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Subject: [sfc] I-D Action: draft-ietf-sfc-nsh-ecn-support-04.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Service Function Chaining WG of the IETF.

        Title           : Explicit Congestion Notification (ECN) and Congestion Feedback Using the Network Service Header (NSH)
        Authors         : Donald E. Eastlake
                          Bob Briscoe
                          Andrew G. Malis
	Filename        : draft-ietf-sfc-nsh-ecn-support-04.txt
	Pages           : 21
	Date            : 2020-12-06

Abstract:
   Explicit congestion notification (ECN) allows a forwarding element to
   notify downstream devices of the onset of congestion without having
   to drop packets. Coupled with a means to feed information about
   congestion back to upstream nodes, this can improve network
   efficiency through better congestion control, frequently without
   packet drops. This document specifies ECN and congestion feedback
   support within a Service Function Chaining (SFC) architecture domain
   through use of the Network Service Header (NSH, RFC 8300) and IP Flow
   Information Export (IPFIX,
   draft-ietf-tsvwg-tunnel-congestion-feedback).



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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-sfc-nsh-ecn-support-04
https://datatracker.ietf.org/doc/html/draft-ietf-sfc-nsh-ecn-support-04

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-nsh-ecn-support-04


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

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



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From: Donald Eastlake <d3e3e3@gmail.com>
Date: Sun, 6 Dec 2020 22:00:21 -0500
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Subject: Re: [sfc] I-D Action: draft-ietf-sfc-nsh-ecn-support-04.txt
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--00000000000087177005b5d707d5
Content-Type: text/plain; charset="UTF-8"

Hi,

This revision has a number of minor editorial changes and one technical
change:
      In order to be able to use IPFIX to measure and communicate
congestion per SFC flow requires specifying an IPFIX Information Element
for the SFC Service Path Identifier. This version of the draft includes
that specification.

Thanks,
Donald
===============================
 Donald E. Eastlake 3rd   +1-508-333-2270 (cell)
 2386 Panoramic Circle, Apopka, FL 32703 USA
 d3e3e3@gmail.com


On Sun, Dec 6, 2020 at 9:52 PM <internet-drafts@ietf.org> wrote:

>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> This draft is a work item of the Service Function Chaining WG of the IETF.
>
>         Title           : Explicit Congestion Notification (ECN) and
> Congestion Feedback Using the Network Service Header (NSH)
>         Authors         : Donald E. Eastlake
>                           Bob Briscoe
>                           Andrew G. Malis
>         Filename        : draft-ietf-sfc-nsh-ecn-support-04.txt
>         Pages           : 21
>         Date            : 2020-12-06
>
> Abstract:
>    Explicit congestion notification (ECN) allows a forwarding element to
>    notify downstream devices of the onset of congestion without having
>    to drop packets. Coupled with a means to feed information about
>    congestion back to upstream nodes, this can improve network
>    efficiency through better congestion control, frequently without
>    packet drops. This document specifies ECN and congestion feedback
>    support within a Service Function Chaining (SFC) architecture domain
>    through use of the Network Service Header (NSH, RFC 8300) and IP Flow
>    Information Export (IPFIX,
>    draft-ietf-tsvwg-tunnel-congestion-feedback).
>
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-sfc-nsh-ecn-support/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-sfc-nsh-ecn-support-04
> https://datatracker.ietf.org/doc/html/draft-ietf-sfc-nsh-ecn-support-04
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-nsh-ecn-support-04
>
>
> 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/
>
>
> _______________________________________________
> sfc mailing list
> sfc@ietf.org
> https://www.ietf.org/mailman/listinfo/sfc
>

--00000000000087177005b5d707d5
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<div dir=3D"ltr">Hi,<div><br></div><div>This revision has a number of minor=
 editorial changes and one technical change:</div><div>=C2=A0 =C2=A0 =C2=A0=
 In order to be able to use IPFIX to measure and communicate congestion per=
 SFC flow requires specifying an IPFIX Information Element for the SFC Serv=
ice Path Identifier. This version of the draft includes that specification.=
</div><div><br clear=3D"all"><div><div dir=3D"ltr" class=3D"gmail_signature=
" data-smartmail=3D"gmail_signature">Thanks,<br>Donald<br>=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D<br>=C2=A0Donald E. Eastlake 3rd =C2=A0 +1-508-333-2270 (cell)<br>=C2=A0=
2386 Panoramic Circle, Apopka, FL 32703 USA<br>=C2=A0<a href=3D"mailto:d3e3=
e3@gmail.com" target=3D"_blank">d3e3e3@gmail.com</a></div></div><br></div><=
/div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">O=
n Sun, Dec 6, 2020 at 9:52 PM &lt;<a href=3D"mailto:internet-drafts@ietf.or=
g">internet-drafts@ietf.org</a>&gt; wrote:<br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,=
204,204);padding-left:1ex"><br>
A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.<br>
This draft is a work item of the Service Function Chaining WG of the IETF.<=
br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 Explicit Congestion Notification (ECN) and Congestion Feedback Using the N=
etwork Service Header (NSH)<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Dona=
ld E. Eastlake<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Bob Briscoe<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Andrew G. Malis<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet=
f-sfc-nsh-ecn-support-04.txt<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 21<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 :=
 2020-12-06<br>
<br>
Abstract:<br>
=C2=A0 =C2=A0Explicit congestion notification (ECN) allows a forwarding ele=
ment to<br>
=C2=A0 =C2=A0notify downstream devices of the onset of congestion without h=
aving<br>
=C2=A0 =C2=A0to drop packets. Coupled with a means to feed information abou=
t<br>
=C2=A0 =C2=A0congestion back to upstream nodes, this can improve network<br=
>
=C2=A0 =C2=A0efficiency through better congestion control, frequently witho=
ut<br>
=C2=A0 =C2=A0packet drops. This document specifies ECN and congestion feedb=
ack<br>
=C2=A0 =C2=A0support within a Service Function Chaining (SFC) architecture =
domain<br>
=C2=A0 =C2=A0through use of the Network Service Header (NSH, RFC 8300) and =
IP Flow<br>
=C2=A0 =C2=A0Information Export (IPFIX,<br>
=C2=A0 =C2=A0draft-ietf-tsvwg-tunnel-congestion-feedback).<br>
<br>
<br>
<br>
The IETF datatracker status page for this draft is:<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-sfc-nsh-ecn-support/=
" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc/dra=
ft-ietf-sfc-nsh-ecn-support/</a><br>
<br>
There are also htmlized versions available at:<br>
<a href=3D"https://tools.ietf.org/html/draft-ietf-sfc-nsh-ecn-support-04" r=
el=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/draft-ietf-=
sfc-nsh-ecn-support-04</a><br>
<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-sfc-nsh-ecn-sup=
port-04" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/=
doc/html/draft-ietf-sfc-nsh-ecn-support-04</a><br>
<br>
A diff from the previous version is available at:<br>
<a href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-nsh-ecn-suppo=
rt-04" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/rfcdiff?ur=
l2=3Ddraft-ietf-sfc-nsh-ecn-support-04</a><br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
Internet-Drafts are also available by anonymous FTP at:<br>
<a href=3D"ftp://ftp.ietf.org/internet-drafts/" rel=3D"noreferrer" target=
=3D"_blank">ftp://ftp.ietf.org/internet-drafts/</a><br>
<br>
<br>
_______________________________________________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org" target=3D"_blank">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/listinfo/sfc</a><br>
</blockquote></div>

--00000000000087177005b5d707d5--


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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Mon, 7 Dec 2020 20:39:57 -0500
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To: Greg Mirsky <gregimirsky@gmail.com>
Cc: Service Function Chaining IETF list <sfc@ietf.org>, sfc-chairs@ietf.org
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Subject: Re: [sfc] Fwd: New Version Notification for draft-ietf-sfc-multi-layer-oam-05.txt
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Dear Greg & Authors

Please consider adding an improved security mechanism to protect the
integrity of the SFC Echo Request/Reply function.

This feature would be highly valuable to operators.

Thank you

Gyan

On Wed, May 20, 2020 at 10:51 PM Greg Mirsky <gregimirsky@gmail.com> wrote:

> Dear All,
> this version includes a minor update to the Security Considerations
> section.
> We, the authors, believe that the draft is ready for the WG LC. It defines
> an essential function of SFC OAM - SFP Echo request/reply. Per our
> analysis, existing OAM mechanisms cannot support both SFP ping and SFP
> traceroute. Consider ICMP. When encapsulated in NSH, it supports the ping
> function but, per our analysis, cannot be used as an SFP tracing tool.
> We much appreciate your comments and questions.
>
> Dear Jim and Joel,
> please kindly consider the WG LC for this draft.
>
> Regards,
> Greg
>
> ---------- Forwarded message ---------
> From: <internet-drafts@ietf.org>
> Date: Wed, May 20, 2020 at 6:32 PM
> Subject: New Version Notification for draft-ietf-sfc-multi-layer-oam-05.txt
> To: Bhumip Khasnabish <vumip1@gmail.com>, Cui(Linda) Wang <
> lindawangjoy@gmail.com>, Greg Mirsky <gregimirsky@gmail.com>, Wei Meng <
> meng.wei2@zte.com.cn>
>
>
>
> A new version of I-D, draft-ietf-sfc-multi-layer-oam-05.txt
> has been successfully submitted by Greg Mirsky and posted to the
> IETF repository.
>
> Name:           draft-ietf-sfc-multi-layer-oam
> Revision:       05
> Title:          Active OAM for Service Function Chains in Networks
> Document date:  2020-05-20
> Group:          sfc
> Pages:          18
> URL:
> https://www.ietf.org/internet-drafts/draft-ietf-sfc-multi-layer-oam-05.txt
> Status:
> https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/
> Htmlized:
> https://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-05
> Htmlized:
> https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer-oam
> Diff:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-multi-layer-oam-05
>
> Abstract:
>    A set of requirements for active Operation, Administration and
>    Maintenance (OAM) of Service Function Chains (SFCs) in networks is
>    presented.  Based on these requirements an encapsulation of active
>    OAM message in SFC and a mechanism to detect and localize defects
>    described.  Also, this document updates RFC 8300 in the definition of
>    O (OAM) bit in the Network Service Header (NSH) and defines how the
>    active OAM message identified in SFC NSH.
>
>
>
>
> Please note that it may take a couple of minutes from the time of
> submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> The IETF Secretariat
>
>
> _______________________________________________
> sfc mailing list
> sfc@ietf.org
> https://www.ietf.org/mailman/listinfo/sfc
>


-- 

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--000000000000df487105b5ea1fcc
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr">Dear Greg &amp; Authors<div><br></div><di=
v>Please consider adding an improved security=C2=A0mechanism=C2=A0to=C2=A0p=
rotect the integrity of the SFC Echo Request/Reply function.=C2=A0</div><di=
v><br></div><div>This feature would be highly valuable to operators.</div><=
div><br></div><div>Thank you</div><div><br></div><div>Gyan</div></div><br><=
div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, May=
 20, 2020 at 10:51 PM Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.c=
om">gregimirsky@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmai=
l_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,20=
4,204);padding-left:1ex"><div dir=3D"ltr">Dear All,<div>this version includ=
es a minor update to the Security Considerations section.</div><div>We, the=
 authors, believe that the draft is ready for the WG LC. It defines an esse=
ntial function of SFC OAM - SFP Echo request/reply. Per our analysis, exist=
ing=C2=A0OAM mechanisms cannot support both SFP ping and SFP traceroute. Co=
nsider ICMP. When encapsulated=C2=A0in NSH, it supports the ping function b=
ut, per our analysis, cannot be used as an SFP tracing tool.</div><div>We m=
uch appreciate your comments and questions.</div><div><br></div><div>Dear J=
im and Joel,</div><div>please kindly consider the WG LC for this draft.</di=
v><div><br></div><div>Regards,</div><div>Greg</div><div><br><div class=3D"g=
mail_quote"><div dir=3D"ltr" class=3D"gmail_attr">---------- Forwarded mess=
age ---------<br>From: <span dir=3D"auto">&lt;<a href=3D"mailto:internet-dr=
afts@ietf.org" target=3D"_blank">internet-drafts@ietf.org</a>&gt;</span><br=
>Date: Wed, May 20, 2020 at 6:32 PM<br>Subject: New Version Notification fo=
r draft-ietf-sfc-multi-layer-oam-05.txt<br>To: Bhumip Khasnabish &lt;<a hre=
f=3D"mailto:vumip1@gmail.com" target=3D"_blank">vumip1@gmail.com</a>&gt;, C=
ui(Linda) Wang &lt;<a href=3D"mailto:lindawangjoy@gmail.com" target=3D"_bla=
nk">lindawangjoy@gmail.com</a>&gt;, Greg Mirsky &lt;<a href=3D"mailto:gregi=
mirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt;, Wei Meng=
 &lt;<a href=3D"mailto:meng.wei2@zte.com.cn" target=3D"_blank">meng.wei2@zt=
e.com.cn</a>&gt;<br></div><br><br><br>
A new version of I-D, draft-ietf-sfc-multi-layer-oam-05.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-sfc-multi-layer-oa=
m<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A005<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Active OAM for Service Function Ch=
ains in Networks<br>
Document date:=C2=A0 2020-05-20<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 sfc<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 18<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-ietf-sfc-multi-layer-oam-05.txt" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/internet-drafts/draft-ietf-sfc-mul=
ti-layer-oam-05.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ietf-sfc-multi-layer-oam/" rel=3D"noreferrer" target=3D"_bl=
ank">https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/</a><b=
r>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ietf-sfc-multi-layer-oam-05" rel=3D"noreferrer" target=3D"_blank">htt=
ps://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-05</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-sfc-multi-layer-oam" rel=3D"noreferrer" target=3D"_bla=
nk">https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer-oam</a=
><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ietf-sfc-multi-layer-oam-05" rel=3D"noreferrer" tar=
get=3D"_blank">https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-multi-lay=
er-oam-05</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0A set of requirements for active Operation, Administration and=
<br>
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in network=
s is<br>
=C2=A0 =C2=A0presented.=C2=A0 Based on these requirements an encapsulation =
of active<br>
=C2=A0 =C2=A0OAM message in SFC and a mechanism to detect and localize defe=
cts<br>
=C2=A0 =C2=A0described.=C2=A0 Also, this document updates RFC 8300 in the d=
efinition of<br>
=C2=A0 =C2=A0O (OAM) bit in the Network Service Header (NSH) and defines ho=
w the<br>
=C2=A0 =C2=A0active OAM message identified in SFC NSH.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
<br>
</div></div></div>
_______________________________________________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org" target=3D"_blank">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/listinfo/sfc</a><br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
 class=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"lt=
r"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div=
><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com/" style=
=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" target=3D=
"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz-logo-em=
ail" width=3D"81" height=3D"18" style=3D"height: 18px; width: 81px;"></a><b=
r></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NHG DS=
&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b></p=
><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font face=3D=
"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutions A=
</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=C2=
=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;col=
or:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Columbia=
 Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></div><=
/div></div></div></div></div></div></div></div>

--000000000000df487105b5ea1fcc--


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Tue, 8 Dec 2020 22:57:57 -0800
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To: Gyan Mishra <hayabusagsm@gmail.com>
Cc: Service Function Chaining IETF list <sfc@ietf.org>, sfc-chairs@ietf.org
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Subject: Re: [sfc] Fwd: New Version Notification for draft-ietf-sfc-multi-layer-oam-05.txt
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Hi Gyan,
thank you for your interest in the SFC OAM work and your thoughtful
suggestion. Indeed, every moving part we introduce in a network must
include a robust security mechanism. We'll work on a solution and hope to
share our proposal with you and the group soon.

Regards,
Greg

On Mon, Dec 7, 2020 at 5:47 PM Gyan Mishra <hayabusagsm@gmail.com> wrote:

> Dear Greg & Authors
>
> Please consider adding an improved security mechanism to protect the
> integrity of the SFC Echo Request/Reply function.
>
> This feature would be highly valuable to operators.
>
> Thank you
>
> Gyan
>
> On Wed, May 20, 2020 at 10:51 PM Greg Mirsky <gregimirsky@gmail.com>
> wrote:
>
>> Dear All,
>> this version includes a minor update to the Security Considerations
>> section.
>> We, the authors, believe that the draft is ready for the WG LC. It
>> defines an essential function of SFC OAM - SFP Echo request/reply. Per our
>> analysis, existing OAM mechanisms cannot support both SFP ping and SFP
>> traceroute. Consider ICMP. When encapsulated in NSH, it supports the ping
>> function but, per our analysis, cannot be used as an SFP tracing tool.
>> We much appreciate your comments and questions.
>>
>> Dear Jim and Joel,
>> please kindly consider the WG LC for this draft.
>>
>> Regards,
>> Greg
>>
>> ---------- Forwarded message ---------
>> From: <internet-drafts@ietf.org>
>> Date: Wed, May 20, 2020 at 6:32 PM
>> Subject: New Version Notification for
>> draft-ietf-sfc-multi-layer-oam-05.txt
>> To: Bhumip Khasnabish <vumip1@gmail.com>, Cui(Linda) Wang <
>> lindawangjoy@gmail.com>, Greg Mirsky <gregimirsky@gmail.com>, Wei Meng <
>> meng.wei2@zte.com.cn>
>>
>>
>>
>> A new version of I-D, draft-ietf-sfc-multi-layer-oam-05.txt
>> has been successfully submitted by Greg Mirsky and posted to the
>> IETF repository.
>>
>> Name:           draft-ietf-sfc-multi-layer-oam
>> Revision:       05
>> Title:          Active OAM for Service Function Chains in Networks
>> Document date:  2020-05-20
>> Group:          sfc
>> Pages:          18
>> URL:
>> https://www.ietf.org/internet-drafts/draft-ietf-sfc-multi-layer-oam-05.txt
>> Status:
>> https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/
>> Htmlized:
>> https://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-05
>> Htmlized:
>> https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer-oam
>> Diff:
>> https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-multi-layer-oam-05
>>
>> Abstract:
>>    A set of requirements for active Operation, Administration and
>>    Maintenance (OAM) of Service Function Chains (SFCs) in networks is
>>    presented.  Based on these requirements an encapsulation of active
>>    OAM message in SFC and a mechanism to detect and localize defects
>>    described.  Also, this document updates RFC 8300 in the definition of
>>    O (OAM) bit in the Network Service Header (NSH) and defines how the
>>    active OAM message identified in SFC NSH.
>>
>>
>>
>>
>> Please note that it may take a couple of minutes from the time of
>> submission
>> until the htmlized version and diff are available at tools.ietf.org.
>>
>> The IETF Secretariat
>>
>>
>> _______________________________________________
>> sfc mailing list
>> sfc@ietf.org
>> https://www.ietf.org/mailman/listinfo/sfc
>>
>
>
> --
>
> <http://www.verizon.com/>
>
> *Gyan Mishra*
>
> *Network Solutions A**rchitect *
>
>
>
> *M 301 502-134713101 Columbia Pike *Silver Spring, MD
>
>

--000000000000fd8f5805b60294f7
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Gyan,<br><div>thank you for your interest in the SFC OA=
M work and your thoughtful suggestion. Indeed, every moving part we introdu=
ce in a network must include a robust security mechanism. We&#39;ll work on=
 a solution and hope to share our proposal=C2=A0with you and the group soon=
.</div><div><br></div><div>Regards,</div><div>Greg</div></div><br><div clas=
s=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Dec 7, 2020=
 at 5:47 PM Gyan Mishra &lt;<a href=3D"mailto:hayabusagsm@gmail.com">hayabu=
sagsm@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pad=
ding-left:1ex"><div dir=3D"ltr"><div dir=3D"ltr">Dear Greg &amp; Authors<di=
v><br></div><div>Please consider adding an improved security=C2=A0mechanism=
=C2=A0to=C2=A0protect the integrity of the SFC Echo Request/Reply function.=
=C2=A0</div><div><br></div><div>This feature would be highly valuable to op=
erators.</div><div><br></div><div>Thank you</div><div><br></div><div>Gyan</=
div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_at=
tr">On Wed, May 20, 2020 at 10:51 PM Greg Mirsky &lt;<a href=3D"mailto:greg=
imirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt; wrote:<b=
r></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">=
Dear All,<div>this version includes a minor update to the Security Consider=
ations section.</div><div>We, the authors, believe that the draft is ready =
for the WG LC. It defines an essential function of SFC OAM - SFP Echo reque=
st/reply. Per our analysis, existing=C2=A0OAM mechanisms cannot support bot=
h SFP ping and SFP traceroute. Consider ICMP. When encapsulated=C2=A0in NSH=
, it supports the ping function but, per our analysis, cannot be used as an=
 SFP tracing tool.</div><div>We much appreciate your comments and questions=
.</div><div><br></div><div>Dear Jim and Joel,</div><div>please kindly consi=
der the WG LC for this draft.</div><div><br></div><div>Regards,</div><div>G=
reg</div><div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmai=
l_attr">---------- Forwarded message ---------<br>From: <span dir=3D"auto">=
&lt;<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blank">internet-=
drafts@ietf.org</a>&gt;</span><br>Date: Wed, May 20, 2020 at 6:32 PM<br>Sub=
ject: New Version Notification for draft-ietf-sfc-multi-layer-oam-05.txt<br=
>To: Bhumip Khasnabish &lt;<a href=3D"mailto:vumip1@gmail.com" target=3D"_b=
lank">vumip1@gmail.com</a>&gt;, Cui(Linda) Wang &lt;<a href=3D"mailto:linda=
wangjoy@gmail.com" target=3D"_blank">lindawangjoy@gmail.com</a>&gt;, Greg M=
irsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregim=
irsky@gmail.com</a>&gt;, Wei Meng &lt;<a href=3D"mailto:meng.wei2@zte.com.c=
n" target=3D"_blank">meng.wei2@zte.com.cn</a>&gt;<br></div><br><br><br>
A new version of I-D, draft-ietf-sfc-multi-layer-oam-05.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-sfc-multi-layer-oa=
m<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A005<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Active OAM for Service Function Ch=
ains in Networks<br>
Document date:=C2=A0 2020-05-20<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 sfc<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 18<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-ietf-sfc-multi-layer-oam-05.txt" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/internet-drafts/draft-ietf-sfc-mul=
ti-layer-oam-05.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ietf-sfc-multi-layer-oam/" rel=3D"noreferrer" target=3D"_bl=
ank">https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/</a><b=
r>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ietf-sfc-multi-layer-oam-05" rel=3D"noreferrer" target=3D"_blank">htt=
ps://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-05</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-sfc-multi-layer-oam" rel=3D"noreferrer" target=3D"_bla=
nk">https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer-oam</a=
><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ietf-sfc-multi-layer-oam-05" rel=3D"noreferrer" tar=
get=3D"_blank">https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-multi-lay=
er-oam-05</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0A set of requirements for active Operation, Administration and=
<br>
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in network=
s is<br>
=C2=A0 =C2=A0presented.=C2=A0 Based on these requirements an encapsulation =
of active<br>
=C2=A0 =C2=A0OAM message in SFC and a mechanism to detect and localize defe=
cts<br>
=C2=A0 =C2=A0described.=C2=A0 Also, this document updates RFC 8300 in the d=
efinition of<br>
=C2=A0 =C2=A0O (OAM) bit in the Network Service Header (NSH) and defines ho=
w the<br>
=C2=A0 =C2=A0active OAM message identified in SFC NSH.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
<br>
</div></div></div>
_______________________________________________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org" target=3D"_blank">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/listinfo/sfc</a><br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div><p style=3D"color:rgb(34,=
34,34)"><a href=3D"http://www.verizon.com/" style=3D"color:rgb(17,85,204);p=
adding-bottom:1em;display:inline-block" target=3D"_blank"><img src=3D"http:=
//ss7.vzw.com/is/image/VerizonWireless/vz-logo-email" width=3D"81" height=
=3D"18" style=3D"height: 18px; width: 81px;"></a><br></p><p style=3D"font-s=
ize:1em;margin:0px;font-family:&quot;Verizon NHG DS&quot;,Arial,sans-serif;=
line-height:13px;color:black"><b>Gyan Mishra</b></p><p style=3D"color:rgb(3=
4,34,34);margin:0px;line-height:13px"><font face=3D"georgia, serif" style=
=3D"color:black;font-size:1em"><i>Network Solutions A</i></font><font color=
=3D"#000000" face=3D"georgia, serif"><i>rchitect=C2=A0</i></font></p><p sty=
le=3D"font-size:1em;margin:0px;line-height:13px;color:black"><i><font face=
=3D"georgia, serif">M 301 502-1347<br>13101 Columbia Pike=C2=A0<br></font><=
/i>Silver Spring, MD</p></div><div><br></div></div></div></div></div></div>=
</div></div></div></div>
</blockquote></div>

--000000000000fd8f5805b60294f7--


From nobody Thu Dec 10 06:42:03 2020
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Subject: [sfc] Benjamin Kaduk's No Objection on draft-ietf-sfc-serviceid-header-13: (with COMMENT)
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Benjamin Kaduk has entered the following ballot position for
draft-ietf-sfc-serviceid-header-13: No Objection

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https://datatracker.ietf.org/doc/draft-ietf-sfc-serviceid-header/



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

This is just an observation, since we don't seem to have talked about it
the first time around, but this document seems to leave a lot of details
up to the deployment (or implementation?); I wonder how much thought
went into targeting Proposed Standard vs Informational.


Section 3

   per-subscriber policies.  The assessment whether a method for
   defining a subscriber identifier provides the required functionality
   and that it is compliant with SFs capabilities with the intended
   performance levels is deployment specific.

Some nits here; I propose

NEW:
The assessment of whether a method for defining a subscriber identifier
provides the required functionality and whether it is compatible with the
capabilities of the SFs to the intended performance level, is deployment
specific.

   if the NSH-aware SF is instructed to do so.  For example, an SF that
   expects a subscriber identifier generated from an internal IP address
   will discard Subscriber Identifier Context Headers conveying
   identifiers generated from Mobile Subscriber ISDN Number (MSISDN),
   International Mobile Subscriber Identity (IMSI), or malformed IP
   addresses.

It feels a bit odd for a PS document to talk about various types of
identifier like this when any type indicator would be part of the
internal site-specific structure of the opaque data.

Section 4

   The Performance Policy Identifier allows for the distributed
   enforcement of a per-service policy such as a service function path
   to only include specific SFs instances (e.g., SFs located within the
   same DC or those that are exposing the shortest delay from an SFF).

nit: there looks to be a grammar issue here; adding "requiring" before
"a service function path to only include" would probably fix it, but
there are many other options.

   The default behavior of intermediary NSH-aware nodes have to preserve
   such Context Headers (i.e., the information can be passed to next hop
   NSH-aware nodes), but local policy may require an intermediary NSH-
   aware node to strip one after processing it.

Please align the wording here with the (quite well done) version in
the previous section (e.g., s/have to preserve/is to preserve/).

   Nodes that are involved in an SFC-enabled domain are assumed to be
   trusted (Section 1.1 of [RFC8300]).  Means to check that only
   authorized nodes are solicited when a packet is crossing an SFC-
   enabled domain are out of scope of this document.

Sorry for repeating this from my earlier comments, but I would suggest
to s/solicited/traversed/ here.

                                                                If
   encryption is not enabled, the use of non persistent identifiers as
   well as the removal of the Subscriber Identifier Context Headers from
   the NSH by the last SF making use of such headers soften this issue
   (see "data minimization" discussed in Section 3 of [RFC8165]).

I would double-check the location of the "if encryption is not enabled"
clause, here -- use of encryption would be a different partial
mitigation, but the indicated concerns could still apply in an encrypted
setting, just in a different way (depending on which nodes had access to
the decrypted results, etc.).

   If no secure transport encapsulation is enabled, the use of trivial
   subscriber identifier structures together with the presence of
   specific SFs in a service function chain may reveal sensitive
   information to every on-path device (but also to teams managing these
   devices).  [...]

I would suggest promoting the parenthetical to a full clause (offset by
a comma) and to s/but/and/; the consideration seems of similar import to
the exposure to devices.




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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Thu, 10 Dec 2020 14:37:47 -0800
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To: Gyan Mishra <hayabusagsm@gmail.com>
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Subject: Re: [sfc] Fwd: New Version Notification for draft-ietf-sfc-multi-layer-oam-05.txt
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--000000000000e8d44305b623d3a1
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--000000000000e8d44005b623d39f
Content-Type: text/plain; charset="UTF-8"

Hi Gyan,
thank you for a great suggestion. We've taken a fresh look at the draft and
two related documents, SFC Consistency OAM and SFC Echo Reply Return Path,
from the security point of view. We propose to add a new Authentication TLV
in the draft-ietf-sfc-multi-layer-oam (see attached diff and the new
working version). Also, the new TLV can be used to authenticate the SFC
Reply TLV and SFF Information Record TLV (we're preparing updates of these
drafts).
Authors welcome reviews of the proposed changes to the WG document. We
greatly appreciate your comments, questions, and suggestions.

Regards,
Greg

On Mon, Dec 7, 2020 at 5:47 PM Gyan Mishra <hayabusagsm@gmail.com> wrote:

> Dear Greg & Authors
>
> Please consider adding an improved security mechanism to protect the
> integrity of the SFC Echo Request/Reply function.
>
> This feature would be highly valuable to operators.
>
> Thank you
>
> Gyan
>
> On Wed, May 20, 2020 at 10:51 PM Greg Mirsky <gregimirsky@gmail.com>
> wrote:
>
>> Dear All,
>> this version includes a minor update to the Security Considerations
>> section.
>> We, the authors, believe that the draft is ready for the WG LC. It
>> defines an essential function of SFC OAM - SFP Echo request/reply. Per our
>> analysis, existing OAM mechanisms cannot support both SFP ping and SFP
>> traceroute. Consider ICMP. When encapsulated in NSH, it supports the ping
>> function but, per our analysis, cannot be used as an SFP tracing tool.
>> We much appreciate your comments and questions.
>>
>> Dear Jim and Joel,
>> please kindly consider the WG LC for this draft.
>>
>> Regards,
>> Greg
>>
>> ---------- Forwarded message ---------
>> From: <internet-drafts@ietf.org>
>> Date: Wed, May 20, 2020 at 6:32 PM
>> Subject: New Version Notification for
>> draft-ietf-sfc-multi-layer-oam-05.txt
>> To: Bhumip Khasnabish <vumip1@gmail.com>, Cui(Linda) Wang <
>> lindawangjoy@gmail.com>, Greg Mirsky <gregimirsky@gmail.com>, Wei Meng <
>> meng.wei2@zte.com.cn>
>>
>>
>>
>> A new version of I-D, draft-ietf-sfc-multi-layer-oam-05.txt
>> has been successfully submitted by Greg Mirsky and posted to the
>> IETF repository.
>>
>> Name:           draft-ietf-sfc-multi-layer-oam
>> Revision:       05
>> Title:          Active OAM for Service Function Chains in Networks
>> Document date:  2020-05-20
>> Group:          sfc
>> Pages:          18
>> URL:
>> https://www.ietf.org/internet-drafts/draft-ietf-sfc-multi-layer-oam-05.txt
>> Status:
>> https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/
>> Htmlized:
>> https://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-05
>> Htmlized:
>> https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer-oam
>> Diff:
>> https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-multi-layer-oam-05
>>
>> Abstract:
>>    A set of requirements for active Operation, Administration and
>>    Maintenance (OAM) of Service Function Chains (SFCs) in networks is
>>    presented.  Based on these requirements an encapsulation of active
>>    OAM message in SFC and a mechanism to detect and localize defects
>>    described.  Also, this document updates RFC 8300 in the definition of
>>    O (OAM) bit in the Network Service Header (NSH) and defines how the
>>    active OAM message identified in SFC NSH.
>>
>>
>>
>>
>> Please note that it may take a couple of minutes from the time of
>> submission
>> until the htmlized version and diff are available at tools.ietf.org.
>>
>> The IETF Secretariat
>>
>>
>> _______________________________________________
>> sfc mailing list
>> sfc@ietf.org
>> https://www.ietf.org/mailman/listinfo/sfc
>>
>
>
> --
>
> <http://www.verizon.com/>
>
> *Gyan Mishra*
>
> *Network Solutions A**rchitect *
>
>
>
> *M 301 502-134713101 Columbia Pike *Silver Spring, MD
>
>

--000000000000e8d44005b623d39f
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Gyan,<br><div>thank you for a great suggestion. We&#39;=
ve taken a fresh look at the draft and two related documents, SFC Consisten=
cy OAM and SFC Echo Reply Return Path, from the security point of view. We =
propose to add a new Authentication TLV in the draft-ietf-sfc-multi-layer-o=
am (see attached diff and the new working version). Also, the new TLV can b=
e used to authenticate the SFC Reply TLV and SFF Information Record TLV (we=
&#39;re preparing updates of these drafts).</div><div>Authors welcome revie=
ws of the proposed changes to the WG document. We greatly appreciate your c=
omments, questions, and suggestions.</div><div><br></div><div>Regards,</div=
><div>Greg</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Mon, Dec 7, 2020 at 5:47 PM Gyan Mishra &lt;<a href=3D"m=
ailto:hayabusagsm@gmail.com">hayabusagsm@gmail.com</a>&gt; wrote:<br></div>=
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div dir=
=3D"ltr">Dear Greg &amp; Authors<div><br></div><div>Please consider adding =
an improved security=C2=A0mechanism=C2=A0to=C2=A0protect the integrity of t=
he SFC Echo Request/Reply function.=C2=A0</div><div><br></div><div>This fea=
ture would be highly valuable to operators.</div><div><br></div><div>Thank =
you</div><div><br></div><div>Gyan</div></div><br><div class=3D"gmail_quote"=
><div dir=3D"ltr" class=3D"gmail_attr">On Wed, May 20, 2020 at 10:51 PM Gre=
g Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gre=
gimirsky@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote=
" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);=
padding-left:1ex"><div dir=3D"ltr">Dear All,<div>this version includes a mi=
nor update to the Security Considerations section.</div><div>We, the author=
s, believe that the draft is ready for the WG LC. It defines an essential f=
unction of SFC OAM - SFP Echo request/reply. Per our analysis, existing=C2=
=A0OAM mechanisms cannot support both SFP ping and SFP traceroute. Consider=
 ICMP. When encapsulated=C2=A0in NSH, it supports the ping function but, pe=
r our analysis, cannot be used as an SFP tracing tool.</div><div>We much ap=
preciate your comments and questions.</div><div><br></div><div>Dear Jim and=
 Joel,</div><div>please kindly consider the WG LC for this draft.</div><div=
><br></div><div>Regards,</div><div>Greg</div><div><br><div class=3D"gmail_q=
uote"><div dir=3D"ltr" class=3D"gmail_attr">---------- Forwarded message --=
-------<br>From: <span dir=3D"auto">&lt;<a href=3D"mailto:internet-drafts@i=
etf.org" target=3D"_blank">internet-drafts@ietf.org</a>&gt;</span><br>Date:=
 Wed, May 20, 2020 at 6:32 PM<br>Subject: New Version Notification for draf=
t-ietf-sfc-multi-layer-oam-05.txt<br>To: Bhumip Khasnabish &lt;<a href=3D"m=
ailto:vumip1@gmail.com" target=3D"_blank">vumip1@gmail.com</a>&gt;, Cui(Lin=
da) Wang &lt;<a href=3D"mailto:lindawangjoy@gmail.com" target=3D"_blank">li=
ndawangjoy@gmail.com</a>&gt;, Greg Mirsky &lt;<a href=3D"mailto:gregimirsky=
@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt;, Wei Meng &lt;<=
a href=3D"mailto:meng.wei2@zte.com.cn" target=3D"_blank">meng.wei2@zte.com.=
cn</a>&gt;<br></div><br><br><br>
A new version of I-D, draft-ietf-sfc-multi-layer-oam-05.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-sfc-multi-layer-oa=
m<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A005<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Active OAM for Service Function Ch=
ains in Networks<br>
Document date:=C2=A0 2020-05-20<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 sfc<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 18<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-ietf-sfc-multi-layer-oam-05.txt" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/internet-drafts/draft-ietf-sfc-mul=
ti-layer-oam-05.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ietf-sfc-multi-layer-oam/" rel=3D"noreferrer" target=3D"_bl=
ank">https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/</a><b=
r>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ietf-sfc-multi-layer-oam-05" rel=3D"noreferrer" target=3D"_blank">htt=
ps://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-05</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-sfc-multi-layer-oam" rel=3D"noreferrer" target=3D"_bla=
nk">https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer-oam</a=
><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ietf-sfc-multi-layer-oam-05" rel=3D"noreferrer" tar=
get=3D"_blank">https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-multi-lay=
er-oam-05</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0A set of requirements for active Operation, Administration and=
<br>
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in network=
s is<br>
=C2=A0 =C2=A0presented.=C2=A0 Based on these requirements an encapsulation =
of active<br>
=C2=A0 =C2=A0OAM message in SFC and a mechanism to detect and localize defe=
cts<br>
=C2=A0 =C2=A0described.=C2=A0 Also, this document updates RFC 8300 in the d=
efinition of<br>
=C2=A0 =C2=A0O (OAM) bit in the Network Service Header (NSH) and defines ho=
w the<br>
=C2=A0 =C2=A0active OAM message identified in SFC NSH.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
<br>
</div></div></div>
_______________________________________________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org" target=3D"_blank">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/listinfo/sfc</a><br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div><p style=3D"color:rgb(34,=
34,34)"><a href=3D"http://www.verizon.com/" style=3D"color:rgb(17,85,204);p=
adding-bottom:1em;display:inline-block" target=3D"_blank"><img src=3D"http:=
//ss7.vzw.com/is/image/VerizonWireless/vz-logo-email" width=3D"81" height=
=3D"18" style=3D"height: 18px; width: 81px;"></a><br></p><p style=3D"font-s=
ize:1em;margin:0px;font-family:&quot;Verizon NHG DS&quot;,Arial,sans-serif;=
line-height:13px;color:black"><b>Gyan Mishra</b></p><p style=3D"color:rgb(3=
4,34,34);margin:0px;line-height:13px"><font face=3D"georgia, serif" style=
=3D"color:black;font-size:1em"><i>Network Solutions A</i></font><font color=
=3D"#000000" face=3D"georgia, serif"><i>rchitect=C2=A0</i></font></p><p sty=
le=3D"font-size:1em;margin:0px;line-height:13px;color:black"><i><font face=
=3D"georgia, serif">M 301 502-1347<br>13101 Columbia Pike=C2=A0<br></font><=
/i>Silver Spring, MD</p></div><div><br></div></div></div></div></div></div>=
</div></div></div></div>
</blockquote></div>

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From: <mohamed.boucadair@orange.com>
To: Benjamin Kaduk <kaduk@mit.edu>, The IESG <iesg@ietf.org>
CC: "draft-ietf-sfc-serviceid-header@ietf.org" <draft-ietf-sfc-serviceid-header@ietf.org>, "sfc-chairs@ietf.org" <sfc-chairs@ietf.org>, "sfc@ietf.org" <sfc@ietf.org>, Greg Mirsky <gregimirsky@gmail.com>
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Subject: Re: [sfc] Benjamin Kaduk's No Objection on draft-ietf-sfc-serviceid-header-13: (with COMMENT)
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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Fri, 11 Dec 2020 01:20:02 -0500
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To: Greg Mirsky <gregimirsky@gmail.com>
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Subject: Re: [sfc] Fwd: New Version Notification for draft-ietf-sfc-multi-layer-oam-05.txt
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Hi Greg

That is good news that you are looking at related drafts SFC consistency
OAM and SFC Echo Reply Return path from security POV.

I reviewed the security update diff you attached for multi layer oam draft
and I don=E2=80=99t see any issues.

Thanks

Gyan

On Thu, Dec 10, 2020 at 5:38 PM Greg Mirsky <gregimirsky@gmail.com> wrote:

> Hi Gyan,
> thank you for a great suggestion. We've taken a fresh look at the draft
> and two related documents, SFC Consistency OAM and SFC Echo Reply Return
> Path, from the security point of view. We propose to add a new
> Authentication TLV in the draft-ietf-sfc-multi-layer-oam (see attached di=
ff
> and the new working version). Also, the new TLV can be used to authentica=
te
> the SFC Reply TLV and SFF Information Record TLV (we're preparing updates
> of these drafts).
> Authors welcome reviews of the proposed changes to the WG document. We
> greatly appreciate your comments, questions, and suggestions.
>
> Regards,
> Greg
>
> On Mon, Dec 7, 2020 at 5:47 PM Gyan Mishra <hayabusagsm@gmail.com> wrote:
>
>> Dear Greg & Authors
>>
>> Please consider adding an improved security mechanism to protect the
>> integrity of the SFC Echo Request/Reply function.
>>
>> This feature would be highly valuable to operators.
>>
>> Thank you
>>
>> Gyan
>>
>> On Wed, May 20, 2020 at 10:51 PM Greg Mirsky <gregimirsky@gmail.com>
>> wrote:
>>
>>> Dear All,
>>> this version includes a minor update to the Security Considerations
>>> section.
>>> We, the authors, believe that the draft is ready for the WG LC. It
>>> defines an essential function of SFC OAM - SFP Echo request/reply. Per =
our
>>> analysis, existing OAM mechanisms cannot support both SFP ping and SFP
>>> traceroute. Consider ICMP. When encapsulated in NSH, it supports the pi=
ng
>>> function but, per our analysis, cannot be used as an SFP tracing tool.
>>> We much appreciate your comments and questions.
>>>
>>> Dear Jim and Joel,
>>> please kindly consider the WG LC for this draft.
>>>
>>> Regards,
>>> Greg
>>>
>>> ---------- Forwarded message ---------
>>> From: <internet-drafts@ietf.org>
>>> Date: Wed, May 20, 2020 at 6:32 PM
>>> Subject: New Version Notification for
>>> draft-ietf-sfc-multi-layer-oam-05.txt
>>> To: Bhumip Khasnabish <vumip1@gmail.com>, Cui(Linda) Wang <
>>> lindawangjoy@gmail.com>, Greg Mirsky <gregimirsky@gmail.com>, Wei Meng =
<
>>> meng.wei2@zte.com.cn>
>>>
>>>
>>>
>>> A new version of I-D, draft-ietf-sfc-multi-layer-oam-05.txt
>>> has been successfully submitted by Greg Mirsky and posted to the
>>> IETF repository.
>>>
>>> Name:           draft-ietf-sfc-multi-layer-oam
>>> Revision:       05
>>> Title:          Active OAM for Service Function Chains in Networks
>>> Document date:  2020-05-20
>>> Group:          sfc
>>> Pages:          18
>>> URL:
>>> https://www.ietf.org/internet-drafts/draft-ietf-sfc-multi-layer-oam-05.=
txt
>>> Status:
>>> https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/
>>> Htmlized:
>>> https://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-05
>>> Htmlized:
>>> https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer-oam
>>> Diff:
>>> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-multi-layer-oam-05
>>>
>>> Abstract:
>>>    A set of requirements for active Operation, Administration and
>>>    Maintenance (OAM) of Service Function Chains (SFCs) in networks is
>>>    presented.  Based on these requirements an encapsulation of active
>>>    OAM message in SFC and a mechanism to detect and localize defects
>>>    described.  Also, this document updates RFC 8300 in the definition o=
f
>>>    O (OAM) bit in the Network Service Header (NSH) and defines how the
>>>    active OAM message identified in SFC NSH.
>>>
>>>
>>>
>>>
>>> Please note that it may take a couple of minutes from the time of
>>> submission
>>> until the htmlized version and diff are available at tools.ietf.org.
>>>
>>> The IETF Secretariat
>>>
>>>
>>> _______________________________________________
>>> sfc mailing list
>>> sfc@ietf.org
>>> https://www.ietf.org/mailman/listinfo/sfc
>>>
>>
>>
>> --
>>
>> <http://www.verizon.com/>
>>
>> *Gyan Mishra*
>>
>> *Network Solutions A**rchitect *
>>
>>
>>
>> *M 301 502-134713101 Columbia Pike
>> <https://www.google.com/maps/search/13101+Columbia+Pike%C2%A0+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>*Silver
>> Spring, MD
>> <https://www.google.com/maps/search/13101+Columbia+Pike%C2%A0+Silver+Spr=
ing,+MD?entry=3Dgmail&source=3Dg>
>>
>> --

<http://www.verizon.com/>

*Gyan Mishra*

*Network Solutions A**rchitect *



*M 301 502-134713101 Columbia Pike *Silver Spring, MD

--000000000000fe074905b62a48e1
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"auto">Hi Greg=C2=A0</div><div dir=3D"auto"><br></div><div dir=
=3D"auto">That is good news that you are looking at related drafts SFC cons=
istency OAM and SFC Echo Reply Return path from security POV.</div><div dir=
=3D"auto"><br></div><div dir=3D"auto">I reviewed the security update diff y=
ou attached for multi layer oam draft and I don=E2=80=99t see any issues.</=
div><div dir=3D"auto"><br></div><div dir=3D"auto">Thanks=C2=A0</div><div di=
r=3D"auto"><br></div><div dir=3D"auto">Gyan</div><div><br><div class=3D"gma=
il_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Dec 10, 2020 at 5:3=
8 PM Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com">gregimirsky@g=
mail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D=
"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D=
"ltr">Hi Gyan,<br><div>thank you for a great suggestion. We&#39;ve taken a =
fresh look at the draft and two related documents, SFC Consistency OAM and =
SFC Echo Reply Return Path, from the security point of view. We propose to =
add a new Authentication TLV in the draft-ietf-sfc-multi-layer-oam (see att=
ached diff and the new working version). Also, the new TLV can be used to a=
uthenticate the SFC Reply TLV and SFF Information Record TLV (we&#39;re pre=
paring updates of these drafts).</div><div>Authors welcome reviews of the p=
roposed changes to the WG document. We greatly appreciate your comments, qu=
estions, and suggestions.</div><div><br></div><div>Regards,</div><div>Greg<=
/div></div><br><div class=3D"gmail_quote"></div><div class=3D"gmail_quote">=
<div dir=3D"ltr" class=3D"gmail_attr">On Mon, Dec 7, 2020 at 5:47 PM Gyan M=
ishra &lt;<a href=3D"mailto:hayabusagsm@gmail.com" target=3D"_blank">hayabu=
sagsm@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pad=
ding-left:1ex"><div dir=3D"ltr"><div dir=3D"ltr">Dear Greg &amp; Authors<di=
v><br></div><div>Please consider adding an improved security=C2=A0mechanism=
=C2=A0to=C2=A0protect the integrity of the SFC Echo Request/Reply function.=
=C2=A0</div><div><br></div><div>This feature would be highly valuable to op=
erators.</div><div><br></div><div>Thank you</div><div><br></div><div>Gyan</=
div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_at=
tr">On Wed, May 20, 2020 at 10:51 PM Greg Mirsky &lt;<a href=3D"mailto:greg=
imirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt; wrote:<b=
r></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">=
Dear All,<div>this version includes a minor update to the Security Consider=
ations section.</div><div>We, the authors, believe that the draft is ready =
for the WG LC. It defines an essential function of SFC OAM - SFP Echo reque=
st/reply. Per our analysis, existing=C2=A0OAM mechanisms cannot support bot=
h SFP ping and SFP traceroute. Consider ICMP. When encapsulated=C2=A0in NSH=
, it supports the ping function but, per our analysis, cannot be used as an=
 SFP tracing tool.</div><div>We much appreciate your comments and questions=
.</div><div><br></div><div>Dear Jim and Joel,</div><div>please kindly consi=
der the WG LC for this draft.</div><div><br></div><div>Regards,</div><div>G=
reg</div><div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmai=
l_attr">---------- Forwarded message ---------<br>From: <span dir=3D"auto">=
&lt;<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blank">internet-=
drafts@ietf.org</a>&gt;</span><br>Date: Wed, May 20, 2020 at 6:32 PM<br>Sub=
ject: New Version Notification for draft-ietf-sfc-multi-layer-oam-05.txt<br=
>To: Bhumip Khasnabish &lt;<a href=3D"mailto:vumip1@gmail.com" target=3D"_b=
lank">vumip1@gmail.com</a>&gt;, Cui(Linda) Wang &lt;<a href=3D"mailto:linda=
wangjoy@gmail.com" target=3D"_blank">lindawangjoy@gmail.com</a>&gt;, Greg M=
irsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregim=
irsky@gmail.com</a>&gt;, Wei Meng &lt;<a href=3D"mailto:meng.wei2@zte.com.c=
n" target=3D"_blank">meng.wei2@zte.com.cn</a>&gt;<br></div><br><br><br>
A new version of I-D, draft-ietf-sfc-multi-layer-oam-05.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ietf-sfc-multi-layer-oa=
m<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A005<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Active OAM for Service Function Ch=
ains in Networks<br>
Document date:=C2=A0 2020-05-20<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 sfc<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 18<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-ietf-sfc-multi-layer-oam-05.txt" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/internet-drafts/draft-ietf-sfc-mul=
ti-layer-oam-05.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ietf-sfc-multi-layer-oam/" rel=3D"noreferrer" target=3D"_bl=
ank">https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/</a><b=
r>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ietf-sfc-multi-layer-oam-05" rel=3D"noreferrer" target=3D"_blank">htt=
ps://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-05</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ietf-sfc-multi-layer-oam" rel=3D"noreferrer" target=3D"_bla=
nk">https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer-oam</a=
><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ietf-sfc-multi-layer-oam-05" rel=3D"noreferrer" tar=
get=3D"_blank">https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-multi-lay=
er-oam-05</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0A set of requirements for active Operation, Administration and=
<br>
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in network=
s is<br>
=C2=A0 =C2=A0presented.=C2=A0 Based on these requirements an encapsulation =
of active<br>
=C2=A0 =C2=A0OAM message in SFC and a mechanism to detect and localize defe=
cts<br>
=C2=A0 =C2=A0described.=C2=A0 Also, this document updates RFC 8300 in the d=
efinition of<br>
=C2=A0 =C2=A0O (OAM) bit in the Network Service Header (NSH) and defines ho=
w the<br>
=C2=A0 =C2=A0active OAM message identified in SFC NSH.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
<br>
</div></div></div>
_______________________________________________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org" target=3D"_blank">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/listinfo/sfc</a><br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div><p style=3D"color:rgb(34,=
34,34)"><a href=3D"http://www.verizon.com/" style=3D"color:rgb(17,85,204);p=
adding-bottom:1em;display:inline-block" target=3D"_blank"><img src=3D"http:=
//ss7.vzw.com/is/image/VerizonWireless/vz-logo-email" width=3D"81" height=
=3D"18" style=3D"height:18px;width:81px"></a><br></p><p style=3D"font-size:=
1em;margin:0px;font-family:&quot;Verizon NHG DS&quot;,Arial,sans-serif;line=
-height:13px;color:black"><b>Gyan Mishra</b></p><p style=3D"color:rgb(34,34=
,34);margin:0px;line-height:13px"><font face=3D"georgia, serif" style=3D"co=
lor:black;font-size:1em"><i>Network Solutions A</i></font><font color=3D"#0=
00000" face=3D"georgia, serif"><i>rchitect=C2=A0</i></font></p><p style=3D"=
font-size:1em;margin:0px;line-height:13px;color:black"><i><font face=3D"geo=
rgia, serif">M 301 502-1347<br><a href=3D"https://www.google.com/maps/searc=
h/13101+Columbia+Pike%C2%A0+Silver+Spring,+MD?entry=3Dgmail&amp;source=3Dg"=
>13101 Columbia Pike=C2=A0</a><br></font></i><a href=3D"https://www.google.=
com/maps/search/13101+Columbia+Pike%C2%A0+Silver+Spring,+MD?entry=3Dgmail&a=
mp;source=3Dg">Silver Spring, MD</a></p></div><div><br></div></div></div></=
div></div></div></div></div></div></div>
</blockquote></div>
</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div dir=3D"ltr"><div d=
ir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"l=
tr"><div><p style=3D"color:rgb(34,34,34)"><a href=3D"http://www.verizon.com=
/" style=3D"color:rgb(17,85,204);padding-bottom:1em;display:inline-block" t=
arget=3D"_blank"><img src=3D"http://ss7.vzw.com/is/image/VerizonWireless/vz=
-logo-email" width=3D"81" height=3D"18" style=3D"height:18px;width:81px"></=
a><br></p><p style=3D"font-size:1em;margin:0px;font-family:&quot;Verizon NH=
G DS&quot;,Arial,sans-serif;line-height:13px;color:black"><b>Gyan Mishra</b=
></p><p style=3D"color:rgb(34,34,34);margin:0px;line-height:13px"><font fac=
e=3D"georgia, serif" style=3D"color:black;font-size:1em"><i>Network Solutio=
ns A</i></font><font color=3D"#000000" face=3D"georgia, serif"><i>rchitect=
=C2=A0</i></font></p><p style=3D"font-size:1em;margin:0px;line-height:13px;=
color:black"><i><font face=3D"georgia, serif">M 301 502-1347<br>13101 Colum=
bia Pike=C2=A0<br></font></i>Silver Spring, MD</p></div><div><br></div></di=
v></div></div></div></div></div></div></div>

--000000000000fe074905b62a48e1--


From nobody Fri Dec 11 11:08:38 2020
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Subject: [sfc] I-D Action: draft-ietf-sfc-serviceid-header-14.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Service Function Chaining WG of the IETF.

        Title           : Service Function Chaining: Subscriber and Performance Policy Identification Variable-Length Network Service Header (NSH) Context Headers
        Authors         : Behcet Sarikaya
                          Dirk von Hugo
                          Mohamed Boucadair
	Filename        : draft-ietf-sfc-serviceid-header-14.txt
	Pages           : 13
	Date            : 2020-12-11

Abstract:
   This document defines two Variable-Length Context Headers that can be
   carried in the Network Service Header: the Subscriber and Performance
   Policy Identifiers.  These Context Headers are used to inform Service
   Functions of subscriber- and performance-related information for the
   sake of policy enforcement and appropriate service function chaining
   operations.  The structure of each Context Header, and their use and
   processing by NSH-aware nodes, are described.


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-sfc-serviceid-header-14
https://datatracker.ietf.org/doc/html/draft-ietf-sfc-serviceid-header-14

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-serviceid-header-14


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

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



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From: <Dirk.von-Hugo@telekom.de>
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Thread-Topic: Benjamin Kaduk's No Objection on draft-ietf-sfc-serviceid-header-13: (with COMMENT)
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Subject: Re: [sfc] Benjamin Kaduk's No Objection on draft-ietf-sfc-serviceid-header-13: (with COMMENT)
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
This draft is a work item of the Service Function Chaining WG of the IETF.

        Title           : Service Function Chaining: Subscriber and Perform=
ance Policy Identification Variable-Length Network Service Header (NSH) Con=
text Headers
        Authors         : Behcet Sarikaya
                          Dirk von Hugo
                          Mohamed Boucadair
	Filename        : draft-ietf-sfc-serviceid-header-14.txt
	Pages           : 13
	Date            : 2020-12-11

Abstract:
   This document defines two Variable-Length Context Headers that can be
   carried in the Network Service Header: the Subscriber and Performance
   Policy Identifiers.  These Context Headers are used to inform Service
   Functions of subscriber- and performance-related information for the
   sake of policy enforcement and appropriate service function chaining
   operations.  The structure of each Context Header, and their use and
   processing by NSH-aware nodes, are described.


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-sfc-serviceid-header-14
https://datatracker.ietf.org/doc/html/draft-ietf-sfc-serviceid-header-14

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-serviceid-header-14


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

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


_______________________________________________
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Subject: [sfc] I-D Action: draft-ietf-sfc-ioam-nsh-05.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Service Function Chaining WG of the IETF.

        Title           : Network Service Header (NSH) Encapsulation for In-situ OAM (IOAM) Data
        Authors         : Frank Brockners
                          Shwetha Bhandari
	Filename        : draft-ietf-sfc-ioam-nsh-05.txt
	Pages           : 9
	Date            : 2020-12-12

Abstract:
   In-situ Operations, Administration, and Maintenance (IOAM) records
   operational and telemetry information in the packet while the packet
   traverses a path between two points in the network.  This document
   outlines how IOAM data fields are encapsulated in the Network Service
   Header (NSH).


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-sfc-ioam-nsh-05
https://datatracker.ietf.org/doc/html/draft-ietf-sfc-ioam-nsh-05

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-ioam-nsh-05


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

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



From nobody Mon Dec 14 17:09:21 2020
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Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-07.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Service Function Chaining WG of the IETF.

        Title           : Active OAM for Service Function Chains in Networks
        Authors         : Greg Mirsky
                          Wei Meng
                          Bhumip Khasnabish
                          Cui Wang
	Filename        : draft-ietf-sfc-multi-layer-oam-07.txt
	Pages           : 22
	Date            : 2020-12-14

Abstract:
   A set of requirements for active Operation, Administration and
   Maintenance (OAM) of Service Function Chains (SFCs) in networks is
   presented.  Based on these requirements, an encapsulation of active
   OAM message in SFC and a mechanism to detect and localize defects
   described.  Also, this document updates RFC 8300 in the definition of
   O (OAM) bit in the Network Service Header (NSH) and defines how the
   active OAM message is identified in SFC NSH.


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-07
https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer-oam-07

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-multi-layer-oam-07


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

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



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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 14 Dec 2020 17:17:48 -0800
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To: Service Function Chaining IETF list <sfc@ietf.org>, sfc-chairs@ietf.org
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Subject: [sfc] Fwd:  I-D Action: draft-ietf-sfc-multi-layer-oam-07.txt
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Dear All,
in addition to a number of nits being fixed, updates in this version
include:

   - a change in the format of the TLV used in the SFC Echo Request/Reply.
   The shorter Type field seems not to affect extensibility but an additional
   one-octet-long filed can be used in some cases (one being the new
   Authentication TLV);
   - a new Authentication TLV that can be used to protect the base SFC Echo
   Request/Reply as well as any optional TLV.

Authors welcome your comments, questions, and suggestions.

Regards,
Greg

---------- Forwarded message ---------
From: <internet-drafts@ietf.org>
Date: Mon, Dec 14, 2020 at 5:10 PM
Subject: [sfc] I-D Action: draft-ietf-sfc-multi-layer-oam-07.txt
To: <i-d-announce@ietf.org>
Cc: <sfc@ietf.org>



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

        Title           : Active OAM for Service Function Chains in Networks
        Authors         : Greg Mirsky
                          Wei Meng
                          Bhumip Khasnabish
                          Cui Wang
        Filename        : draft-ietf-sfc-multi-layer-oam-07.txt
        Pages           : 22
        Date            : 2020-12-14

Abstract:
   A set of requirements for active Operation, Administration and
   Maintenance (OAM) of Service Function Chains (SFCs) in networks is
   presented.  Based on these requirements, an encapsulation of active
   OAM message in SFC and a mechanism to detect and localize defects
   described.  Also, this document updates RFC 8300 in the definition of
   O (OAM) bit in the Network Service Header (NSH) and defines how the
   active OAM message is identified in SFC NSH.


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-07
https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer-oam-07

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-sfc-multi-layer-oam-07


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/


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

--0000000000008938d005b6768700
Content-Type: text/html; charset="UTF-8"
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<div dir=3D"ltr">Dear All,<div>in addition to a number of nits being fixed,=
 updates=C2=A0in this version include:</div><div><ul><li>a change in the fo=
rmat of the TLV used in the SFC Echo Request/Reply. The shorter Type field =
seems not to affect extensibility but an additional one-octet-long filed ca=
n be used in some cases (one being the new Authentication TLV);</li><li>a n=
ew Authentication TLV that can be used to protect the base SFC Echo Request=
/Reply as well as any optional TLV.</li></ul><div>Authors welcome your comm=
ents, questions, and suggestions.</div><div><br></div><div>Regards,</div><d=
iv>Greg</div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail=
_attr">---------- Forwarded message ---------<br>From: <span dir=3D"auto">&=
lt;<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>=
&gt;</span><br>Date: Mon, Dec 14, 2020 at 5:10 PM<br>Subject: [sfc] I-D Act=
ion: draft-ietf-sfc-multi-layer-oam-07.txt<br>To:  &lt;<a href=3D"mailto:i-=
d-announce@ietf.org">i-d-announce@ietf.org</a>&gt;<br>Cc:  &lt;<a href=3D"m=
ailto:sfc@ietf.org">sfc@ietf.org</a>&gt;<br></div><br><br><br>
A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.<br>
This draft is a work item of the Service Function Chaining WG of the IETF.<=
br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 Active OAM for Service Function Chains in Networks<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Greg=
 Mirsky<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Wei Meng<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Bhumip Khasnabish<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Cui Wang<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet=
f-sfc-multi-layer-oam-07.txt<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 22<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 :=
 2020-12-14<br>
<br>
Abstract:<br>
=C2=A0 =C2=A0A set of requirements for active Operation, Administration and=
<br>
=C2=A0 =C2=A0Maintenance (OAM) of Service Function Chains (SFCs) in network=
s is<br>
=C2=A0 =C2=A0presented.=C2=A0 Based on these requirements, an encapsulation=
 of active<br>
=C2=A0 =C2=A0OAM message in SFC and a mechanism to detect and localize defe=
cts<br>
=C2=A0 =C2=A0described.=C2=A0 Also, this document updates RFC 8300 in the d=
efinition of<br>
=C2=A0 =C2=A0O (OAM) bit in the Network Service Header (NSH) and defines ho=
w the<br>
=C2=A0 =C2=A0active OAM message is identified in SFC NSH.<br>
<br>
<br>
The IETF datatracker status page for this draft is:<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-sfc-multi-layer-oam/=
" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc/dra=
ft-ietf-sfc-multi-layer-oam/</a><br>
<br>
There are also htmlized versions available at:<br>
<a href=3D"https://tools.ietf.org/html/draft-ietf-sfc-multi-layer-oam-07" r=
el=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/draft-ietf-=
sfc-multi-layer-oam-07</a><br>
<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-sfc-multi-layer=
-oam-07" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/=
doc/html/draft-ietf-sfc-multi-layer-oam-07</a><br>
<br>
A diff from the previous version is available at:<br>
<a href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-sfc-multi-layer-o=
am-07" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/rfcdiff?ur=
l2=3Ddraft-ietf-sfc-multi-layer-oam-07</a><br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
Internet-Drafts are also available by anonymous FTP at:<br>
<a href=3D"ftp://ftp.ietf.org/internet-drafts/" rel=3D"noreferrer" target=
=3D"_blank">ftp://ftp.ietf.org/internet-drafts/</a><br>
<br>
<br>
_______________________________________________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org" target=3D"_blank">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/listinfo/sfc</a><br>
</div></div></div>

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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 14 Dec 2020 19:19:51 -0800
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Dear All,
the authors are glad to welcome Gyan Mishra joining in the work on the
draft.
Also, the use of the new Authentication TLV is now described in the
document. The integrity of the Return Path TLV in the SFC Echo Reply can be
protected using the Authentication TLV.

We always welcome your comments, questions, and suggestions.
The authors believe that the document is ready for adoption by the SFC WG
and greatly appreciate your consideration.

Regards,
Greg (on behalf of the authors)

---------- Forwarded message ---------
From: <internet-drafts@ietf.org>
Date: Mon, Dec 14, 2020 at 7:06 PM
Subject: New Version Notification for
draft-ao-sfc-oam-return-path-specified-07.txt
To: Zhonghua Chen <18918588897@189.cn>, Greg Mirsky <gregimirsky@gmail.com>,
Gyan Mishra <gyan.s.mishra@verizon.com>, Ting Ao <18555817@qq.com>



A new version of I-D, draft-ao-sfc-oam-return-path-specified-07.txt
has been successfully submitted by Greg Mirsky and posted to the
IETF repository.

Name:           draft-ao-sfc-oam-return-path-specified
Revision:       07
Title:          Controlled Return Path for Service Function Chain (SFC) OAM
Document date:  2020-12-14
Group:          Individual Submission
Pages:          9
URL:
https://www.ietf.org/archive/id/draft-ao-sfc-oam-return-path-specified-07.txt
Status:
https://datatracker.ietf.org/doc/draft-ao-sfc-oam-return-path-specified/
Htmlized:
https://datatracker.ietf.org/doc/html/draft-ao-sfc-oam-return-path-specified
Htmlized:
https://tools.ietf.org/html/draft-ao-sfc-oam-return-path-specified-07
Diff:
https://www.ietf.org/rfcdiff?url2=draft-ao-sfc-oam-return-path-specified-07

Abstract:
   This document defines an extension to the Service Function Chain
   (SFC) Operation, Administration and Maintenance (OAM) that enables
   control of the Echo Reply return path directing it over a Reverse
   Service Function Path.  Enforcing the specific return path can be
   used to verify the bidirectional connectivity of SFC and increase the
   robustness of SFC OAM.




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

The IETF Secretariat

--000000000000f440b605b6783bf0
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Dear All,<div>the authors are glad to welcome Gyan Mishra =
joining in the work on the draft.</div><div>Also, the use of the new Authen=
tication TLV is now described in the document. The integrity of the Return =
Path TLV in the SFC Echo Reply can be protected using the Authentication TL=
V.</div><div><br></div><div>We always welcome your comments, questions, and=
 suggestions.</div><div>The authors believe that the document is ready for =
adoption by the SFC WG and greatly appreciate your consideration.</div><div=
><br></div><div>Regards,</div><div>Greg (on behalf of the authors)<br><br><=
div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">---------- =
Forwarded message ---------<br>From: <span dir=3D"auto">&lt;<a href=3D"mail=
to:internet-drafts@ietf.org">internet-drafts@ietf.org</a>&gt;</span><br>Dat=
e: Mon, Dec 14, 2020 at 7:06 PM<br>Subject: New Version Notification for dr=
aft-ao-sfc-oam-return-path-specified-07.txt<br>To: Zhonghua Chen &lt;<a hre=
f=3D"mailto:18918588897@189.cn">18918588897@189.cn</a>&gt;, Greg Mirsky &lt=
;<a href=3D"mailto:gregimirsky@gmail.com">gregimirsky@gmail.com</a>&gt;, Gy=
an Mishra &lt;<a href=3D"mailto:gyan.s.mishra@verizon.com">gyan.s.mishra@ve=
rizon.com</a>&gt;, Ting Ao &lt;<a href=3D"mailto:18555817@qq.com">18555817@=
qq.com</a>&gt;<br></div><br><br><br>
A new version of I-D, draft-ao-sfc-oam-return-path-specified-07.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ao-sfc-oam-return-path-=
specified<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A007<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Controlled Return Path for Service=
 Function Chain (SFC) OAM<br>
Document date:=C2=A0 2020-12-14<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Individual Submission<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 9<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/archive/id/draft-ao-sfc-oam-return-path-specified-07.txt" rel=3D"norefer=
rer" target=3D"_blank">https://www.ietf.org/archive/id/draft-ao-sfc-oam-ret=
urn-path-specified-07.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ao-sfc-oam-return-path-specified/" rel=3D"noreferrer" targe=
t=3D"_blank">https://datatracker.ietf.org/doc/draft-ao-sfc-oam-return-path-=
specified/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ao-sfc-oam-return-path-specified" rel=3D"noreferrer" target=
=3D"_blank">https://datatracker.ietf.org/doc/html/draft-ao-sfc-oam-return-p=
ath-specified</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ao-sfc-oam-return-path-specified-07" rel=3D"noreferrer" target=3D"_bl=
ank">https://tools.ietf.org/html/draft-ao-sfc-oam-return-path-specified-07<=
/a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ao-sfc-oam-return-path-specified-07" rel=3D"norefer=
rer" target=3D"_blank">https://www.ietf.org/rfcdiff?url2=3Ddraft-ao-sfc-oam=
-return-path-specified-07</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document defines an extension to the Service Function Cha=
in<br>
=C2=A0 =C2=A0(SFC) Operation, Administration and Maintenance (OAM) that ena=
bles<br>
=C2=A0 =C2=A0control of the Echo Reply return path directing it over a Reve=
rse<br>
=C2=A0 =C2=A0Service Function Path.=C2=A0 Enforcing the specific return pat=
h can be<br>
=C2=A0 =C2=A0used to verify the bidirectional connectivity of SFC and incre=
ase the<br>
=C2=A0 =C2=A0robustness of SFC OAM.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
<br>
</div></div></div>

--000000000000f440b605b6783bf0--


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 14 Dec 2020 19:28:15 -0800
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--00000000000004c1e505b6785ad1
Content-Type: text/plain; charset="UTF-8"

Dear All,
the authors are glad to welcome Gyan Mishra joining in the work on the
draft.
Also, the use of the new Authentication TLV is now described in the
document. The integrity of the SFF Information Record TLV in the SFC Echo
Reply can be protected using the Authentication TLV.

We always welcome your comments, questions, and suggestions.
The authors believe that the document is ready for adoption by the SFC WG
and greatly appreciate your consideration.

Regards,
Greg (on behalf of the authors)

---------- Forwarded message ---------
From: <internet-drafts@ietf.org>
Date: Mon, Dec 14, 2020 at 7:21 PM
Subject: New Version Notification for
draft-ao-sfc-oam-path-consistency-09.txt
To: Zhonghua Chen <18918588897@189.cn>, Greg Mirsky <gregimirsky@gmail.com>,
Kent Leung <kleung@cisco.com>, Ting Ao <18555817@qq.com>, Gyan Mishra <
gyan.s.mishra@verizon.com>



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

Name:           draft-ao-sfc-oam-path-consistency
Revision:       09
Title:          SFC OAM for path consistency
Document date:  2020-12-14
Group:          Individual Submission
Pages:          12
URL:
https://www.ietf.org/archive/id/draft-ao-sfc-oam-path-consistency-09.txt
Status:
https://datatracker.ietf.org/doc/draft-ao-sfc-oam-path-consistency/
Htmlized:
https://datatracker.ietf.org/doc/html/draft-ao-sfc-oam-path-consistency
Htmlized:
https://tools.ietf.org/html/draft-ao-sfc-oam-path-consistency-09
Diff:
https://www.ietf.org/rfcdiff?url2=draft-ao-sfc-oam-path-consistency-09

Abstract:
   Service Function Chain (SFC) defines an ordered set of service
   functions (SFs) to be applied to packets and/or frames and/or flows
   selected due to classification.  SFC Operation, Administration and
   Maintenance can monitor the continuity of the SFC, i.e., that all SFC
   elements are reachable to each other in the downstream direction.
   But SFC OAM must support verification that the order of traversing
   these SFs corresponds to the state defined by the SFC control plane
   or orchestrator, the metric referred to in this document as the path
   consistency of the SFC.  This document defines a new SFC active OAM
   method to support SFC consistency check, i.e., verification that all
   elements of the given SFC are being traversed in the expected order.




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

The IETF Secretariat

--00000000000004c1e505b6785ad1
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Dear All,<div>the authors are glad to welcome Gyan Mishra =
joining in the work on the draft.</div><div>Also, the use of the new Authen=
tication TLV is now described in the document. The integrity of the SFF Inf=
ormation Record TLV in the SFC Echo Reply can be protected using the Authen=
tication TLV.</div><div><br></div><div>We always welcome your comments, que=
stions, and suggestions.</div><div>The authors believe that the document is=
 ready for adoption by the SFC WG and greatly appreciate your consideration=
.</div><div><br></div><div>Regards,</div><div>Greg (on behalf of the author=
s)<br></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_=
attr">---------- Forwarded message ---------<br>From: <span dir=3D"auto">&l=
t;<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>&=
gt;</span><br>Date: Mon, Dec 14, 2020 at 7:21 PM<br>Subject: New Version No=
tification for draft-ao-sfc-oam-path-consistency-09.txt<br>To: Zhonghua Che=
n &lt;<a href=3D"mailto:18918588897@189.cn">18918588897@189.cn</a>&gt;, Gre=
g Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com">gregimirsky@gmail.com=
</a>&gt;, Kent Leung &lt;<a href=3D"mailto:kleung@cisco.com">kleung@cisco.c=
om</a>&gt;, Ting Ao &lt;<a href=3D"mailto:18555817@qq.com">18555817@qq.com<=
/a>&gt;, Gyan Mishra &lt;<a href=3D"mailto:gyan.s.mishra@verizon.com">gyan.=
s.mishra@verizon.com</a>&gt;<br></div><br><br><br>
A new version of I-D, draft-ao-sfc-oam-path-consistency-09.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ao-sfc-oam-path-consist=
ency<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A009<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 SFC OAM for path consistency<br>
Document date:=C2=A0 2020-12-14<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Individual Submission<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 12<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/archive/id/draft-ao-sfc-oam-path-consistency-09.txt" rel=3D"noreferrer" =
target=3D"_blank">https://www.ietf.org/archive/id/draft-ao-sfc-oam-path-con=
sistency-09.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ao-sfc-oam-path-consistency/" rel=3D"noreferrer" target=3D"=
_blank">https://datatracker.ietf.org/doc/draft-ao-sfc-oam-path-consistency/=
</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ao-sfc-oam-path-consistency" rel=3D"noreferrer" target=3D"_=
blank">https://datatracker.ietf.org/doc/html/draft-ao-sfc-oam-path-consiste=
ncy</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ao-sfc-oam-path-consistency-09" rel=3D"noreferrer" target=3D"_blank">=
https://tools.ietf.org/html/draft-ao-sfc-oam-path-consistency-09</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ao-sfc-oam-path-consistency-09" rel=3D"noreferrer" =
target=3D"_blank">https://www.ietf.org/rfcdiff?url2=3Ddraft-ao-sfc-oam-path=
-consistency-09</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0Service Function Chain (SFC) defines an ordered set of service=
<br>
=C2=A0 =C2=A0functions (SFs) to be applied to packets and/or frames and/or =
flows<br>
=C2=A0 =C2=A0selected due to classification.=C2=A0 SFC Operation, Administr=
ation and<br>
=C2=A0 =C2=A0Maintenance can monitor the continuity of the SFC, i.e., that =
all SFC<br>
=C2=A0 =C2=A0elements are reachable to each other in the downstream directi=
on.<br>
=C2=A0 =C2=A0But SFC OAM must support verification that the order of traver=
sing<br>
=C2=A0 =C2=A0these SFs corresponds to the state defined by the SFC control =
plane<br>
=C2=A0 =C2=A0or orchestrator, the metric referred to in this document as th=
e path<br>
=C2=A0 =C2=A0consistency of the SFC.=C2=A0 This document defines a new SFC =
active OAM<br>
=C2=A0 =C2=A0method to support SFC consistency check, i.e., verification th=
at all<br>
=C2=A0 =C2=A0elements of the given SFC are being traversed in the expected =
order.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
<br>
</div></div>

--00000000000004c1e505b6785ad1--


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 14 Dec 2020 19:48:37 -0800
Message-ID: <CA+RyBmUrK8ZM_gYOpK6OEKWdVrwcvDJ4f3kOaaRN8CWSuaXumQ@mail.gmail.com>
To: Service Function Chaining IETF list <sfc@ietf.org>, sfc-chairs@ietf.org
Content-Type: multipart/alternative; boundary="000000000000e5281c05b678a247"
Archived-At: <https://mailarchive.ietf.org/arch/msg/sfc/uqDmFwnw97Lf3ez2osGtFkJDsFY>
Subject: Re: [sfc] New Version Notification for draft-ao-sfc-oam-return-path-specified-07.txt
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--000000000000e5281c05b678a247
Content-Type: text/plain; charset="UTF-8"

Dear All,
I've made a mistake in describing the use of the Authentication TLV in this
draft. Of course, the Return Path TLV is included in the SFC Echo Request,
not Echo Reply. Sorry for the confusion I might have caused.

Regards,
Greg

On Mon, Dec 14, 2020 at 7:19 PM Greg Mirsky <gregimirsky@gmail.com> wrote:

> Dear All,
> the authors are glad to welcome Gyan Mishra joining in the work on the
> draft.
> Also, the use of the new Authentication TLV is now described in the
> document. The integrity of the Return Path TLV in the SFC Echo Reply can be
> protected using the Authentication TLV.
>
> We always welcome your comments, questions, and suggestions.
> The authors believe that the document is ready for adoption by the SFC WG
> and greatly appreciate your consideration.
>
> Regards,
> Greg (on behalf of the authors)
>
> ---------- Forwarded message ---------
> From: <internet-drafts@ietf.org>
> Date: Mon, Dec 14, 2020 at 7:06 PM
> Subject: New Version Notification for
> draft-ao-sfc-oam-return-path-specified-07.txt
> To: Zhonghua Chen <18918588897@189.cn>, Greg Mirsky <gregimirsky@gmail.com>,
> Gyan Mishra <gyan.s.mishra@verizon.com>, Ting Ao <18555817@qq.com>
>
>
>
> A new version of I-D, draft-ao-sfc-oam-return-path-specified-07.txt
> has been successfully submitted by Greg Mirsky and posted to the
> IETF repository.
>
> Name:           draft-ao-sfc-oam-return-path-specified
> Revision:       07
> Title:          Controlled Return Path for Service Function Chain (SFC) OAM
> Document date:  2020-12-14
> Group:          Individual Submission
> Pages:          9
> URL:
> https://www.ietf.org/archive/id/draft-ao-sfc-oam-return-path-specified-07.txt
> Status:
> https://datatracker.ietf.org/doc/draft-ao-sfc-oam-return-path-specified/
> Htmlized:
> https://datatracker.ietf.org/doc/html/draft-ao-sfc-oam-return-path-specified
> Htmlized:
> https://tools.ietf.org/html/draft-ao-sfc-oam-return-path-specified-07
> Diff:
> https://www.ietf.org/rfcdiff?url2=draft-ao-sfc-oam-return-path-specified-07
>
> Abstract:
>    This document defines an extension to the Service Function Chain
>    (SFC) Operation, Administration and Maintenance (OAM) that enables
>    control of the Echo Reply return path directing it over a Reverse
>    Service Function Path.  Enforcing the specific return path can be
>    used to verify the bidirectional connectivity of SFC and increase the
>    robustness of SFC OAM.
>
>
>
>
> Please note that it may take a couple of minutes from the time of
> submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> The IETF Secretariat
>
>
>

--000000000000e5281c05b678a247
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Dear All,<div>I&#39;ve made a mistake in describing the us=
e of the Authentication TLV in this draft. Of course, the Return Path TLV i=
s included in the SFC Echo Request, not Echo Reply. Sorry for the confusion=
 I might=C2=A0have caused.</div><div><br></div><div>Regards,</div><div>Greg=
</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_=
attr">On Mon, Dec 14, 2020 at 7:19 PM Greg Mirsky &lt;<a href=3D"mailto:gre=
gimirsky@gmail.com">gregimirsky@gmail.com</a>&gt; wrote:<br></div><blockquo=
te class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px =
solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">Dear All,<div>the=
 authors are glad to welcome Gyan Mishra joining in the work on the draft.<=
/div><div>Also, the use of the new Authentication TLV is now described in t=
he document. The integrity of the Return Path TLV in the SFC Echo Reply can=
 be protected using the Authentication TLV.</div><div><br></div><div>We alw=
ays welcome your comments, questions, and suggestions.</div><div>The author=
s believe that the document is ready for adoption by the SFC WG and greatly=
 appreciate your consideration.</div><div><br></div><div>Regards,</div><div=
>Greg (on behalf of the authors)<br><br><div class=3D"gmail_quote"><div dir=
=3D"ltr" class=3D"gmail_attr">---------- Forwarded message ---------<br>Fro=
m: <span dir=3D"auto">&lt;<a href=3D"mailto:internet-drafts@ietf.org" targe=
t=3D"_blank">internet-drafts@ietf.org</a>&gt;</span><br>Date: Mon, Dec 14, =
2020 at 7:06 PM<br>Subject: New Version Notification for draft-ao-sfc-oam-r=
eturn-path-specified-07.txt<br>To: Zhonghua Chen &lt;<a href=3D"mailto:1891=
8588897@189.cn" target=3D"_blank">18918588897@189.cn</a>&gt;, Greg Mirsky &=
lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@g=
mail.com</a>&gt;, Gyan Mishra &lt;<a href=3D"mailto:gyan.s.mishra@verizon.c=
om" target=3D"_blank">gyan.s.mishra@verizon.com</a>&gt;, Ting Ao &lt;<a hre=
f=3D"mailto:18555817@qq.com" target=3D"_blank">18555817@qq.com</a>&gt;<br><=
/div><br><br><br>
A new version of I-D, draft-ao-sfc-oam-return-path-specified-07.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-ao-sfc-oam-return-path-=
specified<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A007<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Controlled Return Path for Service=
 Function Chain (SFC) OAM<br>
Document date:=C2=A0 2020-12-14<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Individual Submission<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 9<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/archive/id/draft-ao-sfc-oam-return-path-specified-07.txt" rel=3D"norefer=
rer" target=3D"_blank">https://www.ietf.org/archive/id/draft-ao-sfc-oam-ret=
urn-path-specified-07.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-ao-sfc-oam-return-path-specified/" rel=3D"noreferrer" targe=
t=3D"_blank">https://datatracker.ietf.org/doc/draft-ao-sfc-oam-return-path-=
specified/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-ao-sfc-oam-return-path-specified" rel=3D"noreferrer" target=
=3D"_blank">https://datatracker.ietf.org/doc/html/draft-ao-sfc-oam-return-p=
ath-specified</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-ao-sfc-oam-return-path-specified-07" rel=3D"noreferrer" target=3D"_bl=
ank">https://tools.ietf.org/html/draft-ao-sfc-oam-return-path-specified-07<=
/a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-ao-sfc-oam-return-path-specified-07" rel=3D"norefer=
rer" target=3D"_blank">https://www.ietf.org/rfcdiff?url2=3Ddraft-ao-sfc-oam=
-return-path-specified-07</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document defines an extension to the Service Function Cha=
in<br>
=C2=A0 =C2=A0(SFC) Operation, Administration and Maintenance (OAM) that ena=
bles<br>
=C2=A0 =C2=A0control of the Echo Reply return path directing it over a Reve=
rse<br>
=C2=A0 =C2=A0Service Function Path.=C2=A0 Enforcing the specific return pat=
h can be<br>
=C2=A0 =C2=A0used to verify the bidirectional connectivity of SFC and incre=
ase the<br>
=C2=A0 =C2=A0robustness of SFC OAM.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
<br>
</div></div></div>
</blockquote></div>

--000000000000e5281c05b678a247--


From nobody Thu Dec 17 06:03:36 2020
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Cc: rfc-editor@rfc-editor.org, The IESG <iesg@ietf.org>, draft-ietf-sfc-serviceid-header@ietf.org, Greg Mirsky <gregimirsky@gmail.com>,  gregimirsky@gmail.com, martin.vigoureux@nokia.com, sfc@ietf.org, sfc-chairs@ietf.org
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Date: Thu, 17 Dec 2020 06:03:27 -0800
Archived-At: <https://mailarchive.ietf.org/arch/msg/sfc/cnSxI3rQF9RaLHXF92UQk8i1u_Q>
Subject: [sfc] Protocol Action: 'Service Function Chaining: Subscriber and Performance Policy Identification Variable-Length Network Service Header (NSH) Context Headers' to Proposed Standard (draft-ietf-sfc-serviceid-header-14.txt)
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The IESG has approved the following document:
- 'Service Function Chaining: Subscriber and Performance Policy
   Identification Variable-Length Network Service Header (NSH) Context
   Headers'
  (draft-ietf-sfc-serviceid-header-14.txt) as Proposed Standard

This document is the product of the Service Function Chaining Working Group.

The IESG contact persons are Alvaro Retana, Deborah Brungard and Martin
Vigoureux.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-sfc-serviceid-header/





Technical Summary

   This document defines Subscriber and Performance Policy Identifiers
   Network Service Header Variable-Length Context Headers to inform
   Service Functions about subscriber- and service-related information
   for the sake of policy enforcement and appropriate service function
   chaining operations.  The structure of each context header is
   defined; their use and processing instructions by SFC-aware nodes are
   explained.

Working Group Summary

The draft was first submitted in September 2015, has been reviewed by a reasonable 
number of people in the SFC working group, which is reflected in the Acknowledgment
section. Publication of the draft received a fair number of supporters
and no objections from the working group.

No IPR disclosures have been filed that reference this document at any time. All authors
have stated that none of them is aware of any IPR related to the draft.

The working group is solidly behind this document.

Document Quality

The current version of the draft is clear, seems to have resolved all the 
issues, and has the consensus of the working group.

Personnel

The Document Shepherd for this document is Greg Mirsky
The Responsible Area Director is Martin Vigoureux


From nobody Thu Dec 17 07:32:53 2020
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Subject: [sfc] Fwd: Protocol Action: 'Service Function Chaining: Subscriber and Performance Policy Identification Variable-Length Network Service Header (NSH) Context Headers' to Proposed Standard (draft-ietf-sfc-serviceid-header-14.txt)
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Congratulations to the WG and authors.
Specifically, appreciation to the authors for their attentive work with 
the IESG to get this done.

Yours,
Joel


-------- Forwarded Message --------
Subject: Protocol Action: 'Service Function Chaining: Subscriber and 
Performance Policy Identification Variable-Length Network Service Header 
(NSH) Context Headers' to Proposed Standard 
(draft-ietf-sfc-serviceid-header-14.txt)
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Date: Thu, 17 Dec 2020 06:03:27 -0800
From: The IESG <iesg-secretary@ietf.org>
To: IETF-Announce <ietf-announce@ietf.org>
CC: rfc-editor@rfc-editor.org, The IESG <iesg@ietf.org>, 
draft-ietf-sfc-serviceid-header@ietf.org, Greg Mirsky 
<gregimirsky@gmail.com>, gregimirsky@gmail.com, 
martin.vigoureux@nokia.com, sfc@ietf.org, sfc-chairs@ietf.org

The IESG has approved the following document:
- 'Service Function Chaining: Subscriber and Performance Policy
    Identification Variable-Length Network Service Header (NSH) Context
    Headers'
   (draft-ietf-sfc-serviceid-header-14.txt) as Proposed Standard

This document is the product of the Service Function Chaining Working Group.

The IESG contact persons are Alvaro Retana, Deborah Brungard and Martin
Vigoureux.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-sfc-serviceid-header/





Technical Summary

    This document defines Subscriber and Performance Policy Identifiers
    Network Service Header Variable-Length Context Headers to inform
    Service Functions about subscriber- and service-related information
    for the sake of policy enforcement and appropriate service function
    chaining operations.  The structure of each context header is
    defined; their use and processing instructions by SFC-aware nodes are
    explained.

Working Group Summary

The draft was first submitted in September 2015, has been reviewed by a 
reasonable number of people in the SFC working group, which is reflected 
in the Acknowledgment
section. Publication of the draft received a fair number of supporters
and no objections from the working group.

No IPR disclosures have been filed that reference this document at any 
time. All authors
have stated that none of them is aware of any IPR related to the draft.

The working group is solidly behind this document.

Document Quality

The current version of the draft is clear, seems to have resolved all 
the issues, and has the consensus of the working group.

Personnel

The Document Shepherd for this document is Greg Mirsky
The Responsible Area Director is Martin Vigoureux


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Subject: Re: [sfc] Fwd: Protocol Action: 'Service Function Chaining: Subscriber and Performance Policy Identification Variable-Length Network Service Header (NSH) Context Headers' to Proposed Standard (draft-ietf-sfc-serviceid-header-14.txt)
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From nobody Thu Dec 24 10:21:42 2020
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From: Steve Hanna via Datatracker <noreply@ietf.org>
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Subject: [sfc] Secdir early review of draft-ietf-sfc-nsh-integrity-01
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Reviewer: Steve Hanna
Review result: Has Issues

I have reviewed this document as part of the security directorate's ongoing
effort to review all IETF documents being processed by the IESG.  These
comments were written primarily for the benefit of the security area directors.
 Document editors and WG chairs should treat these comments just like any other
last call comments.

This document describes adds integrity and optional encryption of sensitive
metadata directly to the Network Service Header (NSH) protocol defined in RFC
8300, thus reducing or eliminating several attack vectors against Service
Function Chaining (SFC). The document is well written and seems adequate for
the goals articulated here and elsewhere in the SFC document suite. However, I
have some issues, questions, and nits.

Note that I have not previously worked with SFC. In the last few days, I have
read the documents on this document so I am fairly confident that I understand
the relevant security aspects.

ISSUES and QUESTIONS:
Why include a MUST in section 9.2? Isn't that already covered earlier (in the
last sentence of section 7.5)?

The Timestamp field is supposed to handle replay attacks. However, this permits
unlimited replays within the Delta interval. Is that acceptable?

What is the ? operator in section 7.4 supposed to connote? Subtraction seems
like a better choice.

Is the Timestamp field only set by the first imposer in the SFP or should it be
updated whenever an imposer changes the MAC? This should be documented
somewhere, maybe in section 7.4.

The threat model described in draft-arkko-farrell-arch-model-t-04 includes
compromised nodes. The security considerations section of this document should
describe how and to what extent compromised nodes are handled by the
protections provided by this document and what residual risks remain.

The Security Considerations section should explicitly acknowledge that
authentication is not provided by this method.

What does this statement mean?
        • If HMAC algorithm is used, IV length is set to zero.
Don't all the current algorithms use HMAC?

What is the expected behavior if these Context Headers are missing? The last
paragraph at the bottom of page 18 seems to be ambiguous on this topic, with
the first sentence saying that this "SHOULD be logged locally" while the last
sentence says that this "MUST cause that packet to be discarded". Probably this
is clear to the writer but not to this reader!

NITS:
At the top of page 6, "unecrypted" should be "unencrypted".

In the last line of page 18, "depend" should be "depending".

Just below Figure 9 on page 20, a comma is needed after "doing so".

In the second paragraph of section 7.5, "successfuly" should be spelled
"successfully".

At the end of the first paragraph of section 9, change the sentence from:
        • Also, that section indicates that metadata considerations that
        operators can take into account when using NSH are discussed in
        [RFC8165].
to
        • Also, that section indicates that [RFC8165] discusses metadata
        considerations that operators can take into account when using NSH.

The last sentence of the third paragraph of section 9 recommends that "the next
key identifier" be distributed long before the key is changed. This should say
"the next key identifier and associated keying material".

In the second paragraph of section 9.1, "domain be able" should be "domain
should be able".




From nobody Thu Dec 24 11:51:59 2020
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To: Steve Hanna <steve@hannas.com>, secdir@ietf.org
Cc: draft-ietf-sfc-nsh-integrity.all@ietf.org, sfc@ietf.org
References: <160883409674.11984.2680388131154961282@ietfa.amsl.com>
From: "Joel M. Halpern" <jmh@joelhalpern.com>
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Date: Thu, 24 Dec 2020 14:51:51 -0500
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Subject: Re: [sfc] Secdir early review of draft-ietf-sfc-nsh-integrity-01
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Thank you Steve.  I expect the authors will get back to you after the 
holidays (although they have impressed me with the rapidity of their 
responses in the past.)

Yours,
Joel

On 12/24/2020 1:21 PM, Steve Hanna via Datatracker wrote:
> Reviewer: Steve Hanna
> Review result: Has Issues
> 
> I have reviewed this document as part of the security directorate's ongoing
> effort to review all IETF documents being processed by the IESG.  These
> comments were written primarily for the benefit of the security area directors.
>   Document editors and WG chairs should treat these comments just like any other
> last call comments.
> 
> This document describes adds integrity and optional encryption of sensitive
> metadata directly to the Network Service Header (NSH) protocol defined in RFC
> 8300, thus reducing or eliminating several attack vectors against Service
> Function Chaining (SFC). The document is well written and seems adequate for
> the goals articulated here and elsewhere in the SFC document suite. However, I
> have some issues, questions, and nits.
> 
> Note that I have not previously worked with SFC. In the last few days, I have
> read the documents on this document so I am fairly confident that I understand
> the relevant security aspects.
> 
> ISSUES and QUESTIONS:
> Why include a MUST in section 9.2? Isn't that already covered earlier (in the
> last sentence of section 7.5)?
> 
> The Timestamp field is supposed to handle replay attacks. However, this permits
> unlimited replays within the Delta interval. Is that acceptable?
> 
> What is the ? operator in section 7.4 supposed to connote? Subtraction seems
> like a better choice.
> 
> Is the Timestamp field only set by the first imposer in the SFP or should it be
> updated whenever an imposer changes the MAC? This should be documented
> somewhere, maybe in section 7.4.
> 
> The threat model described in draft-arkko-farrell-arch-model-t-04 includes
> compromised nodes. The security considerations section of this document should
> describe how and to what extent compromised nodes are handled by the
> protections provided by this document and what residual risks remain.
> 
> The Security Considerations section should explicitly acknowledge that
> authentication is not provided by this method.
> 
> What does this statement mean?
>          • If HMAC algorithm is used, IV length is set to zero.
> Don't all the current algorithms use HMAC?
> 
> What is the expected behavior if these Context Headers are missing? The last
> paragraph at the bottom of page 18 seems to be ambiguous on this topic, with
> the first sentence saying that this "SHOULD be logged locally" while the last
> sentence says that this "MUST cause that packet to be discarded". Probably this
> is clear to the writer but not to this reader!
> 
> NITS:
> At the top of page 6, "unecrypted" should be "unencrypted".
> 
> In the last line of page 18, "depend" should be "depending".
> 
> Just below Figure 9 on page 20, a comma is needed after "doing so".
> 
> In the second paragraph of section 7.5, "successfuly" should be spelled
> "successfully".
> 
> At the end of the first paragraph of section 9, change the sentence from:
>          • Also, that section indicates that metadata considerations that
>          operators can take into account when using NSH are discussed in
>          [RFC8165].
> to
>          • Also, that section indicates that [RFC8165] discusses metadata
>          considerations that operators can take into account when using NSH.
> 
> The last sentence of the third paragraph of section 9 recommends that "the next
> key identifier" be distributed long before the key is changed. This should say
> "the next key identifier and associated keying material".
> 
> In the second paragraph of section 9.1, "domain be able" should be "domain
> should be able".
> 
> 
> 


From nobody Wed Dec 30 12:25:19 2020
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Subject: [sfc] I-D Action: draft-mirsky-sfc-pmamm-11.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Service Function Chaining WG of the IETF.

        Title           : Performance Measurement (PM) with Alternate Marking Method in Service Function Chaining (SFC) Domain
        Authors         : Greg Mirsky
                          Giuseppe Fioccola
                          Tal Mizrahi
	Filename        : draft-mirsky-sfc-pmamm-11.txt
	Pages           : 8
	Date            : 2020-12-30

Abstract:
   This document describes how the alternate marking method can be used
   as the efficient performance measurement method taking advantage of
   the actual data flows in a Service Function Chaining (SFC) domain.


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-11
https://datatracker.ietf.org/doc/html/draft-mirsky-sfc-pmamm-11

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-mirsky-sfc-pmamm-11


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 Wed Dec 30 12:35:48 2020
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Wed, 30 Dec 2020 12:35:32 -0800
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Subject: [sfc] Fwd:  I-D Action: draft-mirsky-sfc-pmamm-11.txt
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Dear All,
happy and healthy New Year to you all!

In this update, we've cleared a bunch of editorial nits. The document is
technically stable and the authors greatly appreciate the WG consideration
of adopting this work.

Regards,
Greg (on behalf of the authors)

---------- Forwarded message ---------
From: <internet-drafts@ietf.org>
Date: Wed, Dec 30, 2020 at 12:26 PM
Subject: [sfc] I-D Action: draft-mirsky-sfc-pmamm-11.txt
To: <i-d-announce@ietf.org>
Cc: <sfc@ietf.org>



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

        Title           : Performance Measurement (PM) with Alternate
Marking Method in Service Function Chaining (SFC) Domain
        Authors         : Greg Mirsky
                          Giuseppe Fioccola
                          Tal Mizrahi
        Filename        : draft-mirsky-sfc-pmamm-11.txt
        Pages           : 8
        Date            : 2020-12-30

Abstract:
   This document describes how the alternate marking method can be used
   as the efficient performance measurement method taking advantage of
   the actual data flows in a Service Function Chaining (SFC) domain.


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-11
https://datatracker.ietf.org/doc/html/draft-mirsky-sfc-pmamm-11

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-mirsky-sfc-pmamm-11


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/


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

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<div dir=3D"ltr">Dear All,<div>happy and healthy New Year to you all!</div>=
<div><br></div><div>In this update, we&#39;ve cleared a bunch of editorial =
nits. The document is technically stable and the authors greatly appreciate=
 the WG consideration of adopting this work.</div><div><br></div><div>Regar=
ds,</div><div>Greg (on behalf of the authors)<br><br><div class=3D"gmail_qu=
ote"><div dir=3D"ltr" class=3D"gmail_attr">---------- Forwarded message ---=
------<br>From: <span dir=3D"auto">&lt;<a href=3D"mailto:internet-drafts@ie=
tf.org">internet-drafts@ietf.org</a>&gt;</span><br>Date: Wed, Dec 30, 2020 =
at 12:26 PM<br>Subject: [sfc] I-D Action: draft-mirsky-sfc-pmamm-11.txt<br>=
To:  &lt;<a href=3D"mailto:i-d-announce@ietf.org">i-d-announce@ietf.org</a>=
&gt;<br>Cc:  &lt;<a href=3D"mailto:sfc@ietf.org">sfc@ietf.org</a>&gt;<br></=
div><br><br><br>
A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.<br>
This draft is a work item of the Service Function Chaining WG of the IETF.<=
br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 Performance Measurement (PM) with Alternate Marking Method in Service Func=
tion Chaining (SFC) Domain<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Greg=
 Mirsky<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Giuseppe Fioccola<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Tal Mizrahi<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-mir=
sky-sfc-pmamm-11.txt<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 8<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 :=
 2020-12-30<br>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes how the alternate marking method can b=
e used<br>
=C2=A0 =C2=A0as the efficient performance measurement method taking advanta=
ge of<br>
=C2=A0 =C2=A0the actual data flows in a Service Function Chaining (SFC) dom=
ain.<br>
<br>
<br>
The IETF datatracker status page for this draft is:<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-mirsky-sfc-pmamm/" rel=3D=
"noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc/draft-mirsk=
y-sfc-pmamm/</a><br>
<br>
There are also htmlized versions available at:<br>
<a href=3D"https://tools.ietf.org/html/draft-mirsky-sfc-pmamm-11" rel=3D"no=
referrer" target=3D"_blank">https://tools.ietf.org/html/draft-mirsky-sfc-pm=
amm-11</a><br>
<a href=3D"https://datatracker.ietf.org/doc/html/draft-mirsky-sfc-pmamm-11"=
 rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc/html=
/draft-mirsky-sfc-pmamm-11</a><br>
<br>
A diff from the previous version is available at:<br>
<a href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraft-mirsky-sfc-pmamm-11" r=
el=3D"noreferrer" target=3D"_blank">https://www.ietf.org/rfcdiff?url2=3Ddra=
ft-mirsky-sfc-pmamm-11</a><br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
Internet-Drafts are also available by anonymous FTP at:<br>
<a href=3D"ftp://ftp.ietf.org/internet-drafts/" rel=3D"noreferrer" target=
=3D"_blank">ftp://ftp.ietf.org/internet-drafts/</a><br>
<br>
<br>
_______________________________________________<br>
sfc mailing list<br>
<a href=3D"mailto:sfc@ietf.org" target=3D"_blank">sfc@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sfc" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/listinfo/sfc</a><br>
</div></div></div>

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