
From nobody Mon Apr  4 09:36:42 2016
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From: "Mirja Kuehlewind (IETF)" <ietf@kuehlewind.net>
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To: "Mirja Kuehlewind (IETF)" <ietf@kuehlewind.net>
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Cc: tsv-art@ietf.org, tsv-chairs@ietf.org, tsv-ads@ietf.org
Subject: Re: [Tsv-art] TSV Dinner on Monday April 4
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Hi all,

here are the details for our dinner reservation tonight:

Restaurant: Brasas Argentinas
Place: Av. Alicia Moreau de Justo 1108
Time: 20:30  (08:30 PM)
Map: <https://goo.gl/maps/52MQobE9YDS2>
Phone: +54 11 4331-4386

Cost: $205 per person, plus beverages (beverages are paid separately).
Have to pay in cash (i.e., please make sure to have pesos available)

Type: It's an "eat as much as you want" kind of restaurant, with lots of
different stuff to eat, and includes grilled beef.

Please come either directly to the restaurant or meet us at 8:10 in the =
Hilton lobby to walk together to the restaurant.

If you would still like to join and did not put your name in the doodle =
previously, please let us know such that we can make sure that there is =
enough space.

Thanks to Fernando Gont for finding the restaurant and supporting us!

See you later,
Mirja, Martin, and Spencer


> Am 21.03.2016 um 12:17 schrieb Mirja Kuehlewind (IETF) =
<ietf@kuehlewind.net>:
>=20
> Hi all,
>=20
> we will have a TSV dinner on Monday night and would like to invite all =
TSV chairs as well as the members of the new TSV ART to join. Please =
fill the doodle below as an estimate for how many people we need to make =
the reservation:
>=20
> http://doodle.com/poll/dk3e9r9rag6ytat6
>=20
> Further instructions on the restaurant and meeting point will follow!
>=20
> See you all in BA!
> Mirja, Spencer, and Martin
>=20


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To: tsv-art@ietf.org
From: Martin Stiemerling <mls.ietf@gmail.com>
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Date: Tue, 19 Apr 2016 17:30:03 +0200
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Subject: [Tsv-art] Looking for a reviewr for 3 BFD documents
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Dear all,

Here comes the first request for the TSVART. There are three BFD drafts 
that need a bit of TSV care:

(1) draft-ietf-bfd-seamless-base
(1) draft-ietf-bfd-seamless-ip
(1) draft-ietf-bfd-seamless-use-case

Anybody volunteering to take all three as one pack?

BFD had issues in the past in forgetting to care about congestion 
handling a bit. RFC 5880 has good words, pushed by the ADs at the time 
of the publication, about congestion handling.

Looking forward to a volunteer!

Thanks,

   Martin (for the TSV triage team)


From nobody Mon Apr 25 07:29:00 2016
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From: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
To: tsv-art@ietf.org
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Subject: [Tsv-art] Common TSV issues
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--001a114bb6f42e0fad05314fffc3
Content-Type: text/plain; charset=UTF-8

Dear TSV-ART,

So, Mirja and I would like to let the community know what common TSV issues
the TSV-ART will be looking for, and we'd like to get your feedback on the
current issues list, which is at
http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues, before
we send that out.

If you could take a look at the current TSV issues, list, and let us know
if you think changes are needed by May 9, that would be great!

Thanks,

Spencer and Mirja

--001a114bb6f42e0fad05314fffc3
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Dear TSV-ART,<div><br></div><div>So, Mirja and I would lik=
e to let the community know what common TSV issues the TSV-ART will be look=
ing for, and we&#39;d like to get your feedback on the current issues list,=
 which is at=C2=A0<span style=3D"color:rgb(0,0,0);font-family:arial,sans,sa=
ns-serif;font-size:13px;line-height:13px;white-space:pre-wrap"><a href=3D"h=
ttp://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues">http://t=
rac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues</a>, before we s=
end that out.</span><div><span style=3D"color:rgb(0,0,0);font-family:arial,=
sans,sans-serif;font-size:13px;line-height:13px;white-space:pre-wrap"><br><=
/span></div><div><span style=3D"color:rgb(0,0,0);font-family:arial,sans,san=
s-serif;font-size:13px;line-height:13px;white-space:pre-wrap">If you could =
take a look at the current TSV issues, list, and let us know if you think c=
hanges are needed by May 9, that would be great!</span></div><div><span sty=
le=3D"color:rgb(0,0,0);font-family:arial,sans,sans-serif;font-size:13px;lin=
e-height:13px;white-space:pre-wrap"><br></span></div><div><span style=3D"co=
lor:rgb(0,0,0);font-family:arial,sans,sans-serif;font-size:13px;line-height=
:13px;white-space:pre-wrap">Thanks,</span></div><div><span style=3D"color:r=
gb(0,0,0);font-family:arial,sans,sans-serif;font-size:13px;line-height:13px=
;white-space:pre-wrap"><br></span></div><div><span style=3D"color:rgb(0,0,0=
);font-family:arial,sans,sans-serif;font-size:13px;line-height:13px;white-s=
pace:pre-wrap">Spencer and Mirja</span></div></div></div>

--001a114bb6f42e0fad05314fffc3--


From nobody Mon Apr 25 11:19:40 2016
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From: "Black, David" <david.black@emc.com>
To: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>, "tsv-art@ietf.org" <tsv-art@ietf.org>
Thread-Topic: [Tsv-art] Common TSV issues
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Subject: Re: [Tsv-art] Common TSV issues
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Date: Mon, 25 Apr 2016 14:03:16 -0500
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From: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
To: "Black, David" <david.black@emc.com>
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Subject: Re: [Tsv-art] Common TSV issues
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--001a114bb6f43f55cc053153d460
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Hi, David,

On Mon, Apr 25, 2016 at 1:19 PM, Black, David <david.black@emc.com> wrote:

> Hi Spencer,
>
>
>
> Here are a few suggestions:
>
>
>
> -- Use of UDP
>
>
>
> I=E2=80=99d reference the rfc5405bis draft for which publication has been
> requested in addition to RFC 5405, as it contains a lot of added content
> (this should be =E2=80=9Cinstead of RFC 5405=E2=80=9D after IESG approval=
 of the bis
> draft).  There are a lot of things in this draft that could be called out
> e.g., reinvention of congestion control is strongly discouraged.
>

Thanks for the other suggestions, too, but 5405bis was so obvious that I
feel like a moron for not updating the checklist to include it :-)

Others?

Spencer


> We now recognize =E2=80=9CControlled Environments=E2=80=9D as restricted
> deployment/applicability scenarios where general Internet requirements
> (e.g., for congestion control) may be relaxed under suitable (e.g.,
> operator) control - see section 3.6 of the rfc5405bis draft for discussio=
n
> and RFC 7510 (MPLS/UDP) for a worked example.
>
>
>
> Use of zero UDP checksums with IPv6 is subtle and requires design
> attention - see RFC 6935 and 6936.  Note that these two RFCs contain desi=
gn
> requirements, so it=E2=80=99s insufficient to just normatively reference =
those two
> RFCs and impose their requirements - an explanation of how the protocol
> design (for zero UDP checksums with IPv6 meets those requirements is
> needed).  RFC 7510 is also a worked example here, and its content on this
> topic is not short.
>
>
>
> -- PDU Sizes
>
>
>
> I=E2=80=99d add a discussion of PMTUD and PLPMTUD, including noting that =
use of
> the latter needs to include an explanation of how.  Use of the former nee=
ds
> to be cognizant of the general unreliability of ICMP Packet Too Big
> notifications, especially when sent upstream from within a tunnel (may no=
t
> propagate across ingress).
>
>
>
> -- Multicast
>
>
>
> Many of the concerns may be exacerbated by multicast - perhaps someone wh=
o
> spends more time on multicast than I do could come up with a short list o=
f
> things to watch out for.
>
>
>
> Thanks, --David
>
>
>
> *From:* Tsv-art [mailto:tsv-art-bounces@ietf.org] *On Behalf Of *Spencer
> Dawkins at IETF
> *Sent:* Monday, April 25, 2016 10:29 AM
> *To:* tsv-art@ietf.org
> *Subject:* [Tsv-art] Common TSV issues
>
>
>
> Dear TSV-ART,
>
>
>
> So, Mirja and I would like to let the community know what common TSV
> issues the TSV-ART will be looking for, and we'd like to get your feedbac=
k
> on the current issues list, which is at
> http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues,
> before we send that out.
>
>
>
> If you could take a look at the current TSV issues, list, and let us know
> if you think changes are needed by May 9, that would be great!
>
>
>
> Thanks,
>
>
>
> Spencer and Mirja
>

--001a114bb6f43f55cc053153d460
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi, David,<div class=3D"gmail_extra"><br><div class=3D"gma=
il_quote">On Mon, Apr 25, 2016 at 1:19 PM, Black, David <span dir=3D"ltr">&=
lt;<a href=3D"mailto:david.black@emc.com" target=3D"_blank">david.black@emc=
.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">Hi Spencer,<u></u><u></u>=
</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">Here are a few suggestion=
s:<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">-- Use of UDP<u></u><u></=
u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">I=E2=80=99d reference the=
 rfc5405bis draft for which publication has been requested in addition to R=
FC 5405, as it contains a lot of added content (this should be =E2=80=9Cins=
tead
 of RFC 5405=E2=80=9D after IESG approval of the bis draft).=C2=A0 There ar=
e a lot of things in this draft that could be called out e.g., reinvention =
of congestion control is strongly discouraged.</span></p></div></div></bloc=
kquote><div><br></div><div>Thanks for the other suggestions, too, but 5405b=
is was so obvious that I feel like a moron for not updating the checklist t=
o include it :-)</div><div><br></div><div>Others?</div><div><br></div><div>=
Spencer</div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang=3D"E=
N-US" link=3D"blue" vlink=3D"purple"><div><p class=3D"MsoNormal"><span styl=
e=3D"color:rgb(31,73,125);font-family:Calibri,sans-serif;font-size:11pt">We=
 now recognize =E2=80=9CControlled Environments=E2=80=9D as restricted depl=
oyment/applicability scenarios where general Internet requirements (e.g., f=
or congestion control)
 may be relaxed under suitable (e.g., operator) control - see section 3.6 o=
f the rfc5405bis draft for discussion and RFC 7510 (MPLS/UDP) for a worked =
example.</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">Use of zero UDP checksums=
 with IPv6 is subtle and requires design attention - see RFC 6935 and 6936.=
=C2=A0 Note that these two RFCs contain design requirements,
 so it=E2=80=99s insufficient to just normatively reference those two RFCs =
and impose their requirements - an explanation of how the protocol design (=
for zero UDP checksums with IPv6 meets those requirements is needed).=C2=A0=
 RFC 7510 is also a worked example here, and
 its content on this topic is not short.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">-- PDU Sizes<u></u><u></u=
></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">I=E2=80=99d add a discuss=
ion of PMTUD and PLPMTUD, including noting that use of the latter needs to =
include an explanation of how.=C2=A0 Use of the former needs to be cognizan=
t
 of the general unreliability of ICMP Packet Too Big notifications, especia=
lly when sent upstream from within a tunnel (may not propagate across ingre=
ss).<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">-- Multicast<u></u><u></u=
></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">Many of the concerns may =
be exacerbated by multicast - perhaps someone who spends more time on multi=
cast than I do could come up with a short list of things
 to watch out for.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">Thanks, --David<u></u><u>=
</u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d"><u></u>=C2=A0<u></u></spa=
n></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Tsv-art =
[mailto:<a href=3D"mailto:tsv-art-bounces@ietf.org" target=3D"_blank">tsv-a=
rt-bounces@ietf.org</a>]
<b>On Behalf Of </b>Spencer Dawkins at IETF<br>
<b>Sent:</b> Monday, April 25, 2016 10:29 AM<br>
<b>To:</b> <a href=3D"mailto:tsv-art@ietf.org" target=3D"_blank">tsv-art@ie=
tf.org</a><br>
<b>Subject:</b> [Tsv-art] Common TSV issues<u></u><u></u></span></p>
</div>
</div><div><div class=3D"h5">
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Dear TSV-ART,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">So, Mirja and I would like to let the community know=
 what common TSV issues the TSV-ART will be looking for, and we&#39;d like =
to get your feedback on the current issues list, which is at=C2=A0<span sty=
le=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;=
;color:black"><a href=3D"http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvd=
ir-common-issues" target=3D"_blank">http://trac.tools.ietf.org/area/tsv/tra=
c/wiki/tsvdir-common-issues</a>,
 before we send that out.</span><u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;;color:black">If you could take a look at t=
he current TSV issues, list, and let us know if you think changes are neede=
d by May 9, that would be great!</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;;color:black">Thanks,</span><u></u><u></u><=
/p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;;color:black">Spencer and Mirja</span><u></=
u><u></u></p>
</div>
</div>
</div>
</div></div></div>
</div>
</div>

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

--001a114bb6f43f55cc053153d460--


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To: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>, "Black, David" <david.black@emc.com>
References: <CAKKJt-cVf4tmB4YEzagDaugQPcJNevXR+o58UU7001-FfK5ZBg@mail.gmail.com> <CE03DB3D7B45C245BCA0D243277949362E97FE5D@MX104CL02.corp.emc.com> <CAKKJt-f9U=zwELEi=f3vzsLYkVRHf-zyX=kN+2C2+28SZDearw@mail.gmail.com>
From: Joe Touch <touch@isi.edu>
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Subject: Re: [Tsv-art] Common TSV issues
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FWIW - I added a handful of things this AM...

Joe

On 4/25/2016 12:03 PM, Spencer Dawkins at IETF wrote:
> Hi, David,
>
> On Mon, Apr 25, 2016 at 1:19 PM, Black, David <david.black@emc.com
> <mailto:david.black@emc.com>> wrote:
>
>     Hi Spencer,
>
>      
>
>     Here are a few suggestions:
>
>      
>
>     -- Use of UDP
>
>      
>
>     I’d reference the rfc5405bis draft for which publication has been
>     requested in addition to RFC 5405, as it contains a lot of added
>     content (this should be “instead of RFC 5405” after IESG approval
>     of the bis draft).  There are a lot of things in this draft that
>     could be called out e.g., reinvention of congestion control is
>     strongly discouraged.
>
>
> Thanks for the other suggestions, too, but 5405bis was so obvious that
> I feel like a moron for not updating the checklist to include it :-)
>
> Others?
>
> Spencer
>  
>
>     We now recognize “Controlled Environments” as restricted
>     deployment/applicability scenarios where general Internet
>     requirements (e.g., for congestion control) may be relaxed under
>     suitable (e.g., operator) control - see section 3.6 of the
>     rfc5405bis draft for discussion and RFC 7510 (MPLS/UDP) for a
>     worked example.
>
>      
>
>     Use of zero UDP checksums with IPv6 is subtle and requires design
>     attention - see RFC 6935 and 6936.  Note that these two RFCs
>     contain design requirements, so it’s insufficient to just
>     normatively reference those two RFCs and impose their requirements
>     - an explanation of how the protocol design (for zero UDP
>     checksums with IPv6 meets those requirements is needed).  RFC 7510
>     is also a worked example here, and its content on this topic is
>     not short.
>
>      
>
>     -- PDU Sizes
>
>      
>
>     I’d add a discussion of PMTUD and PLPMTUD, including noting that
>     use of the latter needs to include an explanation of how.  Use of
>     the former needs to be cognizant of the general unreliability of
>     ICMP Packet Too Big notifications, especially when sent upstream
>     from within a tunnel (may not propagate across ingress).
>
>      
>
>     -- Multicast
>
>      
>
>     Many of the concerns may be exacerbated by multicast - perhaps
>     someone who spends more time on multicast than I do could come up
>     with a short list of things to watch out for.
>
>      
>
>     Thanks, --David
>
>      
>
>     *From:*Tsv-art [mailto:tsv-art-bounces@ietf.org
>     <mailto:tsv-art-bounces@ietf.org>] *On Behalf Of *Spencer Dawkins
>     at IETF
>     *Sent:* Monday, April 25, 2016 10:29 AM
>     *To:* tsv-art@ietf.org <mailto:tsv-art@ietf.org>
>     *Subject:* [Tsv-art] Common TSV issues
>
>      
>
>     Dear TSV-ART,
>
>      
>
>     So, Mirja and I would like to let the community know what common
>     TSV issues the TSV-ART will be looking for, and we'd like to get
>     your feedback on the current issues list, which is
>     at http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues,
>     before we send that out.
>
>      
>
>     If you could take a look at the current TSV issues, list, and let
>     us know if you think changes are needed by May 9, that would be great!
>
>      
>
>     Thanks,
>
>      
>
>     Spencer and Mirja
>
>
>
>
> _______________________________________________
> Tsv-art mailing list
> Tsv-art@ietf.org
> https://www.ietf.org/mailman/listinfo/tsv-art


--------------030803080204070906000108
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<html>
  <head>
    <meta content="text/html; charset=windows-1252"
      http-equiv="Content-Type">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    FWIW - I added a handful of things this AM...<br>
    <br>
    Joe<br>
    <br>
    <div class="moz-cite-prefix">On 4/25/2016 12:03 PM, Spencer Dawkins
      at IETF wrote:<br>
    </div>
    <blockquote
cite="mid:CAKKJt-f9U=zwELEi=f3vzsLYkVRHf-zyX=kN+2C2+28SZDearw@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hi, David,
        <div class="gmail_extra"><br>
          <div class="gmail_quote">On Mon, Apr 25, 2016 at 1:19 PM,
            Black, David <span dir="ltr">&lt;<a moz-do-not-send="true"
                href="mailto:david.black@emc.com" target="_blank">david.black@emc.com</a>&gt;</span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <div link="blue" vlink="purple" lang="EN-US">
                <div>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Hi
                      Spencer,</span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Here
                      are a few suggestions:</span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">--
                      Use of UDP</span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">I’d
                      reference the rfc5405bis draft for which
                      publication has been requested in addition to RFC
                      5405, as it contains a lot of added content (this
                      should be “instead of RFC 5405” after IESG
                      approval of the bis draft).  There are a lot of
                      things in this draft that could be called out
                      e.g., reinvention of congestion control is
                      strongly discouraged.</span></p>
                </div>
              </div>
            </blockquote>
            <div><br>
            </div>
            <div>Thanks for the other suggestions, too, but 5405bis was
              so obvious that I feel like a moron for not updating the
              checklist to include it :-)</div>
            <div><br>
            </div>
            <div>Others?</div>
            <div><br>
            </div>
            <div>Spencer</div>
            <div> </div>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <div link="blue" vlink="purple" lang="EN-US">
                <div>
                  <p class="MsoNormal"><span
style="color:rgb(31,73,125);font-family:Calibri,sans-serif;font-size:11pt">We
                      now recognize “Controlled Environments” as
                      restricted deployment/applicability scenarios
                      where general Internet requirements (e.g., for
                      congestion control) may be relaxed under suitable
                      (e.g., operator) control - see section 3.6 of the
                      rfc5405bis draft for discussion and RFC 7510
                      (MPLS/UDP) for a worked example.</span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Use
                      of zero UDP checksums with IPv6 is subtle and
                      requires design attention - see RFC 6935 and
                      6936.  Note that these two RFCs contain design
                      requirements, so it’s insufficient to just
                      normatively reference those two RFCs and impose
                      their requirements - an explanation of how the
                      protocol design (for zero UDP checksums with IPv6
                      meets those requirements is needed).  RFC 7510 is
                      also a worked example here, and its content on
                      this topic is not short.</span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">--
                      PDU Sizes</span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">I’d
                      add a discussion of PMTUD and PLPMTUD, including
                      noting that use of the latter needs to include an
                      explanation of how.  Use of the former needs to be
                      cognizant of the general unreliability of ICMP
                      Packet Too Big notifications, especially when sent
                      upstream from within a tunnel (may not propagate
                      across ingress).</span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">--
                      Multicast</span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Many
                      of the concerns may be exacerbated by multicast -
                      perhaps someone who spends more time on multicast
                      than I do could come up with a short list of
                      things to watch out for.</span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Thanks,
                      --David</span></p>
                  <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                  <div style="border:none;border-left:solid blue
                    1.5pt;padding:0in 0in 0in 4.0pt">
                    <div>
                      <div style="border:none;border-top:solid #b5c4df
                        1.0pt;padding:3.0pt 0in 0in 0in">
                        <p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span
style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">
                            Tsv-art [mailto:<a moz-do-not-send="true"
                              href="mailto:tsv-art-bounces@ietf.org"
                              target="_blank">tsv-art-bounces@ietf.org</a>]
                            <b>On Behalf Of </b>Spencer Dawkins at IETF<br>
                            <b>Sent:</b> Monday, April 25, 2016 10:29 AM<br>
                            <b>To:</b> <a moz-do-not-send="true"
                              href="mailto:tsv-art@ietf.org"
                              target="_blank">tsv-art@ietf.org</a><br>
                            <b>Subject:</b> [Tsv-art] Common TSV issues</span></p>
                      </div>
                    </div>
                    <div>
                      <div class="h5">
                        <p class="MsoNormal"> </p>
                        <div>
                          <p class="MsoNormal">Dear TSV-ART,</p>
                          <div>
                            <p class="MsoNormal"> </p>
                          </div>
                          <div>
                            <p class="MsoNormal">So, Mirja and I would
                              like to let the community know what common
                              TSV issues the TSV-ART will be looking
                              for, and we'd like to get your feedback on
                              the current issues list, which is at <span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><a
                                  moz-do-not-send="true"
href="http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues"
                                  target="_blank"><a class="moz-txt-link-freetext" href="http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues">http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues</a></a>,
                                before we send that out.</span></p>
                            <div>
                              <p class="MsoNormal"> </p>
                            </div>
                            <div>
                              <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">If
                                  you could take a look at the current
                                  TSV issues, list, and let us know if
                                  you think changes are needed by May 9,
                                  that would be great!</span></p>
                            </div>
                            <div>
                              <p class="MsoNormal"> </p>
                            </div>
                            <div>
                              <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Thanks,</span></p>
                            </div>
                            <div>
                              <p class="MsoNormal"> </p>
                            </div>
                            <div>
                              <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Spencer
                                  and Mirja</span></p>
                            </div>
                          </div>
                        </div>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </blockquote>
          </div>
          <br>
        </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
Tsv-art mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Tsv-art@ietf.org">Tsv-art@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/tsv-art">https://www.ietf.org/mailman/listinfo/tsv-art</a>
</pre>
    </blockquote>
    <br>
  </body>
</html>

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To: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>, "Black, David" <david.black@emc.com>
References: <CAKKJt-cVf4tmB4YEzagDaugQPcJNevXR+o58UU7001-FfK5ZBg@mail.gmail.com> <CE03DB3D7B45C245BCA0D243277949362E97FE5D@MX104CL02.corp.emc.com> <CAKKJt-f9U=zwELEi=f3vzsLYkVRHf-zyX=kN+2C2+28SZDearw@mail.gmail.com> <571E716A.6050609@isi.edu>
From: Joe Touch <touch@isi.edu>
Message-ID: <571E94F3.2090505@isi.edu>
Date: Mon, 25 Apr 2016 15:06:43 -0700
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Subject: Re: [Tsv-art] Common TSV issues
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Also, it might be good to consider reorganzing the list into some sort
of taxonomy. I had a draft of this sort of thing I had been preparing
for TSV-AREA at one point. Let me know if it would be useful to dig out.

Joe

On 4/25/2016 12:35 PM, Joe Touch wrote:
> FWIW - I added a handful of things this AM...
>
> Joe
>
> On 4/25/2016 12:03 PM, Spencer Dawkins at IETF wrote:
>> Hi, David,
>>
>> On Mon, Apr 25, 2016 at 1:19 PM, Black, David <david.black@emc.com
>> <mailto:david.black@emc.com>> wrote:
>>
>>     Hi Spencer,
>>
>>      
>>
>>     Here are a few suggestions:
>>
>>      
>>
>>     -- Use of UDP
>>
>>      
>>
>>     I’d reference the rfc5405bis draft for which publication has been
>>     requested in addition to RFC 5405, as it contains a lot of added
>>     content (this should be “instead of RFC 5405” after IESG approval
>>     of the bis draft).  There are a lot of things in this draft that
>>     could be called out e.g., reinvention of congestion control is
>>     strongly discouraged.
>>
>>
>> Thanks for the other suggestions, too, but 5405bis was so obvious
>> that I feel like a moron for not updating the checklist to include it :-)
>>
>> Others?
>>
>> Spencer
>>  
>>
>>     We now recognize “Controlled Environments” as restricted
>>     deployment/applicability scenarios where general Internet
>>     requirements (e.g., for congestion control) may be relaxed under
>>     suitable (e.g., operator) control - see section 3.6 of the
>>     rfc5405bis draft for discussion and RFC 7510 (MPLS/UDP) for a
>>     worked example.
>>
>>      
>>
>>     Use of zero UDP checksums with IPv6 is subtle and requires design
>>     attention - see RFC 6935 and 6936.  Note that these two RFCs
>>     contain design requirements, so it’s insufficient to just
>>     normatively reference those two RFCs and impose their
>>     requirements - an explanation of how the protocol design (for
>>     zero UDP checksums with IPv6 meets those requirements is
>>     needed).  RFC 7510 is also a worked example here, and its content
>>     on this topic is not short.
>>
>>      
>>
>>     -- PDU Sizes
>>
>>      
>>
>>     I’d add a discussion of PMTUD and PLPMTUD, including noting that
>>     use of the latter needs to include an explanation of how.  Use of
>>     the former needs to be cognizant of the general unreliability of
>>     ICMP Packet Too Big notifications, especially when sent upstream
>>     from within a tunnel (may not propagate across ingress).
>>
>>      
>>
>>     -- Multicast
>>
>>      
>>
>>     Many of the concerns may be exacerbated by multicast - perhaps
>>     someone who spends more time on multicast than I do could come up
>>     with a short list of things to watch out for.
>>
>>      
>>
>>     Thanks, --David
>>
>>      
>>
>>     *From:*Tsv-art [mailto:tsv-art-bounces@ietf.org
>>     <mailto:tsv-art-bounces@ietf.org>] *On Behalf Of *Spencer Dawkins
>>     at IETF
>>     *Sent:* Monday, April 25, 2016 10:29 AM
>>     *To:* tsv-art@ietf.org <mailto:tsv-art@ietf.org>
>>     *Subject:* [Tsv-art] Common TSV issues
>>
>>      
>>
>>     Dear TSV-ART,
>>
>>      
>>
>>     So, Mirja and I would like to let the community know what common
>>     TSV issues the TSV-ART will be looking for, and we'd like to get
>>     your feedback on the current issues list, which is
>>     at http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues,
>>     before we send that out.
>>
>>      
>>
>>     If you could take a look at the current TSV issues, list, and let
>>     us know if you think changes are needed by May 9, that would be
>>     great!
>>
>>      
>>
>>     Thanks,
>>
>>      
>>
>>     Spencer and Mirja
>>
>>
>>
>>
>> _______________________________________________
>> Tsv-art mailing list
>> Tsv-art@ietf.org
>> https://www.ietf.org/mailman/listinfo/tsv-art
>


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<html>
  <head>
    <meta content="text/html; charset=windows-1252"
      http-equiv="Content-Type">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    Also, it might be good to consider reorganzing the list into some
    sort of taxonomy. I had a draft of this sort of thing I had been
    preparing for TSV-AREA at one point. Let me know if it would be
    useful to dig out.<br>
    <br>
    Joe<br>
    <br>
    <div class="moz-cite-prefix">On 4/25/2016 12:35 PM, Joe Touch wrote:<br>
    </div>
    <blockquote cite="mid:571E716A.6050609@isi.edu" type="cite">
      <meta content="text/html; charset=windows-1252"
        http-equiv="Content-Type">
      FWIW - I added a handful of things this AM...<br>
      <br>
      Joe<br>
      <br>
      <div class="moz-cite-prefix">On 4/25/2016 12:03 PM, Spencer
        Dawkins at IETF wrote:<br>
      </div>
      <blockquote
cite="mid:CAKKJt-f9U=zwELEi=f3vzsLYkVRHf-zyX=kN+2C2+28SZDearw@mail.gmail.com"
        type="cite">
        <div dir="ltr">Hi, David,
          <div class="gmail_extra"><br>
            <div class="gmail_quote">On Mon, Apr 25, 2016 at 1:19 PM,
              Black, David <span dir="ltr">&lt;<a
                  moz-do-not-send="true"
                  href="mailto:david.black@emc.com" target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:david.black@emc.com">david.black@emc.com</a></a>&gt;</span>
              wrote:<br>
              <blockquote class="gmail_quote" style="margin:0 0 0
                .8ex;border-left:1px #ccc solid;padding-left:1ex">
                <div link="blue" vlink="purple" lang="EN-US">
                  <div>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Hi

                        Spencer,</span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Here

                        are a few suggestions:</span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">--

                        Use of UDP</span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">I’d

                        reference the rfc5405bis draft for which
                        publication has been requested in addition to
                        RFC 5405, as it contains a lot of added content
                        (this should be “instead of RFC 5405” after IESG
                        approval of the bis draft).  There are a lot of
                        things in this draft that could be called out
                        e.g., reinvention of congestion control is
                        strongly discouraged.</span></p>
                  </div>
                </div>
              </blockquote>
              <div><br>
              </div>
              <div>Thanks for the other suggestions, too, but 5405bis
                was so obvious that I feel like a moron for not updating
                the checklist to include it :-)</div>
              <div><br>
              </div>
              <div>Others?</div>
              <div><br>
              </div>
              <div>Spencer</div>
              <div> </div>
              <blockquote class="gmail_quote" style="margin:0 0 0
                .8ex;border-left:1px #ccc solid;padding-left:1ex">
                <div link="blue" vlink="purple" lang="EN-US">
                  <div>
                    <p class="MsoNormal"><span
style="color:rgb(31,73,125);font-family:Calibri,sans-serif;font-size:11pt">We

                        now recognize “Controlled Environments” as
                        restricted deployment/applicability scenarios
                        where general Internet requirements (e.g., for
                        congestion control) may be relaxed under
                        suitable (e.g., operator) control - see section
                        3.6 of the rfc5405bis draft for discussion and
                        RFC 7510 (MPLS/UDP) for a worked example.</span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Use

                        of zero UDP checksums with IPv6 is subtle and
                        requires design attention - see RFC 6935 and
                        6936.  Note that these two RFCs contain design
                        requirements, so it’s insufficient to just
                        normatively reference those two RFCs and impose
                        their requirements - an explanation of how the
                        protocol design (for zero UDP checksums with
                        IPv6 meets those requirements is needed).  RFC
                        7510 is also a worked example here, and its
                        content on this topic is not short.</span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">--

                        PDU Sizes</span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">I’d

                        add a discussion of PMTUD and PLPMTUD, including
                        noting that use of the latter needs to include
                        an explanation of how.  Use of the former needs
                        to be cognizant of the general unreliability of
                        ICMP Packet Too Big notifications, especially
                        when sent upstream from within a tunnel (may not
                        propagate across ingress).</span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">--

                        Multicast</span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Many

                        of the concerns may be exacerbated by multicast
                        - perhaps someone who spends more time on
                        multicast than I do could come up with a short
                        list of things to watch out for.</span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">Thanks,

                        --David</span></p>
                    <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d"> </span></p>
                    <div style="border:none;border-left:solid blue
                      1.5pt;padding:0in 0in 0in 4.0pt">
                      <div>
                        <div style="border:none;border-top:solid #b5c4df
                          1.0pt;padding:3.0pt 0in 0in 0in">
                          <p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span
style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">
                              Tsv-art [mailto:<a moz-do-not-send="true"
                                href="mailto:tsv-art-bounces@ietf.org"
                                target="_blank">tsv-art-bounces@ietf.org</a>]
                              <b>On Behalf Of </b>Spencer Dawkins at
                              IETF<br>
                              <b>Sent:</b> Monday, April 25, 2016 10:29
                              AM<br>
                              <b>To:</b> <a moz-do-not-send="true"
                                href="mailto:tsv-art@ietf.org"
                                target="_blank">tsv-art@ietf.org</a><br>
                              <b>Subject:</b> [Tsv-art] Common TSV
                              issues</span></p>
                        </div>
                      </div>
                      <div>
                        <div class="h5">
                          <p class="MsoNormal"> </p>
                          <div>
                            <p class="MsoNormal">Dear TSV-ART,</p>
                            <div>
                              <p class="MsoNormal"> </p>
                            </div>
                            <div>
                              <p class="MsoNormal">So, Mirja and I would
                                like to let the community know what
                                common TSV issues the TSV-ART will be
                                looking for, and we'd like to get your
                                feedback on the current issues list,
                                which is at <span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black"><a
                                    moz-do-not-send="true"
                                    class="moz-txt-link-freetext"
href="http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues"><a class="moz-txt-link-freetext" href="http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues">http://trac.tools.ietf.org/area/tsv/trac/wiki/tsvdir-common-issues</a></a>,
                                  before we send that out.</span></p>
                              <div>
                                <p class="MsoNormal"> </p>
                              </div>
                              <div>
                                <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">If

                                    you could take a look at the current
                                    TSV issues, list, and let us know if
                                    you think changes are needed by May
                                    9, that would be great!</span></p>
                              </div>
                              <div>
                                <p class="MsoNormal"> </p>
                              </div>
                              <div>
                                <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Thanks,</span></p>
                              </div>
                              <div>
                                <p class="MsoNormal"> </p>
                              </div>
                              <div>
                                <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:black">Spencer

                                    and Mirja</span></p>
                              </div>
                            </div>
                          </div>
                        </div>
                      </div>
                    </div>
                  </div>
                </div>
              </blockquote>
            </div>
            <br>
          </div>
        </div>
        <br>
        <fieldset class="mimeAttachmentHeader"></fieldset>
        <br>
        <pre wrap="">_______________________________________________
Tsv-art mailing list
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      </blockquote>
      <br>
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From: "Black, David" <david.black@emc.com>
To: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
Thread-Topic: [Tsv-art] Common TSV issues
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I've added my relevant suggestions from this thread.

Thanks, --David

From: Joe Touch [mailto:touch@isi.edu]
Sent: Monday, April 25, 2016 6:07 PM
To: Spencer Dawkins at IETF; Black, David
Cc: touch@isi.edu; tsv-art@ietf.org
Subject: Re: [Tsv-art] Common TSV issues

Also, it might be good to consider reorganzing the list into some sort of t=
axonomy. I had a draft of this sort of thing I had been preparing for TSV-A=
REA at one point. Let me know if it would be useful to dig out.

Joe
On 4/25/2016 12:35 PM, Joe Touch wrote:
FWIW - I added a handful of things this AM...

Joe
On 4/25/2016 12:03 PM, Spencer Dawkins at IETF wrote:
Hi, David,

On Mon, Apr 25, 2016 at 1:19 PM, Black, David <david.black@emc.com<mailto:d=
avid.black@emc.com>> wrote:
Hi Spencer,

Here are a few suggestions:

-- Use of UDP

I'd reference the rfc5405bis draft for which publication has been requested=
 in addition to RFC 5405, as it contains a lot of added content (this shoul=
d be "instead of RFC 5405" after IESG approval of the bis draft).  There ar=
e a lot of things in this draft that could be called out e.g., reinvention =
of congestion control is strongly discouraged.

Thanks for the other suggestions, too, but 5405bis was so obvious that I fe=
el like a moron for not updating the checklist to include it :-)

Others?

Spencer

We now recognize "Controlled Environments" as restricted deployment/applica=
bility scenarios where general Internet requirements (e.g., for congestion =
control) may be relaxed under suitable (e.g., operator) control - see secti=
on 3.6 of the rfc5405bis draft for discussion and RFC 7510 (MPLS/UDP) for a=
 worked example.

Use of zero UDP checksums with IPv6 is subtle and requires design attention=
 - see RFC 6935 and 6936.  Note that these two RFCs contain design requirem=
ents, so it's insufficient to just normatively reference those two RFCs and=
 impose their requirements - an explanation of how the protocol design (for=
 zero UDP checksums with IPv6 meets those requirements is needed).  RFC 751=
0 is also a worked example here, and its content on this topic is not short=
.

-- PDU Sizes

I'd add a discussion of PMTUD and PLPMTUD, including noting that use of the=
 latter needs to include an explanation of how.  Use of the former needs to=
 be cognizant of the general unreliability of ICMP Packet Too Big notificat=
ions, especially when sent upstream from within a tunnel (may not propagate=
 across ingress).

-- Multicast

Many of the concerns may be exacerbated by multicast - perhaps someone who =
spends more time on multicast than I do could come up with a short list of =
things to watch out for.

Thanks, --David

From: Tsv-art [mailto:tsv-art-bounces@ietf.org<mailto:tsv-art-bounces@ietf.=
org>] On Behalf Of Spencer Dawkins at IETF
Sent: Monday, April 25, 2016 10:29 AM
To: tsv-art@ietf.org<mailto:tsv-art@ietf.org>
Subject: [Tsv-art] Common TSV issues

Dear TSV-ART,

So, Mirja and I would like to let the community know what common TSV issues=
 the TSV-ART will be looking for, and we'd like to get your feedback on the=
 current issues list, which is at http://trac.tools.ietf.org/area/tsv/trac/=
wiki/tsvdir-common-issues, before we send that out.

If you could take a look at the current TSV issues, list, and let us know i=
f you think changes are needed by May 9, that would be great!

Thanks,

Spencer and Mirja





_______________________________________________

Tsv-art mailing list

Tsv-art@ietf.org<mailto:Tsv-art@ietf.org>

https://www.ietf.org/mailman/listinfo/tsv-art



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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">I&#8217;ve added my relev=
ant suggestions from this thread.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thanks, --David<o:p></o:p=
></span></p>
</div>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;;color:windowtext">From:</span></b><spa=
n style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif=
&quot;;color:windowtext"> Joe Touch [mailto:touch@isi.edu]
<br>
<b>Sent:</b> Monday, April 25, 2016 6:07 PM<br>
<b>To:</b> Spencer Dawkins at IETF; Black, David<br>
<b>Cc:</b> touch@isi.edu; tsv-art@ietf.org<br>
<b>Subject:</b> Re: [Tsv-art] Common TSV issues<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt">Also, it might be goo=
d to consider reorganzing the list into some sort of taxonomy. I had a draf=
t of this sort of thing I had been preparing for TSV-AREA at one point. Let=
 me know if it would be useful to dig
 out.<br>
<br>
Joe<o:p></o:p></p>
<div>
<p class=3D"MsoNormal">On 4/25/2016 12:35 PM, Joe Touch wrote:<o:p></o:p></=
p>
</div>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt">FWIW - I added a hand=
ful of things this AM...<br>
<br>
Joe<o:p></o:p></p>
<div>
<p class=3D"MsoNormal">On 4/25/2016 12:03 PM, Spencer Dawkins at IETF wrote=
:<o:p></o:p></p>
</div>
<blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class=3D"MsoNormal">Hi, David, <o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal">On Mon, Apr 25, 2016 at 1:19 PM, Black, David &lt;<a=
 href=3D"mailto:david.black@emc.com">david.black@emc.com</a>&gt; wrote:<o:p=
></o:p></p>
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">Hi Spencer,</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">Here are a few suggestions:</span><o:p>=
</o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">-- Use of UDP</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">I&#8217;d reference the rfc5405bis draf=
t for which publication has been requested in addition to RFC 5405,
 as it contains a lot of added content (this should be &#8220;instead of RF=
C 5405&#8221; after IESG approval of the bis draft).&nbsp; There are a lot =
of things in this draft that could be called out e.g., reinvention of conge=
stion control is strongly discouraged.</span><o:p></o:p></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Thanks for the other suggestions, too, but 5405bis w=
as so obvious that I feel like a moron for not updating the checklist to in=
clude it :-)<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Others?<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Spencer<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">&nbsp;<o:p></o:p></p>
</div>
<blockquote style=3D"border:none;border-left:solid #CCCCCC 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">We now recognize &#8220;Controlled Envi=
ronments&#8221; as restricted deployment/applicability scenarios where
 general Internet requirements (e.g., for congestion control) may be relaxe=
d under suitable (e.g., operator) control - see section 3.6 of the rfc5405b=
is draft for discussion and RFC 7510 (MPLS/UDP) for a worked example.</span=
><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">Use of zero UDP checksums with IPv6 is =
subtle and requires design attention - see RFC 6935 and 6936.&nbsp;
 Note that these two RFCs contain design requirements, so it&#8217;s insuff=
icient to just normatively reference those two RFCs and impose their requir=
ements - an explanation of how the protocol design (for zero UDP checksums =
with IPv6 meets those requirements is
 needed).&nbsp; RFC 7510 is also a worked example here, and its content on =
this topic is not short.</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">-- PDU Sizes</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">I&#8217;d add a discussion of PMTUD and=
 PLPMTUD, including noting that use of the latter needs to include
 an explanation of how.&nbsp; Use of the former needs to be cognizant of th=
e general unreliability of ICMP Packet Too Big notifications, especially wh=
en sent upstream from within a tunnel (may not propagate across ingress).</=
span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">-- Multicast</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">Many of the concerns may be exacerbated=
 by multicast - perhaps someone who spends more time on multicast
 than I do could come up with a short list of things to watch out for.</spa=
n><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">Thanks, --David</span><o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;;color:#1F497D">&nbsp;</span><o:p></o:p></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><b><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,=
&quot;sans-serif&quot;">From:</span></b><span style=3D"font-size:10.0pt;fon=
t-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Tsv-art [mailto:<a hre=
f=3D"mailto:tsv-art-bounces@ietf.org" target=3D"_blank">tsv-art-bounces@iet=
f.org</a>]
<b>On Behalf Of </b>Spencer Dawkins at IETF<br>
<b>Sent:</b> Monday, April 25, 2016 10:29 AM<br>
<b>To:</b> <a href=3D"mailto:tsv-art@ietf.org" target=3D"_blank">tsv-art@ie=
tf.org</a><br>
<b>Subject:</b> [Tsv-art] Common TSV issues</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">Dear TSV-ART,<o:p></o:p></p>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">So, Mirja and I would like to let the community know what common T=
SV issues the TSV-ART will be looking for, and we'd like to get your feedba=
ck on the current issues list, which
 is at&nbsp;<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&=
quot;sans-serif&quot;"><a href=3D"http://trac.tools.ietf.org/area/tsv/trac/=
wiki/tsvdir-common-issues">http://trac.tools.ietf.org/area/tsv/trac/wiki/ts=
vdir-common-issues</a>, before we send that out.</span><o:p></o:p></p>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quo=
t;sans-serif&quot;">If you could take a look at the current TSV issues, lis=
t, and let us know if you think changes are needed by May
 9, that would be great!</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quo=
t;sans-serif&quot;">Thanks,</span><o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto">&nbsp;<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-a=
lt:auto"><span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quo=
t;sans-serif&quot;">Spencer and Mirja</span><o:p></o:p></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><br>
<br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Tsv-art mailing list<o:p></o:p></pre>
<pre><a href=3D"mailto:Tsv-art@ietf.org">Tsv-art@ietf.org</a><o:p></o:p></p=
re>
<pre><a href=3D"https://www.ietf.org/mailman/listinfo/tsv-art">https://www.=
ietf.org/mailman/listinfo/tsv-art</a><o:p></o:p></pre>
</blockquote>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</blockquote>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</body>
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