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Subject: I-D Action: draft-ietf-bfd-vxlan-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 Bidirectional Forwarding Detection WG of the IETF.

        Title           : BFD for VXLAN
        Authors         : Santosh Pallagatti
                          Sudarsan Paragiri
                          Vengada Prasad Govindan
                          Mallik Mudigonda
                          Greg Mirsky
	Filename        : draft-ietf-bfd-vxlan-11.txt
	Pages           : 11
	Date            : 2020-05-04

Abstract:
   This document describes the use of the Bidirectional Forwarding
   Detection (BFD) protocol in point-to-point Virtual eXtensible Local
   Area Network (VXLAN) tunnels used to form an overlay network.


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

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

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-vxlan-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 Mon May  4 15:58:41 2020
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 4 May 2020 15:58:23 -0700
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Subject: Fwd: New Version Notification for draft-ietf-bfd-vxlan-11.txt
To: rtg-bfd WG <rtg-bfd@ietf.org>, bfd-chairs@ietf.org
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Dear All,
my apologies for holding off this upload. The update is to address a
set of comments related to the use of destination Ethernet MAC in the
inner Ethernet frame that encapsulates a BFD control message. A new
section on the use of the Management VNI has been added and the
document now considers only the case of using the Management VNI to
transmitted receive BFD control messages.
Always welcome your questions and comments.

Regards,
Greg

---------- Forwarded message ---------
From: <internet-drafts@ietf.org>
Date: Mon, May 4, 2020 at 3:50 PM
Subject: New Version Notification for draft-ietf-bfd-vxlan-11.txt
To: Mallik Mudigonda <mmudigon@cisco.com>, Sudarsan Paragiri
<sudarsan.225@gmail.com>, Greg Mirsky <gregimirsky@gmail.com>, Santosh
Pallagatti <santosh.pallagatti@gmail.com>, Vengada Prasad Govindan
<venggovi@cisco.com>



A new version of I-D, draft-ietf-bfd-vxlan-11.txt
has been successfully submitted by Greg Mirsky and posted to the
IETF repository.

Name:           draft-ietf-bfd-vxlan
Revision:       11
Title:          BFD for VXLAN
Document date:  2020-05-04
Group:          bfd
Pages:          11
URL:            https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-11.txt
Status:         https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/
Htmlized:       https://tools.ietf.org/html/draft-ietf-bfd-vxlan-11
Htmlized:       https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan
Diff:           https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-vxlan-11

Abstract:
   This document describes the use of the Bidirectional Forwarding
   Detection (BFD) protocol in point-to-point Virtual eXtensible Local
   Area Network (VXLAN) tunnels used to form an overlay network.




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


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CC: rtg-bfd WG <rtg-bfd@ietf.org>, "bfd-chairs@ietf.org" <bfd-chairs@ietf.org>
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 4 May 2020 19:14:54 -0700
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Subject: Re: New Version Notification for draft-ietf-bfd-vxlan-11.txt
To: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
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Dear Carlos,
thank you for your thorough review of the updated version, helpful and
constructive suggestions. Please find my answers in-line tagged GIM>>.

Regards,
Greg

On Mon, May 4, 2020 at 5:49 PM Carlos Pignataro (cpignata)
<cpignata@cisco.com> wrote:
>
> Dear Greg,
>
> I have not checked the diff and the new text regarding the Eth MAC and mg=
mt VNI.
>
> However, these diffs also include a change that you did not mention: TTL =
/ Hop Limit handling, which is one of the comments I had made.
>
> In that context, thank you very much! since this update partially (althou=
gh largely) addresses my comment.
>
> Still missing:
>
>          TTL or Hop Limit: MUST be set to 255 in accordance with the
>          Generalized TTL Security Mechanism [RFC5881].
>
> CMP: this is an incorrect citation. The GTSM is RFC 5082, not RFC 5881. I=
 recommend adding a Reference to RFC 5082 (as I=E2=80=99d suggested before)=
.
GIM>> Agreed, will change the reference to RFC 5082
>
>    Validation of TTL or Hop Limit of the inner IP packet is performed as
>    described in Section 5 [RFC5881].
>
> CMP: This is an oversimplification. S5 of RFC 5881 explains not only how =
to validate TTL/HL, but also about demultiplexing tulles in presence of aut=
h and various header fields.
GIM>> I've compared Section 3 of RFC 5082 and Section 5 of RFC 5881
and still believe that for this document the reference to Section 5 of
RFC 5881 is more helpful to a reader and an implementor. Section 5
provides an explicit specification on handling TTL/HC !=3D 255 by a
receiving BFD system. I think that it is important to reference
Section 5, as the handling of TTL/HC !=3D 255 is different depending on
whether the BFD session is in unauthenticated or authenticated mode.
Would you agree?
>
> 9.  Security Considerations
>
> CMP: A discussion on the positive impact of using GTSM would help here.
GIM>> The Security Consideration section in RFC 5881 provides the
excellent text on the benefit of using GTSM in both, unauthenticated
and authenticated, modes. the last para in the Security Consideration
section of this document mentioned the discussion in several RFCs,
including in RFC 5881. Do you think that an additional text about the
use of GTSM in single-hop BFD should be added in this document? Could
you suggest some text?
>
> 11.  Acknowledgments
>
> CMP: Both professional courtesy as well as proper record and provenance t=
racking suggest keeping an updated Acknowledgements section.
GIM>> My apologies, I've updated the working version accordingly.
>
> Best,
>
> =E2=80=94
> Carlos Pignataro, carlos@cisco.com
>
> =E2=80=9CSometimes I use big words that I do not fully understand, to mak=
e myself sound more photosynthesis."
>
> 2020/05/04 =E5=8D=88=E5=BE=8C6:58=E3=80=81Greg Mirsky <gregimirsky@gmail.=
com>=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:
>
> Dear All,
> my apologies for holding off this upload. The update is to address a
> set of comments related to the use of destination Ethernet MAC in the
> inner Ethernet frame that encapsulates a BFD control message. A new
> section on the use of the Management VNI has been added and the
> document now considers only the case of using the Management VNI to
> transmitted receive BFD control messages.
> Always welcome your questions and comments.
>
> Regards,
> Greg
>
> ---------- Forwarded message ---------
> From: <internet-drafts@ietf.org>
> Date: Mon, May 4, 2020 at 3:50 PM
> Subject: New Version Notification for draft-ietf-bfd-vxlan-11.txt
> To: Mallik Mudigonda <mmudigon@cisco.com>, Sudarsan Paragiri
> <sudarsan.225@gmail.com>, Greg Mirsky <gregimirsky@gmail.com>, Santosh
> Pallagatti <santosh.pallagatti@gmail.com>, Vengada Prasad Govindan
> <venggovi@cisco.com>
>
>
>
> A new version of I-D, draft-ietf-bfd-vxlan-11.txt
> has been successfully submitted by Greg Mirsky and posted to the
> IETF repository.
>
> Name:           draft-ietf-bfd-vxlan
> Revision:       11
> Title:          BFD for VXLAN
> Document date:  2020-05-04
> Group:          bfd
> Pages:          11
> URL:            https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan=
-11.txt
> Status:         https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/
> Htmlized:       https://tools.ietf.org/html/draft-ietf-bfd-vxlan-11
> Htmlized:       https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxla=
n
> Diff:           https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-=
11
>
> Abstract:
>   This document describes the use of the Bidirectional Forwarding
>   Detection (BFD) protocol in point-to-point Virtual eXtensible Local
>   Area Network (VXLAN) tunnels used to form an overlay network.
>
>
>
>
> Please note that it may take a couple of minutes from the time of submiss=
ion
> until the htmlized version and diff are available at tools.ietf.org.
>
> The IETF Secretariat
>
>


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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: Greg Mirsky <gregimirsky@gmail.com>
CC: rtg-bfd WG <rtg-bfd@ietf.org>, "bfd-chairs@ietf.org" <bfd-chairs@ietf.org>
Subject: Re: New Version Notification for draft-ietf-bfd-vxlan-11.txt
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From: "Reshad Rahman (rrahman)" <rrahman@cisco.com>
To: "rtg-bfd@ietf.org" <rtg-bfd@ietf.org>
Subject: FW: Reminder: Survey on planning for possible online IETF meetings
Thread-Topic: Reminder: Survey on planning for possible online IETF meetings
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Date: Tue, 5 May 2020 18:42:14 +0000
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References: <158857581528.28405.17372040856513106617@ietfa.amsl.com> <F6B7B63B-5C48-4E17-81E0-19B1CBC5133A@cooperw.in>
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--_000_98C06E18D88E4C0E91DA0865DA0EF5E2ciscocom_--


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Tue, 5 May 2020 17:10:53 -0700
Message-ID: <CA+RyBmVY10AFjLjzKQPp__JvBsuvdM2yZ+rM2C7m0Sir_DuKVw@mail.gmail.com>
Subject: Re: New Version Notification for draft-ietf-bfd-vxlan-11.txt
To: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
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--0000000000009cfc4d05a4ef995f
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Dear Carlos,
I'll do top-posting to highlight the remaining points of discussion. Please
correct me if my understanding is not correct:

   - the reference to Section 5 RFC 5881 in the following sentence:

   Validation of TTL or Hop Limit of the inner IP packet is performed as
described in Section 5 [RFC5881].

I expect that a reader of BFD over VXLAN document is able to find the
relevant information in Section 5 of RFC 5881. Do you think that the
reference to Section 5 RFC 5881 might be confusing to the reader? Would you
suggest to use another reference without replicating the text from RFC 5881
in this document?


   - Security Considerations section

You've suggested:
Currently the security considerations does not say =E2=80=9Csecurity consid=
erations
of 5881 apply here=E2=80=9D, nor does it say =E2=80=9Cthe ttl/hl protection=
 isn=E2=80=99t useful in
foobar =E2=80=9C

I think it should say both.

This draft discusses the use of BFD over VXLAN. Do you mean that 'foobar'
is BFD over VXLAN? Since security considerations in RFC 7348 are applicable
in this draft, I don't think that GTSM is not useful in the case of BFD
over VXLAN. Or I misinterpreted 'foobar'? Could you please clarify it?

 Would the following update is acceptable:
OLD TEXT:
   Other than requiring control of the number of BFD sessions between
   the same pair of VTEPs, this specification does not raise any
   additional security issues beyond those discussed in [RFC5880],
   [RFC5881], and [RFC7348].
NEW TEXT:
   Other than requiring control of the number of BFD sessions between
   the same pair of VTEPs, this specification does not raise any
   additional security issues beyond those discussed in [RFC5880],
   [RFC5881], and [RFC7348] that apply to this document.


   - Acknowledgments

Thank you. I'll thoroughly look through all the relevant discussion threads
in the mail archive.


Regards,
Greg


On Mon, May 4, 2020 at 7:52 PM Carlos Pignataro (cpignata) <
cpignata@cisco.com> wrote:

> Dear Greg,
>
> As I said, I did *not* review the updated version (or the changes)
> thoroughly (or superficially for that matter)
>
> Please do not count this as a review of the new revision, and instead
> consider the context that I laid for my reply.
>
> I only checked the changes for one comment I had made.
>
> Please see inline.
>
> Thumb typed by Carlos Pignataro.
> Excuze typofraphicak errows
>
> 2020/05/04 =E5=8D=88=E5=BE=8C10:15=E3=80=81Greg Mirsky <gregimirsky@gmail=
.com>=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:
>
> =EF=BB=BFDear Carlos,
> thank you for your thorough review of the updated version,
>
>
> I didn=E2=80=99t. This is what I had said:
>
> I have not checked the diff and the new text regarding the Eth MAC and
> mgmt VNI.
>
> Assuming that was clear...
>
> helpful and
> constructive suggestions.
>
>
> Thanks. That was the intent, but only for the TTL/HL change.
>
> Please find my answers in-line tagged GIM>>.
>
> Regards,
> Greg
>
> On Mon, May 4, 2020 at 5:49 PM Carlos Pignataro (cpignata)
> <cpignata@cisco.com> wrote:
>
>
> Dear Greg,
>
>
> I have not checked the diff and the new text regarding the Eth MAC and
> mgmt VNI.
>
>
> However, these diffs also include a change that you did not mention: TTL =
/
> Hop Limit handling, which is one of the comments I had made.
>
>
> In that context, thank you very much! since this update partially
> (although largely) addresses my comment.
>
>
> Still missing:
>
>
>         TTL or Hop Limit: MUST be set to 255 in accordance with the
>
>         Generalized TTL Security Mechanism [RFC5881].
>
>
> CMP: this is an incorrect citation. The GTSM is RFC 5082, not RFC 5881. I
> recommend adding a Reference to RFC 5082 (as I=E2=80=99d suggested before=
).
>
> GIM>> Agreed, will change the reference to RFC 5082
>
>
> Thanks.
>
>
>   Validation of TTL or Hop Limit of the inner IP packet is performed as
>
>   described in Section 5 [RFC5881].
>
>
> CMP: This is an oversimplification. S5 of RFC 5881 explains not only how
> to validate TTL/HL, but also about demultiplexing tulles in presence of
> auth and various header fields.
>
> GIM>> I've compared Section 3 of RFC 5082 and Section 5 of RFC 5881
> and still believe that for this document the reference to Section 5 of
> RFC 5881 is more helpful to a reader and an implementor.
>
>
> Yes, I agree with this. I did not say =E2=80=9Cchange this reference to 5=
082=E2=80=9D =E2=80=94
> that was the previous comment on a different passage.
>
> Section 5
> provides an explicit specification on handling TTL/HC !=3D 255 by a
> receiving BFD system. I think that it is important to reference
> Section 5, as the handling of TTL/HC !=3D 255 is different depending on
> whether the BFD session is in unauthenticated or authenticated mode.
> Would you agree?
>
>
> Yes, but that=E2=80=99s orthogonal to my comment.
>
> My point is that the relevant text from section 5 does more than simply =
=E2=80=9C
> Validation of TTL or Hop Limit =E2=80=9D
>
>
> 9.  Security Considerations
>
>
> CMP: A discussion on the positive impact of using GTSM would help here.
>
> GIM>> The Security Consideration section in RFC 5881 provides the
> excellent text on the benefit of using GTSM in both, unauthenticated
> and authenticated, modes. the last para in the Security Consideration
> section of this document mentioned the discussion in several RFCs,
> including in RFC 5881. Do you think that an additional text about the
> use of GTSM in single-hop BFD should be added in this document?
>
>
> Yes, that=E2=80=99s why I made the comment!
>
> Currently the security considerations does not say =E2=80=9Csecurity
> considerations of 5881 apply here=E2=80=9D, nor does it say =E2=80=9Cthe =
ttl/hl protection
> isn=E2=80=99t useful in foobar =E2=80=9C
>
> I think it should say both.
>
> Could
> you suggest some text?
>
>
> 11.  Acknowledgments
>
>
> CMP: Both professional courtesy as well as proper record and provenance
> tracking suggest keeping an updated Acknowledgements section.
>
> GIM>> My apologies, I've updated the working version accordingly.
>
>
> To be clear, I=E2=80=99m not talking about me but about others who invest=
ed more
> time helping with this doc, like Joel and others. It would be useful to g=
o
> through the list archive (to also ensure all comments are captured, since
> they were made SO long ago)
>
> Best,
>
> Carlos.
>
>
> Best,
>
>
> =E2=80=94
>
> Carlos Pignataro, carlos@cisco.com
>
>
> =E2=80=9CSometimes I use big words that I do not fully understand, to mak=
e myself
> sound more photosynthesis."
>
>
> 2020/05/04 =E5=8D=88=E5=BE=8C6:58=E3=80=81Greg Mirsky <gregimirsky@gmail.=
com>=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:
>
>
> Dear All,
>
> my apologies for holding off this upload. The update is to address a
>
> set of comments related to the use of destination Ethernet MAC in the
>
> inner Ethernet frame that encapsulates a BFD control message. A new
>
> section on the use of the Management VNI has been added and the
>
> document now considers only the case of using the Management VNI to
>
> transmitted receive BFD control messages.
>
> Always welcome your questions and comments.
>
>
> Regards,
>
> Greg
>
>
> ---------- Forwarded message ---------
>
> From: <internet-drafts@ietf.org>
>
> Date: Mon, May 4, 2020 at 3:50 PM
>
> Subject: New Version Notification for draft-ietf-bfd-vxlan-11.txt
>
> To: Mallik Mudigonda <mmudigon@cisco.com>, Sudarsan Paragiri
>
> <sudarsan.225@gmail.com>, Greg Mirsky <gregimirsky@gmail.com>, Santosh
>
> Pallagatti <santosh.pallagatti@gmail.com>, Vengada Prasad Govindan
>
> <venggovi@cisco.com>
>
>
>
>
> A new version of I-D, draft-ietf-bfd-vxlan-11.txt
>
> has been successfully submitted by Greg Mirsky and posted to the
>
> IETF repository.
>
>
> Name:           draft-ietf-bfd-vxlan
>
> Revision:       11
>
> Title:          BFD for VXLAN
>
> Document date:  2020-05-04
>
> Group:          bfd
>
> Pages:          11
>
> URL:
> https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-11.txt
>
> Status:         https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/
>
> Htmlized:       https://tools.ietf.org/html/draft-ietf-bfd-vxlan-11
>
> Htmlized:       https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxla=
n
>
> Diff:           https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-=
11
>
>
> Abstract:
>
>  This document describes the use of the Bidirectional Forwarding
>
>  Detection (BFD) protocol in point-to-point Virtual eXtensible Local
>
>  Area Network (VXLAN) tunnels used to form an overlay network.
>
>
>
>
>
> 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
>
>
>
>

--0000000000009cfc4d05a4ef995f
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Dear Carlos,<br>I&#39;ll do top-posting to highlight the r=
emaining points of discussion. Please correct me if my understanding is not=
=C2=A0correct:<br><div><ul><li>the reference to Section 5 RFC 5881 in the f=
ollowing sentence:</li></ul></div><blockquote style=3D"margin:0 0 0 40px;bo=
rder:none;padding:0px"><div>=C2=A0 =C2=A0Validation of TTL or Hop Limit of =
the inner IP packet is performed as described in Section 5 [RFC5881].</div>=
</blockquote><blockquote style=3D"margin:0 0 0 40px;border:none;padding:0px=
"><div>I expect that a reader of BFD over VXLAN document is able to find th=
e relevant information in Section 5 of RFC 5881. Do you think that the refe=
rence to Section 5 RFC 5881 might be confusing to the reader? Would you sug=
gest to use another reference without replicating the text from RFC 5881 in=
 this document?</div></blockquote><ul><li>Security Considerations section</=
li></ul><blockquote style=3D"margin:0 0 0 40px;border:none;padding:0px">You=
&#39;ve suggested:<br>Currently the security considerations does not say =
=E2=80=9Csecurity considerations of 5881 apply here=E2=80=9D, nor does it s=
ay =E2=80=9Cthe ttl/hl protection isn=E2=80=99t useful in foobar =E2=80=9C<=
br><br>I think it should say both.=C2=A0<br><br>This draft discusses the us=
e of BFD over VXLAN. Do you mean that &#39;foobar&#39; is BFD over VXLAN? S=
ince security considerations in RFC 7348 are applicable in this draft, I do=
n&#39;t think that GTSM is not useful in the case of BFD over VXLAN. Or I m=
isinterpreted &#39;foobar&#39;? Could you please clarify it?<br><br></block=
quote><blockquote style=3D"margin:0 0 0 40px;border:none;padding:0px">=C2=
=A0Would the following update is acceptable:<br>OLD TEXT:<br>=C2=A0 =C2=A0O=
ther than requiring control of the number of BFD sessions between<br>=C2=A0=
 =C2=A0the same pair of VTEPs, this specification does not raise any<br>=C2=
=A0 =C2=A0additional security issues beyond those discussed in [RFC5880],<b=
r>=C2=A0 =C2=A0[RFC5881], and [RFC7348].<br>NEW TEXT:<br>=C2=A0 =C2=A0Other=
 than requiring control of the number of BFD sessions between<br>=C2=A0 =C2=
=A0the same pair of VTEPs, this specification does not raise any<br>=C2=A0 =
=C2=A0additional security issues beyond those discussed in [RFC5880],<br>=
=C2=A0 =C2=A0[RFC5881], and [RFC7348] that apply to this document.<br><br><=
/blockquote><ul><li>Acknowledgments<br></li></ul><blockquote style=3D"margi=
n:0 0 0 40px;border:none;padding:0px">Thank you. I&#39;ll thoroughly look t=
hrough all the relevant discussion threads in the mail archive.<br><br><br>=
</blockquote>Regards,<div>Greg</div></div><br><br><div class=3D"gmail_quote=
"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, May 4, 2020 at 7:52 PM Carl=
os Pignataro (cpignata) &lt;<a href=3D"mailto:cpignata@cisco.com">cpignata@=
cisco.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"auto">
<div dir=3D"ltr">
<div dir=3D"ltr">Dear Greg,
<div><br>
</div>
<div>As I said, I did <b><u>not</u></b> review the updated version (or the =
changes) thoroughly (or superficially for that matter)</div>
<div><br>
</div>
<div>Please do not count this as a review of the new revision, and instead =
consider the context that I laid for my reply.=C2=A0</div>
<div><br>
</div>
<div>I only checked the changes for one comment I had made.=C2=A0</div>
<div><br>
</div>
<div>Please see inline.=C2=A0<br>
<br>
<div dir=3D"ltr"><span>Thumb typed by Carlos
 Pignataro.</span>
<div><span>Excuze typofraphicak errows</span></div>
</div>
<div dir=3D"ltr"><br>
<blockquote type=3D"cite">2020/05/04 =E5=8D=88=E5=BE=8C10:15=E3=80=81Greg M=
irsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregim=
irsky@gmail.com</a>&gt;=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:<br>
<br>
</blockquote>
</div>
<blockquote type=3D"cite">
<div dir=3D"ltr">=EF=BB=BF<span>Dear Carlos,</span><br>
<span>thank you for your thorough review of the updated version,</span></di=
v>
</blockquote>
<div><br>
</div>
<div>I didn=E2=80=99t. This is what I had said:</div>
<div>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<blockquote type=3D"cite">I have not checked the diff and the new text rega=
rding the Eth MAC and mgmt VNI.</blockquote>
</div>
</blockquote>
</div>
<div>Assuming that was clear...</div>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr"><span>helpful and</span><br>
<span>constructive suggestions. </span></div>
</blockquote>
<div><br>
</div>
<div>Thanks. That was the intent, but only for the TTL/HL change.=C2=A0</di=
v>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr"><span>Please find my answers in-line tagged GIM&gt;&gt;.</=
span><br>
<span></span><br>
<span>Regards,</span><br>
<span>Greg</span><br>
<span></span><br>
<span>On Mon, May 4, 2020 at 5:49 PM Carlos Pignataro (cpignata)</span><br>
<span>&lt;<a href=3D"mailto:cpignata@cisco.com" target=3D"_blank">cpignata@=
cisco.com</a>&gt; wrote:</span><br>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Dear Greg,</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>I have not checked the diff and the new tex=
t regarding the Eth MAC and mgmt VNI.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>However, these diffs also include a change =
that you did not mention: TTL / Hop Limit handling, which is one of the com=
ments I had made.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>In that context, thank you very much! since=
 this update partially (although largely) addresses my comment.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Still missing:</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0TTL or Hop Limit: MUST be set to 255 in accordance with the</span><br=
>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0Generalized TTL Security Mechanism [RFC5881].</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>CMP: this is an incorrect citation. The GTS=
M is RFC 5082, not RFC 5881. I recommend adding a Reference to RFC 5082 (as=
 I=E2=80=99d suggested before).</span><br>
</blockquote>
<span>GIM&gt;&gt; Agreed, will change the reference to RFC 5082</span><br>
</div>
</blockquote>
<div><br>
</div>
Thanks.=C2=A0</div>
<div><br>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0=C2=A0Validation of TTL or Hop Limit =
of the inner IP packet is performed as</span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0=C2=A0described in Section 5 [RFC5881=
].</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>CMP: This is an oversimplification. S5 of R=
FC 5881 explains not only how to validate TTL/HL, but also about demultiple=
xing tulles in presence of auth and various header fields.</span><br>
</blockquote>
<span>GIM&gt;&gt; I&#39;ve compared Section 3 of RFC 5082 and Section 5 of =
RFC 5881</span><br>
<span>and still believe that for this document the reference to Section 5 o=
f</span><br>
<span>RFC 5881 is more helpful to a reader and an implementor. </span></div=
>
</blockquote>
<div><br>
</div>
<div>Yes, I agree with this. I did not say =E2=80=9Cchange this reference t=
o 5082=E2=80=9D =E2=80=94 that was the previous comment on a different pass=
age.=C2=A0</div>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr"><span>Section 5</span><br>
<span>provides an explicit specification on handling TTL/HC !=3D 255 by a</=
span><br>
<span>receiving BFD system. I think that it is important to reference</span=
><br>
<span>Section 5, as the handling of TTL/HC !=3D 255 is different depending =
on</span><br>
<span>whether the BFD session is in unauthenticated or authenticated mode.<=
/span><br>
<span>Would you agree?</span><br>
</div>
</blockquote>
<div><br>
</div>
<div>Yes, but that=E2=80=99s orthogonal to my comment.=C2=A0</div>
<div><br>
</div>
<div>My point is that the relevant text from section 5 does more than simpl=
y =E2=80=9C Validation of TTL or Hop Limit =E2=80=9D</div>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>9.=C2=A0 Security Considerations</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>CMP: A discussion on the positive impact of=
 using GTSM would help here.</span><br>
</blockquote>
<span>GIM&gt;&gt; The Security Consideration section in RFC 5881 provides t=
he</span><br>
<span>excellent text on the benefit of using GTSM in both, unauthenticated<=
/span><br>
<span>and authenticated, modes. the last para in the Security Consideration=
</span><br>
<span>section of this document mentioned the discussion in several RFCs,</s=
pan><br>
<span>including in RFC 5881. Do you think that an additional text about the=
</span><br>
<span>use of GTSM in single-hop BFD should be added in this document? </spa=
n></div>
</blockquote>
<div><br>
</div>
<div>Yes, that=E2=80=99s why I made the comment!</div>
<div><br>
</div>
<div>Currently the security considerations does not say =E2=80=9Csecurity c=
onsiderations of 5881 apply here=E2=80=9D, nor does it say =E2=80=9Cthe ttl=
/hl protection isn=E2=80=99t useful in foobar =E2=80=9C</div>
<div><br>
</div>
<div>I think it should say both.=C2=A0</div>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr"><span>Could</span><br>
<span>you suggest some text?</span><br>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>11.=C2=A0 Acknowledgments</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>CMP: Both professional courtesy as well as =
proper record and provenance tracking suggest keeping an updated Acknowledg=
ements section.</span><br>
</blockquote>
<span>GIM&gt;&gt; My apologies, I&#39;ve updated the working version accord=
ingly.</span><br>
</div>
</blockquote>
<div><br>
</div>
<div>To be clear, I=E2=80=99m not talking about me but about others who inv=
ested more time helping with this doc, like Joel and others. It would be us=
eful to go through the list archive (to also ensure all comments are captur=
ed, since they were made SO long ago)</div>
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Carlos.=C2=A0</div>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Best,</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>=E2=80=94</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Carlos Pignataro, <a href=3D"mailto:carlos@=
cisco.com" target=3D"_blank">carlos@cisco.com</a></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>=E2=80=9CSometimes I use big words that I d=
o not fully understand, to make myself sound more photosynthesis.&quot;</sp=
an><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>2020/05/04 =E5=8D=88=E5=BE=8C6:58=E3=80=81G=
reg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">g=
regimirsky@gmail.com</a>&gt;=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:</span><br=
>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Dear All,</span><br>
</blockquote>
<blockquote type=3D"cite"><span>my apologies for holding off this upload. T=
he update is to address a</span><br>
</blockquote>
<blockquote type=3D"cite"><span>set of comments related to the use of desti=
nation Ethernet MAC in the</span><br>
</blockquote>
<blockquote type=3D"cite"><span>inner Ethernet frame that encapsulates a BF=
D control message. A new</span><br>
</blockquote>
<blockquote type=3D"cite"><span>section on the use of the Management VNI ha=
s been added and the</span><br>
</blockquote>
<blockquote type=3D"cite"><span>document now considers only the case of usi=
ng the Management VNI to</span><br>
</blockquote>
<blockquote type=3D"cite"><span>transmitted receive BFD control messages.</=
span><br>
</blockquote>
<blockquote type=3D"cite"><span>Always welcome your questions and comments.=
</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Regards,</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Greg</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>---------- Forwarded message ---------</spa=
n><br>
</blockquote>
<blockquote type=3D"cite"><span>From: &lt;<a href=3D"mailto:internet-drafts=
@ietf.org" target=3D"_blank">internet-drafts@ietf.org</a>&gt;</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Date: Mon, May 4, 2020 at 3:50 PM</span><br=
>
</blockquote>
<blockquote type=3D"cite"><span>Subject: New Version Notification for draft=
-ietf-bfd-vxlan-11.txt</span><br>
</blockquote>
<blockquote type=3D"cite"><span>To: Mallik Mudigonda &lt;<a href=3D"mailto:=
mmudigon@cisco.com" target=3D"_blank">mmudigon@cisco.com</a>&gt;, Sudarsan =
Paragiri</span><br>
</blockquote>
<blockquote type=3D"cite"><span>&lt;<a href=3D"mailto:sudarsan.225@gmail.co=
m" target=3D"_blank">sudarsan.225@gmail.com</a>&gt;, Greg Mirsky &lt;<a hre=
f=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com<=
/a>&gt;, Santosh</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Pallagatti &lt;<a href=3D"mailto:santosh.pa=
llagatti@gmail.com" target=3D"_blank">santosh.pallagatti@gmail.com</a>&gt;,=
 Vengada Prasad Govindan</span><br>
</blockquote>
<blockquote type=3D"cite"><span>&lt;<a href=3D"mailto:venggovi@cisco.com" t=
arget=3D"_blank">venggovi@cisco.com</a>&gt;</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>A new version of I-D, draft-ietf-bfd-vxlan-=
11.txt</span><br>
</blockquote>
<blockquote type=3D"cite"><span>has been successfully submitted by Greg Mir=
sky and posted to the</span><br>
</blockquote>
<blockquote type=3D"cite"><span>IETF repository.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Name: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0draft-ietf-bfd-vxlan</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Revision: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A011</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Title: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0BFD for VXLAN</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Document date: =C2=A02020-05-04</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Group: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0bfd</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Pages: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A011</span><br>
</blockquote>
<blockquote type=3D"cite"><span>URL: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0<a href=3D"https://www.ietf.org/internet-draf=
ts/draft-ietf-bfd-vxlan-11.txt" target=3D"_blank">https://www.ietf.org/inte=
rnet-drafts/draft-ietf-bfd-vxlan-11.txt</a></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Status: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-bfd-v=
xlan/" target=3D"_blank">https://datatracker.ietf.org/doc/draft-ietf-bfd-vx=
lan/</a></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Htmlized: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0<a href=3D"https://tools.ietf.org/html/draft-ietf-bfd-vxlan-11" target=
=3D"_blank">https://tools.ietf.org/html/draft-ietf-bfd-vxlan-11</a></span><=
br>
</blockquote>
<blockquote type=3D"cite"><span>Htmlized: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan" t=
arget=3D"_blank">https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan=
</a></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Diff: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0<a href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraf=
t-ietf-bfd-vxlan-11" target=3D"_blank">https://www.ietf.org/rfcdiff?url2=3D=
draft-ietf-bfd-vxlan-11</a></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Abstract:</span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0This document describes the use of th=
e Bidirectional Forwarding</span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0Detection (BFD) protocol in point-to-=
point Virtual eXtensible Local</span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0Area Network (VXLAN) tunnels used to =
form an overlay network.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Please note that it may take a couple of mi=
nutes from the time of submission</span><br>
</blockquote>
<blockquote type=3D"cite"><span>until the htmlized version and diff are ava=
ilable at <a href=3D"http://tools.ietf.org" target=3D"_blank">tools.ietf.or=
g</a>.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>The IETF Secretariat</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
</div>
</blockquote>
</div>
</div>
</div>
</div>

</blockquote></div>

--0000000000009cfc4d05a4ef995f--


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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: Greg Mirsky <gregimirsky@gmail.com>
CC: rtg-bfd WG <rtg-bfd@ietf.org>, "bfd-chairs@ietf.org" <bfd-chairs@ietf.org>
Subject: Re: New Version Notification for draft-ietf-bfd-vxlan-11.txt
Thread-Topic: New Version Notification for draft-ietf-bfd-vxlan-11.txt
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Date: Wed, 6 May 2020 01:11:26 +0000
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Thu, 7 May 2020 13:20:02 -0700
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Subject: Re: New Version Notification for draft-ietf-bfd-vxlan-11.txt
To: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
Cc: rtg-bfd WG <rtg-bfd@ietf.org>, "bfd-chairs@ietf.org" <bfd-chairs@ietf.org>
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Dear Carlos,
thank you for the suggestions. Attached are the working version and the
diff. My notes in-line below under GIM>> tag.

Regards,
Greg

On Tue, May 5, 2020 at 6:11 PM Carlos Pignataro (cpignata) <
cpignata@cisco.com> wrote:

> Hi, Greg,
>
> Thanks for the quick reply, please see inline.
>
> =E2=80=94
> Carlos Pignataro, carlos@cisco.com
>
> *=E2=80=9CSometimes I use big words that I do not fully understand, to ma=
ke myself
> sound more photosynthesis."*
>
> 2020/05/05 =E5=8D=88=E5=BE=8C8:10=E3=80=81Greg Mirsky <gregimirsky@gmail.=
com>=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:
>
> Dear Carlos,
> I'll do top-posting to highlight the remaining points of discussion.
> Please correct me if my understanding is not correct:
>
>    - the reference to Section 5 RFC 5881 in the following sentence:
>
>    Validation of TTL or Hop Limit of the inner IP packet is performed as
> described in Section 5 [RFC5881].
>
>
>
> =E2=80=9CValidation of TTL / Hop Limit of the inner IP packet, as long as=
 the
> related considerations for BFD control packet demultiplexing and
> authentication, is performed as described in Section 5 [RFC5881].=E2=80=
=9D
>
GIM>> Thank you, accepted.

>
>
> I expect that a reader of BFD over VXLAN document is able to find the
> relevant information in Section 5 of RFC 5881. Do you think that the
> reference to Section 5 RFC 5881 might be confusing to the reader? Would y=
ou
> suggest to use another reference without replicating the text from RFC 58=
81
> in this document?
>
>
>    - Security Considerations section
>
> You've suggested:
> Currently the security considerations does not say =E2=80=9Csecurity
> considerations of 5881 apply here=E2=80=9D, nor does it say =E2=80=9Cthe =
ttl/hl protection
> isn=E2=80=99t useful in foobar =E2=80=9C
>
> I think it should say both.
>
> This draft discusses the use of BFD over VXLAN. Do you mean that 'foobar'
> is BFD over VXLAN? Since security considerations in RFC 7348 are applicab=
le
> in this draft, I don't think that GTSM is not useful in the case of BFD
> over VXLAN. Or I misinterpreted 'foobar'? Could you please clarify it?
>
>  Would the following update is acceptable:
> OLD TEXT:
>    Other than requiring control of the number of BFD sessions between
>    the same pair of VTEPs, this specification does not raise any
>    additional security issues beyond those discussed in [RFC5880],
>    [RFC5881], and [RFC7348].
> NEW TEXT:
>    Other than requiring control of the number of BFD sessions between
>    the same pair of VTEPs, this specification does not raise any
>    additional security issues beyond those discussed in [RFC5880],
>    [RFC5881], and [RFC7348] that apply to this document.
>
>
> I am sorry, as I read this I do not fully understand the first part. What
> is to =E2=80=9Crequire _control_ of the number of sessions=E2=80=9D?
>
> I would split that long sentence into two.
>
GIM>> I agree, the sentence is too convoluted. Would removing it altogether
and adding the following at the top of the section make it clearer:
   Security issues discussed in [RFC5880], [RFC5881], and [RFC7348]
   apply to this document.

>
>
>
>    - Acknowledgments
>
> Thank you. I'll thoroughly look through all the relevant discussion
> threads in the mail archive.
>
>
> Sounds good.
>
> Thanks,
>
> Carlos.
>
>
>
> Regards,
> Greg
>
>
> On Mon, May 4, 2020 at 7:52 PM Carlos Pignataro (cpignata) <
> cpignata@cisco.com> wrote:
>
>> Dear Greg,
>>
>> As I said, I did *not* review the updated version (or the changes)
>> thoroughly (or superficially for that matter)
>>
>> Please do not count this as a review of the new revision, and instead
>> consider the context that I laid for my reply.
>>
>> I only checked the changes for one comment I had made.
>>
>> Please see inline.
>>
>> Thumb typed by Carlos Pignataro.
>> Excuze typofraphicak errows
>>
>> 2020/05/04 =E5=8D=88=E5=BE=8C10:15=E3=80=81Greg Mirsky <gregimirsky@gmai=
l.com>=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:
>>
>> =EF=BB=BFDear Carlos,
>> thank you for your thorough review of the updated version,
>>
>>
>> I didn=E2=80=99t. This is what I had said:
>>
>> I have not checked the diff and the new text regarding the Eth MAC and
>> mgmt VNI.
>>
>> Assuming that was clear...
>>
>> helpful and
>> constructive suggestions.
>>
>>
>> Thanks. That was the intent, but only for the TTL/HL change.
>>
>> Please find my answers in-line tagged GIM>>.
>>
>> Regards,
>> Greg
>>
>> On Mon, May 4, 2020 at 5:49 PM Carlos Pignataro (cpignata)
>> <cpignata@cisco.com> wrote:
>>
>>
>> Dear Greg,
>>
>>
>> I have not checked the diff and the new text regarding the Eth MAC and
>> mgmt VNI.
>>
>>
>> However, these diffs also include a change that you did not mention: TTL
>> / Hop Limit handling, which is one of the comments I had made.
>>
>>
>> In that context, thank you very much! since this update partially
>> (although largely) addresses my comment.
>>
>>
>> Still missing:
>>
>>
>>         TTL or Hop Limit: MUST be set to 255 in accordance with the
>>
>>         Generalized TTL Security Mechanism [RFC5881].
>>
>>
>> CMP: this is an incorrect citation. The GTSM is RFC 5082, not RFC 5881. =
I
>> recommend adding a Reference to RFC 5082 (as I=E2=80=99d suggested befor=
e).
>>
>> GIM>> Agreed, will change the reference to RFC 5082
>>
>>
>> Thanks.
>>
>>
>>   Validation of TTL or Hop Limit of the inner IP packet is performed as
>>
>>   described in Section 5 [RFC5881].
>>
>>
>> CMP: This is an oversimplification. S5 of RFC 5881 explains not only how
>> to validate TTL/HL, but also about demultiplexing tulles in presence of
>> auth and various header fields.
>>
>> GIM>> I've compared Section 3 of RFC 5082 and Section 5 of RFC 5881
>> and still believe that for this document the reference to Section 5 of
>> RFC 5881 is more helpful to a reader and an implementor.
>>
>>
>> Yes, I agree with this. I did not say =E2=80=9Cchange this reference to =
5082=E2=80=9D =E2=80=94
>> that was the previous comment on a different passage.
>>
>> Section 5
>> provides an explicit specification on handling TTL/HC !=3D 255 by a
>> receiving BFD system. I think that it is important to reference
>> Section 5, as the handling of TTL/HC !=3D 255 is different depending on
>> whether the BFD session is in unauthenticated or authenticated mode.
>> Would you agree?
>>
>>
>> Yes, but that=E2=80=99s orthogonal to my comment.
>>
>> My point is that the relevant text from section 5 does more than simply =
=E2=80=9C
>> Validation of TTL or Hop Limit =E2=80=9D
>>
>>
>> 9.  Security Considerations
>>
>>
>> CMP: A discussion on the positive impact of using GTSM would help here.
>>
>> GIM>> The Security Consideration section in RFC 5881 provides the
>> excellent text on the benefit of using GTSM in both, unauthenticated
>> and authenticated, modes. the last para in the Security Consideration
>> section of this document mentioned the discussion in several RFCs,
>> including in RFC 5881. Do you think that an additional text about the
>> use of GTSM in single-hop BFD should be added in this document?
>>
>>
>> Yes, that=E2=80=99s why I made the comment!
>>
>> Currently the security considerations does not say =E2=80=9Csecurity
>> considerations of 5881 apply here=E2=80=9D, nor does it say =E2=80=9Cthe=
 ttl/hl protection
>> isn=E2=80=99t useful in foobar =E2=80=9C
>>
>> I think it should say both.
>>
>> Could
>> you suggest some text?
>>
>>
>> 11.  Acknowledgments
>>
>>
>> CMP: Both professional courtesy as well as proper record and provenance
>> tracking suggest keeping an updated Acknowledgements section.
>>
>> GIM>> My apologies, I've updated the working version accordingly.
>>
>>
>> To be clear, I=E2=80=99m not talking about me but about others who inves=
ted more
>> time helping with this doc, like Joel and others. It would be useful to =
go
>> through the list archive (to also ensure all comments are captured, sinc=
e
>> they were made SO long ago)
>>
>> Best,
>>
>> Carlos.
>>
>>
>> Best,
>>
>>
>> =E2=80=94
>>
>> Carlos Pignataro, carlos@cisco.com
>>
>>
>> =E2=80=9CSometimes I use big words that I do not fully understand, to ma=
ke myself
>> sound more photosynthesis."
>>
>>
>> 2020/05/04 =E5=8D=88=E5=BE=8C6:58=E3=80=81Greg Mirsky <gregimirsky@gmail=
.com>=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:
>>
>>
>> Dear All,
>>
>> my apologies for holding off this upload. The update is to address a
>>
>> set of comments related to the use of destination Ethernet MAC in the
>>
>> inner Ethernet frame that encapsulates a BFD control message. A new
>>
>> section on the use of the Management VNI has been added and the
>>
>> document now considers only the case of using the Management VNI to
>>
>> transmitted receive BFD control messages.
>>
>> Always welcome your questions and comments.
>>
>>
>> Regards,
>>
>> Greg
>>
>>
>> ---------- Forwarded message ---------
>>
>> From: <internet-drafts@ietf.org>
>>
>> Date: Mon, May 4, 2020 at 3:50 PM
>>
>> Subject: New Version Notification for draft-ietf-bfd-vxlan-11.txt
>>
>> To: Mallik Mudigonda <mmudigon@cisco.com>, Sudarsan Paragiri
>>
>> <sudarsan.225@gmail.com>, Greg Mirsky <gregimirsky@gmail.com>, Santosh
>>
>> Pallagatti <santosh.pallagatti@gmail.com>, Vengada Prasad Govindan
>>
>> <venggovi@cisco.com>
>>
>>
>>
>>
>> A new version of I-D, draft-ietf-bfd-vxlan-11.txt
>>
>> has been successfully submitted by Greg Mirsky and posted to the
>>
>> IETF repository.
>>
>>
>> Name:           draft-ietf-bfd-vxlan
>>
>> Revision:       11
>>
>> Title:          BFD for VXLAN
>>
>> Document date:  2020-05-04
>>
>> Group:          bfd
>>
>> Pages:          11
>>
>> URL:
>> https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-11.txt
>>
>> Status:         https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/
>>
>> Htmlized:       https://tools.ietf.org/html/draft-ietf-bfd-vxlan-11
>>
>> Htmlized:
>> https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan
>>
>> Diff:           https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan=
-11
>>
>>
>> Abstract:
>>
>>  This document describes the use of the Bidirectional Forwarding
>>
>>  Detection (BFD) protocol in point-to-point Virtual eXtensible Local
>>
>>  Area Network (VXLAN) tunnels used to form an overlay network.
>>
>>
>>
>>
>>
>> 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
>>
>>
>>
>>
>

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

<div dir=3D"ltr"><div dir=3D"ltr">Dear Carlos,<br><div>thank you for the su=
ggestions. Attached are the working version and the diff. My notes in-line =
below under GIM&gt;&gt; tag.</div><div><br></div><div>Regards,</div><div>Gr=
eg</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmai=
l_attr">On Tue, May 5, 2020 at 6:11 PM Carlos Pignataro (cpignata) &lt;<a h=
ref=3D"mailto:cpignata@cisco.com">cpignata@cisco.com</a>&gt; wrote:<br></di=
v><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;borde=
r-left:1px solid rgb(204,204,204);padding-left:1ex">



<div style=3D"overflow-wrap: break-word;">
Hi, Greg,
<div><br>
</div>
<div>Thanks for the quick reply, please see inline.</div>
<div><br>
<div>
<div style=3D"color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-=
indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
<div style=3D"color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-=
indent:0px;text-transform:none;white-space:normal;word-spacing:0px">
=E2=80=94<br>
Carlos Pignataro,=C2=A0<a href=3D"mailto:carlos@cisco.com" target=3D"_blank=
">carlos@cisco.com</a><br>
<br>
<i>=E2=80=9CSometimes I use big words that I do not fully understand, to ma=
ke myself sound more photosynthesis.&quot;</i></div>
</div>
</div>
<div><br>
<blockquote type=3D"cite">
<div>2020/05/05 =E5=8D=88=E5=BE=8C8:10=E3=80=81Greg Mirsky &lt;<a href=3D"m=
ailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt=
;=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:</div>
<br>
<div>
<div dir=3D"ltr">Dear Carlos,<br>
I&#39;ll do top-posting to highlight the remaining points of discussion. Pl=
ease correct me if my understanding is not=C2=A0correct:<br>
<div>
<ul>
<li>the reference to Section 5 RFC 5881 in the following sentence:</li></ul=
>
</div>
<blockquote style=3D"margin:0px 0px 0px 40px;border:none;padding:0px">
<div>=C2=A0 =C2=A0Validation of TTL or Hop Limit of the inner IP packet is =
performed as described in Section 5 [RFC5881].</div>
</blockquote>
</div>
</div>
</blockquote>
<div><br>
</div>
<div><br>
</div>
<div>=E2=80=9CValidation of TTL / Hop Limit of the inner IP packet, as long=
 as the related considerations for BFD control packet demultiplexing and au=
thentication, is performed as described in Section 5 [RFC5881].=E2=80=9D</d=
iv></div></div></div></blockquote><div>GIM&gt;&gt; Thank you, accepted.=C2=
=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style=3D"ov=
erflow-wrap: break-word;"><div><div>
<div><br>
</div>
<br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">
<blockquote style=3D"margin:0px 0px 0px 40px;border:none;padding:0px">
<div>I expect that a reader of BFD over VXLAN document is able to find the =
relevant information in Section 5 of RFC 5881. Do you think that the refere=
nce to Section 5 RFC 5881 might be confusing to the reader? Would you sugge=
st to use another reference
 without replicating the text from RFC 5881 in this document?</div>
</blockquote>
<ul>
<li>Security Considerations section</li></ul>
<blockquote style=3D"margin:0px 0px 0px 40px;border:none;padding:0px">You&#=
39;ve suggested:<br>
Currently the security considerations does not say =E2=80=9Csecurity consid=
erations of 5881 apply here=E2=80=9D, nor does it say =E2=80=9Cthe ttl/hl p=
rotection isn=E2=80=99t useful in foobar =E2=80=9C<br>
<br>
I think it should say both.=C2=A0<br>
<br>
This draft discusses the use of BFD over VXLAN. Do you mean that &#39;fooba=
r&#39; is BFD over VXLAN? Since security considerations in RFC 7348 are app=
licable in this draft, I don&#39;t think that GTSM is not useful in the cas=
e of BFD over VXLAN. Or I misinterpreted &#39;foobar&#39;?
 Could you please clarify it?<br>
<br>
</blockquote>
<blockquote style=3D"margin:0px 0px 0px 40px;border:none;padding:0px">=C2=
=A0Would the following update is acceptable:<br>
OLD TEXT:<br>
=C2=A0 =C2=A0Other than requiring control of the number of BFD sessions bet=
ween<br>
=C2=A0 =C2=A0the same pair of VTEPs, this specification does not raise any<=
br>
=C2=A0 =C2=A0additional security issues beyond those discussed in [RFC5880]=
,<br>
=C2=A0 =C2=A0[RFC5881], and [RFC7348].<br>
NEW TEXT:<br>
=C2=A0 =C2=A0Other than requiring control of the number of BFD sessions bet=
ween<br>
=C2=A0 =C2=A0the same pair of VTEPs, this specification does not raise any<=
br>
=C2=A0 =C2=A0additional security issues beyond those discussed in [RFC5880]=
,<br>
=C2=A0 =C2=A0[RFC5881], and [RFC7348] that apply to this document.<br>
</blockquote>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>I am sorry, as I read this I do not fully understand the first part. W=
hat is to =E2=80=9Crequire _control_ of the number of sessions=E2=80=9D?</d=
iv>
<div><br>
</div>
<div>I would split that long sentence into two.</div></div></div></div></bl=
ockquote><div>GIM&gt;&gt; I agree, the sentence is too convoluted. Would re=
moving it altogether and adding the following=C2=A0at the top of the sectio=
n make it clearer:</div>=C2=A0 =C2=A0Security issues discussed in [RFC5880]=
, [RFC5881], and [RFC7348]<br><div>=C2=A0 =C2=A0apply to this document.=C2=
=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style=3D"ov=
erflow-wrap: break-word;"><div><div>
<br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">
<blockquote style=3D"margin:0px 0px 0px 40px;border:none;padding:0px"><br>
</blockquote>
<ul>
<li>Acknowledgments<br>
</li></ul>
<blockquote style=3D"margin:0px 0px 0px 40px;border:none;padding:0px">Thank=
 you. I&#39;ll thoroughly look through all the relevant discussion threads =
in the mail archive.<br>
</blockquote>
</div>
</div>
</blockquote>
<div><br>
</div>
Sounds good.</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Carlos.</div>
<div><br>
<blockquote type=3D"cite">
<div>
<div dir=3D"ltr">
<blockquote style=3D"margin:0px 0px 0px 40px;border:none;padding:0px"><br>
<br>
</blockquote>
Regards,
<div>Greg</div>
</div>
<br>
<br>
<div class=3D"gmail_quote">
<div dir=3D"ltr" class=3D"gmail_attr">On Mon, May 4, 2020 at 7:52 PM Carlos=
 Pignataro (cpignata) &lt;<a href=3D"mailto:cpignata@cisco.com" target=3D"_=
blank">cpignata@cisco.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"auto">
<div dir=3D"ltr">
<div dir=3D"ltr">Dear Greg,
<div><br>
</div>
<div>As I said, I did <b><u>not</u></b> review the updated version (or the =
changes) thoroughly (or superficially for that matter)</div>
<div><br>
</div>
<div>Please do not count this as a review of the new revision, and instead =
consider the context that I laid for my reply.=C2=A0</div>
<div><br>
</div>
<div>I only checked the changes for one comment I had made.=C2=A0</div>
<div><br>
</div>
<div>Please see inline.=C2=A0<br>
<br>
<div dir=3D"ltr"><span>Thumb typed by Carlos Pignataro.</span>
<div><span>Excuze typofraphicak errows</span></div>
</div>
<div dir=3D"ltr"><br>
<blockquote type=3D"cite">2020/05/04 =E5=8D=88=E5=BE=8C10:15=E3=80=81Greg M=
irsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregim=
irsky@gmail.com</a>&gt;=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:<br>
<br>
</blockquote>
</div>
<blockquote type=3D"cite">
<div dir=3D"ltr">=EF=BB=BF<span>Dear Carlos,</span><br>
<span>thank you for your thorough review of the updated version,</span></di=
v>
</blockquote>
<div><br>
</div>
<div>I didn=E2=80=99t. This is what I had said:</div>
<div>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<blockquote type=3D"cite">I have not checked the diff and the new text rega=
rding the Eth MAC and mgmt VNI.</blockquote>
</div>
</blockquote>
</div>
<div>Assuming that was clear...</div>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr"><span>helpful and</span><br>
<span>constructive suggestions. </span></div>
</blockquote>
<div><br>
</div>
<div>Thanks. That was the intent, but only for the TTL/HL change.=C2=A0</di=
v>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr"><span>Please find my answers in-line tagged GIM&gt;&gt;.</=
span><br>
<span></span><br>
<span>Regards,</span><br>
<span>Greg</span><br>
<span></span><br>
<span>On Mon, May 4, 2020 at 5:49 PM Carlos Pignataro (cpignata)</span><br>
<span>&lt;<a href=3D"mailto:cpignata@cisco.com" target=3D"_blank">cpignata@=
cisco.com</a>&gt; wrote:</span><br>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Dear Greg,</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>I have not checked the diff and the new tex=
t regarding the Eth MAC and mgmt VNI.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>However, these diffs also include a change =
that you did not mention: TTL / Hop Limit handling, which is one of the com=
ments I had made.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>In that context, thank you very much! since=
 this update partially (although largely) addresses my comment.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Still missing:</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0TTL or Hop Limit: MUST be set to 255 in accordance with the</span><br=
>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0Generalized TTL Security Mechanism [RFC5881].</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>CMP: this is an incorrect citation. The GTS=
M is RFC 5082, not RFC 5881. I recommend adding a Reference to RFC 5082 (as=
 I=E2=80=99d suggested before).</span><br>
</blockquote>
<span>GIM&gt;&gt; Agreed, will change the reference to RFC 5082</span><br>
</div>
</blockquote>
<div><br>
</div>
Thanks.=C2=A0</div>
<div><br>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0=C2=A0Validation of TTL or Hop Limit =
of the inner IP packet is performed as</span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0=C2=A0described in Section 5 [RFC5881=
].</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>CMP: This is an oversimplification. S5 of R=
FC 5881 explains not only how to validate TTL/HL, but also about demultiple=
xing tulles in presence of auth and various header fields.</span><br>
</blockquote>
<span>GIM&gt;&gt; I&#39;ve compared Section 3 of RFC 5082 and Section 5 of =
RFC 5881</span><br>
<span>and still believe that for this document the reference to Section 5 o=
f</span><br>
<span>RFC 5881 is more helpful to a reader and an implementor. </span></div=
>
</blockquote>
<div><br>
</div>
<div>Yes, I agree with this. I did not say =E2=80=9Cchange this reference t=
o 5082=E2=80=9D =E2=80=94 that was the previous comment on a different pass=
age.=C2=A0</div>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr"><span>Section 5</span><br>
<span>provides an explicit specification on handling TTL/HC !=3D 255 by a</=
span><br>
<span>receiving BFD system. I think that it is important to reference</span=
><br>
<span>Section 5, as the handling of TTL/HC !=3D 255 is different depending =
on</span><br>
<span>whether the BFD session is in unauthenticated or authenticated mode.<=
/span><br>
<span>Would you agree?</span><br>
</div>
</blockquote>
<div><br>
</div>
<div>Yes, but that=E2=80=99s orthogonal to my comment.=C2=A0</div>
<div><br>
</div>
<div>My point is that the relevant text from section 5 does more than simpl=
y =E2=80=9C Validation of TTL or Hop Limit =E2=80=9D</div>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>9.=C2=A0 Security Considerations</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>CMP: A discussion on the positive impact of=
 using GTSM would help here.</span><br>
</blockquote>
<span>GIM&gt;&gt; The Security Consideration section in RFC 5881 provides t=
he</span><br>
<span>excellent text on the benefit of using GTSM in both, unauthenticated<=
/span><br>
<span>and authenticated, modes. the last para in the Security Consideration=
</span><br>
<span>section of this document mentioned the discussion in several RFCs,</s=
pan><br>
<span>including in RFC 5881. Do you think that an additional text about the=
</span><br>
<span>use of GTSM in single-hop BFD should be added in this document? </spa=
n>
</div>
</blockquote>
<div><br>
</div>
<div>Yes, that=E2=80=99s why I made the comment!</div>
<div><br>
</div>
<div>Currently the security considerations does not say =E2=80=9Csecurity c=
onsiderations of 5881 apply here=E2=80=9D, nor does it say =E2=80=9Cthe ttl=
/hl protection isn=E2=80=99t useful in foobar =E2=80=9C</div>
<div><br>
</div>
<div>I think it should say both.=C2=A0</div>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr"><span>Could</span><br>
<span>you suggest some text?</span><br>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>11.=C2=A0 Acknowledgments</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>CMP: Both professional courtesy as well as =
proper record and provenance tracking suggest keeping an updated Acknowledg=
ements section.</span><br>
</blockquote>
<span>GIM&gt;&gt; My apologies, I&#39;ve updated the working version accord=
ingly.</span><br>
</div>
</blockquote>
<div><br>
</div>
<div>To be clear, I=E2=80=99m not talking about me but about others who inv=
ested more time helping with this doc, like Joel and others. It would be us=
eful to go through the list archive (to also ensure all comments are captur=
ed, since they were made SO long
 ago)</div>
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Carlos.=C2=A0</div>
<br>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Best,</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>=E2=80=94</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Carlos Pignataro, <a href=3D"mailto:carlos@=
cisco.com" target=3D"_blank">
carlos@cisco.com</a></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>=E2=80=9CSometimes I use big words that I d=
o not fully understand, to make myself sound more photosynthesis.&quot;</sp=
an><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>2020/05/04 =E5=8D=88=E5=BE=8C6:58=E3=80=81G=
reg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">g=
regimirsky@gmail.com</a>&gt;=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:</span><br=
>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Dear All,</span><br>
</blockquote>
<blockquote type=3D"cite"><span>my apologies for holding off this upload. T=
he update is to address a</span><br>
</blockquote>
<blockquote type=3D"cite"><span>set of comments related to the use of desti=
nation Ethernet MAC in the</span><br>
</blockquote>
<blockquote type=3D"cite"><span>inner Ethernet frame that encapsulates a BF=
D control message. A new</span><br>
</blockquote>
<blockquote type=3D"cite"><span>section on the use of the Management VNI ha=
s been added and the</span><br>
</blockquote>
<blockquote type=3D"cite"><span>document now considers only the case of usi=
ng the Management VNI to</span><br>
</blockquote>
<blockquote type=3D"cite"><span>transmitted receive BFD control messages.</=
span><br>
</blockquote>
<blockquote type=3D"cite"><span>Always welcome your questions and comments.=
</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Regards,</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Greg</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>---------- Forwarded message ---------</spa=
n><br>
</blockquote>
<blockquote type=3D"cite"><span>From: &lt;<a href=3D"mailto:internet-drafts=
@ietf.org" target=3D"_blank">internet-drafts@ietf.org</a>&gt;</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Date: Mon, May 4, 2020 at 3:50 PM</span><br=
>
</blockquote>
<blockquote type=3D"cite"><span>Subject: New Version Notification for draft=
-ietf-bfd-vxlan-11.txt</span><br>
</blockquote>
<blockquote type=3D"cite"><span>To: Mallik Mudigonda &lt;<a href=3D"mailto:=
mmudigon@cisco.com" target=3D"_blank">mmudigon@cisco.com</a>&gt;, Sudarsan =
Paragiri</span><br>
</blockquote>
<blockquote type=3D"cite"><span>&lt;<a href=3D"mailto:sudarsan.225@gmail.co=
m" target=3D"_blank">sudarsan.225@gmail.com</a>&gt;, Greg Mirsky &lt;<a hre=
f=3D"mailto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com<=
/a>&gt;, Santosh</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Pallagatti &lt;<a href=3D"mailto:santosh.pa=
llagatti@gmail.com" target=3D"_blank">santosh.pallagatti@gmail.com</a>&gt;,=
 Vengada Prasad Govindan</span><br>
</blockquote>
<blockquote type=3D"cite"><span>&lt;<a href=3D"mailto:venggovi@cisco.com" t=
arget=3D"_blank">venggovi@cisco.com</a>&gt;</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>A new version of I-D, draft-ietf-bfd-vxlan-=
11.txt</span><br>
</blockquote>
<blockquote type=3D"cite"><span>has been successfully submitted by Greg Mir=
sky and posted to the</span><br>
</blockquote>
<blockquote type=3D"cite"><span>IETF repository.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Name: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0draft-ietf-bfd-vxlan</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Revision: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A011</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Title: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0BFD for VXLAN</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Document date: =C2=A02020-05-04</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Group: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0bfd</span><br>
</blockquote>
<blockquote type=3D"cite"><span>Pages: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A011</span><br>
</blockquote>
<blockquote type=3D"cite"><span>URL: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0<a href=3D"https://www.ietf.org/internet-draf=
ts/draft-ietf-bfd-vxlan-11.txt" target=3D"_blank">https://www.ietf.org/inte=
rnet-drafts/draft-ietf-bfd-vxlan-11.txt</a></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Status: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-bfd-v=
xlan/" target=3D"_blank">https://datatracker.ietf.org/doc/draft-ietf-bfd-vx=
lan/</a></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Htmlized: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0<a href=3D"https://tools.ietf.org/html/draft-ietf-bfd-vxlan-11" target=
=3D"_blank">https://tools.ietf.org/html/draft-ietf-bfd-vxlan-11</a></span><=
br>
</blockquote>
<blockquote type=3D"cite"><span>Htmlized: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan" t=
arget=3D"_blank">https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan=
</a></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Diff: =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0<a href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraf=
t-ietf-bfd-vxlan-11" target=3D"_blank">https://www.ietf.org/rfcdiff?url2=3D=
draft-ietf-bfd-vxlan-11</a></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Abstract:</span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0This document describes the use of th=
e Bidirectional Forwarding</span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0Detection (BFD) protocol in point-to-=
point Virtual eXtensible Local</span><br>
</blockquote>
<blockquote type=3D"cite"><span>=C2=A0Area Network (VXLAN) tunnels used to =
form an overlay network.</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>Please note that it may take a couple of mi=
nutes from the time of submission</span><br>
</blockquote>
<blockquote type=3D"cite"><span>until the htmlized version and diff are ava=
ilable at
<a href=3D"http://tools.ietf.org/" target=3D"_blank">tools.ietf.org</a>.</s=
pan><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span>The IETF Secretariat</span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
<blockquote type=3D"cite"><span></span><br>
</blockquote>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</div>

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

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From nobody Mon May 25 15:00:48 2020
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Subject: I-D Action: draft-ietf-bfd-vxlan-12.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 Bidirectional Forwarding Detection WG of the IETF.

        Title           : BFD for VXLAN
        Authors         : Santosh Pallagatti
                          Sudarsan Paragiri
                          Vengada Prasad Govindan
                          Mallik Mudigonda
                          Greg Mirsky
	Filename        : draft-ietf-bfd-vxlan-12.txt
	Pages           : 11
	Date            : 2020-05-25

Abstract:
   This document describes the use of the Bidirectional Forwarding
   Detection (BFD) protocol in point-to-point Virtual eXtensible Local
   Area Network (VXLAN) tunnels used to form an overlay network.


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-bfd-vxlan-12
https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan-12

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-vxlan-12


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 May 25 15:11:42 2020
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 25 May 2020 15:11:24 -0700
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Subject: Fwd: New Version Notification for draft-ietf-bfd-vxlan-12.txt
To: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>, bfd-chairs@ietf.org, rtg-bfd WG <rtg-bfd@ietf.org>
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--00000000000024dd8805a68043c7
Content-Type: text/plain; charset="UTF-8"

Dear Carlos,
thank you for your comments and suggestions. I hope that the updated
version of the draft addresses your comments. Please let me know whether
I've captured them all correctly.

Dear Jeff and Reshad,
I believe that all action points from the IESG reviews and discussions are
reflected in the current version. I much appreciate your consideration and
suggestion on the next steps to progress this document.

Regards,
Greg

---------- Forwarded message ---------
From: <internet-drafts@ietf.org>
Date: Mon, May 25, 2020 at 3:00 PM
Subject: New Version Notification for draft-ietf-bfd-vxlan-12.txt
To: Sudarsan Paragiri <sudarsan.225@gmail.com>, Mallik Mudigonda <
mmudigon@cisco.com>, Greg Mirsky <gregimirsky@gmail.com>, Vengada Prasad
Govindan <venggovi@cisco.com>, Santosh Pallagatti <
santosh.pallagatti@gmail.com>



A new version of I-D, draft-ietf-bfd-vxlan-12.txt
has been successfully submitted by Greg Mirsky and posted to the
IETF repository.

Name:           draft-ietf-bfd-vxlan
Revision:       12
Title:          BFD for VXLAN
Document date:  2020-05-25
Group:          bfd
Pages:          11
URL:
https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-12.txt
Status:         https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/
Htmlized:       https://tools.ietf.org/html/draft-ietf-bfd-vxlan-12
Htmlized:       https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan
Diff:           https://www.ietf.org/rfcdiff?url2=draft-ietf-bfd-vxlan-12

Abstract:
   This document describes the use of the Bidirectional Forwarding
   Detection (BFD) protocol in point-to-point Virtual eXtensible Local
   Area Network (VXLAN) tunnels used to form an overlay network.




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

--00000000000024dd8805a68043c7
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Dear Carlos,<div>thank you for your comments and suggestio=
ns. I hope that the updated version of the draft addresses your comments. P=
lease let me know whether I&#39;ve captured them all correctly.</div><div><=
br></div><div>Dear Jeff and Reshad,</div><div>I believe that all action poi=
nts from the IESG reviews and discussions are reflected in the current vers=
ion. I much appreciate your consideration and suggestion on the next steps =
to progress this document.</div><div><br></div><div>Regards,</div><div>Greg=
<br><br><div class=3D"gmail_quote"><div class=3D"gmail_attr" dir=3D"ltr">--=
-------- Forwarded message ---------<br>From: <span dir=3D"auto">&lt;<a hre=
f=3D"mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>&gt;</spa=
n><br>Date: Mon, May 25, 2020 at 3:00 PM<br>Subject: New Version Notificati=
on for draft-ietf-bfd-vxlan-12.txt<br>To: Sudarsan Paragiri &lt;<a href=3D"=
mailto:sudarsan.225@gmail.com">sudarsan.225@gmail.com</a>&gt;, Mallik Mudig=
onda &lt;<a href=3D"mailto:mmudigon@cisco.com">mmudigon@cisco.com</a>&gt;, =
Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com">gregimirsky@gmail.=
com</a>&gt;, Vengada Prasad Govindan &lt;<a href=3D"mailto:venggovi@cisco.c=
om">venggovi@cisco.com</a>&gt;, Santosh Pallagatti &lt;<a href=3D"mailto:sa=
ntosh.pallagatti@gmail.com">santosh.pallagatti@gmail.com</a>&gt;<br></div><=
br><br><br>
A new version of I-D, draft-ietf-bfd-vxlan-12.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-bfd-vxlan<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A012<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 BFD for VXLAN<br>
Document date:=C2=A0 2020-05-25<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 bfd<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 11<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a target=3D"_blank" rel=3D"n=
oreferrer" href=3D"https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxla=
n-12.txt">https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-12.txt<=
/a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a target=3D"_blank" rel=3D"norefe=
rrer" href=3D"https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/">https=
://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a target=3D"_blank" rel=3D"noreferrer"=
 href=3D"https://tools.ietf.org/html/draft-ietf-bfd-vxlan-12">https://tools=
.ietf.org/html/draft-ietf-bfd-vxlan-12</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a target=3D"_blank" rel=3D"noreferrer"=
 href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan">https:=
//datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a target=3D"_blank" rel=3D"n=
oreferrer" href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan=
-12">https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-12</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes the use of the Bidirectional Forwardin=
g<br>
=C2=A0 =C2=A0Detection (BFD) protocol in point-to-point Virtual eXtensible =
Local<br>
=C2=A0 =C2=A0Area Network (VXLAN) tunnels used to form an overlay network.<=
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 target=3D"_blank" r=
el=3D"noreferrer" href=3D"http://tools.ietf.org">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
<br>
</div></div></div>

--00000000000024dd8805a68043c7--


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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: Greg Mirsky <gregimirsky@gmail.com>
CC: "bfd-chairs@ietf.org" <bfd-chairs@ietf.org>, rtg-bfd WG <rtg-bfd@ietf.org>
Subject: Re: New Version Notification for draft-ietf-bfd-vxlan-12.txt
Thread-Topic: New Version Notification for draft-ietf-bfd-vxlan-12.txt
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Thank you, Greg.

I only looked at the update to the last paragraph of Section 6.

Reading through the last paragraph of Section 6, the text is not fully =
clear. There are a few nits, including a missing article, /as long as/as =
well as/, /is/are/, and missing preposition which results in an =
incorrect pointer.

I=E2=80=99d suggest, for your consideration:

OLD:
   Validation of TTL / Hop Limit of the inner IP packet, as long as the
   related considerations for BFD control packet demultiplexing and
   authentication, is performed as described in Section 5 [RFC5881].


OLD:
   Validation of the TTL / Hop Limit field of the inner IP packet, as
   well as the related considerations for BFD control packet
   demultiplexing and authentication, are performed as described in
   Section 5 of [RFC5881].

Best,

Carlos.

> 2020/05/25 =E5=8D=88=E5=BE=8C6:11=E3=80=81Greg Mirsky =
<gregimirsky@gmail.com>=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:
>=20
> Dear Carlos,
> thank you for your comments and suggestions. I hope that the updated =
version of the draft addresses your comments. Please let me know whether =
I've captured them all correctly.
>=20
> Dear Jeff and Reshad,
> I believe that all action points from the IESG reviews and discussions =
are reflected in the current version. I much appreciate your =
consideration and suggestion on the next steps to progress this =
document.
>=20
> Regards,
> Greg
>=20
> ---------- Forwarded message ---------
> From: <internet-drafts@ietf.org <mailto:internet-drafts@ietf.org>>
> Date: Mon, May 25, 2020 at 3:00 PM
> Subject: New Version Notification for draft-ietf-bfd-vxlan-12.txt
> To: Sudarsan Paragiri <sudarsan.225@gmail.com =
<mailto:sudarsan.225@gmail.com>>, Mallik Mudigonda <mmudigon@cisco.com =
<mailto:mmudigon@cisco.com>>, Greg Mirsky <gregimirsky@gmail.com =
<mailto:gregimirsky@gmail.com>>, Vengada Prasad Govindan =
<venggovi@cisco.com <mailto:venggovi@cisco.com>>, Santosh Pallagatti =
<santosh.pallagatti@gmail.com <mailto:santosh.pallagatti@gmail.com>>
>=20
>=20
>=20
> A new version of I-D, draft-ietf-bfd-vxlan-12.txt
> has been successfully submitted by Greg Mirsky and posted to the
> IETF repository.
>=20
> Name:           draft-ietf-bfd-vxlan
> Revision:       12
> Title:          BFD for VXLAN
> Document date:  2020-05-25
> Group:          bfd
> Pages:          11
> URL:            =
https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-12.txt =
<https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-12.txt>
> Status:         https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/ =
<https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/>
> Htmlized:       https://tools.ietf.org/html/draft-ietf-bfd-vxlan-12 =
<https://tools.ietf.org/html/draft-ietf-bfd-vxlan-12>
> Htmlized:       =
https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan =
<https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan>
> Diff:           =
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-12 =
<https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-12>
>=20
> Abstract:
>    This document describes the use of the Bidirectional Forwarding
>    Detection (BFD) protocol in point-to-point Virtual eXtensible Local
>    Area Network (VXLAN) tunnels used to form an overlay network.
>=20
>=20
>=20
>=20
> 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 =
<http://tools.ietf.org/>.
>=20
> The IETF Secretariat
>=20
>=20


--Apple-Mail=_CF084EA6-1FD4-4271-9343-7D494680C162
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
	charset=utf-8

<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">Thank=
 you, Greg.<div class=3D""><br class=3D""></div><div class=3D"">I only =
looked at the update to the last paragraph of Section 6.</div><div =
class=3D""><br class=3D""></div><div class=3D"">Reading through the last =
paragraph of Section 6, the text is not fully clear. There are a few =
nits, including a missing article, /as long as/as well as/, /is/are/, =
and missing preposition which results in an incorrect =
pointer.&nbsp;</div><div class=3D""><br class=3D""></div><div =
class=3D"">I=E2=80=99d suggest, for your consideration:</div><div =
class=3D""><br class=3D""></div><div class=3D"">OLD:</div><div =
class=3D""><div class=3D"">&nbsp; &nbsp;Validation of TTL / Hop Limit of =
the inner IP packet, as long as the</div><div class=3D"">&nbsp; =
&nbsp;related considerations for BFD control packet demultiplexing =
and</div><div class=3D"">&nbsp; &nbsp;authentication, is performed as =
described in Section 5 [RFC5881].</div><br =
class=3D"Apple-interchange-newline"><br class=3D""><div =
style=3D"caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);" =
class=3D"">OLD:</div><div style=3D"caret-color: rgb(0, 0, 0); color: =
rgb(0, 0, 0);" class=3D""><div class=3D"">&nbsp; &nbsp;Validation of the =
TTL / Hop Limit field of the inner IP packet, as&nbsp;</div><div =
class=3D"">&nbsp; &nbsp;well as the related considerations for BFD =
control packet&nbsp;</div><div class=3D"">&nbsp; &nbsp;demultiplexing =
and authentication, are performed as described in&nbsp;</div><div =
class=3D"">&nbsp; &nbsp;Section 5 of [RFC5881].</div><div class=3D""><br =
class=3D""></div><div class=3D"">Best,</div><div class=3D""><br =
class=3D""></div><div class=3D"">Carlos.</div></div><div><br =
class=3D""><blockquote type=3D"cite" class=3D""><div class=3D"">2020/05/25=
 =E5=8D=88=E5=BE=8C6:11=E3=80=81Greg Mirsky &lt;<a =
href=3D"mailto:gregimirsky@gmail.com" =
class=3D"">gregimirsky@gmail.com</a>&gt;=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB=
:</div><br class=3D"Apple-interchange-newline"><div class=3D""><meta =
http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8" =
class=3D""><div dir=3D"ltr" class=3D"">Dear Carlos,<div class=3D"">thank =
you for your comments and suggestions. I hope that the updated version =
of the draft addresses your comments. Please let me know whether I've =
captured them all correctly.</div><div class=3D""><br =
class=3D""></div><div class=3D"">Dear Jeff and Reshad,</div><div =
class=3D"">I believe that all action points from the IESG reviews and =
discussions are reflected in the current version. I much appreciate your =
consideration and suggestion on the next steps to progress this =
document.</div><div class=3D""><br class=3D""></div><div =
class=3D"">Regards,</div><div class=3D"">Greg<br class=3D""><br =
class=3D""><div class=3D"gmail_quote"><div class=3D"gmail_attr" =
dir=3D"ltr">---------- Forwarded message ---------<br class=3D"">From: =
<span dir=3D"auto" class=3D"">&lt;<a =
href=3D"mailto:internet-drafts@ietf.org" =
class=3D"">internet-drafts@ietf.org</a>&gt;</span><br class=3D"">Date: =
Mon, May 25, 2020 at 3:00 PM<br class=3D"">Subject: New Version =
Notification for draft-ietf-bfd-vxlan-12.txt<br class=3D"">To: Sudarsan =
Paragiri &lt;<a href=3D"mailto:sudarsan.225@gmail.com" =
class=3D"">sudarsan.225@gmail.com</a>&gt;, Mallik Mudigonda &lt;<a =
href=3D"mailto:mmudigon@cisco.com" class=3D"">mmudigon@cisco.com</a>&gt;, =
Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" =
class=3D"">gregimirsky@gmail.com</a>&gt;, Vengada Prasad Govindan &lt;<a =
href=3D"mailto:venggovi@cisco.com" class=3D"">venggovi@cisco.com</a>&gt;, =
Santosh Pallagatti &lt;<a href=3D"mailto:santosh.pallagatti@gmail.com" =
class=3D"">santosh.pallagatti@gmail.com</a>&gt;<br class=3D""></div><br =
class=3D""><br class=3D""><br class=3D"">
A new version of I-D, draft-ietf-bfd-vxlan-12.txt<br class=3D"">
has been successfully submitted by Greg Mirsky and posted to the<br =
class=3D"">
IETF repository.<br class=3D"">
<br class=3D"">
Name:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;draft-ietf-bfd-vxlan<br =
class=3D"">
Revision:&nbsp; &nbsp; &nbsp; &nbsp;12<br class=3D"">
Title:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; BFD for VXLAN<br class=3D"">
Document date:&nbsp; 2020-05-25<br class=3D"">
Group:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; bfd<br class=3D"">
Pages:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 11<br class=3D"">
URL:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a target=3D"_blank" =
rel=3D"noreferrer" =
href=3D"https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-12.txt" =
class=3D"">https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-12.tx=
t</a><br class=3D"">
Status:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a target=3D"_blank" =
rel=3D"noreferrer" =
href=3D"https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/" =
class=3D"">https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/</a><br =
class=3D"">
Htmlized:&nbsp; &nbsp; &nbsp; &nbsp;<a target=3D"_blank" =
rel=3D"noreferrer" =
href=3D"https://tools.ietf.org/html/draft-ietf-bfd-vxlan-12" =
class=3D"">https://tools.ietf.org/html/draft-ietf-bfd-vxlan-12</a><br =
class=3D"">
Htmlized:&nbsp; &nbsp; &nbsp; &nbsp;<a target=3D"_blank" =
rel=3D"noreferrer" =
href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan" =
class=3D"">https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan</a><=
br class=3D"">
Diff:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a target=3D"_blank" =
rel=3D"noreferrer" =
href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-12" =
class=3D"">https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-12</a>=
<br class=3D"">
<br class=3D"">
Abstract:<br class=3D"">
&nbsp; &nbsp;This document describes the use of the Bidirectional =
Forwarding<br class=3D"">
&nbsp; &nbsp;Detection (BFD) protocol in point-to-point Virtual =
eXtensible Local<br class=3D"">
&nbsp; &nbsp;Area Network (VXLAN) tunnels used to form an overlay =
network.<br class=3D"">
<br class=3D"">
<br class=3D"">
<br class=3D"">
<br class=3D"">
Please note that it may take a couple of minutes from the time of =
submission<br class=3D"">
until the htmlized version and diff are available at <a target=3D"_blank" =
rel=3D"noreferrer" href=3D"http://tools.ietf.org/" =
class=3D"">tools.ietf.org</a>.<br class=3D"">
<br class=3D"">
The IETF Secretariat<br class=3D"">
<br class=3D"">
<br class=3D"">
</div></div></div>
</div></blockquote></div><br class=3D""></div></body></html>=

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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Tue, 26 May 2020 15:34:11 -0700
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Subject: Re: New Version Notification for draft-ietf-bfd-vxlan-12.txt
To: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
Cc: "bfd-chairs@ietf.org" <bfd-chairs@ietf.org>, rtg-bfd WG <rtg-bfd@ietf.org>
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--00000000000073530405a694b2b4
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Dear Carlos,
thank you for the suggested update. I agree that it improves the text. Will
include in the working version of the draft for now.

Regards,
Greg

On Mon, May 25, 2020 at 6:15 PM Carlos Pignataro (cpignata) <
cpignata@cisco.com> wrote:

> Thank you, Greg.
>
> I only looked at the update to the last paragraph of Section 6.
>
> Reading through the last paragraph of Section 6, the text is not fully
> clear. There are a few nits, including a missing article, /as long as/as
> well as/, /is/are/, and missing preposition which results in an incorrect
> pointer.
>
> I=E2=80=99d suggest, for your consideration:
>
> OLD:
>    Validation of TTL / Hop Limit of the inner IP packet, as long as the
>    related considerations for BFD control packet demultiplexing and
>    authentication, is performed as described in Section 5 [RFC5881].
>
>
> OLD:
>    Validation of the TTL / Hop Limit field of the inner IP packet, as
>    well as the related considerations for BFD control packet
>    demultiplexing and authentication, are performed as described in
>    Section 5 of [RFC5881].
>
> Best,
>
> Carlos.
>
> 2020/05/25 =E5=8D=88=E5=BE=8C6:11=E3=80=81Greg Mirsky <gregimirsky@gmail.=
com>=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB:
>
> Dear Carlos,
> thank you for your comments and suggestions. I hope that the updated
> version of the draft addresses your comments. Please let me know whether
> I've captured them all correctly.
>
> Dear Jeff and Reshad,
> I believe that all action points from the IESG reviews and discussions ar=
e
> reflected in the current version. I much appreciate your consideration an=
d
> suggestion on the next steps to progress this document.
>
> Regards,
> Greg
>
> ---------- Forwarded message ---------
> From: <internet-drafts@ietf.org>
> Date: Mon, May 25, 2020 at 3:00 PM
> Subject: New Version Notification for draft-ietf-bfd-vxlan-12.txt
> To: Sudarsan Paragiri <sudarsan.225@gmail.com>, Mallik Mudigonda <
> mmudigon@cisco.com>, Greg Mirsky <gregimirsky@gmail.com>, Vengada Prasad
> Govindan <venggovi@cisco.com>, Santosh Pallagatti <
> santosh.pallagatti@gmail.com>
>
>
>
> A new version of I-D, draft-ietf-bfd-vxlan-12.txt
> has been successfully submitted by Greg Mirsky and posted to the
> IETF repository.
>
> Name:           draft-ietf-bfd-vxlan
> Revision:       12
> Title:          BFD for VXLAN
> Document date:  2020-05-25
> Group:          bfd
> Pages:          11
> URL:
> https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-12.txt
> Status:         https://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/
> Htmlized:       https://tools.ietf.org/html/draft-ietf-bfd-vxlan-12
> Htmlized:       https://datatracker.ietf.org/doc/html/draft-ietf-bfd-vxla=
n
> Diff:           https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-=
12
>
> Abstract:
>    This document describes the use of the Bidirectional Forwarding
>    Detection (BFD) protocol in point-to-point Virtual eXtensible Local
>    Area Network (VXLAN) tunnels used to form an overlay network.
>
>
>
>
> 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
>
>
>
>

--00000000000073530405a694b2b4
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Dear Carlos,<br><div>thank you for the suggested update. I=
 agree that it improves the text. Will include in the working version of th=
e draft for now.</div><div><br></div><div>Regards,</div><div>Greg</div></di=
v><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On M=
on, May 25, 2020 at 6:15 PM Carlos Pignataro (cpignata) &lt;<a href=3D"mail=
to:cpignata@cisco.com">cpignata@cisco.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 style=3D"overflow-wrap: break=
-word;">Thank you, Greg.<div><br></div><div>I only looked at the update to =
the last paragraph of Section 6.</div><div><br></div><div>Reading through t=
he last paragraph of Section 6, the text is not fully clear. There are a fe=
w nits, including a missing article, /as long as/as well as/, /is/are/, and=
 missing preposition which results in an incorrect pointer.=C2=A0</div><div=
><br></div><div>I=E2=80=99d suggest, for your consideration:</div><div><br>=
</div><div>OLD:</div><div><div>=C2=A0 =C2=A0Validation of TTL / Hop Limit o=
f the inner IP packet, as long as the</div><div>=C2=A0 =C2=A0related consid=
erations for BFD control packet demultiplexing and</div><div>=C2=A0 =C2=A0a=
uthentication, is performed as described in Section 5 [RFC5881].</div><br><=
br><div style=3D"color:rgb(0,0,0)">OLD:</div><div style=3D"color:rgb(0,0,0)=
"><div>=C2=A0 =C2=A0Validation of the TTL / Hop Limit field of the inner IP=
 packet, as=C2=A0</div><div>=C2=A0 =C2=A0well as the related considerations=
 for BFD control packet=C2=A0</div><div>=C2=A0 =C2=A0demultiplexing and aut=
hentication, are performed as described in=C2=A0</div><div>=C2=A0 =C2=A0Sec=
tion 5 of [RFC5881].</div><div><br></div><div>Best,</div><div><br></div><di=
v>Carlos.</div></div><div><br><blockquote type=3D"cite"><div>2020/05/25 =E5=
=8D=88=E5=BE=8C6:11=E3=80=81Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@g=
mail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt;=E3=81=AE=E3=83=A1=
=E3=83=BC=E3=83=AB:</div><br><div><div dir=3D"ltr">Dear Carlos,<div>thank y=
ou for your comments and suggestions. I hope that the updated version of th=
e draft addresses your comments. Please let me know whether I&#39;ve captur=
ed them all correctly.</div><div><br></div><div>Dear Jeff and Reshad,</div>=
<div>I believe that all action points from the IESG reviews and discussions=
 are reflected in the current version. I much appreciate your consideration=
 and suggestion on the next steps to progress this document.</div><div><br>=
</div><div>Regards,</div><div>Greg<br><br><div class=3D"gmail_quote"><div c=
lass=3D"gmail_attr" dir=3D"ltr">---------- Forwarded message ---------<br>F=
rom: <span dir=3D"auto">&lt;<a href=3D"mailto:internet-drafts@ietf.org" tar=
get=3D"_blank">internet-drafts@ietf.org</a>&gt;</span><br>Date: Mon, May 25=
, 2020 at 3:00 PM<br>Subject: New Version Notification for draft-ietf-bfd-v=
xlan-12.txt<br>To: Sudarsan Paragiri &lt;<a href=3D"mailto:sudarsan.225@gma=
il.com" target=3D"_blank">sudarsan.225@gmail.com</a>&gt;, Mallik Mudigonda =
&lt;<a href=3D"mailto:mmudigon@cisco.com" target=3D"_blank">mmudigon@cisco.=
com</a>&gt;, Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" targe=
t=3D"_blank">gregimirsky@gmail.com</a>&gt;, Vengada Prasad Govindan &lt;<a =
href=3D"mailto:venggovi@cisco.com" target=3D"_blank">venggovi@cisco.com</a>=
&gt;, Santosh Pallagatti &lt;<a href=3D"mailto:santosh.pallagatti@gmail.com=
" target=3D"_blank">santosh.pallagatti@gmail.com</a>&gt;<br></div><br><br><=
br>
A new version of I-D, draft-ietf-bfd-vxlan-12.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-bfd-vxlan<br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A012<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 BFD for VXLAN<br>
Document date:=C2=A0 2020-05-25<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 bfd<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 11<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a rel=3D"noreferrer" href=3D=
"https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-12.txt" target=
=3D"_blank">https://www.ietf.org/internet-drafts/draft-ietf-bfd-vxlan-12.tx=
t</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a rel=3D"noreferrer" href=3D"http=
s://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/" target=3D"_blank">https=
://datatracker.ietf.org/doc/draft-ietf-bfd-vxlan/</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a rel=3D"noreferrer" href=3D"https://t=
ools.ietf.org/html/draft-ietf-bfd-vxlan-12" target=3D"_blank">https://tools=
.ietf.org/html/draft-ietf-bfd-vxlan-12</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a rel=3D"noreferrer" href=3D"https://d=
atatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan" target=3D"_blank">https:=
//datatracker.ietf.org/doc/html/draft-ietf-bfd-vxlan</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a rel=3D"noreferrer" href=3D=
"https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-12" target=3D"_bl=
ank">https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-bfd-vxlan-12</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes the use of the Bidirectional Forwardin=
g<br>
=C2=A0 =C2=A0Detection (BFD) protocol in point-to-point Virtual eXtensible =
Local<br>
=C2=A0 =C2=A0Area Network (VXLAN) tunnels used to form an overlay network.<=
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 rel=3D"noreferrer" =
href=3D"http://tools.ietf.org/" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
<br>
</div></div></div>
</div></blockquote></div><br></div></div></blockquote></div>

--00000000000073530405a694b2b4--


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From nobody Thu May 28 07:25:35 2020
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From: IETF Meeting Session Request Tool <session-request@ietf.org>
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Cc: rrahman@cisco.com, rtg-bfd@ietf.org, bfd-chairs@ietf.org, martin.vigoureux@nokia.com
Subject: bfd - New Meeting Session Request for IETF 108
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A new meeting session request has just been submitted by Reshad Rahman, a Chair of the bfd working group.


---------------------------------------------------------
Working Group Name: Bidirectional Forwarding Detection
Area Name: Routing Area
Session Requester: Reshad Rahman


Number of Sessions: 1
Length of Session(s):  50 Minutes
Number of Attendees: 50
Conflicts to Avoid: 
 Chair Conflict: idr grow rtgwg bess lisp netmod netconf
 Technology Overlap: bier spring mpls teas pals sfc
 Key Participant Conflict: ccamp





People who must be present:
  Jeffrey Haas
  Reshad Rahman
  Martin Vigoureux

Resources Requested:

Special Requests:
  
---------------------------------------------------------


