =C0=A0: opsawg@ietf.org
> Cc=A0: opsawg-chairs@ietf.org
> Objet=A0: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-
> explained-06
>=20
> Dear OPSAWG,
>=20
> In Seoul, we got enough interest and positive response on this service
> models explained draft.
> By the authors' request, this email starts a formal poll. The chairs woul=
d
> like to know if the WG participants agree that the following document
> should be adopted as a WG document in OPSAWG.
>=20
> Service Models Explained
> https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-explained/
>=20
> The adoption poll will take two weeks. Please let us know your opinion by
> June 19. It would also be good to hear who is willing to review this
> document.
>=20
> Since we already found that the majority of the f2f participants at our
> IETF97 session like this idea, please do speak up now if you do not agree
> or have serious objections (with explanation of course).
>=20
> Regards,
> Tianran,  OPSAWG Co-Chair
>=20
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg


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From: "Senthil Sivakumar (ssenthil)" <ssenthil@cisco.com>
To: "mohamed.boucadair@orange.com" <mohamed.boucadair@orange.com>, "Tianran Zhou" <zhoutianran@huawei.com>, "opsawg@ietf.org" <opsawg@ietf.org>
CC: Ian Farrer <ianfarrer@gmx.com>
Thread-Topic: Comments on draft-sivakumar-yang-nat-05
Thread-Index: AQHS34HuUVdRKgLOB0iBcDCGJELRFaIZrlSA
Date: Wed, 7 Jun 2017 16:51:21 +0000
Message-ID: <DA997615-FB1F-429D-88EF-A37DA45F550F@cisco.com>
References: <D5D72943-74FC-4758-B1F7-96ABF98ADDA8@cisco.com> <72F12146-27EC-4CA1-9D42-BD367A325801@cisco.com> <BBA82579FD347748BEADC4C445EA0F21A235D3BF@NKGEML515-MBS.china.huawei.com> <787AE7BB302AE849A7480A190F8B933009E53A1B@OPEXCLILMA3.corporate.adroot.infra.ftgroup> <BBA82579FD347748BEADC4C445EA0F21A2382C8C@NKGEML515-MBX.china.huawei.com> <787AE7BB302AE849A7480A190F8B933009E7A740@OPEXCLILMA3.corporate.adroot.infra.ftgroup>
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From: li zhenqiang <li_zhenqiang@hotmail.com>
To: PJ Aitken <pjaitken@brocade.com>, opsawg <opsawg@ietf.org>, idr <idr@ietf.org>, "ipfix@ietf.org" <ipfix@ietf.org>
Thread-Topic: Re: [IPFIX] [Idr] discussion about exporting BGP community information in IPFIX
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Subject: Re: [OPSAWG] [IPFIX] [Idr] discussion about exporting BGP community information in IPFIX
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From: Dhruv Dhody <dhruv.ietf@gmail.com>
Date: Thu, 8 Jun 2017 13:35:09 +0530
Message-ID: <CAB75xn4dM1Kiza9EJaor7ZmO7mtqbhcsgdmdEa_p9B1Gq3zbQA@mail.gmail.com>
To: Tianran Zhou <zhoutianran@huawei.com>
Cc: "opsawg@ietf.org" <opsawg@ietf.org>, "opsawg-chairs@ietf.org" <opsawg-chairs@ietf.org>
Content-Type: multipart/alternative; boundary="94eb2c0ca7c4bca99005516e4fdb"
Archived-At: <https://mailarchive.ietf.org/arch/msg/opsawg/2hfwF9blyTiUD7QQSbB_5Nz5yRg>
Subject: Re: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Support!

Very useful in the yang model work in the ACTN context in TEAS WG.

Regards,
Dhruv

On Mon, Jun 5, 2017 at 7:24 AM, Tianran Zhou <zhoutianran@huawei.com> wrote:

> Dear OPSAWG,
>
> In Seoul, we got enough interest and positive response on this service
> models explained draft.
> By the authors' request, this email starts a formal poll. The chairs would
> like to know if the WG participants agree that the following document
> should be adopted as a WG document in OPSAWG.
>
> Service Models Explained
> https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-explained/
>
> The adoption poll will take two weeks. Please let us know your opinion by
> June 19. It would also be good to hear who is willing to review this
> document.
>
> Since we already found that the majority of the f2f participants at our
> IETF97 session like this idea, please do speak up now if you do not agree
> or have serious objections (with explanation of course).
>
> Regards,
> Tianran,  OPSAWG Co-Chair
>
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg
>

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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-family:trebuche=
t ms,sans-serif;color:#0c343d">Support!=C2=A0</div><div class=3D"gmail_defa=
ult" style=3D"font-family:trebuchet ms,sans-serif;color:#0c343d"><br></div>=
<div class=3D"gmail_default" style=3D"font-family:trebuchet ms,sans-serif;c=
olor:#0c343d">Very useful in the yang model work in the ACTN context in TEA=
S WG.=C2=A0</div><div class=3D"gmail_default" style=3D"font-family:trebuche=
t ms,sans-serif;color:#0c343d"><br></div><div class=3D"gmail_default" style=
=3D"font-family:trebuchet ms,sans-serif;color:#0c343d">Regards,</div><div c=
lass=3D"gmail_default" style=3D"font-family:trebuchet ms,sans-serif;color:#=
0c343d">Dhruv</div></div><div class=3D"gmail_extra"><br><div class=3D"gmail=
_quote">On Mon, Jun 5, 2017 at 7:24 AM, Tianran Zhou <span dir=3D"ltr">&lt;=
<a href=3D"mailto:zhoutianran@huawei.com" target=3D"_blank">zhoutianran@hua=
wei.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">Dear OPSAWG=
,<br>
<br>
In Seoul, we got enough interest and positive response on this service mode=
ls explained draft.<br>
By the authors&#39; request, this email starts a formal poll. The chairs wo=
uld like to know if the WG participants agree that the following document s=
hould be adopted as a WG document in OPSAWG.<br>
<br>
Service Models Explained<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-e=
xplained/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.or=
g/<wbr>doc/draft-wu-opsawg-service-<wbr>model-explained/</a><br>
<br>
The adoption poll will take two weeks. Please let us know your opinion by J=
une 19. It would also be good to hear who is willing to review this documen=
t.<br>
<br>
Since we already found that the majority of the f2f participants at our IET=
F97 session like this idea, please do speak up now if you do not agree or h=
ave serious objections (with explanation of course).<br>
<br>
Regards,<br>
Tianran,=C2=A0 OPSAWG Co-Chair<br>
<br>
______________________________<wbr>_________________<br>
OPSAWG mailing list<br>
<a href=3D"mailto:OPSAWG@ietf.org">OPSAWG@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/opsawg" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/opsawg</a><br=
>
</blockquote></div><br></div>

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To: li zhenqiang <li_zhenqiang@hotmail.com>, PJ Aitken <pjaitken@brocade.com>, opsawg <opsawg@ietf.org>, idr <idr@ietf.org>, "ipfix@ietf.org" <ipfix@ietf.org>
References: <HK2PR0601MB13617E5EA5828A10E5B3D1A6FCF80@HK2PR0601MB1361.apcprd06.prod.outlook.com> <HK2PR0601MB13614AD1610E2FA97C21A682FCC80@HK2PR0601MB1361.apcprd06.prod.outlook.com> <be981ea3-cc15-09a8-e46a-1fa054059c52@brocade.com> <HK2PR0601MB1361B554DA6986285045FE19FCC90@HK2PR0601MB1361.apcprd06.prod.outlook.com>
From: Stewart Bryant <stewart.bryant@gmail.com>
Message-ID: <97e66319-19bf-58f7-8fdc-7a0b62c5caa3@gmail.com>
Date: Thu, 8 Jun 2017 11:45:12 +0100
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Subject: Re: [OPSAWG] [IPFIX] [Idr] discussion about exporting BGP community information in IPFIX
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If you stick with UDP, and there are good reasons to do that, maybe we 
need a fragmentation shim for UDP?

Stewart


On 08/06/2017 04:21, li zhenqiang wrote:
> Hello  Mr. Aitken,
>
> Thank you very much for your suggestion.
> I have no perfect idea now. Extending the length of IPFIX message is a 
> simple method. But do we need to take the transport protocol into 
> account? Although SCTP is mandatory, some IPFIX implementations use 
> TCP or UDP as their transport protocol. SCTP provides message 
> fragmentation and reassembly method, neithor TCP nor UDP. TCP and UDP 
> rely on IP to finish this work. IP fragmented packets may be droped by 
> some nodes in the network due to security rules or to improve the 
> tansport preformance. For the implementations using TCP or UDP as 
> their transport protocol, sometimes they may not receive some 
> fragmented IPFIX messgaes when we extend the message length to 32 
> bits. I think BGP protocol with extended message length as defined in 
> https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-extended-messages/ 
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_draft-2Dietf-2Didr-2Dbgp-2Dextended-2Dmessages_&d=DwMGaQ&c=IL_XqQWOjubgfqINi2jTzg&r=Xx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&m=plGpWzcW7ppWguHBC4w6PyEGZRLkmX7MJ1vUTVNOpZs&s=0pin7tGPbPq5n1iayUcdxrEXuvzvTPplWdQkXERikBo&e=> also 
> has the same issue. I will send a seperate mail in IDR to ask for 
> their opinions.
>
> Best Regards,
>
> ------------------------------------------------------------------------
> li_zhenqiang@hotmail.com
>
>     *From:* PJ Aitken <mailto:pjaitken@brocade.com>
>     *Date:* 2017-06-07 17:53
>     *To:* li zhenqiang <mailto:li_zhenqiang@hotmail.com>; opsawg
>     <mailto:opsawg@ietf.org>; idr <mailto:idr@ietf.org>;
>     ipfix@ietf.org <mailto:ipfix@ietf.org>
>     *Subject:* Re: [IPFIX] [Idr] discussion about exporting BGP
>     community information in IPFIX
>     What IPFIX message splitting method would you propose? Bear in
>     mind that it must be backwards-compatible with existing collectors
>     which do not expect message splitting.
>
>     Rather than splitting messages, it might be acceptable simply to
>     send longer messages. I think this would require a new version of
>     IPFIX (eg, version 11) with the following modifications:
>
>     * 32-bit Length in the Message Header (cf. RFC 7011 / Figure F)
>     * 32 bit Field Length in the Field Specifier Format (cf. RFC 7011
>     / Figure G)
>     * 32 bit Length in the Set Header Format (cf. RFC 7011 / Figure I)
>
>     P.
>
>
>     On 07/06/17 10:02, li zhenqiang wrote:
>>     about question 1， the message length.
>>     A WG
>>     draft,https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-extended-messages/
>>     <https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_draft-2Dietf-2Didr-2Dbgp-2Dextended-2Dmessages_&d=DwMGaQ&c=IL_XqQWOjubgfqINi2jTzg&r=Xx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&m=plGpWzcW7ppWguHBC4w6PyEGZRLkmX7MJ1vUTVNOpZs&s=0pin7tGPbPq5n1iayUcdxrEXuvzvTPplWdQkXERikBo&e=>,
>>     extends the maximum update message sizeof BGP beyond 4096 bytes to 65535 bytes. So,
>>     one IPFIX message may not be sufficient to fit all the
>>     communities related to a specific flow. BGP speakers
>>     that support the extended message feature
>>     SHOULD takecare to handle the IPFIX message properly, such as only convey as many communities as possible in theIPFIX message. The collector that
>>     receives an IPFIX message with maximum length and BGP communities
>>     contained in its data set SHOULD be aware of the BGP communities may be truncated due to limited messagespace. In this case, it is RECOMMENDED to configure export policy on the exporter to limit the BGP communitiesto be exported, to export only some specific communities, for example, or not to export some communities.
>>
>>     To solve this problem completely, we should update
>>     IPFIX Protocol Specification RFC7011 to supportmessage splitting.
>>
>>     Your comments are appreciated.
>>
>>     ------------------------------------------------------------------------
>>     li_zhenqiang@hotmail.com
>
>
>
> _______________________________________________
> IPFIX mailing list
> IPFIX@ietf.org
> https://www.ietf.org/mailman/listinfo/ipfix


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    <p>If you stick with UDP, and there are good reasons to do that,
      maybe we need a fragmentation shim for UDP?<br>
    </p>
    <p>Stewart<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 08/06/2017 04:21, li zhenqiang
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:HK2PR0601MB1361B554DA6986285045FE19FCC90@HK2PR0601MB1361.apcprd06.prod.outlook.com">
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
      <style>body { line-height: 1.5; }blockquote { margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em; }div.foxdiv20170608104116840842 { }body { font-size: 10.5pt; font-family: 微软雅黑; color: rgb(0, 0, 0); line-height: 1.5; }</style>
      <div>Hello  Mr. Aitken,</div>
      <div><br>
      </div>
      <div><span></span>Thank you very much for your suggestion.</div>
      <div>I have no perfect idea now. Extending the length of IPFIX
        message is a simple method. But do we need to take the transport
        protocol into account? Although SCTP is mandatory, some IPFIX
        implementations use TCP or UDP as their transport protocol. SCTP
        provides message fragmentation and reassembly method, neithor
        TCP nor UDP. TCP and UDP rely on IP to finish this work. IP
        fragmented packets may be droped by some nodes in the network
        due to security rules or to improve the tansport preformance.
        For the implementations using TCP or UDP as their transport
        protocol, sometimes they may not receive some fragmented IPFIX
        messgaes when we extend the message length to 32 bits. I think
        BGP protocol with extended message length as defined in <span
          style="font-size: 10.5pt; line-height: 1.5; background-color:
          window;"> </span><a
href="https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_draft-2Dietf-2Didr-2Dbgp-2Dextended-2Dmessages_&amp;d=DwMGaQ&amp;c=IL_XqQWOjubgfqINi2jTzg&amp;r=Xx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&amp;m=plGpWzcW7ppWguHBC4w6PyEGZRLkmX7MJ1vUTVNOpZs&amp;s=0pin7tGPbPq5n1iayUcdxrEXuvzvTPplWdQkXERikBo&amp;e="
          moz-do-not-send="true" style="font-size: 10.5pt; line-height:
          1.5; background-color: window;">https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-extended-messages/</a> also
        has the same issue. I will send a seperate mail in IDR to ask
        for their opinions.</div>
      <div><br>
      </div>
      <div>Best Regards,</div>
      <div><br>
      </div>
      <hr style="width: 210px; height: 1px;" size="1" align="left"
        color="#b5c4df">
      <div><span>
          <div style="MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE:
            10pt">
            <div><a class="moz-txt-link-abbreviated" href="mailto:li_zhenqiang@hotmail.com">li_zhenqiang@hotmail.com</a></div>
          </div>
        </span></div>
      <blockquote style="margin-top: 0px; margin-bottom: 0px;
        margin-left: 0.5em;">
        <div> </div>
        <div style="border:none;border-top:solid #B5C4DF
          1.0pt;padding:3.0pt 0cm 0cm 0cm">
          <div style="PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE:
            12px;FONT-FAMILY:tahoma;COLOR:#000000; BACKGROUND: #efefef;
            PADDING-BOTTOM: 8px; PADDING-TOP: 8px">
            <div><b>From:</b> <a href="mailto:pjaitken@brocade.com"
                moz-do-not-send="true">PJ Aitken</a></div>
            <div><b>Date:</b> 2017-06-07 17:53</div>
            <div><b>To:</b> <a href="mailto:li_zhenqiang@hotmail.com"
                moz-do-not-send="true">li zhenqiang</a>; <a
                href="mailto:opsawg@ietf.org" moz-do-not-send="true">
                opsawg</a>; <a href="mailto:idr@ietf.org"
                moz-do-not-send="true">idr</a>; <a
                href="mailto:ipfix@ietf.org" moz-do-not-send="true">
                ipfix@ietf.org</a></div>
            <div><b>Subject:</b> Re: [IPFIX] [Idr] discussion about
              exporting BGP community information in IPFIX</div>
          </div>
        </div>
        <div>
          <div class="FoxDiv20170608104116840842">What IPFIX message
            splitting method would you propose? Bear in mind that it
            must be backwards-compatible with existing collectors which
            do not expect message splitting.<br>
            <br>
            Rather than splitting messages, it might be acceptable
            simply to send longer messages. I think this would require a
            new version of IPFIX (eg, version 11) with the following
            modifications:<br>
            <br>
            * 32-bit Length in the Message Header (cf. RFC 7011 / Figure
            F)<br>
            * 32 bit Field Length in the Field Specifier Format (cf. RFC
            7011 / Figure G)<br>
            * 32 bit Length in the Set Header Format (cf. RFC 7011 /
            Figure I)<br>
            <br>
            P.<br>
            <br>
            <br>
            <div class="moz-cite-prefix">On 07/06/17 10:02, li zhenqiang
              wrote:<br>
            </div>
            <blockquote type="cite"
cite="mid:HK2PR0601MB13614AD1610E2FA97C21A682FCC80@HK2PR0601MB1361.apcprd06.prod.outlook.com"
              style="margin-top: 0px; margin-bottom: 0px; margin-left:
              0.5em;">
              <div><span></span>about question 1， the message length. </div>
              <div><span style="color: rgb(0, 0, 0); background-color:
                  rgba(0, 0, 0, 0);"></span><span style="color: rgb(0,
                  0, 0); font-size: 10.5pt; line-height: 1.5;
                  background-color: rgba(0, 0, 0, 0);">A WG draft,</span><span
                  style="font-size: 10.5pt; line-height: 1.5;
                  background-color: window;">
                </span><a
href="https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_draft-2Dietf-2Didr-2Dbgp-2Dextended-2Dmessages_&amp;d=DwMGaQ&amp;c=IL_XqQWOjubgfqINi2jTzg&amp;r=Xx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&amp;m=plGpWzcW7ppWguHBC4w6PyEGZRLkmX7MJ1vUTVNOpZs&amp;s=0pin7tGPbPq5n1iayUcdxrEXuvzvTPplWdQkXERikBo&amp;e="
                  style="font-size: 10.5pt; line-height: 1.5;
                  background-color: window;" moz-do-not-send="true">https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-extended-messages/</a>, <span
                  style="background-color: rgba(0, 0, 0, 0); font-size:
                  10.5pt; line-height: 1.5;">extends the maximum update message size</span><span
                  style="color: rgb(0, 0, 0); font-size: 10.5pt;
                  line-height: 1.5; background-color: rgba(0, 0, 0, 0);"> </span><span
                  style="color: rgb(0, 0, 0); font-size: 10.5pt;
                  line-height: 1.5; background-color: rgba(0, 0, 0, 0);">of BGP beyond 4096 bytes to 65535 bytes.</span><span
                  style="color: rgb(0, 0, 0); font-size: 10.5pt;
                  line-height: 1.5; background-color: rgba(0, 0, 0, 0);"> So,
                  one IPFIX message may not be sufficient to fit all the
                  communities related to a specific flow. BGP speakers </span><span
                  style="background-color: rgba(0, 0, 0, 0); font-size:
                  10.5pt; line-height: 1.5;">that support the extended message
                  feature SHOULD take<span style="white-space: pre;"> </span></span><span
                  style="background-color: rgba(0, 0, 0, 0); font-size:
                  10.5pt; line-height: 1.5;">care to handle the IPFIX message properly, such as only convey as many communities as possible in the<span style="white-space: pre;"> </span></span><span
                  style="background-color: rgba(0, 0, 0, 0); font-size:
                  10.5pt; line-height: 1.5;">IPFIX message. The collector that
receives an IPFIX message with maximum length and BGP communities </span><span
                  style="background-color: rgba(0, 0, 0, 0); font-size:
                  10.5pt; line-height: 1.5;">contained in its data set SHOULD be aware of the BGP communities may be truncated due to limited message<span style="white-space: pre;"> </span></span><span
                  style="background-color: rgba(0, 0, 0, 0); font-size:
                  10.5pt; line-height: 1.5;">space. In this case, it is RECOMMENDED to configure export policy on the exporter to limit the BGP communities<span style="white-space: pre;"> </span></span><span
                  style="background-color: rgba(0, 0, 0, 0); font-size:
                  10.5pt; line-height: 1.5;">to be exported, to export only some specific communities, for example, or not to export some communities.</span></div>
              <div><span style="background-color: rgba(0, 0, 0, 0);
                  font-size: 10.5pt; line-height: 1.5;"><br>
                </span></div>
              <div><span style="color: rgb(0, 0, 0); background-color:
                  rgba(0, 0, 0, 0);">To solve this problem completely,
                  we should update IPFIX Protocol Specification RFC7011
                  to support<span style="white-space: pre;"> </span>message splitting.</span></div>
              <div><span style="color: rgb(0, 0, 0); background-color:
                  rgba(0, 0, 0, 0);"><br>
                </span></div>
              <div><span style="color: rgb(0, 0, 0); background-color:
                  rgba(0, 0, 0, 0);">Your comments are appreciated.</span></div>
              <div><span style="color: rgb(0, 0, 0); background-color:
                  rgba(0, 0, 0, 0);"><br>
                </span></div>
              <hr style="width: 210px; height: 1px;" size="1"
                align="left" color="#b5c4df">
              <div><span>
                  <div style="MARGIN: 10px; FONT-FAMILY: verdana;
                    FONT-SIZE: 10pt">
                    <div><a class="moz-txt-link-abbreviated"
                        href="mailto:li_zhenqiang@hotmail.com"
                        moz-do-not-send="true">li_zhenqiang@hotmail.com</a></div>
                    <span></span></div>
                </span></div>
            </blockquote>
          </div>
        </div>
      </blockquote>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
IPFIX mailing list
<a class="moz-txt-link-abbreviated" href="mailto:IPFIX@ietf.org">IPFIX@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/ipfix">https://www.ietf.org/mailman/listinfo/ipfix</a>
</pre>
    </blockquote>
    <br>
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To: "Stewart Bryant" <stewart.bryant@gmail.com>,  "li_zhenqiang@hotmail.com" <li_zhenqiang@hotmail.com>,  "PJ Aitken" <pjaitken@brocade.com>, opsawg <opsawg@ietf.org>,  idr <idr@ietf.org>, "ipfix@ietf.org" <ipfix@ietf.org>
References: <HK2PR0601MB13617E5EA5828A10E5B3D1A6FCF80@HK2PR0601MB1361.apcprd06.prod.outlook.com>, <HK2PR0601MB13614AD1610E2FA97C21A682FCC80@HK2PR0601MB1361.apcprd06.prod.outlook.com>, <be981ea3-cc15-09a8-e46a-1fa054059c52@brocade.com>,  <HK2PR0601MB1361B554DA6986285045FE19FCC90@HK2PR0601MB1361.apcprd06.prod.outlook.com>, <97e66319-19bf-58f7-8fdc-7a0b62c5caa3@gmail.com>
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charse=
t=3DUTF-8"><style>body { line-height: 1.5; }blockquote { margin-top: 0px; =
margin-bottom: 0px; margin-left: 0.5em; }p { margin-top: 0px; margin-botto=
m: 0px; }div.foxdiv20170609111412593562 { }body { font-size: 10.5pt; font-=
family: =E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=91; color: rgb(0, 0, 0); line-he=
ight: 1.5; }</style></head><body>=0A    =0A  =0A<div><span></span>Thank yo=
u, Mr. Bryant and Mr. Aitken.</div><div><br></div><div>SCTP is mandatory f=
or IPFIX, TCP and UDP are optional.&nbsp;</div><div>SCTP is ok for large I=
PFIX message because SCTP <span style=3D"font-size: 10.5pt; line-height: 1=
.5; background-color: window;">provides message fragmentation and reassemb=
ly method.&nbsp;</span></div><div><span style=3D"font-size: 10.5pt; line-h=
eight: 1.5; background-color: window;"><br></span></div><div><span style=
=3D"font-size: 10.5pt; line-height: 1.5; background-color: window;">Accord=
ing to the discussion in the IDR mail list, TCP is also ok for large IPFIX=
 message. When TCP gets the large message from IPFIX, it cuts the message =
into segments according to the MTU or MSS of the exporter.&nbsp;</span><sp=
an style=3D"font-size: 10.5pt; line-height: 1.5; background-color: window;=
">TCP itself can not guarentee the segments it emits to the IP small enoug=
h to avoid fragmentation, because the MSS or MTU determined by the exporte=
r and collector may be bigger than the MTU in the middle path. Path MTU is=
 not a reliable way neither because&nbsp;</span><span style=3D"font-size: =
10.5pt; line-height: 1.5; background-color: window;">the&nbsp;ICMP&nbsp;me=
ssages&nbsp;necessary&nbsp;for&nbsp;path&nbsp;MTU&nbsp;detection may be bl=
ocked by some nodes in the path</span><span style=3D"font-size: 10.5pt; li=
ne-height: 1.5; background-color: window;">.&nbsp;So when f</span><span st=
yle=3D"font-size: 10.5pt; font-family: =E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=
=91, Tahoma; line-height: normal; background-color: window;">ragmentation =
happens occasionally in practice,</span><span style=3D"font-size: 10.5pt; =
line-height: 1.5; background-color: window;">&nbsp;the operator has to do =
something to solve this, such as by configuring the MTU or MSS on the&nbsp=
;exporter small enough to avoid IP fragmentation.</span></div>=0A<div><br>=
</div><div>If UDP is used by IPFIX as transport protocol, which means in t=
his case the IPFIX is&nbsp;<span style=3D"background-color: rgba(0, 0, 0, =
0); font-size: 10.5pt; line-height: 1.5;">transaction&nbsp;oriented,&nbsp;=
it doesn't care about delivery&nbsp;and&nbsp;duplicate&nbsp;protection</sp=
an><span style=3D"background-color: rgba(0, 0, 0, 0); font-size: 10.5pt; l=
ine-height: 1.5;">. So, I think in this case we don't need to provide any =
fragmentation and reassembly method for IPFIX.&nbsp;</span></div><div><br>=
</div><div>Best Regards,</div><hr style=3D"width: 210px; height: 1px;" col=
or=3D"#b5c4df" size=3D"1" align=3D"left">=0A<div><span><div style=3D"MARGI=
N: 10px; FONT-FAMILY: verdana; FONT-SIZE: 10pt"><div>lizhenqiang@chinamobi=
le.com</div></div></span></div>=0A<blockquote style=3D"margin-top: 0px; ma=
rgin-bottom: 0px; margin-left: 0.5em;"><div>&nbsp;</div><div style=3D"bord=
er:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><div sty=
le=3D"PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE: 12px;FONT-FAMILY:t=
ahoma;COLOR:#000000; BACKGROUND: #efefef; PADDING-BOTTOM: 8px; PADDING-TOP=
: 8px"><div><b>From:</b>&nbsp;<a href=3D"mailto:stewart.bryant@gmail.com">=
Stewart Bryant</a></div><div><b>Date:</b>&nbsp;2017-06-08&nbsp;18:45</div>=
<div><b>To:</b>&nbsp;<a href=3D"mailto:li_zhenqiang@hotmail.com">li zhenqi=
ang</a>; <a href=3D"mailto:pjaitken@brocade.com">PJ Aitken</a>; <a href=3D=
"mailto:opsawg@ietf.org">opsawg</a>; <a href=3D"mailto:idr@ietf.org">idr</=
a>; <a href=3D"mailto:ipfix@ietf.org">ipfix@ietf.org</a></div><div><b>Subj=
ect:</b>&nbsp;Re: [IPFIX] [Idr] discussion about exporting BGP community i=
nformation in IPFIX</div></div></div><div><div class=3D"FoxDiv201706091114=
12593562">=0A  =0A    =0A  =0A  =0A    <p>If you stick with UDP, and there=
 are good reasons to do that,=0A      maybe we need a fragmentation shim f=
or UDP?<br>=0A    </p>=0A    <p>Stewart<br>=0A    </p>=0A    <br>=0A    <d=
iv class=3D"moz-cite-prefix">On 08/06/2017 04:21, li zhenqiang=0A      wro=
te:<br>=0A    </div>=0A    <blockquote type=3D"cite" cite=3D"mid:HK2PR0601=
MB1361B554DA6986285045FE19FCC90@HK2PR0601MB1361.apcprd06.prod.outlook.com"=
 style=3D"margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em;">=0A   =
   =0A      =0A      <div>Hello &nbsp;Mr. Aitken,</div>=0A      <div><br>=
=0A      </div>=0A      <div><span></span>Thank you very much for your sug=
gestion.</div>=0A      <div>I have no perfect idea now. Extending the leng=
th of IPFIX=0A        message is a simple method. But do we need to take t=
he transport=0A        protocol into account? Although SCTP is mandatory, =
some IPFIX=0A        implementations use TCP or UDP as their transport pro=
tocol. SCTP=0A        provides message fragmentation and reassembly method=
, neithor=0A        TCP nor UDP. TCP and UDP rely on IP to finish this wor=
k. IP=0A        fragmented packets may be droped by some nodes in the netw=
ork=0A        due to security rules or to improve the tansport preformance=
.=0A        For the implementations using TCP or UDP as their transport=0A=
        protocol, sometimes they may not receive some fragmented IPFIX=0A =
       messgaes when we extend the message length to 32 bits. I think=0A  =
      BGP protocol with extended message length as defined in&nbsp;<span s=
tyle=3D"font-size: 10.5pt; line-height: 1.5; background-color:=0A         =
 window;">&nbsp;</span><a href=3D"https://urldefense.proofpoint.com/v2/url=
?u=3Dhttps-3A__datatracker.ietf.org_doc_draft-2Dietf-2Didr-2Dbgp-2Dextende=
d-2Dmessages_&amp;d=3DDwMGaQ&amp;c=3DIL_XqQWOjubgfqINi2jTzg&amp;r=3DXx9729=
xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&amp;m=3DplGpWzcW7ppWguHBC4w6PyEGZRLk=
mX7MJ1vUTVNOpZs&amp;s=3D0pin7tGPbPq5n1iayUcdxrEXuvzvTPplWdQkXERikBo&amp;e=
=3D" moz-do-not-send=3D"true" style=3D"font-size: 10.5pt; line-height:=0A =
         1.5; background-color: window;">https://datatracker.ietf.org/doc/=
draft-ietf-idr-bgp-extended-messages/</a>&nbsp;also=0A        has the same=
 issue. I will send a seperate mail in IDR to ask=0A        for their opin=
ions.</div>=0A      <div><br>=0A      </div>=0A      <div>Best Regards,</d=
iv>=0A      <div><br>=0A      </div>=0A      <hr style=3D"width: 210px; he=
ight: 1px;" size=3D"1" align=3D"left" color=3D"#b5c4df">=0A      <div><spa=
n>=0A          <div style=3D"MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE=
:=0A            10pt">=0A            <div><a class=3D"moz-txt-link-abbrevi=
ated" href=3D"mailto:li_zhenqiang@hotmail.com">li_zhenqiang@hotmail.com</a=
></div>=0A          </div>=0A        </span></div>=0A      <blockquote sty=
le=3D"margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em;">=0A       =
 <div>&nbsp;</div>=0A        <div style=3D"border:none;border-top:solid #B=
5C4DF=0A          1.0pt;padding:3.0pt 0cm 0cm 0cm">=0A          <div style=
=3D"PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE:=0A            12px;F=
ONT-FAMILY:tahoma;COLOR:#000000; BACKGROUND: #efefef;=0A            PADDIN=
G-BOTTOM: 8px; PADDING-TOP: 8px">=0A            <div><b>From:</b>&nbsp;<a =
href=3D"mailto:pjaitken@brocade.com" moz-do-not-send=3D"true">PJ Aitken</a=
></div>=0A            <div><b>Date:</b>&nbsp;2017-06-07&nbsp;17:53</div>=
=0A            <div><b>To:</b>&nbsp;<a href=3D"mailto:li_zhenqiang@hotmail=
.com" moz-do-not-send=3D"true">li zhenqiang</a>; <a href=3D"mailto:opsawg@=
ietf.org" moz-do-not-send=3D"true">=0A                opsawg</a>; <a href=
=3D"mailto:idr@ietf.org" moz-do-not-send=3D"true">idr</a>; <a href=3D"mail=
to:ipfix@ietf.org" moz-do-not-send=3D"true">=0A                ipfix@ietf.=
org</a></div>=0A            <div><b>Subject:</b>&nbsp;Re: [IPFIX] [Idr] di=
scussion about=0A              exporting BGP community information in IPFI=
X</div>=0A          </div>=0A        </div>=0A        <div>=0A          <d=
iv class=3D"FoxDiv20170608104116840842">What IPFIX message=0A            s=
plitting method would you propose? Bear in mind that it=0A            must=
 be backwards-compatible with existing collectors which=0A            do n=
ot expect message splitting.<br>=0A            <br>=0A            Rather t=
han splitting messages, it might be acceptable=0A            simply to sen=
d longer messages. I think this would require a=0A            new version =
of IPFIX (eg, version 11) with the following=0A            modifications:<=
br>=0A            <br>=0A            * 32-bit Length in the Message Header=
 (cf. RFC 7011 / Figure=0A            F)<br>=0A            * 32 bit Field =
Length in the Field Specifier Format (cf. RFC=0A            7011 / Figure =
G)<br>=0A            * 32 bit Length in the Set Header Format (cf. RFC 701=
1 /=0A            Figure I)<br>=0A            <br>=0A            P.<br>=0A=
            <br>=0A            <br>=0A            <div class=3D"moz-cite-p=
refix">On 07/06/17 10:02, li zhenqiang=0A              wrote:<br>=0A      =
      </div>=0A            <blockquote type=3D"cite" cite=3D"mid:HK2PR0601=
MB13614AD1610E2FA97C21A682FCC80@HK2PR0601MB1361.apcprd06.prod.outlook.com"=
 style=3D"margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em;">=0A   =
           <div><span></span>about question 1=EF=BC=8C the message length.=
&nbsp;</div>=0A              <div><span style=3D"color: rgb(0, 0, 0); back=
ground-color:=0A                  rgba(0, 0, 0, 0);"></span><span style=3D=
"color: rgb(0,=0A                  0, 0); font-size: 10.5pt; line-height: =
1.5;=0A                  background-color: rgba(0, 0, 0, 0);">A WG draft,<=
/span><span style=3D"font-size: 10.5pt; line-height: 1.5;=0A              =
    background-color: window;">=0A                </span><a href=3D"https:=
//urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__datatracker.ietf.org_doc_=
draft-2Dietf-2Didr-2Dbgp-2Dextended-2Dmessages_&amp;d=3DDwMGaQ&amp;c=3DIL_=
XqQWOjubgfqINi2jTzg&amp;r=3DXx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&am=
p;m=3DplGpWzcW7ppWguHBC4w6PyEGZRLkmX7MJ1vUTVNOpZs&amp;s=3D0pin7tGPbPq5n1ia=
yUcdxrEXuvzvTPplWdQkXERikBo&amp;e=3D" style=3D"font-size: 10.5pt; line-hei=
ght: 1.5;=0A                  background-color: window;" moz-do-not-send=
=3D"true">https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-extended-mes=
sages/</a>,&nbsp;<span style=3D"background-color: rgba(0, 0, 0, 0); font-s=
ize:=0A                  10.5pt; line-height: 1.5;">extends&nbsp;the&nbsp;=
maximum&nbsp;update&nbsp;message&nbsp;size</span><span style=3D"color: rgb=
(0, 0, 0); font-size: 10.5pt;=0A                  line-height: 1.5; backgr=
ound-color: rgba(0, 0, 0, 0);">&nbsp;</span><span style=3D"color: rgb(0, 0=
, 0); font-size: 10.5pt;=0A                  line-height: 1.5; background-=
color: rgba(0, 0, 0, 0);">of&nbsp;BGP&nbsp;beyond&nbsp;4096&nbsp;bytes&nbs=
p;to&nbsp;65535&nbsp;bytes.</span><span style=3D"color: rgb(0, 0, 0); font=
-size: 10.5pt;=0A                  line-height: 1.5; background-color: rgb=
a(0, 0, 0, 0);">&nbsp;So,=0A                  one IPFIX message may not be=
 sufficient to fit all the=0A                  communities related to a sp=
ecific flow. BGP speakers&nbsp;</span><span style=3D"background-color: rgb=
a(0, 0, 0, 0); font-size:=0A                  10.5pt; line-height: 1.5;">t=
hat&nbsp;support&nbsp;the&nbsp;extended&nbsp;message=0A                  f=
eature SHOULD&nbsp;take<span style=3D"white-space: pre;">&nbsp;</span></sp=
an><span style=3D"background-color: rgba(0, 0, 0, 0); font-size:=0A       =
           10.5pt; line-height: 1.5;">care&nbsp;to&nbsp;handle&nbsp;the&nb=
sp;IPFIX&nbsp;message&nbsp;properly,&nbsp;such&nbsp;as&nbsp;only&nbsp;conv=
ey&nbsp;as&nbsp;many&nbsp;communities&nbsp;as&nbsp;possible&nbsp;in&nbsp;t=
he<span style=3D"white-space: pre;">&nbsp;</span></span><span style=3D"bac=
kground-color: rgba(0, 0, 0, 0); font-size:=0A                  10.5pt; li=
ne-height: 1.5;">IPFIX&nbsp;message.&nbsp;The&nbsp;collector&nbsp;that=0Ar=
eceives&nbsp;an&nbsp;IPFIX&nbsp;message&nbsp;with&nbsp;maximum&nbsp;length=
&nbsp;and&nbsp;BGP&nbsp;communities&nbsp;</span><span style=3D"background-=
color: rgba(0, 0, 0, 0); font-size:=0A                  10.5pt; line-heigh=
t: 1.5;">contained&nbsp;in&nbsp;its&nbsp;data&nbsp;set&nbsp;SHOULD&nbsp;be=
&nbsp;aware&nbsp;of&nbsp;the&nbsp;BGP&nbsp;communities&nbsp;may&nbsp;be&nb=
sp;truncated&nbsp;due&nbsp;to&nbsp;limited&nbsp;message<span style=3D"whit=
e-space: pre;">&nbsp;</span></span><span style=3D"background-color: rgba(0=
, 0, 0, 0); font-size:=0A                  10.5pt; line-height: 1.5;">spac=
e.&nbsp;In&nbsp;this&nbsp;case,&nbsp;it&nbsp;is&nbsp;RECOMMENDED&nbsp;to&n=
bsp;configure&nbsp;export&nbsp;policy&nbsp;on&nbsp;the&nbsp;exporter&nbsp;=
to&nbsp;limit&nbsp;the&nbsp;BGP&nbsp;communities<span style=3D"white-space=
: pre;">&nbsp;</span></span><span style=3D"background-color: rgba(0, 0, 0,=
 0); font-size:=0A                  10.5pt; line-height: 1.5;">to&nbsp;be&=
nbsp;exported,&nbsp;to&nbsp;export&nbsp;only&nbsp;some&nbsp;specific&nbsp;=
communities,&nbsp;for&nbsp;example,&nbsp;or&nbsp;not&nbsp;to&nbsp;export&n=
bsp;some&nbsp;communities.</span></div>=0A              <div><span style=
=3D"background-color: rgba(0, 0, 0, 0);=0A                  font-size: 10.=
5pt; line-height: 1.5;"><br>=0A                </span></div>=0A           =
   <div><span style=3D"color: rgb(0, 0, 0); background-color:=0A          =
        rgba(0, 0, 0, 0);">To&nbsp;solve&nbsp;this&nbsp;problem&nbsp;compl=
etely,=0A                  we should update IPFIX&nbsp;Protocol&nbsp;Speci=
fication RFC7011=0A                  to&nbsp;support<span style=3D"white-s=
pace: pre;">&nbsp;</span>message&nbsp;splitting.</span></div>=0A          =
    <div><span style=3D"color: rgb(0, 0, 0); background-color:=0A         =
         rgba(0, 0, 0, 0);"><br>=0A                </span></div>=0A       =
       <div><span style=3D"color: rgb(0, 0, 0); background-color:=0A      =
            rgba(0, 0, 0, 0);">Your comments are appreciated.</span></div>=
=0A              <div><span style=3D"color: rgb(0, 0, 0); background-color=
:=0A                  rgba(0, 0, 0, 0);"><br>=0A                </span></d=
iv>=0A              <hr style=3D"width: 210px; height: 1px;" size=3D"1" al=
ign=3D"left" color=3D"#b5c4df">=0A              <div><span>=0A            =
      <div style=3D"MARGIN: 10px; FONT-FAMILY: verdana;=0A                =
    FONT-SIZE: 10pt">=0A                    <div><a class=3D"moz-txt-link-=
abbreviated" href=3D"mailto:li_zhenqiang@hotmail.com" moz-do-not-send=3D"t=
rue">li_zhenqiang@hotmail.com</a></div>=0A                    <span></span=
></div>=0A                </span></div>=0A            </blockquote>=0A    =
      </div>=0A        </div>=0A      </blockquote>=0A      <br>=0A      <=
fieldset class=3D"mimeAttachmentHeader"></fieldset>=0A      <br>=0A      <=
pre wrap=3D"">_______________________________________________=0AIPFIX mail=
ing list=0A<a class=3D"moz-txt-link-abbreviated" href=3D"mailto:IPFIX@ietf=
.org">IPFIX@ietf.org</a>=0A<a class=3D"moz-txt-link-freetext" href=3D"http=
s://www.ietf.org/mailman/listinfo/ipfix">https://www.ietf.org/mailman/list=
info/ipfix</a>=0A</pre>=0A    </blockquote>=0A    <br>=0A  =0A</div></div>=
</blockquote>=0A</body></html>
------=_001_NextPart733102238288_=------




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To: Tianran Zhou <zhoutianran@huawei.com>, "opsawg@ietf.org" <opsawg@ietf.org>
Cc: "opsawg-chairs@ietf.org" <opsawg-chairs@ietf.org>
References: <BBA82579FD347748BEADC4C445EA0F21A238A55D@NKGEML515-MBX.china.huawei.com>
From: Joe Clarke <jclarke@cisco.com>
Organization: Cisco
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Date: Fri, 9 Jun 2017 09:59:49 -0400
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Archived-At: <https://mailarchive.ietf.org/arch/msg/opsawg/XXQLlgkQDeCqGmJ9Uc5d1zsLonI>
Subject: Re: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-explained-06
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On 6/4/17 21:54, Tianran Zhou wrote:
> Dear OPSAWG,
> 
> In Seoul, we got enough interest and positive response on this service models explained draft.
> By the authors' request, this email starts a formal poll. The chairs would like to know if the WG participants agree that the following document should be adopted as a WG document in OPSAWG.
> 
> Service Models Explained
> https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-explained/
> 
> The adoption poll will take two weeks. Please let us know your opinion by June 19. It would also be good to hear who is willing to review this document.
> 
> Since we already found that the majority of the f2f participants at our IETF97 session like this idea, please do speak up now if you do not agree or have serious objections (with explanation of course).
> 
> Regards,
> Tianran,  OPSAWG Co-Chair
> 

Writing as an individual contributor, I have read this draft, and I
support adoption.

My main comment (which I made to Adrian in a chairs-only thread, and I
will raise here publicly) is around the text in Section 6.1, which made
me think there was intent to modify
I-D.ietf-netmod-yang-model-classification based on ratification of
draft-wu-opsawg-service-model-explained-06.

Specifically:

Figure 1 of [I-D.ietf-netmod-yang-model-classification] can be
   modified to make this more clear and to add an additional example of
   a Network Service YANG model as shown in Figure 4.

Adrian said that the netmod authors do not wish to modify the draft, and
the SM draft should serve to further refine or extend the definitions
therein.  If others have the same thought, perhaps new text could be
chosen to clarify.

Joe


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t=3DGB2312"><style>body { line-height: 1.5; }body { font-size: 10.5pt; fon=
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style></head><body>=0A<div><span></span>hi=A3=AC</div><div>&nbsp; &nbsp; &=
nbsp; I support this draft to be adopted=A3=ACthanks</div><div><br></div><=
div>Chongfeng</div>=0A<div><br></div><div>~~~~~~~~~~~~~~~~~~=A1=A4</div><d=
iv><div style=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-height: n=
ormal;">=B7=A2=BC=FE=C8=CB: OPSAWG [mailto:opsawg-bounces@ietf.org] =B4=FA=
=B1=ED Tianran Zhou</div><div style=3D"font-family: 'Microsoft YaHei UI', =
Tahoma; line-height: normal;">=B7=A2=CB=CD=CA=B1=BC=E4: 2017=C4=EA6=D4=C25=
=C8=D5 9:55</div><div style=3D"font-family: 'Microsoft YaHei UI', Tahoma; =
line-height: normal;">=CA=D5=BC=FE=C8=CB: opsawg@ietf.org</div><div style=
=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-height: normal;">=B3=
=AD=CB=CD: opsawg-chairs@ietf.org</div><div style=3D"font-family: 'Microso=
ft YaHei UI', Tahoma; line-height: normal;">=D6=F7=CC=E2: [OPSAWG] WG adop=
tion poll for draft-wu-opsawg-service-model-explained-06</div><div style=
=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-height: normal;">&nbsp=
;</div><div style=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-heigh=
t: normal;">Dear OPSAWG,</div><div style=3D"font-family: 'Microsoft YaHei =
UI', Tahoma; line-height: normal;">&nbsp;</div><div style=3D"font-family: =
'Microsoft YaHei UI', Tahoma; line-height: normal;">In Seoul, we got enoug=
h interest and positive response on this service models explained draft.</=
div><div style=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-height: =
normal;">By the authors' request, this email starts a formal poll. The cha=
irs would like to know if the WG participants agree that the following doc=
ument should be adopted as a WG document in OPSAWG.</div><div style=3D"fon=
t-family: 'Microsoft YaHei UI', Tahoma; line-height: normal;">&nbsp;</div>=
<div style=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-height: norm=
al;">Service Models Explained</div><div style=3D"font-family: 'Microsoft Y=
aHei UI', Tahoma; line-height: normal;"><a href=3D"https://datatracker.iet=
f.org/doc/draft-wu-opsawg-service-model-explained/" style=3D"text-decorati=
on: none !important;">https://datatracker.ietf.org/doc/draft-wu-opsawg-ser=
vice-model-explained/</a></div><div style=3D"font-family: 'Microsoft YaHei=
 UI', Tahoma; line-height: normal;">&nbsp;</div><div style=3D"font-family:=
 'Microsoft YaHei UI', Tahoma; line-height: normal;">The adoption poll wil=
l take two weeks. Please let us know your opinion by June 19. It would als=
o be good to hear who is willing to review this document.</div><div style=
=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-height: normal;">&nbsp=
;</div><div style=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-heigh=
t: normal;">Since we already found that the majority of the f2f participan=
ts at our IETF97 session like this idea, please do speak up now if you do =
not agree or have serious objections (with explanation of course).</div><d=
iv style=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-height: normal=
;">&nbsp;</div><div style=3D"font-family: 'Microsoft YaHei UI', Tahoma; li=
ne-height: normal;">Regards,</div><div style=3D"font-family: 'Microsoft Ya=
Hei UI', Tahoma; line-height: normal;">Tianran,&nbsp; OPSAWG Co-Chair</div=
><div style=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-height: nor=
mal;">&nbsp;</div><div style=3D"font-family: 'Microsoft YaHei UI', Tahoma;=
 line-height: normal;">_______________________________________________</di=
v><div style=3D"font-family: 'Microsoft YaHei UI', Tahoma; line-height: no=
rmal;">OPSAWG mailing list</div><div style=3D"font-family: 'Microsoft YaHe=
i UI', Tahoma; line-height: normal;">OPSAWG@ietf.org</div><div style=3D"fo=
nt-family: 'Microsoft YaHei UI', Tahoma; line-height: normal;"><a href=3D"=
https://www.ietf.org/mailman/listinfo/opsawg" style=3D"text-decoration: no=
ne !important;">https://www.ietf.org/mailman/listinfo/opsawg</a></div></di=
v><hr style=3D"width: 210px; height: 1px;" color=3D"#b5c4df" size=3D"1" al=
ign=3D"left">=0A<div><span><div style=3D"MARGIN: 10px; FONT-FAMILY: verdan=
a; FONT-SIZE: 10pt"><div>xiechf.bri@chinatelecom.cn</div></div></span></di=
v>=0A</body></html>
------=_001_NextPart332505587551_=------


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From: LUIS MIGUEL CONTRERAS MURILLO <luismiguel.contrerasmurillo@telefonica.com>
To: Tianran Zhou <zhoutianran@huawei.com>, "opsawg@ietf.org" <opsawg@ietf.org>
CC: "opsawg-chairs@ietf.org" <opsawg-chairs@ietf.org>
Thread-Topic: WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Date: Thu, 15 Jun 2017 13:26:43 +0000
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Subject: Re: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-explained-06
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From nobody Fri Jun 16 07:19:39 2017
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Subject: Re: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Of course, I support the WG working on this :-)

The offer of a review from Luis is gratefully accepted. That will make for a
nice first revision inside the WG.

Joe. Yes, I'd be interested to hear what other's think about your point, and to
add text to clarify the issue.

Cheers,
Adrian

> -----Original Message-----
> From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of Tianran Zhou
> Sent: 05 June 2017 02:55
> To: opsawg@ietf.org
> Cc: opsawg-chairs@ietf.org
> Subject: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-
> explained-06
> 
> Dear OPSAWG,
> 
> In Seoul, we got enough interest and positive response on this service models
> explained draft.
> By the authors' request, this email starts a formal poll. The chairs would
like to
> know if the WG participants agree that the following document should be
> adopted as a WG document in OPSAWG.
> 
> Service Models Explained
> https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-explained/
> 
> The adoption poll will take two weeks. Please let us know your opinion by June
> 19. It would also be good to hear who is willing to review this document.
> 
> Since we already found that the majority of the f2f participants at our IETF97
> session like this idea, please do speak up now if you do not agree or have
serious
> objections (with explanation of course).
> 
> Regards,
> Tianran,  OPSAWG Co-Chair
> 
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg


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From: Bob Briscoe <ietf@bobbriscoe.net>
To: Joe Clarke <jclarke@cisco.com>, "Black, David" <david.black@emc.com>, "opsawg-chairs@ietf.org" <opsawg-chairs@ietf.org>, opsawg@ietf.org, draft-ietf-opsawg-capwap-alt-tunnel@ietf.org, "Black, David" <David.Black@dell.com>
Cc: Margaret Cullen <mrcullen42@gmail.com>, Mahalingam Mani <mmani@avaya.com>, Dorothy Gellert <dorothy.gellert@gmail.com>, Michael Montemurro <mmontemurro@rim.com>, Dorothy Stanley <dstanley@arubanetworks.com>
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Subject: Re: [OPSAWG] Update to RFC5415 (ex draft-ietf-capwap-protocol-specification)?
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Joe and other opsawg-chairs
Authors of draft-ietf-opsawg-capwap-alt-tunnel
Chairs of CAPWAP ex-WG
Authors of original CAPWAP spec [RFC5415]

As promised, I have posted a new rev of 
draft-ietf-tsvwg-rfc6040update-shim-02
Pls review/comment.
I am not on the opsawg list, so pls include my email explicitly.

It is planned to WGLC in tsvwg by Sep 2017.
Pls tell the doc Shepherd (David Black, in cc) if you still want it 
WGLC'd in opsawg too.

Having written it, I discovered it actually doesn't need to update the 
CAPWAP spec. Even though the way negotiation of ECN modes work has 
changed [RFC6040], it's written in a way that's backward compatible with 
negotiation of the old ECN [RFC3168] that CAPWAP referred to. So I ended 
up deleting all the text I wrote about it, and just referring to RFC6040.

Nonetheless, for draft-ietf-opsawg-capwap-alt-tunnel you will want to 
know that this updates L2TP and GRE.
If you still want me to give a 5min heads-up in opsawg in Prague, just say.

Cheers


Bob



On 15/06/17 13:42, Bob Briscoe wrote:
> Joe,
>
> Thanks, and thanks to everyone on the trail to reach you.
>
> I hope to complete the new rev of the draft today, so I'll email a 
> notification to the authors you suggest and the opsawg list.
>
> Yes, pls consider this for a 5min heads-up slot in opsawg in Prague.
> Title: Propagating ECN Across IP Tunnel Headers Separated by a Shim
> Draft: draft-ietf-tsvwg-rfc6040update-shim
> Duration: 5 mins
> Presenter: Bob Briscoe
>
>
> The co-authors of capwap-alt-tunnel will definitely be a group that 
> will be interested - thanks for that. I guess less so for RFC7494, but 
> at least these are people recently interested in CAPWAP.
>
>
>
>
> Bob
>
> On 14/06/17 15:02, Joe Clarke wrote:
>> On 6/14/17 08:04, Benoit Claise wrote:
>>> Bob, Margaret,
>>>
>>> Thanks for checking.
>>> The latest CAPWAP work was done in OPSAWG.
>>> See RFC7494 and
>>> https://datatracker.ietf.org/doc/draft-ietf-opsawg-capwap-alt-tunnel/
>>>
>>> So it makes sense to LC the draft in OPSAWG, next to TSVWG.
>>> At the minimum, you want to get feedback from the authors of those two
>>> documents
>>> The OPSAWG chairs are copied.
>>> Presenting in OPSAWG is also an option IMO.
>> I agree with Benoit that doing an LC in opsawg makes sense. Ahead of
>> that, it would be good to send an email to opsawg@ (as well as the
>> authors of draft-ietf-opsawg-capwap-alt-tunnel and RFC7494) to get more
>> eyes on the text.  If there is to be a presentation, having people clued
>> in ahead of time would be useful; plus any discussion can be addressed
>> directly.
>>
>> In particular, you have questions regarding implementations and full
>> ECN, so understanding the landscape would be a very useful thing.
>>
>> Joe
>>
>>> Regards, B.
>>>
>>>> Benoit, Warren,
>>>>
>>>> I am about to write text into a draft adopted in tsvwg that updates
>>>> the ECN section of the CAPWAP protocol spec [RFC5415]. See the email
>>>> starting this thread below for details.
>>>>
>>>> Please advise:
>>>> * whether you would like the draft last called in the ops-area WG as
>>>> suggested by Margaret below.
>>>> * to which mailing list(s) you would like me to forward announcements
>>>> of draft revisions.
>>>> * whether you would like me to present a brief heads-up in any
>>>> ops-area session in Prague (I am sure you could do a heads-up 
>>>> without me).
>>>>
>>>> [Margaret, Michael, thanks for your responses]
>>>>
>>>> Cheers
>>>>
>>>>
>>>> Bob
>>>>
>>>>
>>>> -------- Forwarded Message --------
>>>> Subject:     Re: Update to RFC5415 (ex
>>>> draft-ietf-capwap-protocol-specification)?
>>>> Date:     Mon, 12 Jun 2017 13:03:52 -0400
>>>> From:     Margaret Cullen <mrcullen42@gmail.com>
>>>> To:     Bob Briscoe <ietf@bobbriscoe.net>
>>>> CC:     Margaret Wasserman <mrw@painless-security.com>, Mahalingam 
>>>> Mani
>>>> <mmani@avaya.com>, Dorothy Gellert <dorothy.gellert@gmail.com>,
>>>> Michael Montemurro <mmontemurro@rim.com>, Dorothy Stanley
>>>> <dstanley@arubanetworks.com>
>>>>
>>>>
>>>>
>>>> I don’t object to the update.  I agree with making it as small as
>>>> possible.
>>>>
>>>> I am not sure that the main protagonists of CAPWAP are all still
>>>> active in the IETF, and there is no current WG responsible for
>>>> maintaining the document.  You might want to talk to the OPS ADs, and
>>>> see if they would like to LC the CAPWAP changes in the ops-area WG.
>>>>
>>>> Margaret
>>>>
>>>> On 12/06/17 17:17, Michael Montemurro wrote:
>>>>> Bob,
>>>>>
>>>>> Thanks. I don’t have any issues with updating the ECN text. In my
>>>> opinion, I would just add the support minimally. I would not recommend
>>>> playing with specifying mandatory behavior.
>>>>> Cheers,
>>>>>
>>>>> Mike
>>>>> On Jun 12, 2017, at 9:08 AM, Bob Briscoe <ietf@bobbriscoe.net
>>>>> <mailto:ietf@bobbriscoe.net>> wrote:
>>>>>
>>>>> Margaret, Mahalingam, Dorothy, Michael, Dorothy,
>>>>>
>>>>> I've not seen a reply to the email below, so I'm adding the ex-chairs
>>>>> of the original CAPWAP WG.
>>>>> I need help finding which current WG is responsible for maintaining
>>>>> this RFC and finding the current email @s of the main protagonists.
>>>>>
>>>>> Cheers
>>>>>
>>>>>
>>>>> Bob
>>>>>
>>>>> -------- Forwarded Message --------
>>>>> Subject:     Update to RFC5415 (ex
>>>>> draft-ietf-capwap-protocol-specification)?
>>>>> Date:     Mon, 5 Jun 2017 14:44:47 +0100
>>>>> From:     Bob Briscoe <ietf@bobbriscoe.net>
>>>>> To:     draft-ietf-capwap-protocol-specification@ietf.org,
>>>>> mmontemurro@rim.com, dstanley@arubanetworks.com
>>>>>
>>>>>
>>>>>
>>>>> Pat, Michael, Dorothy, [I think I have got Michael and Dorothy's
>>>>> emails, but I couldn't find a recent one for Pat, so pls forward]
>>>>>
>>>>> In 2010, a year after RFC 5415 was published, the sections on ECN
>>>>> were effectively updated by RFC6040, which made some subtle but
>>>>> important changes to IP-in-IP tunnelling of ECN.
>>>>>
>>>>> RFC6040 updated RFC3168, which RFC5415 refers to normatively. By a
>>>>> lazy interpretation of the IETF process there is nothing to do,
>>>>> because RFC5415 automatically refers to any update of RFC3168.
>>>>> Nonetheless, there is no text to say how a CAPWAP implementation
>>>>> ought to work with the new ECN tunnelling in RFC6040.
>>>>>
>>>>> I am in the process of revising a draft chartered in tsvwg.
>>>>> https://tools.ietf.org/html/draft-ietf-tsvwg-rfc6040update-shim-01
>>>>> In the next rev it will clarify that shim headers (like CAPWAP)
>>>>> between an IP outer and a L2 inner that contains an inner IP header
>>>>> as payload are within scope of RFC6040.
>>>>>
>>>>> I was intending to include CAPWAP in the list of protocols that
>>>>> already encapsulate ECN correctly. However, the ECN text in RFC5415
>>>>> is not quite right for the updated way that ECN tunnelling is 
>>>>> specified.
>>>>>
>>>>> Do you want this new draft to update the CAPWAP ECN text?
>>>>>
>>>>> We could:
>>>>> * either do this minimally,
>>>>> * or (if most current implementations support ECN anyway) we could go
>>>>> further and somehow make ECN support mandatory as long as we don't
>>>>> make any existing CAPWAP implementations non-compliant. RFC5415
>>>>> already aspires to this at the end of Section 14:
>>>>>     Future versions of the CAPWAP protocol should consider mandating
>>>>>     support for the "full functionality option".
>>>>> The rest of this email gives you background, to save having to read
>>>>> the full RFCs.
>>>>>
>>>>>
>>>>> *Background**to RFC6040 relevant to CAPWAP
>>>>> *
>>>>> RFC 5415 refers normatively to RFC 3168 for ECN tunnelling.
>>>>> RFC6040 introduced two main changes to RFC3168 (all the normative
>>>>> text is in Section 4
>>>>> <https://tools.ietf.org/html/rfc6040#section-4>), summarized here:
>>>>>
>>>>> *Decap: **
>>>>> ** MUST implement decap behaviour to claim compliance with RFC6040
>>>>>      (RFC5415 does not comply with this, because ECN decap behaviour
>>>>> is not mandatory)
>>>>> * Minor changes to decap behaviour to:
>>>>>    + add handling of unexpected combinations of inner and outer ECN
>>>>> field to cater for bugs on upstream network nodes
>>>>>
>>>>> *Encap: **
>>>>> *
>>>>> * Different modes: Instead of the old Limited and Full Functionality
>>>>> modes (of the whole tunnel), there's only one mode at decap, but two
>>>>> modes at encap:
>>>>>    + compatibility mode (zero the outer ECN): same as the old limited
>>>>> compatibility mode, but ingress only
>>>>>    + normal mode (copy inner ECN to outer, slightly different to the
>>>>> old full functionality mode, to bring all IP-in-IP tunnelling into
>>>>> line with the previous IPsec ingress behaviour)
>>>>>
>>>>> * Ingress MUST check that egress supports any current or previous ECN
>>>>> decap RFCs before using normal mode
>>>>>      *(**Primary safety requirement to prevent congestion signals
>>>>> being black-holed at egress)*
>>>>>      (CAPWAP already complies)
>>>>>
>>>>> * Ingress MUST implement both compatibility and normal modes to 
>>>>> comply
>>>>>      (CAPWAP doesn't currently comply, but the above quote from
>>>>> section 14 aspires to this)
>>>>>
>>>>>
>>>>> *Background**to ECN Support in RFC5415 on CAPWAP
>>>>> *
>>>>> RFC5415 discusses ECN in the following sections (I have quoted
>>>>> relevant extracts of normative text):
>>>>>
>>>>> * 4.5.2.  Quality of Service
>>>>> <https://tools.ietf.org/html/rfc5415#section-4.5.2>
>>>>>     CAPWAP ACs and WTPs SHALL implement the limited
>>>>>     functionality and are RECOMMENDED to implement the full 
>>>>> functionality
>>>>>     described in [RFC3168 <https://tools.ietf.org/html/rfc3168>].
>>>>> * 4.6.25 ECN Support 
>>>>> <https://tools.ietf.org/html/rfc5415#section-4.6.25>
>>>>>
>>>>> ECN Support message element
>>>>>        0 -  Limited ECN Support
>>>>>        1 -  Full and Limited ECN Support
>>>>> * 6.1.  Join Request 
>>>>> <https://tools.ietf.org/html/rfc5415#section-6.1>
>>>>>     The following message elements MUST be included in the Join 
>>>>> Request
>>>>>     message.
>>>>>    [...]
>>>>>     o  ECN Support, see Section 4.6.25 
>>>>> <https://tools.ietf.org/html/rfc5415#section-4.6.25>
>>>>> * 14.  Transport Considerations
>>>>> <https://tools.ietf.org/html/rfc5415#section-14>
>>>>>     The CAPWAP protocol mandates support of the Explicit Congestion
>>>>>     Notification (ECN) through a mode of operation named "limited
>>>>>     functionality option", detailed in section 9.1.1 of [RFC3168]
>>>>> <https://tools.ietf.org/html/rfc3168#section-9.1.1>.
>>>>>     Future versions of the CAPWAP protocol should consider mandating
>>>>>     support for the "full functionality option".
>>>>> * 15.  IANA Considerations
>>>>> <https://tools.ietf.org/html/rfc5415#section-15>
>>>>>     15.16.  ECN Support
>>>>> <https://tools.ietf.org/html/rfc5415#section-15.16>
>>>>>     The values zero (0) and one (1) are
>>>>>     allocated in this specification, and can be found in Section 
>>>>> 4.6.25 <https://tools.ietf.org/html/rfc5415#section-4.6.25>.
>>>>>
>>>>> Regards
>>>>>
>>>>>
>>>>> Bob
>>>>>
>>>>>
>>>>> -- 
>>>>> ________________________________________________________________
>>>>> Bob Briscoe http://bobbriscoe.net/
>

-- 
________________________________________________________________
Bob Briscoe                               http://bobbriscoe.net/


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From: Eliot Lear <lear@cisco.com>
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Subject: [OPSAWG] FYI on draft-ietf-opsawg-mud
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Hi everyone,

I wanted to give a brief update on this draft.  Right now we've resolved
a lot of comments in our previous version.  I am awaiting an update on
draft-ietf-netmod-acl-model, which is undergoing revisions, as discussed
in the last opsawg meeting.  Once that has taken place I will rev the
draft again.  At the same time, we have gotten some amount of experience
in terms of generating config that we can share in the draft, much of
which is common sense.  And so, for instance, we would want to probably
at least suggest or perhaps require that MUD files that are generated
use "permit" parts of the ACLs to keep things simple at the beginning.=20
Also, making use of IP addresses themselves in the ACL would be
considered unfriendly, unless it's a multicast address.  This is because
the whole scaling function of MUD is to abstract those addresses out.

Beyond that, look for more before the last call cutoff.

Eliot



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From nobody Tue Jun 20 06:21:24 2017
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Subject: [OPSAWG] I-D Action: draft-ietf-opsawg-ipfix-bgp-community-02.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 Operations and Management Area Working Group of the IETF.

        Title           : Export BGP community information in IP Flow Information Export (IPFIX)
        Authors         : Zhenqiang Li
                          Rong Gu
                          Jie Dong
	Filename        : draft-ietf-opsawg-ipfix-bgp-community-02.txt
	Pages           : 17
	Date            : 2017-06-20

Abstract:
   This draft introduces several information elements in IPFIX
   information model [RFC7012] to enable IPFIX [RFC7011] to export the
   BGP community information, including standard community defined in
   [RFC1997], extended community defined in [RFC4360], large community
   defined in [RFC8092], community container defined in
   [I-D.ietf-idr-wide-bgp-communities].


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-opsawg-ipfix-bgp-community/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-opsawg-ipfix-bgp-community-02
https://datatracker.ietf.org/doc/html/draft-ietf-opsawg-ipfix-bgp-community-02

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-opsawg-ipfix-bgp-community-02


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

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


From nobody Tue Jun 20 18:22:16 2017
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From: Tianran Zhou <zhoutianran@huawei.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
CC: "opsawg-chairs@ietf.org" <opsawg-chairs@ietf.org>
Thread-Topic: WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Subject: Re: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Hi All,

Let's conclude this adoption call.
>From the discussion in the mailing list, there are enough support for the a=
doption of this document, and no objection.
So we would like to adopt this I-D in OPSAWG.
The authors, could you please update the document and resubmit to the WG.

Cheers,
Tianran

> -----Original Message-----
> From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of Tianran Zhou
> Sent: Monday, June 05, 2017 9:55 AM
> To: opsawg@ietf.org
> Cc: opsawg-chairs@ietf.org
> Subject: [OPSAWG] WG adoption poll for
> draft-wu-opsawg-service-model-explained-06
>=20
> Dear OPSAWG,
>=20
> In Seoul, we got enough interest and positive response on this service mo=
dels
> explained draft.
> By the authors' request, this email starts a formal poll. The chairs woul=
d
> like to know if the WG participants agree that the following document sho=
uld
> be adopted as a WG document in OPSAWG.
>=20
> Service Models Explained
> https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-explain
> ed/
>=20
> The adoption poll will take two weeks. Please let us know your opinion by
> June 19. It would also be good to hear who is willing to review this docu=
ment.
>=20
> Since we already found that the majority of the f2f participants at our
> IETF97 session like this idea, please do speak up now if you do not agree
> or have serious objections (with explanation of course).
>=20
> Regards,
> Tianran,  OPSAWG Co-Chair
>=20
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg


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From: "Einar Nilsen-Nygaard (einarnn)" <einarnn@cisco.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
Thread-Topic: binding ACLs to mud devices || [was Re: FYI on draft-ietf-opsawg-mud]
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Date: Thu, 22 Jun 2017 16:39:30 +0000
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Subject: [OPSAWG] binding ACLs to mud devices || [was Re: FYI on draft-ietf-opsawg-mud]
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I just had a chat with Eliot after reviewing the latest draft he is working=
 on, and I expressed a couple of concerns about how the from-device/to-devi=
ce semantics for traffic have been baked into the ACL definition. I think t=
his approach is intrusive and somewhat non-obvious (depending who you are;-=
), so I'd like to propose a change to this to take the binding of an ACL to=
 a "MUD device" out of the ACL and instead have a standalone container cons=
truct to express this binding. I think that this could also set the basic d=
irection for future extensibility targeted at going beyond just access poli=
cy.

I will propose something early-to-mid next week and will work with Eliot to=
 ensure the cut-off isn't missed.

Cheers,

Einar


> Hi everyone,
>=20
> I wanted to give a brief update on this draft.  Right now we've resolved
> a lot of comments in our previous version.  I am awaiting an update on
> draft-ietf-netmod-acl-model, which is undergoing revisions, as discussed
> in the last opsawg meeting.  Once that has taken place I will rev the
> draft again.  At the same time, we have gotten some amount of experience
> in terms of generating config that we can share in the draft, much of
> which is common sense.  And so, for instance, we would want to probably
> at least suggest or perhaps require that MUD files that are generated
> use "permit" parts of the ACLs to keep things simple at the beginning.=20
> Also, making use of IP addresses themselves in the ACL would be
> considered unfriendly, unless it's a multicast address.  This is because
> the whole scaling function of MUD is to abstract those addresses out.
>=20
> Beyond that, look for more before the last call cutoff.
>=20
> Eliot
>=20
>=20


From nobody Fri Jun 23 01:13:07 2017
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Reply-To: <adrian@olddog.co.uk>
From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'Tianran Zhou'" <zhoutianran@huawei.com>, <opsawg@ietf.org>
Cc: <opsawg-chairs@ietf.org>
References: <BBA82579FD347748BEADC4C445EA0F21A238A55D@NKGEML515-MBX.china.huawei.com> <BBA82579FD347748BEADC4C445EA0F21A23AC80C@NKGEML515-MBX.china.huawei.com>
In-Reply-To: <BBA82579FD347748BEADC4C445EA0F21A23AC80C@NKGEML515-MBX.china.huawei.com>
Date: Fri, 23 Jun 2017 09:12:44 +0100
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Subject: Re: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-explained-06
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Thanks,

Will do.

Adrian

> -----Original Message-----
> From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of Tianran Zhou
> Sent: 21 June 2017 02:22
> To: opsawg@ietf.org
> Cc: opsawg-chairs@ietf.org
> Subject: Re: [OPSAWG] WG adoption poll for draft-wu-opsawg-service-model-
> explained-06
> 
> Hi All,
> 
> Let's conclude this adoption call.
> >From the discussion in the mailing list, there are enough support for the
> adoption of this document, and no objection.
> So we would like to adopt this I-D in OPSAWG.
> The authors, could you please update the document and resubmit to the WG.
> 
> Cheers,
> Tianran
> 
> > -----Original Message-----
> > From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of Tianran Zhou
> > Sent: Monday, June 05, 2017 9:55 AM
> > To: opsawg@ietf.org
> > Cc: opsawg-chairs@ietf.org
> > Subject: [OPSAWG] WG adoption poll for
> > draft-wu-opsawg-service-model-explained-06
> >
> > Dear OPSAWG,
> >
> > In Seoul, we got enough interest and positive response on this service
models
> > explained draft.
> > By the authors' request, this email starts a formal poll. The chairs would
> > like to know if the WG participants agree that the following document should
> > be adopted as a WG document in OPSAWG.
> >
> > Service Models Explained
> > https://datatracker.ietf.org/doc/draft-wu-opsawg-service-model-explain
> > ed/
> >
> > The adoption poll will take two weeks. Please let us know your opinion by
> > June 19. It would also be good to hear who is willing to review this
document.
> >
> > Since we already found that the majority of the f2f participants at our
> > IETF97 session like this idea, please do speak up now if you do not agree
> > or have serious objections (with explanation of course).
> >
> > Regards,
> > Tianran,  OPSAWG Co-Chair
> >
> > _______________________________________________
> > OPSAWG mailing list
> > OPSAWG@ietf.org
> > https://www.ietf.org/mailman/listinfo/opsawg
> 
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg


From nobody Fri Jun 23 03:06:13 2017
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Subject: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-explained-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 Operations and Management Area Working Group of the IETF.

        Title           : Service Models Explained
        Authors         : Qin Wu
                          Will Liu
                          Adrian Farrel
	Filename        : draft-ietf-opsawg-service-model-explained-00.txt
	Pages           : 21
	Date            : 2017-06-23

Abstract:
   The IETF has produced a considerable number of data modules in the
   YANG modelling language.  The majority of these modules are used to
   construct data models to model devices or monolithic functions and
   they allow access for configuration and to read operational status.

   A small number of YANG modules have been defined to model services
   (for example, the Layer Three Virtual Private Network Service Model
   produced by the L3SM working group and documented in RFC 8049).

   This document briefly sets out the scope of and purpose of an IETF
   service model, and it also shows where a service model might fit into
   a Software Defined Networking architecture.  Note that service models
   do not make any assumption of how a service is actually engineered
   and delivered for a customer; details of how network protocols and
   devices are engineered to deliver a service are captured in other
   models that are not exposed through the Customer-Provider Interface.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-explained/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-opsawg-service-model-explained-00
https://datatracker.ietf.org/doc/html/draft-ietf-opsawg-service-model-explained-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 Fri Jun 23 17:11:07 2017
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Subject: [OPSAWG] opsawg - Requested session has been scheduled for IETF 99
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Dear Tianran Zhou,

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

opsawg Session 1 (2:00:00)
    Tuesday, Afternoon Session I 1330-1530
    Room Name: Congress Hall III size: 250
    ---------------------------------------------
    

Special Note: Joint session with OPSAREA


Request Information:


---------------------------------------------------------
Working Group Name: Operations and Management Area Working Group
Area Name: Operations and Management Area
Session Requester: Tianran Zhou

Number of Sessions: 1
Length of Session(s):  2 Hours
Number of Attendees: 100
Conflicts to Avoid: 
 First Priority: nvo3 ippm
 Second Priority: idr detnet



People who must be present:
  Ignas Bagdonas
  Tianran Zhou
  Warren Kumari
  Benoit Claise

Resources Requested:

Special Requests:
  PLEASE NOTE: Combined OpsAWG / OpsAREA
---------------------------------------------------------


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From: Tianran Zhou <zhoutianran@huawei.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
CC: "opsawg-chairs@ietf.org" <opsawg-chairs@ietf.org>
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Hi WG,

The OPSAWG meeting is scheduled on Tuesday, Afternoon Session I 1330-1530, =
according to the final agenda.
Please send your request to the mailing list or the chairs for your present=
ation.

Best,
Tianran


From nobody Tue Jun 27 14:13:36 2017
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From: Haoyu song <haoyu.song@huawei.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
Thread-Topic: new draft on dynamic network probes for interactive query
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Subject: [OPSAWG] new draft on dynamic network probes for interactive query
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Dear all,

We have submitted a draft describing the use case and requirements for dyna=
mic network probes. Please kindly provide any comments and suggestions to h=
elp us improve the work. Thank you very much!

https://datatracker.ietf.org/doc/draft-song-opsawg-dnp4iq/

Abstract: This document discusses the motivation and requirements for
   supporting interactive network queries and data collection through a
   mechanism called Dynamic Network Probes (DNP).  Network applications
   and OAM have various data requirements from the data plane.  The
   unpredictable and interactive nature of the query for network data
   analytics asks for dynamic and on-demand data collection
   capabilities.  As user programmable and configurable data plane is
   becoming a reality, it can be extended to support interactive query
   through DNPs.  DNP supports node, path, and flow-based data
   preprocessing and collection.  For example, in-situ OAM (iOAM) with
   user-defined flow-based data collection can be programmed and
   configured through DNP.  DNPs serve as a building block of an
   integrated network data telemetry and analytics platform which
   involves the network data plane as an active component for user-
   defined data collection and preparation.

Haoyu

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<p class=3D"MsoNormal">Dear all,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">We have submitted a draft describing the use case an=
d requirements for dynamic network probes. Please kindly provide any commen=
ts and suggestions to help us improve the work. Thank you very much!<o:p></=
o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><a href=3D"https://datatracker.ietf.org/doc/draft-so=
ng-opsawg-dnp4iq/">https://datatracker.ietf.org/doc/draft-song-opsawg-dnp4i=
q/</a><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Abstract: This document discusses the motivation and=
 requirements for<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; supporting interactive network queries =
and data collection through a<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp; &nbsp;mechanism called Dynamic Network Probes=
 (DNP).&nbsp; Network applications<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; and OAM have various data requirements =
from the data plane.&nbsp; The<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; unpredictable and interactive nature of=
 the query for network data<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; analytics asks for dynamic and on-deman=
d data collection<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; capabilities.&nbsp; As user programmabl=
e and configurable data plane is<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; becoming a reality, it can be extended =
to support interactive query<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; through DNPs.&nbsp; DNP supports node, =
path, and flow-based data<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; preprocessing and collection.&nbsp; For=
 example, in-situ OAM (iOAM) with<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; user-defined flow-based data collection=
 can be programmed and<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; configured through DNP.&nbsp; DNPs serv=
e as a building block of an<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; integrated network data telemetry and a=
nalytics platform which<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; involves the network data plane as an a=
ctive component for user-<o:p></o:p></p>
<p class=3D"MsoNormal">&nbsp;&nbsp; defined data collection and preparation=
.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Haoyu<o:p></o:p></p>
</div>
</body>
</html>

--_000_78A2745BE9B57D4F9D27F86655EB87F925957244SJCEML702CHMchi_--


From nobody Thu Jun 29 09:39:58 2017
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Operations and Management Area Working Group of the IETF.

        Title           : Service Models Explained
        Authors         : Qin Wu
                          Will Liu
                          Adrian Farrel
	Filename        : draft-ietf-opsawg-service-model-explained-01.txt
	Pages           : 21
	Date            : 2017-06-29

Abstract:
   The IETF has produced a considerable number of data modules in the
   YANG modelling language.  The majority of these modules are used to
   construct data models to model devices or monolithic functions and
   they allow access for configuration and to read operational status.

   A small number of YANG modules have been defined to model services
   (for example, the Layer Three Virtual Private Network Service Model
   produced by the L3SM working group and documented in RFC 8049).

   This document briefly sets out the scope of and purpose of an IETF
   service model, and it also shows where a service model might fit into
   a Software Defined Networking architecture.  Note that service models
   do not make any assumption of how a service is actually engineered
   and delivered for a customer; details of how network protocols and
   devices are engineered to deliver a service are captured in other
   models that are not exposed through the Customer-Provider Interface.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-explained/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-opsawg-service-model-explained-01
https://datatracker.ietf.org/doc/html/draft-ietf-opsawg-service-model-explained-01

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-opsawg-service-model-explained-01


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 Thu Jun 29 09:46:48 2017
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Subject: Re: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-explained-01.txt
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Hi,  

I wouldn't normally flash an I-D this quickly, but Jerry Bonner spotted a rather
important missing "not". Thanks Jerry!

Cheers,
Adrian

> -----Original Message-----
> From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of internet-
> drafts@ietf.org
> Sent: 29 June 2017 17:40
> To: i-d-announce@ietf.org
> Cc: opsawg@ietf.org
> Subject: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-explained-01.txt
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts
directories.
> This draft is a work item of the Operations and Management Area Working Group
> of the IETF.
> 
>         Title           : Service Models Explained
>         Authors         : Qin Wu
>                           Will Liu
>                           Adrian Farrel
> 	Filename        : draft-ietf-opsawg-service-model-explained-01.txt
> 	Pages           : 21
> 	Date            : 2017-06-29
> 
> Abstract:
>    The IETF has produced a considerable number of data modules in the
>    YANG modelling language.  The majority of these modules are used to
>    construct data models to model devices or monolithic functions and
>    they allow access for configuration and to read operational status.
> 
>    A small number of YANG modules have been defined to model services
>    (for example, the Layer Three Virtual Private Network Service Model
>    produced by the L3SM working group and documented in RFC 8049).
> 
>    This document briefly sets out the scope of and purpose of an IETF
>    service model, and it also shows where a service model might fit into
>    a Software Defined Networking architecture.  Note that service models
>    do not make any assumption of how a service is actually engineered
>    and delivered for a customer; details of how network protocols and
>    devices are engineered to deliver a service are captured in other
>    models that are not exposed through the Customer-Provider Interface.
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-explained/
> 
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-opsawg-service-model-explained-01
> https://datatracker.ietf.org/doc/html/draft-ietf-opsawg-service-model-
> explained-01
> 
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-opsawg-service-model-explained-01
> 
> 
> 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/
> 
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg


From nobody Fri Jun 30 00:15:28 2017
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Hi Adrian, all,=20

I reviewed this version.=20

I do think it is ready for a WGLC.=20

Cheers,
Med

> -----Message d'origine-----
> De=A0: OPSAWG [mailto:opsawg-bounces@ietf.org] De la part de Adrian Farre=
l
> Envoy=E9=A0: jeudi 29 juin 2017 18:47
> =C0=A0: opsawg@ietf.org
> Objet=A0: Re: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-
> explained-01.txt
>=20
> Hi,
>=20
> I wouldn't normally flash an I-D this quickly, but Jerry Bonner spotted a
> rather
> important missing "not". Thanks Jerry!
>=20
> Cheers,
> Adrian
>=20
> > -----Original Message-----
> > From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of internet-
> > drafts@ietf.org
> > Sent: 29 June 2017 17:40
> > To: i-d-announce@ietf.org
> > Cc: opsawg@ietf.org
> > Subject: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-explained=
-
> 01.txt
> >
> >
> > A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> > This draft is a work item of the Operations and Management Area Working
> Group
> > of the IETF.
> >
> >         Title           : Service Models Explained
> >         Authors         : Qin Wu
> >                           Will Liu
> >                           Adrian Farrel
> > 	Filename        : draft-ietf-opsawg-service-model-explained-01.txt
> > 	Pages           : 21
> > 	Date            : 2017-06-29
> >
> > Abstract:
> >    The IETF has produced a considerable number of data modules in the
> >    YANG modelling language.  The majority of these modules are used to
> >    construct data models to model devices or monolithic functions and
> >    they allow access for configuration and to read operational status.
> >
> >    A small number of YANG modules have been defined to model services
> >    (for example, the Layer Three Virtual Private Network Service Model
> >    produced by the L3SM working group and documented in RFC 8049).
> >
> >    This document briefly sets out the scope of and purpose of an IETF
> >    service model, and it also shows where a service model might fit int=
o
> >    a Software Defined Networking architecture.  Note that service model=
s
> >    do not make any assumption of how a service is actually engineered
> >    and delivered for a customer; details of how network protocols and
> >    devices are engineered to deliver a service are captured in other
> >    models that are not exposed through the Customer-Provider Interface.
> >
> >
> > The IETF datatracker status page for this draft is:
> > https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-
> explained/
> >
> > There are also htmlized versions available at:
> > https://tools.ietf.org/html/draft-ietf-opsawg-service-model-explained-0=
1
> > https://datatracker.ietf.org/doc/html/draft-ietf-opsawg-service-model-
> > explained-01
> >
> > A diff from the previous version is available at:
> > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-opsawg-service-model-
> explained-01
> >
> >
> > 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/
> >
> > _______________________________________________
> > OPSAWG mailing list
> > OPSAWG@ietf.org
> > https://www.ietf.org/mailman/listinfo/opsawg
>=20
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg


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From: Tianran Zhou <zhoutianran@huawei.com>
To: "mohamed.boucadair@orange.com" <mohamed.boucadair@orange.com>, "adrian@olddog.co.uk" <adrian@olddog.co.uk>, "opsawg@ietf.org" <opsawg@ietf.org>
Thread-Topic: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-explained-01.txt
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Date: Fri, 30 Jun 2017 07:26:32 +0000
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References: <149875439741.27864.9684565417792480679@ietfa.amsl.com> <149401d2f0f7$45593bf0$d00bb3d0$@olddog.co.uk> <787AE7BB302AE849A7480A190F8B933009FFD7AB@OPEXCLILMA3.corporate.adroot.infra.ftgroup>
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Hi Med,

> -----Original Message-----
> From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of
> mohamed.boucadair@orange.com
> Sent: Friday, June 30, 2017 3:15 PM
> To: adrian@olddog.co.uk; opsawg@ietf.org
> Subject: Re: [OPSAWG] I-D Action:
> draft-ietf-opsawg-service-model-explained-01.txt
>=20
> Hi Adrian, all,
>=20
> I reviewed this version.
>=20
> I do think it is ready for a WGLC.

Really? It's surprisingly fast. :-) Though I know this draft evolved severa=
l versions before WG adoption.

Tianran
>=20
> Cheers,
> Med
>=20
> > -----Message d'origine-----
> > De=A0: OPSAWG [mailto:opsawg-bounces@ietf.org] De la part de Adrian
> > Farrel Envoy=E9=A0: jeudi 29 juin 2017 18:47 =C0=A0: opsawg@ietf.org Ob=
jet=A0:
> > Re: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-
> > explained-01.txt
> >
> > Hi,
> >
> > I wouldn't normally flash an I-D this quickly, but Jerry Bonner
> > spotted a rather important missing "not". Thanks Jerry!
> >
> > Cheers,
> > Adrian
> >
> > > -----Original Message-----
> > > From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of internet-
> > > drafts@ietf.org
> > > Sent: 29 June 2017 17:40
> > > To: i-d-announce@ietf.org
> > > Cc: opsawg@ietf.org
> > > Subject: [OPSAWG] I-D Action:
> > > draft-ietf-opsawg-service-model-explained-
> > 01.txt
> > >
> > >
> > > A New Internet-Draft is available from the on-line Internet-Drafts
> > directories.
> > > This draft is a work item of the Operations and Management Area
> > > Working
> > Group
> > > of the IETF.
> > >
> > >         Title           : Service Models Explained
> > >         Authors         : Qin Wu
> > >                           Will Liu
> > >                           Adrian Farrel
> > > 	Filename        : draft-ietf-opsawg-service-model-explained-01.txt
> > > 	Pages           : 21
> > > 	Date            : 2017-06-29
> > >
> > > Abstract:
> > >    The IETF has produced a considerable number of data modules in the
> > >    YANG modelling language.  The majority of these modules are used t=
o
> > >    construct data models to model devices or monolithic functions and
> > >    they allow access for configuration and to read operational status=
.
> > >
> > >    A small number of YANG modules have been defined to model services
> > >    (for example, the Layer Three Virtual Private Network Service Mode=
l
> > >    produced by the L3SM working group and documented in RFC 8049).
> > >
> > >    This document briefly sets out the scope of and purpose of an IETF
> > >    service model, and it also shows where a service model might fit i=
nto
> > >    a Software Defined Networking architecture.  Note that service mod=
els
> > >    do not make any assumption of how a service is actually engineered
> > >    and delivered for a customer; details of how network protocols and
> > >    devices are engineered to deliver a service are captured in other
> > >    models that are not exposed through the Customer-Provider Interfac=
e.
> > >
> > >
> > > The IETF datatracker status page for this draft is:
> > > https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-
> > explained/
> > >
> > > There are also htmlized versions available at:
> > >
> https://tools.ietf.org/html/draft-ietf-opsawg-service-model-explaine
> > > d-01
> > >
> https://datatracker.ietf.org/doc/html/draft-ietf-opsawg-service-mode
> > > l-
> > > explained-01
> > >
> > > A diff from the previous version is available at:
> > > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-opsawg-service-model-
> > explained-01
> > >
> > >
> > > 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/
> > >
> > > _______________________________________________
> > > OPSAWG mailing list
> > > OPSAWG@ietf.org
> > > https://www.ietf.org/mailman/listinfo/opsawg
> >
> > _______________________________________________
> > OPSAWG mailing list
> > OPSAWG@ietf.org
> > https://www.ietf.org/mailman/listinfo/opsawg
>=20
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg


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From: <mohamed.boucadair@orange.com>
To: Tianran Zhou <zhoutianran@huawei.com>, "adrian@olddog.co.uk" <adrian@olddog.co.uk>, "opsawg@ietf.org" <opsawg@ietf.org>
Thread-Topic: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-explained-01.txt
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References: <149875439741.27864.9684565417792480679@ietfa.amsl.com> <149401d2f0f7$45593bf0$d00bb3d0$@olddog.co.uk> <787AE7BB302AE849A7480A190F8B933009FFD7AB@OPEXCLILMA3.corporate.adroot.infra.ftgroup> <BBA82579FD347748BEADC4C445EA0F21A23B1ED1@NKGEML515-MBX.china.huawei.com>
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Subject: Re: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-explained-01.txt
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Re-,

I confirm my review. The document is ready to move forward.=20

That's not fast for such a stable and very scoped document.

Cheers,
Med

> -----Message d'origine-----
> De=A0: Tianran Zhou [mailto:zhoutianran@huawei.com]
> Envoy=E9=A0: vendredi 30 juin 2017 09:27
> =C0=A0: BOUCADAIR Mohamed IMT/OLN; adrian@olddog.co.uk; opsawg@ietf.org
> Objet=A0: RE: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-
> explained-01.txt
>=20
> Hi Med,
>=20
> > -----Original Message-----
> > From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of
> > mohamed.boucadair@orange.com
> > Sent: Friday, June 30, 2017 3:15 PM
> > To: adrian@olddog.co.uk; opsawg@ietf.org
> > Subject: Re: [OPSAWG] I-D Action:
> > draft-ietf-opsawg-service-model-explained-01.txt
> >
> > Hi Adrian, all,
> >
> > I reviewed this version.
> >
> > I do think it is ready for a WGLC.
>=20
> Really? It's surprisingly fast. :-) Though I know this draft evolved
> several versions before WG adoption.
>=20
> Tianran
> >
> > Cheers,
> > Med
> >
> > > -----Message d'origine-----
> > > De=A0: OPSAWG [mailto:opsawg-bounces@ietf.org] De la part de Adrian
> > > Farrel Envoy=E9=A0: jeudi 29 juin 2017 18:47 =C0=A0: opsawg@ietf.org =
Objet=A0:
> > > Re: [OPSAWG] I-D Action: draft-ietf-opsawg-service-model-
> > > explained-01.txt
> > >
> > > Hi,
> > >
> > > I wouldn't normally flash an I-D this quickly, but Jerry Bonner
> > > spotted a rather important missing "not". Thanks Jerry!
> > >
> > > Cheers,
> > > Adrian
> > >
> > > > -----Original Message-----
> > > > From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of internet=
-
> > > > drafts@ietf.org
> > > > Sent: 29 June 2017 17:40
> > > > To: i-d-announce@ietf.org
> > > > Cc: opsawg@ietf.org
> > > > Subject: [OPSAWG] I-D Action:
> > > > draft-ietf-opsawg-service-model-explained-
> > > 01.txt
> > > >
> > > >
> > > > A New Internet-Draft is available from the on-line Internet-Drafts
> > > directories.
> > > > This draft is a work item of the Operations and Management Area
> > > > Working
> > > Group
> > > > of the IETF.
> > > >
> > > >         Title           : Service Models Explained
> > > >         Authors         : Qin Wu
> > > >                           Will Liu
> > > >                           Adrian Farrel
> > > > 	Filename        : draft-ietf-opsawg-service-model-explained-
> 01.txt
> > > > 	Pages           : 21
> > > > 	Date            : 2017-06-29
> > > >
> > > > Abstract:
> > > >    The IETF has produced a considerable number of data modules in
> the
> > > >    YANG modelling language.  The majority of these modules are used
> to
> > > >    construct data models to model devices or monolithic functions
> and
> > > >    they allow access for configuration and to read operational
> status.
> > > >
> > > >    A small number of YANG modules have been defined to model
> services
> > > >    (for example, the Layer Three Virtual Private Network Service
> Model
> > > >    produced by the L3SM working group and documented in RFC 8049).
> > > >
> > > >    This document briefly sets out the scope of and purpose of an
> IETF
> > > >    service model, and it also shows where a service model might fit
> into
> > > >    a Software Defined Networking architecture.  Note that service
> models
> > > >    do not make any assumption of how a service is actually
> engineered
> > > >    and delivered for a customer; details of how network protocols
> and
> > > >    devices are engineered to deliver a service are captured in othe=
r
> > > >    models that are not exposed through the Customer-Provider
> Interface.
> > > >
> > > >
> > > > The IETF datatracker status page for this draft is:
> > > > https://datatracker.ietf.org/doc/draft-ietf-opsawg-service-model-
> > > explained/
> > > >
> > > > There are also htmlized versions available at:
> > > >
> > https://tools.ietf.org/html/draft-ietf-opsawg-service-model-explaine
> > > > d-01
> > > >
> > https://datatracker.ietf.org/doc/html/draft-ietf-opsawg-service-mode
> > > > l-
> > > > explained-01
> > > >
> > > > A diff from the previous version is available at:
> > > > https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-opsawg-service-model=
-
> > > explained-01
> > > >
> > > >
> > > > 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/
> > > >
> > > > _______________________________________________
> > > > OPSAWG mailing list
> > > > OPSAWG@ietf.org
> > > > https://www.ietf.org/mailman/listinfo/opsawg
> > >
> > > _______________________________________________
> > > OPSAWG mailing list
> > > OPSAWG@ietf.org
> > > https://www.ietf.org/mailman/listinfo/opsawg
> >
> > _______________________________________________
> > OPSAWG mailing list
> > OPSAWG@ietf.org
> > https://www.ietf.org/mailman/listinfo/opsawg


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From: "Einar Nilsen-Nygaard (einarnn)" <einarnn@cisco.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
CC: "Eliot Lear (elear)" <elear@cisco.com>
Thread-Topic: binding ACLs to mud devices || [was Re: FYI on draft-ietf-opsawg-mud]
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Date: Fri, 30 Jun 2017 14:39:21 +0000
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Subject: Re: [OPSAWG] binding ACLs to mud devices || [was Re: FYI on draft-ietf-opsawg-mud]
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