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Mirja Kühlewind has entered the following ballot position for
draft-ietf-ospf-ospfv2-hbit-11: No Objection

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The document, along with other ballot positions, can be found here:
https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/



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

Three comments/questions:

1) This sentence in section 3:
"An OSPFv2 router advertising a router-LSA with the H-bit
   set indicates that it MUST NOT be used as a transit router (see
   Section 4) by other OSPFv2 routers in the area supporting the
   functionality."
Isn't the MUST here too restrictive? What if the router is the part of the only
path to a certain host? Or is the assumption that this host is some kind of
endhost/deadend, but then it should never be on the shortest path anyway, or?

Later on you say
"When the H-bit is set, the OSPFv2 router is a Host (non-transit)
   router and is incapable of forwarding transit traffic."
However, there might also be routers that don't understand the H bit and
therefore will route traffic over this host anyway, no?

2) Shouldn't this document update RFC2328, given section 4 and this sentence in
section 2: "If the H-bit is set then the calculation of the shortest-
   path tree for an area, as described in section 16.1 of [RFC2328], is
   modified by including a check to verify that transit vertices DO NOT
   have the H-bit set (see Section 4)."
(And why is DO NOT in upper letters?)

3) Is there an attack that by spoofing the H-bit an attacker could influence
the routing such that traffic is router over a malicious node instead? I guess
there are multiple ways to impact the routing that way and this might not be
specific to the H bit but maybe still worth thinking about it once more...?

Nit:
Section 5: "The RI LSA MUST be area-scoped.  Bit:" -> I guess the "Bit:" should
be removed.



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On November 30, 2019 at 11:21:01 AM, =C3=89ric Vyncke wrote:

Eric:

Hi!

> =3D=3D DISCUSS =3D=3D
>
> -- Section 5 --
> The risk of having inconsistent view of the topology with H-bit aware and
> unaware routers seems possible to me (albeit perhaps only transient). Has
> this feature been tested / simulated in large scale networks?

Yes, as with other operations in a network (reconvergence, for
example), there is a risk of transient inconsistency. =C2=A0=C2=A75 already
makes recommendations to mitigate transient states. =C2=A0What explicitly
are you looking for to address your DISCUSS?

I'll let the authors reply about tests/simulations.

Thanks!

Alvaro.


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On December 2, 2019 at 10:40:05 AM, Mirja K=C3=BChlewind wrote:

Mirja:

Hi!

...
> 1) This sentence in section 3:
> "An OSPFv2 router advertising a router-LSA with the H-bit
> set indicates that it MUST NOT be used as a transit router (see
> Section 4) by other OSPFv2 routers in the area supporting the
> functionality."
> Isn't the MUST here too restrictive? What if the router is the part of th=
e
> only path to a certain host? Or is the assumption that this host is some =
kind
> of endhost/deadend, but then it should never be on the shortest path anyw=
ay,
> or?
>
> Later on you say
> "When the H-bit is set, the OSPFv2 router is a Host (non-transit)
> router and is incapable of forwarding transit traffic."
> However, there might also be routers that don't understand the H bit and
> therefore will route traffic over this host anyway, no?

Completely avoiding transit traffic is the goal of the H-bit, which is
the reason/justification of the "MUST NOT". =C2=A0Hence it being called the
Host-bit.

rfc6987 defines the "best effort" functionality that would be
equivalent to "SHOULD NOT": if no alternate path exits then the path
through the router can still be used.

=C2=A78 (in the third bullet) mentions the case where a rogue router can
partition a network by setting the H-Bit...and =C2=A75 talks about the
mitigation in mixed environments, where the recommendation (third
bullet) results in the rfc6987 behavior if not all the routers
advertise support.


> 2) Shouldn't this document update RFC2328, given section 4 and this sente=
nce
> in section 2: "If the H-bit is set then the calculation of the shortest-
> path tree for an area, as described in section 16.1 of [RFC2328], is
> modified by including a check to verify that transit vertices DO NOT
> have the H-bit set (see Section 4)."
> (And why is DO NOT in upper letters?)

Because the H-bit is an optional feature and not intended to be
supported by all OSPFv2 routers, then the formal Update is not needed.


> 3) Is there an attack that by spoofing the H-bit an attacker could influe=
nce
> the routing such that traffic is router over a malicious node instead? I =
guess
> there are multiple ways to impact the routing that way and this might not=
 be
> specific to the H bit but maybe still worth thinking about it once more..=
.?

Yes. =C2=A0By using the H-bit the traffic is directed away from the node,
which would force the traffic through another path, including a
specific node. =C2=A0Similar to the last bullet in =C2=A78, this action wou=
ld be
indistinguishable from the proper use of the H-bit, or from simply
shutting down an interface...

Thanks for the review!

Alvaro.


From nobody Mon Dec  2 12:31:01 2019
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From: Padma Pillay-Esnault <padma.ietf@gmail.com>
Date: Mon, 2 Dec 2019 12:44:20 -0800
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Hello Eric

On Mon, Dec 2, 2019 at 12:31 PM Eric Vyncke (evyncke) <evyncke@cisco.com>
wrote:

> Alvaro
>
> I do not mind too much the transient inconsistencies but more about longe=
r
> term inconsistencies (1) hence my question about simulations / tests in t=
he
> absence of mathematical proof.
>
The R-bit has always been in OSPFv3 (AFAIK), so, OSPFv3 does not have the
> same issue.
>
> -=C3=A9ric
>
> (1) having some routers being H-bit aware and other routers not processin=
g
> the H-bit could probably introduce long term inconsistencies and loops.
>
>
As described in section 5
"All routers supporting H-Bit MUST check all the RI LSAs of nodes in the
area before actively running the modified SPF to account for the H-bit in
order to verify that all routers are in routing capability. If any router
does not advertise the Host Router Support capability then the SPF
Modifications (Section 4) MUST NOT be used in the area."

The H-bit aware routers will revert to normal operation if they detect
routers not processing the H-bit. Therefore, if ever there is a discrepancy
it not cause long term inconsistencies nor loops. In effect, H-bit
processing is either done by all or no one in the area.

Let me know if this answers your question.
Padma



> =EF=BB=BFOn 02/12/2019, 17:59, "iesg on behalf of Alvaro Retana" <
> iesg-bounces@ietf.org on behalf of aretana.ietf@gmail.com> wrote:
>
>     On November 30, 2019 at 11:21:01 AM, =C3=89ric Vyncke wrote:
>
>     Eric:
>
>     Hi!
>
>     > =3D=3D DISCUSS =3D=3D
>     >
>     > -- Section 5 --
>     > The risk of having inconsistent view of the topology with H-bit
> aware and
>     > unaware routers seems possible to me (albeit perhaps only
> transient). Has
>     > this feature been tested / simulated in large scale networks?
>
>     Yes, as with other operations in a network (reconvergence, for
>     example), there is a risk of transient inconsistency.  =C2=A75 alread=
y
>     makes recommendations to mitigate transient states.  What explicitly
>     are you looking for to address your DISCUSS?
>
>     I'll let the authors reply about tests/simulations.
>
>     Thanks!
>
>     Alvaro.
>
>
>
>

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<div dir=3D"ltr"><div dir=3D"ltr"><div>Hello Eric</div><br><div class=3D"gm=
ail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Dec 2, 2019 at 12:=
31 PM Eric Vyncke (evyncke) &lt;<a href=3D"mailto:evyncke@cisco.com">evynck=
e@cisco.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;=
border-left-color:rgb(204,204,204);padding-left:1ex">Alvaro<br>
<br>
I do not mind too much the transient inconsistencies but more about longer =
term inconsistencies (1) hence my question about simulations / tests in the=
 absence of mathematical proof.=C2=A0<br></blockquote><blockquote class=3D"=
gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border=
-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
The R-bit has always been in OSPFv3 (AFAIK), so, OSPFv3 does not have the s=
ame issue.<br>
<br>
-=C3=A9ric<br>
<br>
(1) having some routers being H-bit aware and other routers not processing =
the H-bit could probably introduce long term inconsistencies and loops.<br>
<br></blockquote><div><br></div><div>As described in section 5=C2=A0</div>&=
quot;All routers supporting H-Bit MUST check all the RI LSAs of nodes in th=
e area before actively running the modified SPF to account for the H-bit in=
 order to verify that all routers are in routing capability. If any router =
does not advertise the Host Router Support capability then the SPF Modifica=
tions (Section 4) MUST NOT be used in the area.&quot;</div><div class=3D"gm=
ail_quote"><br></div><div class=3D"gmail_quote">The H-bit aware routers wil=
l revert to normal operation if they detect routers not processing the H-bi=
t. Therefore, if ever there is a discrepancy it not cause long term inconsi=
stencies nor loops. In effect, H-bit processing is either done by all or no=
 one in the area.</div><div class=3D"gmail_quote"><br></div><div class=3D"g=
mail_quote">Let me know if this answers your question.</div><div class=3D"g=
mail_quote">Padma</div><div class=3D"gmail_quote"><br><div>=C2=A0</div><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left=
-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);paddi=
ng-left:1ex">
=EF=BB=BFOn 02/12/2019, 17:59, &quot;iesg on behalf of Alvaro Retana&quot; =
&lt;<a href=3D"mailto:iesg-bounces@ietf.org" target=3D"_blank">iesg-bounces=
@ietf.org</a> on behalf of <a href=3D"mailto:aretana.ietf@gmail.com" target=
=3D"_blank">aretana.ietf@gmail.com</a>&gt; wrote:<br>
<br>
=C2=A0 =C2=A0 On November 30, 2019 at 11:21:01 AM, =C3=89ric Vyncke wrote:<=
br>
<br>
=C2=A0 =C2=A0 Eric:<br>
<br>
=C2=A0 =C2=A0 Hi!<br>
<br>
=C2=A0 =C2=A0 &gt; =3D=3D DISCUSS =3D=3D<br>
=C2=A0 =C2=A0 &gt;<br>
=C2=A0 =C2=A0 &gt; -- Section 5 --<br>
=C2=A0 =C2=A0 &gt; The risk of having inconsistent view of the topology wit=
h H-bit aware and<br>
=C2=A0 =C2=A0 &gt; unaware routers seems possible to me (albeit perhaps onl=
y transient). Has<br>
=C2=A0 =C2=A0 &gt; this feature been tested / simulated in large scale netw=
orks?<br>
<br>
=C2=A0 =C2=A0 Yes, as with other operations in a network (reconvergence, fo=
r<br>
=C2=A0 =C2=A0 example), there is a risk of transient inconsistency.=C2=A0 =
=C2=A75 already<br>
=C2=A0 =C2=A0 makes recommendations to mitigate transient states.=C2=A0 Wha=
t explicitly<br>
=C2=A0 =C2=A0 are you looking for to address your DISCUSS?<br>
<br>
=C2=A0 =C2=A0 I&#39;ll let the authors reply about tests/simulations.<br>
<br>
=C2=A0 =C2=A0 Thanks!<br>
<br>
=C2=A0 =C2=A0 Alvaro.<br>
<br>
<br>
<br>
</blockquote></div></div></div>

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From: "Eric Vyncke (evyncke)" <evyncke@cisco.com>
To: Padma Pillay-Esnault <padma.ietf@gmail.com>
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--_000_12D7A7E4DCCC4274A7A7BDB621509540ciscocom_--


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Éric Vyncke has entered the following ballot position for
draft-ietf-ospf-ospfv2-hbit-11: No Objection

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

Thank you for the work put into this document. The short document is easy to
read even if I wonder whether it is useful to spend time on IPv4-only protocol
;-)

The deployment issue (section 5) had raised a DISCUSS of mine and I appreciated
your reply, so, I have cleared this DISCUSS.

Feel free to ignore my COMMENTs and NIT.

== COMMENTS ==

-- Generic --
Mentioning that the H-bit of OSPFv2 is the reverse of the R-bit of OSPFv3 would
be useful.

-- Section 1 --
A description of "Closet Switches" would be welcome.

-- Section 3 --
Isn't the wording "host router" an oxymoron ?

== NITS ==

-- Section 8 --
I recommend reading and following the suggestions of RFC 8126 (how to write the
IANA considerations)



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Mohit, thanks for your review. Authors, thanks for your responses. I =
entered a No Objection ballot.

Alissa

> On Oct 31, 2019, at 4:08 AM, Mohit Sethi via Datatracker =
<noreply@ietf.org> wrote:
>=20
> Reviewer: Mohit Sethi
> Review result: Ready
>=20
> I am the assigned Gen-ART reviewer for this draft. The General Area
> Review Team (Gen-ART) reviews all IETF documents being processed
> by the IESG for the IETF Chair.  Please treat these comments just
> like any other last call comments.
>=20
> For more information, please see the FAQ at
>=20
> <https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.
>=20
> Document: draft-ietf-ospf-ospfv2-hbit-10
> Reviewer: Mohit Sethi
> Review Date: 2019-10-31
> IETF LC End Date: 2019-11-07
> IESG Telechat date: Not scheduled for a telechat
>=20
> Summary:
> This document uses a bit in the link state advertisement (LSA) sent =
from
> routers to indicate that they are hosts which will not forward transit =
traffic.
> The document is READY for publication.
>=20
> Major issues:
>=20
> Minor issues:
> I think the document would benefit from some more discussion on what =
happens if
> a router that is repelling traffic is on the only path to some =
destinations?
> How is this handled? Is it fair to say that H-bit is only a best =
effort way of
> repelling traffic and does not guarantee that the transit traffic is =
actually
> interrupted?
>=20
> Any reason that this is only done for OSPFv2 and not v3? Are there =
ways of
> achieving this functionality (of repelling transit traffic) already in =
v3?
>=20
> Nits/editorial comments:
> - Please expand acronyms like NSSA and LSAs on first usage.
> - Abstract has stray " symbol.
> -  The list in the acknowledgements section could benefit from an =
Oxford comma:
> Abhay Roy, David Ward, Burjiz Pithawala, and Michael Barnes for their =
comments.
>=20
> _______________________________________________
> Gen-art mailing list
> Gen-art@ietf.org
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Benjamin Kaduk has entered the following ballot position for
draft-ietf-ospf-ospfv2-hbit-11: No Objection

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

Abstract

   The Open Shortest Path First Version 2 (OSPFv2) does not have a
   mechanism for a node to repel transit traffic if it is on the
   shortest path.  This document defines a bit (Host-bit) that enables a

nit: I suggest to add "protocol" after "(OSPFv2)" to match the definite
article "The".

Section 1

   The OSPFv2 specifies a Shortest Path First (SPF) algorithm that

(same nit about adding "protocol")

   This functionality is particularly useful for a number of use cases:

nit: "this functionality" seems to refer to "the SPF algorithm that
identifies transit verticies based on their adjacencies", so I suggest
rewording to "such functionality would be useful" or "A mechanism to
move traffic away from the shortest path" or similar.

Section 4

I suggest noting that the (lettered) sub-procedures of step (2) remain
unchanged.

Section 5

   In normal operation, there is no guarantee that the RI LSA will reach
   all routers in an area in a timely manner, which may result in
   forwarding loops in partial deployments.  For example, if a new
   router joins an area, which previously had only H-bit capable routers
   with H-bit set then it may take some time for the RI to propagate to
   all routers.

It's currently only implicit that this new router does not support the
H-bit; shall we make it explicit?

   o  All routers supporting H-Bit MUST check all the RI LSAs of nodes
      in the area before actively running the modified SPF to account
      for the H-bit in order to verify that all routers are in routing
      capability.  If any router does not advertise the Host Router

nit: the grammar here is a little wonky, particularly for "all routers
are in routing capability" but perhaps also for "to account for the
H-bit".

Section 6

   When calculating the path to an OSPF AS-External-LSA or NSSA-LSA
   [RFC3101] with a Type-2 metric, [...]

nit: is this saying "calculating the path to [an LSA]"?  That's not a
usage I'm familiar with; can the AS-External-LSA or NSSA-LSA really
serve as a destination in this sense?

Section 7

Thank you for phrasing this as "this document requests the IANA to
assign", since until these specific values are officially assigned we
are technically "squatting" on them.  (The respective registration
policies of Standards Action and IETF Review give us pretty good control
that nothing else is going to swoop in on them, though.)



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From: Padma Pillay-Esnault <padma.ietf@gmail.com>
Date: Wed, 4 Dec 2019 10:22:53 -0800
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To: Benjamin Kaduk <kaduk@mit.edu>
Cc: The IESG <iesg@ietf.org>, draft-ietf-ospf-ospfv2-hbit@ietf.org,  Yingzhen Qu <yingzhen.ietf@gmail.com>, Alvaro Retana <aretana.ietf@gmail.com>,  lsr-chairs@ietf.org,  lsr@ietf.org, Padma Pillay-Esnault <padma.ietf@gmail.com>
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Subject: Re: [Lsr] Benjamin Kaduk's No Objection on draft-ietf-ospf-ospfv2-hbit-11: (with COMMENT)
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Hi Ben

Thanks for your thorough review.

See below PPE for my comments

On Tue, Dec 3, 2019 at 5:45 PM Benjamin Kaduk via Datatracker <
noreply@ietf.org> wrote:

> Benjamin Kaduk has entered the following ballot position for
> draft-ietf-ospf-ospfv2-hbit-11: No Objection
>
> When responding, please keep the subject line intact and reply to all
> email addresses included in the To and CC lines. (Feel free to cut this
> introductory paragraph, however.)
>
>
> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
> for more information about IESG DISCUSS and COMMENT positions.
>
>
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/
>
>
>
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> Abstract
>
>    The Open Shortest Path First Version 2 (OSPFv2) does not have a
>    mechanism for a node to repel transit traffic if it is on the
>    shortest path.  This document defines a bit (Host-bit) that enables a
>
> nit: I suggest to add "protocol" after "(OSPFv2)" to match the definite
> article "The".
>
> PPE - ok


> Section 1
>
>    The OSPFv2 specifies a Shortest Path First (SPF) algorithm that
>
> (same nit about adding "protocol")
>
> PPE - ok


>    This functionality is particularly useful for a number of use cases:
>
> nit: "this functionality" seems to refer to "the SPF algorithm that
> identifies transit verticies based on their adjacencies", so I suggest
> rewording to "such functionality would be useful" or "A mechanism to
> move traffic away from the shortest path" or similar.
>
> PPE - ok will change as you suggest

Suggested NEW:
"A mechanism to move traffic away from the shortest path is particularly
useful for a number of use cases:"


> Section 4
>
> I suggest noting that the (lettered) sub-procedures of step (2) remain
> unchanged.
>
> PPE - The original format of OSPF rfc2328 steps for SPF calculation was
kept for clarity. Would a sentence to that effect work?



> Section 5
>
>    In normal operation, there is no guarantee that the RI LSA will reach
>    all routers in an area in a timely manner, which may result in
>    forwarding loops in partial deployments.  For example, if a new
>    router joins an area, which previously had only H-bit capable routers
>    with H-bit set then it may take some time for the RI to propagate to
>    all routers.
>
> It's currently only implicit that this new router does not support the
> H-bit; shall we make it explicit?
>

PPE - ok

Suggested NEW:
 If a new router without H-bit support joins an area, which previously had
only H-bit capable routers
 with H-bit set then it may take some time for the RI to propagate to all
routers.



>    o  All routers supporting H-Bit MUST check all the RI LSAs of nodes
>       in the area before actively running the modified SPF to account
>       for the H-bit in order to verify that all routers are in routing
>       capability.  If any router does not advertise the Host Router
>
> nit: the grammar here is a little wonky, particularly for "all routers
> are in routing capability" but perhaps also for "to account for the
> H-bit".
>
> PPE -  agree

Suggested NEW:
All routers supporting H-Bit MUST check all the RI LSAs of nodes in the
area before actively
running the modified SPF in order to verify that all routers in the area
support the H-bit capability.


Section 6
>
>    When calculating the path to an OSPF AS-External-LSA or NSSA-LSA
>    [RFC3101] with a Type-2 metric, [...]
>
> nit: is this saying "calculating the path to [an LSA]"?  That's not a
> usage I'm familiar with; can the AS-External-LSA or NSSA-LSA really
> serve as a destination in this sense?
>
> PPE - suggest adding the word " prefix" which was implicit here.


> Section 7
>
> Thank you for phrasing this as "this document requests the IANA to
> assign", since until these specific values are officially assigned we
> are technically "squatting" on them.  (The respective registration
> policies of Standards Action and IETF Review give us pretty good control
> that nothing else is going to swoop in on them, though.)
>
>
>
Let me know if these changes address your comments

Padma

--0000000000004bfada0598e4e76f
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div di=
r=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div>Hi Ben</d=
iv><div><br></div><div>Thanks for your thorough review.</div><div><br></div=
><div>See below PPE for my comments</div><br><div class=3D"gmail_quote"><di=
v dir=3D"ltr" class=3D"gmail_attr">On Tue, Dec 3, 2019 at 5:45 PM Benjamin =
Kaduk via Datatracker &lt;<a href=3D"mailto:noreply@ietf.org">noreply@ietf.=
org</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"marg=
in:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-l=
eft-color:rgb(204,204,204);padding-left:1ex">Benjamin Kaduk has entered the=
 following ballot position for<br>
draft-ietf-ospf-ospfv2-hbit-11: No Objection<br>
<br>
When responding, please keep the subject line intact and reply to all<br>
email addresses included in the To and CC lines. (Feel free to cut this<br>
introductory paragraph, however.)<br>
<br>
<br>
Please refer to <a href=3D"https://www.ietf.org/iesg/statement/discuss-crit=
eria.html" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/iesg/s=
tatement/discuss-criteria.html</a><br>
for more information about IESG DISCUSS and COMMENT positions.<br>
<br>
<br>
The document, along with other ballot positions, can be found here:<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/" r=
el=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc/draft-=
ietf-ospf-ospfv2-hbit/</a><br>
<br>
<br>
<br>
----------------------------------------------------------------------<br>
COMMENT:<br>
----------------------------------------------------------------------<br>
<br>
Abstract<br>
<br>
=C2=A0 =C2=A0The Open Shortest Path First Version 2 (OSPFv2) does not have =
a<br>
=C2=A0 =C2=A0mechanism for a node to repel transit traffic if it is on the<=
br>
=C2=A0 =C2=A0shortest path.=C2=A0 This document defines a bit (Host-bit) th=
at enables a<br>
<br>
nit: I suggest to add &quot;protocol&quot; after &quot;(OSPFv2)&quot; to ma=
tch the definite<br>
article &quot;The&quot;.<br>
<br></blockquote><div>PPE - ok</div><div>=C2=A0</div><blockquote class=3D"g=
mail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-=
left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
Section 1<br>
<br>
=C2=A0 =C2=A0The OSPFv2 specifies a Shortest Path First (SPF) algorithm tha=
t<br>
<br>
(same nit about adding &quot;protocol&quot;)<br>
<br></blockquote><div>PPE - ok</div><div>=C2=A0<br></div><blockquote class=
=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;bo=
rder-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
=C2=A0 =C2=A0This functionality is particularly useful for a number of use =
cases:<br>
<br>
nit: &quot;this functionality&quot; seems to refer to &quot;the SPF algorit=
hm that<br>
identifies transit verticies based on their adjacencies&quot;, so I suggest=
<br>
rewording to &quot;such functionality would be useful&quot; or &quot;A mech=
anism to<br>
move traffic away from the shortest path&quot; or similar.<br>
<br></blockquote><div>PPE - ok will change as you suggest=C2=A0</div><div><=
br></div>Suggested NEW: <br>&quot;A mechanism to move traffic away from the=
 shortest path is particularly useful for a number of use cases:&quot;<div>=
=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0=
.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(20=
4,204,204);padding-left:1ex">
Section 4<br>
<br>
I suggest noting that the (lettered) sub-procedures of step (2) remain<br>
unchanged.<br>
<br></blockquote><div>PPE - The original format of OSPF rfc2328 steps for S=
PF calculation was kept for clarity. Would a sentence to that effect work?<=
/div><div><br></div><div>=C2=A0</div><blockquote class=3D"gmail_quote" styl=
e=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid=
;border-left-color:rgb(204,204,204);padding-left:1ex">
Section 5<br>
<br>
=C2=A0 =C2=A0In normal operation, there is no guarantee that the RI LSA wil=
l reach<br>
=C2=A0 =C2=A0all routers in an area in a timely manner, which may result in=
<br>
=C2=A0 =C2=A0forwarding loops in partial deployments.=C2=A0 For example, if=
 a new<br>
=C2=A0 =C2=A0router joins an area, which previously had only H-bit capable =
routers<br>
=C2=A0 =C2=A0with H-bit set then it may take some time for the RI to propag=
ate to<br>
=C2=A0 =C2=A0all routers.<br>
<br>
It&#39;s currently only implicit that this new router does not support the<=
br>
H-bit; shall we make it explicit?<br></blockquote><div><br></div><div>PPE -=
 ok</div><br>Suggested NEW:<br>=C2=A0If a new router without H-bit support =
joins an area, which previously had only H-bit capable routers<br>=C2=A0wit=
h H-bit set then it may take some time for the RI to propagate to=C2=A0all =
routers.</div><div class=3D"gmail_quote"><br></div><div class=3D"gmail_quot=
e"><br><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;=
border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204=
,204);padding-left:1ex">
<br>
=C2=A0 =C2=A0o=C2=A0 All routers supporting H-Bit MUST check all the RI LSA=
s of nodes<br>
=C2=A0 =C2=A0 =C2=A0 in the area before actively running the modified SPF t=
o account<br>
=C2=A0 =C2=A0 =C2=A0 for the H-bit in order to verify that all routers are =
in routing<br>
=C2=A0 =C2=A0 =C2=A0 capability.=C2=A0 If any router does not advertise the=
 Host Router<br>
<br>
nit: the grammar here is a little wonky, particularly for &quot;all routers=
<br>
are in routing capability&quot; but perhaps also for &quot;to account for t=
he<br>
H-bit&quot;.<br>
<br></blockquote><div>PPE - =C2=A0agree</div><div><br></div><div>Suggested =
NEW:</div><div>All routers supporting H-Bit MUST check all the RI LSAs of n=
odes=C2=A0in the area before actively=C2=A0</div><div>running the modified =
SPF in order to verify that all routers=C2=A0in the area support the H-bit =
capability.</div></div><div class=3D"gmail_quote"><br></div><div class=3D"g=
mail_quote"><br><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0=
px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rg=
b(204,204,204);padding-left:1ex">
Section 6<br>
<br>
=C2=A0 =C2=A0When calculating the path to an OSPF AS-External-LSA or NSSA-L=
SA<br>
=C2=A0 =C2=A0[RFC3101] with a Type-2 metric, [...]<br>
<br>
nit: is this saying &quot;calculating the path to [an LSA]&quot;?=C2=A0 Tha=
t&#39;s not a<br>
usage I&#39;m familiar with; can the AS-External-LSA or NSSA-LSA really<br>
serve as a destination in this sense?<br>
<br></blockquote><div>PPE - suggest adding the word &quot; prefix&quot; whi=
ch was implicit here.</div><div>=C2=A0</div><blockquote class=3D"gmail_quot=
e" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-styl=
e:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
Section 7<br>
<br>
Thank you for phrasing this as &quot;this document requests the IANA to<br>
assign&quot;, since until these specific values are officially assigned we<=
br>
are technically &quot;squatting&quot; on them.=C2=A0 (The respective regist=
ration<br>
policies of Standards Action and IETF Review give us pretty good control<br=
>
that nothing else is going to swoop in on them, though.)<br>
<br>
<br></blockquote><div><br></div><div>Let me know if these changes address y=
our comments</div><div><br></div><div>Padma=C2=A0</div></div></div></div></=
div></div></div></div></div></div>

--0000000000004bfada0598e4e76f--


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Subject: [Lsr] Barry Leiba's No Objection on draft-ietf-ospf-ospfv2-hbit-11: (with COMMENT)
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Barry Leiba has entered the following ballot position for
draft-ietf-ospf-ospfv2-hbit-11: No Objection

When responding, please keep the subject line intact and reply to all
email addresses included in the To and CC lines. (Feel free to cut this
introductory paragraph, however.)


Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
for more information about IESG DISCUSS and COMMENT positions.


The document, along with other ballot positions, can be found here:
https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/



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

I'm going to complain about some wording in Section 5 that Ben already called
out, but I'll try to put in some specific suggestions for corrections here:

   In normal operation, there is no guarantee that the RI LSA will reach
   all routers in an area in a timely manner, which may result in
   forwarding loops in partial deployments.

This wording makes it sound exactly the opposite of what you mean, that if the
RI LSA *does* reach all routers in a timely manner it can cause forwarding
loops.  I suggest this:

NEW
   In normal operation, it is possible that the RI LSA will fail to
   reach all routers in an area in a timely manner.  That can result
   in forwarding loops in partial deployments.
END

   For example, if a new
   router joins an area, which previously had only H-bit capable routers
   with H-bit set then it may take some time for the RI to propagate to
   all routers.

First, change "area, which" to "area that" (no comma).  That fixes a usage
problem.

But second, Ben and I are both unsure whether you mean that the new router does
or doesn't support the H bit, or whether it matters.  Maybe the right approach
here is to say a little more about what happens.  Something like this (adjust
as needed to make it correct):

NEW
   For example, if a new
   router joins an area that previously had only H-bit capable routers
   with H-bit set then it may take some time for the RI to propagate to
   all routers.  While it is propagating, the area as a whole is unsure of
   the status of the new router, and that can cause <what problem?>
END

   o  All routers, with the H-bit set, MUST advertise all of the
      router's non-stub links with a metric equal to MaxLinkMetric

Both commas need to be removed here.

   o  All routers supporting H-Bit MUST check all the RI LSAs of nodes
      in the area before actively running the modified SPF to account
      for the H-bit in order to verify that all routers are in routing
      capability.

This is very awkwardly worded and is really hard to decipher.  I *think* you
mean to say this:

NEW
   o  All routers supporting the H-Bit MUST check the RI LSAs of all
      nodes in the area to verify that all nodes support the H-Bit before
      actively using the H-Bit feature.
END

Did I get that right?



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From: Yingzhen Qu <yingzhen.qu@futurewei.com>
To: Jeff Tantsura <jefftant.ietf@gmail.com>, "Acee Lindem (acee)" <acee@cisco.com>
CC: "lsr@ietf.org" <lsr@ietf.org>, Christian Hopps <chopps@chopps.org>
Thread-Topic: [Lsr] "YANG Module for IS-IS Reverse Metric" - draft-hopps-lsr-yang-isis-reverse-metric-02
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Date: Thu, 5 Dec 2019 00:56:14 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/qNEEsKHOOcEZwnniYr2ck1FGlQM>
Subject: Re: [Lsr] "YANG Module for IS-IS Reverse Metric" - draft-hopps-lsr-yang-isis-reverse-metric-02
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To: "Acee Lindem (acee)" <acee@cisco.com>, "lsr@ietf.org" <lsr@ietf.org>
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From nobody Wed Dec  4 22:03:34 2019
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From: Padma Pillay-Esnault <padma.ietf@gmail.com>
Date: Wed, 4 Dec 2019 22:03:11 -0800
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To: Barry Leiba <barryleiba@computer.org>
Cc: The IESG <iesg@ietf.org>, draft-ietf-ospf-ospfv2-hbit@ietf.org,  Yingzhen Qu <yingzhen.ietf@gmail.com>, Alvaro Retana <aretana.ietf@gmail.com>,  lsr-chairs@ietf.org,  lsr@ietf.org, Padma Pillay-Esnault <padma.ietf@gmail.com>
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Subject: Re: [Lsr] Barry Leiba's No Objection on draft-ietf-ospf-ospfv2-hbit-11: (with COMMENT)
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Hi Barry

Thank you for your review

See below PPE for my comments

On Wed, Dec 4, 2019 at 12:47 PM Barry Leiba via Datatracker <
noreply@ietf.org> wrote:

> Barry Leiba has entered the following ballot position for
> draft-ietf-ospf-ospfv2-hbit-11: No Objection
>
> When responding, please keep the subject line intact and reply to all
> email addresses included in the To and CC lines. (Feel free to cut this
> introductory paragraph, however.)
>
>
> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
> for more information about IESG DISCUSS and COMMENT positions.
>
>
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/
>
>
>
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> I'm going to complain about some wording in Section 5 that Ben already
> called
> out, but I'll try to put in some specific suggestions for corrections here:
>
>    In normal operation, there is no guarantee that the RI LSA will reach
>    all routers in an area in a timely manner, which may result in
>    forwarding loops in partial deployments.
>
> This wording makes it sound exactly the opposite of what you mean, that if
> the
> RI LSA *does* reach all routers in a timely manner it can cause forwarding
> loops.  I suggest this:
>
> NEW
>    In normal operation, it is possible that the RI LSA will fail to
>    reach all routers in an area in a timely manner.  That can result
>    in forwarding loops in partial deployments.
> END
>
> PPE - See below for the whole paragraph change.


>    For example, if a new
>    router joins an area, which previously had only H-bit capable routers
>    with H-bit set then it may take some time for the RI to propagate to
>    all routers.
>
> First, change "area, which" to "area that" (no comma).  That fixes a usage
> problem.
>
> But second, Ben and I are both unsure whether you mean that the new router
> does
> or doesn't support the H bit, or whether it matters.  Maybe the right
> approach
> here is to say a little more about what happens.  Something like this
> (adjust
> as needed to make it correct):
>
> NEW
>    For example, if a new
>    router joins an area that previously had only H-bit capable routers
>    with H-bit set then it may take some time for the RI to propagate to
>    all routers.  While it is propagating, the area as a whole is unsure of
>    the status of the new router, and that can cause <what problem?>
> END
>
>
PPE - I see what you mean.
See below combining your suggestion and the one I made to Ben earlier.

Suggested NEW (whole paragraph):
In normal operation, it is possible that the RI LSA will fail to reach all
routers in an area in a timely manner.  For example, if a new router
without H-bit support joins an area that previously had only H-bit capable
routers with H-bit set then it may take some time for the RI to propagate
to all routers. While it is propagating, the routers in the area will
gradually detect the presence of a router not supporting the capability and
revert back to normal SPF calculation. During the propagation time, the
area as a whole is unsure of the status of the new router, and that can
cause temporary transient loops.
 END

   o  All routers, with the H-bit set, MUST advertise all of the
>       router's non-stub links with a metric equal to MaxLinkMetric
>
> Both commas need to be removed here.
>

PPE - ok

>
>    o  All routers supporting H-Bit MUST check all the RI LSAs of nodes
>       in the area before actively running the modified SPF to account
>       for the H-bit in order to verify that all routers are in routing
>       capability.
>
> This is very awkwardly worded and is really hard to decipher.  I *think*
> you
> mean to say this:
>
> NEW
>    o  All routers supporting the H-Bit MUST check the RI LSAs of all
>       nodes in the area to verify that all nodes support the H-Bit before
>       actively using the H-Bit feature.
> END
>


> Did I get that right?
>
>
PPE - Yes you did. I will adopt the suggestion above. It is close to what I
suggested to Ben earlier.

Let me know if this addresses all your comments

Padma

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<div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div di=
r=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"lt=
r"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr">Hi Barry=C2=A0<div><b=
r></div><div>Thank you for your review</div><div><br></div><div>See below P=
PE for my comments</div></div><br><div class=3D"gmail_quote"><div dir=3D"lt=
r" class=3D"gmail_attr">On Wed, Dec 4, 2019 at 12:47 PM Barry Leiba via Dat=
atracker &lt;<a href=3D"mailto:noreply@ietf.org" target=3D"_blank">noreply@=
ietf.org</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D=
"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;bor=
der-left-color:rgb(204,204,204);padding-left:1ex">Barry Leiba has entered t=
he following ballot position for<br>
draft-ietf-ospf-ospfv2-hbit-11: No Objection<br>
<br>
When responding, please keep the subject line intact and reply to all<br>
email addresses included in the To and CC lines. (Feel free to cut this<br>
introductory paragraph, however.)<br>
<br>
<br>
Please refer to <a href=3D"https://www.ietf.org/iesg/statement/discuss-crit=
eria.html" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/iesg/s=
tatement/discuss-criteria.html</a><br>
for more information about IESG DISCUSS and COMMENT positions.<br>
<br>
<br>
The document, along with other ballot positions, can be found here:<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/" r=
el=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc/draft-=
ietf-ospf-ospfv2-hbit/</a><br>
<br>
<br>
<br>
----------------------------------------------------------------------<br>
COMMENT:<br>
----------------------------------------------------------------------<br>
<br>
I&#39;m going to complain about some wording in Section 5 that Ben already =
called<br>
out, but I&#39;ll try to put in some specific suggestions for corrections h=
ere:<br>
<br>
=C2=A0 =C2=A0In normal operation, there is no guarantee that the RI LSA wil=
l reach<br>
=C2=A0 =C2=A0all routers in an area in a timely manner, which may result in=
<br>
=C2=A0 =C2=A0forwarding loops in partial deployments.<br>
<br>
This wording makes it sound exactly the opposite of what you mean, that if =
the<br>
RI LSA *does* reach all routers in a timely manner it can cause forwarding<=
br>
loops.=C2=A0 I suggest this:<br>
<br>
NEW<br>
=C2=A0 =C2=A0In normal operation, it is possible that the RI LSA will fail =
to<br>
=C2=A0 =C2=A0reach all routers in an area in a timely manner.=C2=A0 That ca=
n result<br>
=C2=A0 =C2=A0in forwarding loops in partial deployments.<br>
END<br>
<br></blockquote><div>PPE - See below for the whole paragraph change.</div>=
<div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px =
0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:r=
gb(204,204,204);padding-left:1ex">
=C2=A0 =C2=A0For example, if a new<br>
=C2=A0 =C2=A0router joins an area, which previously had only H-bit capable =
routers<br>
=C2=A0 =C2=A0with H-bit set then it may take some time for the RI to propag=
ate to<br>
=C2=A0 =C2=A0all routers.<br>
<br>
First, change &quot;area, which&quot; to &quot;area that&quot; (no comma).=
=C2=A0 That fixes a usage<br>
problem.<br>
<br>
But second, Ben and I are both unsure whether you mean that the new router =
does<br>
or doesn&#39;t support the H bit, or whether it matters.=C2=A0 Maybe the ri=
ght approach<br>
here is to say a little more about what happens.=C2=A0 Something like this =
(adjust<br>
as needed to make it correct):<br>
<br>
NEW<br>
=C2=A0 =C2=A0For example, if a new<br>
=C2=A0 =C2=A0router joins an area that previously had only H-bit capable ro=
uters<br>
=C2=A0 =C2=A0with H-bit set then it may take some time for the RI to propag=
ate to<br>
=C2=A0 =C2=A0all routers.=C2=A0 While it is propagating, the area as a whol=
e is unsure of<br>
=C2=A0 =C2=A0the status of the new router, and that can cause &lt;what prob=
lem?&gt;<br>
END<br>
<br></blockquote><div><br></div><div>PPE - I see what you mean.</div><div>S=
ee below combining your suggestion and the one I made to Ben earlier.</div>=
<div><br></div>Suggested NEW (whole paragraph):</div><div class=3D"gmail_qu=
ote">In normal operation, it is possible that the RI LSA will fail to=C2=A0=
reach all routers in an area in a timely manner.=C2=A0 For example, if a ne=
w router without H-bit support joins an area that previously had only H-bit=
 capable routers=C2=A0with H-bit set then it may take some time for the RI =
to propagate to all routers. While it is propagating, the routers in the=C2=
=A0area will gradually detect the presence of a router not supporting the c=
apability and revert back to normal SPF calculation.=C2=A0During the propag=
ation time, the area as a whole is unsure of the status of the new router, =
and that can cause temporary transient loops.<br>=C2=A0END</div><div class=
=3D"gmail_quote"><br><blockquote class=3D"gmail_quote" style=3D"margin:0px =
0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-col=
or:rgb(204,204,204);padding-left:1ex">
=C2=A0 =C2=A0o=C2=A0 All routers, with the H-bit set, MUST advertise all of=
 the<br>
=C2=A0 =C2=A0 =C2=A0 router&#39;s non-stub links with a metric equal to Max=
LinkMetric<br>
<br>
Both commas need to be removed here.<br></blockquote><div><br></div><div>PP=
E - ok=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px=
 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:=
rgb(204,204,204);padding-left:1ex">
<br>
=C2=A0 =C2=A0o=C2=A0 All routers supporting H-Bit MUST check all the RI LSA=
s of nodes<br>
=C2=A0 =C2=A0 =C2=A0 in the area before actively running the modified SPF t=
o account<br>
=C2=A0 =C2=A0 =C2=A0 for the H-bit in order to verify that all routers are =
in routing<br>
=C2=A0 =C2=A0 =C2=A0 capability.<br>
<br>
This is very awkwardly worded and is really hard to decipher.=C2=A0 I *thin=
k* you<br>
mean to say this:<br>
<br>
NEW<br>
=C2=A0 =C2=A0o=C2=A0 All routers supporting the H-Bit MUST check the RI LSA=
s of all<br>
=C2=A0 =C2=A0 =C2=A0 nodes in the area to verify that all nodes support the=
 H-Bit before<br>
=C2=A0 =C2=A0 =C2=A0 actively using the H-Bit feature.<br>
END<br></blockquote><div>=C2=A0</div><div></div></div><div class=3D"gmail_q=
uote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;b=
order-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,=
204);padding-left:1ex">
Did I get that right?<br>
<br></blockquote><div>=C2=A0</div>PPE - Yes you did. I will adopt the sugge=
stion above. It is close to what I suggested to Ben earlier.<div>=C2=A0</di=
v><div>Let me know if this addresses all your comments=C2=A0</div><div><br>=
</div><div>Padma</div></div></div></div></div></div></div></div></div></div=
></div></div></div>

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From: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, "Acee Lindem (acee)" <acee@cisco.com>, "lsr@ietf.org" <lsr@ietf.org>
CC: Christian Hopps <chopps@chopps.org>
Thread-Topic: "YANG Module for IS-IS Reverse Metric" - draft-hopps-lsr-yang-isis-reverse-metric-02
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Subject: Re: [Lsr] "YANG Module for IS-IS Reverse Metric" - draft-hopps-lsr-yang-isis-reverse-metric-02
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From: meicong <meicong@huawei.com>
To: "lsr@ietf.org" <lsr@ietf.org>
CC: "draft-ietf-ospf-nssa-update@ietf.org" <draft-ietf-ospf-nssa-update@ietf.org>
Thread-Topic: some doubts about RFC3101
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Date: Thu, 5 Dec 2019 09:47:33 +0000
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Subject: [Lsr] some doubts about RFC3101
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Hi All,
Could you please provide clarification for following section 2.5.(3) in rfc=
3101.

          If the forwarding address is non-zero look up the forwarding
          address in the routing table.  For a Type-5 LSA the matching
          routing table entry must specify an intra-area or inter-area
          path through a Type-5 capable area.  For a Type-7 LSA the
          matching routing table entry must specify an intra-area path
          through the LSA's originating NSSA.  If no such path exists
          then do nothing with this LSA and consider the next in the
          list.
          [NSSA]

In the section, the matching routing table entry of the forwarding address =
is limited("an intra-area or inter-area path through a Type-5 capable area"=
 or "an intra-area path through the LSA's originating NSSA").
If the best matching routing table entry for the forwarding address does no=
t match the limited, the secondory best matching routing table entry should=
 be find or not?

e.g., the forwarding address of a Type-5 LSA is 128.185.1.1,
and there are two routing table entry int the routing table on the abr,
(128.185.1.0, 0xffffff00) intra-area route of the NSSA area,
(128.185.0.0, 0xffff0000) intra-area route of the normal area(Type-5 capabl=
e area),
The path of the forwarding address should be consider as exist or not?

Regards

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<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:NSimSun;co=
lor:black;background:#F7F7F7">Hi&nbsp;All,</span><span lang=3D"EN-US" style=
=3D"font-family:NSimSun;color:black"><br>
<span style=3D"background:#F7F7F7">Could&nbsp;you&nbsp;please&nbsp;provide&=
nbsp;clarification&nbsp;for&nbsp;following&nbsp;section&nbsp;2.5.(3)&nbsp;i=
n&nbsp;rfc3101.</span><br>
<br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;If&nbsp;the&nbsp;forwarding&nbsp;address&nbsp;is&nbsp;n=
on-zero&nbsp;look&nbsp;up&nbsp;the&nbsp;forwarding</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;address&nbsp;in&nbsp;the&nbsp;routing&nbsp;table.&nbsp;=
&nbsp;For&nbsp;a&nbsp;Type-5&nbsp;LSA&nbsp;the&nbsp;matching</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;routing&nbsp;table&nbsp;entry&nbsp;must&nbsp;specify&nb=
sp;an&nbsp;intra-area&nbsp;or&nbsp;inter-area</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;path&nbsp;through&nbsp;a&nbsp;Type-5&nbsp;capable&nbsp;=
area.&nbsp;&nbsp;For&nbsp;a&nbsp;Type-7&nbsp;LSA&nbsp;the</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;matching&nbsp;routing&nbsp;table&nbsp;entry&nbsp;must&n=
bsp;specify&nbsp;an&nbsp;intra-area&nbsp;path</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;through&nbsp;the&nbsp;LSA's&nbsp;originating&nbsp;NSSA.=
&nbsp;&nbsp;If&nbsp;no&nbsp;such&nbsp;path&nbsp;exists</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;then&nbsp;do&nbsp;nothing&nbsp;with&nbsp;this&nbsp;LSA&=
nbsp;and&nbsp;consider&nbsp;the&nbsp;next&nbsp;in&nbsp;the</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;list.</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;[NSSA]</span><br>
<br>
<span style=3D"background:#F7F7F7">In&nbsp;the&nbsp;section,&nbsp;the&nbsp;=
matching&nbsp;routing&nbsp;table&nbsp;entry&nbsp;of&nbsp;the&nbsp;forwardin=
g&nbsp;address&nbsp;is&nbsp;limited(&quot;an&nbsp;intra-area&nbsp;or&nbsp;i=
nter-area&nbsp;path&nbsp;through&nbsp;a&nbsp;Type-5&nbsp;capable&nbsp;area&=
quot;&nbsp;or&nbsp;&quot;an&nbsp;intra-area&nbsp;path&nbsp;through&nbsp;the=
&nbsp;LSA's&nbsp;originating&nbsp;NSSA&quot;).</span><br>
<span style=3D"background:#F7F7F7">If&nbsp;the&nbsp;best&nbsp;matching&nbsp=
;routing&nbsp;table&nbsp;entry&nbsp;for&nbsp;the&nbsp;forwarding&nbsp;addre=
ss&nbsp;does&nbsp;not&nbsp;match&nbsp;the&nbsp;limited,&nbsp;the&nbsp;secon=
dory&nbsp;best&nbsp;matching&nbsp;routing&nbsp;table&nbsp;entry&nbsp;should=
&nbsp;be&nbsp;find&nbsp;or&nbsp;not?</span><br>
<br>
<span style=3D"background:#F7F7F7">e.g.,&nbsp;the&nbsp;forwarding&nbsp;addr=
ess&nbsp;of&nbsp;a&nbsp;Type-5&nbsp;LSA&nbsp;is&nbsp;128.185.1.1,&nbsp;</sp=
an><br>
<span style=3D"background:#F7F7F7">and&nbsp;there&nbsp;are&nbsp;two&nbsp;ro=
uting&nbsp;table&nbsp;entry&nbsp;int&nbsp;the&nbsp;routing&nbsp;table&nbsp;=
on&nbsp;the&nbsp;abr,&nbsp;</span><br>
<span style=3D"background:#F7F7F7">(128.185.1.0,&nbsp;0xffffff00)&nbsp;intr=
a-area&nbsp;route&nbsp;of&nbsp;the&nbsp;NSSA&nbsp;area,</span><br>
<span style=3D"background:#F7F7F7">(128.185.0.0,&nbsp;0xffff0000)&nbsp;intr=
a-area&nbsp;route&nbsp;of&nbsp;the&nbsp;normal&nbsp;area(Type-5&nbsp;capabl=
e&nbsp;area),</span><br>
<span style=3D"background:#F7F7F7">The&nbsp;path&nbsp;of&nbsp;the&nbsp;forw=
arding&nbsp;address&nbsp;should&nbsp;be&nbsp;consider&nbsp;as&nbsp;exist&nb=
sp;or&nbsp;not?</span><br>
<br>
<span style=3D"background:#F7F7F7">Regards</span></span><span lang=3D"EN-US=
"><o:p></o:p></span></p>
</div>
</body>
</html>

--_000_C45D89487DC65947BCBD4149DD0967C3341A9A68DGGEML503MBXchi_--


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: meicong <meicong@huawei.com>, "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: [Lsr] some doubts about RFC3101
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Subject: Re: [Lsr] some doubts about RFC3101
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From nobody Thu Dec  5 05:45:02 2019
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From: Barry Leiba <barryleiba@computer.org>
Date: Thu, 5 Dec 2019 08:44:42 -0500
Message-ID: <CALaySJJLRLCtRa=p7kW6cYCK0L2wpB9BsQybOEN7iCv1kQ+NfQ@mail.gmail.com>
To: Padma Pillay-Esnault <padma.ietf@gmail.com>
Cc: The IESG <iesg@ietf.org>, draft-ietf-ospf-ospfv2-hbit@ietf.org,  Yingzhen Qu <yingzhen.ietf@gmail.com>, Alvaro Retana <aretana.ietf@gmail.com>,  lsr-chairs@ietf.org, lsr@ietf.org
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/T4YhJoW_d7fslu7QkdUCV3cZk24>
Subject: Re: [Lsr] Barry Leiba's No Objection on draft-ietf-ospf-ospfv2-hbit-11: (with COMMENT)
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Thanks, Padma... the new paragraph now seems completely clear to me!
Thanks for the work on this.

Barry

On Thu, Dec 5, 2019 at 1:03 AM Padma Pillay-Esnault
<padma.ietf@gmail.com> wrote:
>
> Hi Barry
>
> Thank you for your review
>
> See below PPE for my comments
>
> On Wed, Dec 4, 2019 at 12:47 PM Barry Leiba via Datatracker <noreply@ietf=
.org> wrote:
>>
>> Barry Leiba has entered the following ballot position for
>> draft-ietf-ospf-ospfv2-hbit-11: No Objection
>>
>> When responding, please keep the subject line intact and reply to all
>> email addresses included in the To and CC lines. (Feel free to cut this
>> introductory paragraph, however.)
>>
>>
>> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.htm=
l
>> for more information about IESG DISCUSS and COMMENT positions.
>>
>>
>> The document, along with other ballot positions, can be found here:
>> https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/
>>
>>
>>
>> ----------------------------------------------------------------------
>> COMMENT:
>> ----------------------------------------------------------------------
>>
>> I'm going to complain about some wording in Section 5 that Ben already c=
alled
>> out, but I'll try to put in some specific suggestions for corrections he=
re:
>>
>>    In normal operation, there is no guarantee that the RI LSA will reach
>>    all routers in an area in a timely manner, which may result in
>>    forwarding loops in partial deployments.
>>
>> This wording makes it sound exactly the opposite of what you mean, that =
if the
>> RI LSA *does* reach all routers in a timely manner it can cause forwardi=
ng
>> loops.  I suggest this:
>>
>> NEW
>>    In normal operation, it is possible that the RI LSA will fail to
>>    reach all routers in an area in a timely manner.  That can result
>>    in forwarding loops in partial deployments.
>> END
>>
> PPE - See below for the whole paragraph change.
>
>>
>>    For example, if a new
>>    router joins an area, which previously had only H-bit capable routers
>>    with H-bit set then it may take some time for the RI to propagate to
>>    all routers.
>>
>> First, change "area, which" to "area that" (no comma).  That fixes a usa=
ge
>> problem.
>>
>> But second, Ben and I are both unsure whether you mean that the new rout=
er does
>> or doesn't support the H bit, or whether it matters.  Maybe the right ap=
proach
>> here is to say a little more about what happens.  Something like this (a=
djust
>> as needed to make it correct):
>>
>> NEW
>>    For example, if a new
>>    router joins an area that previously had only H-bit capable routers
>>    with H-bit set then it may take some time for the RI to propagate to
>>    all routers.  While it is propagating, the area as a whole is unsure =
of
>>    the status of the new router, and that can cause <what problem?>
>> END
>>
>
> PPE - I see what you mean.
> See below combining your suggestion and the one I made to Ben earlier.
>
> Suggested NEW (whole paragraph):
> In normal operation, it is possible that the RI LSA will fail to reach al=
l routers in an area in a timely manner.  For example, if a new router with=
out H-bit support joins an area that previously had only H-bit capable rout=
ers with H-bit set then it may take some time for the RI to propagate to al=
l routers. While it is propagating, the routers in the area will gradually =
detect the presence of a router not supporting the capability and revert ba=
ck to normal SPF calculation. During the propagation time, the area as a wh=
ole is unsure of the status of the new router, and that can cause temporary=
 transient loops.
>  END
>
>>    o  All routers, with the H-bit set, MUST advertise all of the
>>       router's non-stub links with a metric equal to MaxLinkMetric
>>
>> Both commas need to be removed here.
>
>
> PPE - ok
>>
>>
>>    o  All routers supporting H-Bit MUST check all the RI LSAs of nodes
>>       in the area before actively running the modified SPF to account
>>       for the H-bit in order to verify that all routers are in routing
>>       capability.
>>
>> This is very awkwardly worded and is really hard to decipher.  I *think*=
 you
>> mean to say this:
>>
>> NEW
>>    o  All routers supporting the H-Bit MUST check the RI LSAs of all
>>       nodes in the area to verify that all nodes support the H-Bit befor=
e
>>       actively using the H-Bit feature.
>> END
>
>
>>
>> Did I get that right?
>>
>
> PPE - Yes you did. I will adopt the suggestion above. It is close to what=
 I suggested to Ben earlier.
>
> Let me know if this addresses all your comments
>
> Padma


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Date: Thu, 5 Dec 2019 09:30:59 -0800
In-Reply-To: <83E52E7D-F38B-4676-8A62-80DAA5233DDA@cisco.com>
Cc: "lsr@ietf.org" <lsr@ietf.org>, Christian Hopps <chopps@chopps.org>
To: "Acee Lindem (acee)" <acee@cisco.com>
References: <83E52E7D-F38B-4676-8A62-80DAA5233DDA@cisco.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/KqsRD5UfGZEfcPY7z-vLwLsI9ik>
Subject: Re: [Lsr] "YANG Module for IS-IS Reverse Metric" - draft-hopps-lsr-yang-isis-reverse-metric-02
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I support WG adoption of this document.

Tony


> On Nov 25, 2019, at 4:27 AM, Acee Lindem (acee) <acee@cisco.com> =
wrote:
>=20
> This begins a two week LSR Working Group adoption call for the subject =
document.
> =20
> =
https://datatracker.ietf.org/doc/draft-hopps-lsr-yang-isis-reverse-metric/=
 =
<https://datatracker.ietf.org/doc/draft-hopps-lsr-yang-isis-reverse-metric=
/>
> =20
> Please indicate your support or objection to adoption to the LSR list =
(lsr@ietf.org <mailto:lsr@ietf.org>) prior to 12:00 AM UTC on December =
10th, 2019.
> =20
> Thanks,
> Acee
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org <mailto:Lsr@ietf.org>
> https://www.ietf.org/mailman/listinfo/lsr =
<https://www.ietf.org/mailman/listinfo/lsr>

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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><div =
class=3D""><br class=3D""></div>I support WG adoption of this =
document.<div class=3D""><br class=3D""></div><div =
class=3D"">Tony</div><div class=3D""><br class=3D""><div><br =
class=3D""><blockquote type=3D"cite" class=3D""><div class=3D"">On Nov =
25, 2019, at 4:27 AM, Acee Lindem (acee) &lt;<a =
href=3D"mailto:acee@cisco.com" class=3D"">acee@cisco.com</a>&gt; =
wrote:</div><br class=3D"Apple-interchange-newline"><div class=3D""><div =
class=3D"WordSection1" style=3D"page: WordSection1; caret-color: rgb(0, =
0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
text-decoration: none;"><div style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: Calibri, sans-serif;" class=3D""><span =
style=3D"font-size: 11pt;" class=3D"">This begins a two week LSR Working =
Group adoption call for the subject document.<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: Calibri, sans-serif;" class=3D""><span =
style=3D"font-size: 11pt;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0in 0in =
0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" =
class=3D""><span style=3D"font-size: 11pt;" class=3D""><a =
href=3D"https://datatracker.ietf.org/doc/draft-hopps-lsr-yang-isis-reverse=
-metric/" style=3D"color: rgb(149, 79, 114); text-decoration: =
underline;" =
class=3D"">https://datatracker.ietf.org/doc/draft-hopps-lsr-yang-isis-reve=
rse-metric/</a><o:p class=3D""></o:p></span></div><div style=3D"margin: =
0in 0in 0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" =
class=3D""><span style=3D"font-size: 11pt;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0in 0in =
0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" =
class=3D""><span style=3D"font-size: 11pt;" class=3D"">Please indicate =
your support or objection to adoption to the LSR list (<a =
href=3D"mailto:lsr@ietf.org" style=3D"color: rgb(149, 79, 114); =
text-decoration: underline;" class=3D"">lsr@ietf.org</a>) prior to 12:00 =
AM UTC on December 10<sup class=3D"">th</sup>, 2019.<o:p =
class=3D""></o:p></span></div><div style=3D"margin: 0in 0in 0.0001pt; =
font-size: 12pt; font-family: Calibri, sans-serif;" class=3D""><span =
style=3D"font-size: 11pt;" class=3D""><o:p =
class=3D"">&nbsp;</o:p></span></div><div style=3D"margin: 0in 0in =
0.0001pt; font-size: 12pt; font-family: Calibri, sans-serif;" =
class=3D""><span style=3D"font-size: 11pt;" class=3D"">Thanks,<br =
class=3D"">Acee<o:p class=3D""></o:p></span></div></div><span =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
14px; font-style: normal; font-variant-caps: normal; font-weight: =
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text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; float: none; =
display: inline !important;" =
class=3D"">_______________________________________________</span><br =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
14px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none;" class=3D""><span =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
14px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none; float: none; =
display: inline !important;" class=3D"">Lsr mailing list</span><br =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
14px; font-style: normal; font-variant-caps: normal; font-weight: =
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text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none;" class=3D""><a =
href=3D"mailto:Lsr@ietf.org" style=3D"color: rgb(149, 79, 114); =
text-decoration: underline; font-family: Helvetica; font-size: 14px; =
font-style: normal; font-variant-caps: normal; font-weight: normal; =
letter-spacing: normal; orphans: auto; text-align: start; text-indent: =
0px; text-transform: none; white-space: normal; widows: auto; =
word-spacing: 0px; -webkit-text-size-adjust: auto; =
-webkit-text-stroke-width: 0px;" class=3D"">Lsr@ietf.org</a><br =
style=3D"caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: =
14px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; text-decoration: none;" class=3D""><a =
href=3D"https://www.ietf.org/mailman/listinfo/lsr" style=3D"color: =
rgb(149, 79, 114); text-decoration: underline; font-family: Helvetica; =
font-size: 14px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
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From: "Acee Lindem (acee)" <acee@cisco.com>
To: "lsr@ietf.org" <lsr@ietf.org>
CC: Yingzhen Qu <yingzhen.qu@futurewei.com>
Thread-Topic: IETF 106 LSR Working Group Meeting Minutes
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Subject: [Lsr] IETF 106 LSR Working Group Meeting Minutes
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From nobody Thu Dec  5 12:45:45 2019
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Date: Thu, 5 Dec 2019 12:45:29 -0800
From: Benjamin Kaduk <kaduk@mit.edu>
To: Padma Pillay-Esnault <padma.ietf@gmail.com>
Cc: The IESG <iesg@ietf.org>, draft-ietf-ospf-ospfv2-hbit@ietf.org, Yingzhen Qu <yingzhen.ietf@gmail.com>, Alvaro Retana <aretana.ietf@gmail.com>, lsr-chairs@ietf.org, lsr@ietf.org
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Subject: Re: [Lsr] Benjamin Kaduk's No Objection on draft-ietf-ospf-ospfv2-hbit-11: (with COMMENT)
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On Wed, Dec 04, 2019 at 10:22:53AM -0800, Padma Pillay-Esnault wrote:
> Hi Ben
> 
> Thanks for your thorough review.
> 
> See below PPE for my comments
> 
> On Tue, Dec 3, 2019 at 5:45 PM Benjamin Kaduk via Datatracker <
> noreply@ietf.org> wrote:
> 
> > Benjamin Kaduk has entered the following ballot position for
> > draft-ietf-ospf-ospfv2-hbit-11: No Objection
> >
> > When responding, please keep the subject line intact and reply to all
> > email addresses included in the To and CC lines. (Feel free to cut this
> > introductory paragraph, however.)
> >
> >
> > Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
> > for more information about IESG DISCUSS and COMMENT positions.
> >
> >
> > The document, along with other ballot positions, can be found here:
> > https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/
> >
> >
> >
> > ----------------------------------------------------------------------
> > COMMENT:
> > ----------------------------------------------------------------------
> >
> > Abstract
> >
> >    The Open Shortest Path First Version 2 (OSPFv2) does not have a
> >    mechanism for a node to repel transit traffic if it is on the
> >    shortest path.  This document defines a bit (Host-bit) that enables a
> >
> > nit: I suggest to add "protocol" after "(OSPFv2)" to match the definite
> > article "The".
> >
> > PPE - ok
> 
> 
> > Section 1
> >
> >    The OSPFv2 specifies a Shortest Path First (SPF) algorithm that
> >
> > (same nit about adding "protocol")
> >
> > PPE - ok
> 
> 
> >    This functionality is particularly useful for a number of use cases:
> >
> > nit: "this functionality" seems to refer to "the SPF algorithm that
> > identifies transit verticies based on their adjacencies", so I suggest
> > rewording to "such functionality would be useful" or "A mechanism to
> > move traffic away from the shortest path" or similar.
> >
> > PPE - ok will change as you suggest
> 
> Suggested NEW:
> "A mechanism to move traffic away from the shortest path is particularly
> useful for a number of use cases:"

Thanks!

> 
> > Section 4
> >
> > I suggest noting that the (lettered) sub-procedures of step (2) remain
> > unchanged.
> >
> > PPE - The original format of OSPF rfc2328 steps for SPF calculation was
> kept for clarity. Would a sentence to that effect work?

I think so.  Basically, if a reader treats "step (2)" as including the
lettered sub-procedures, then our replacement version has stripped off all
the sub-procedures and not replaced them.  So we need to tell the reader
that we don't mean to include the sub-procedures in what is being replaced.

> 
> 
> > Section 5
> >
> >    In normal operation, there is no guarantee that the RI LSA will reach
> >    all routers in an area in a timely manner, which may result in
> >    forwarding loops in partial deployments.  For example, if a new
> >    router joins an area, which previously had only H-bit capable routers
> >    with H-bit set then it may take some time for the RI to propagate to
> >    all routers.
> >
> > It's currently only implicit that this new router does not support the
> > H-bit; shall we make it explicit?
> >
> 
> PPE - ok
> 
> Suggested NEW:
>  If a new router without H-bit support joins an area, which previously had
> only H-bit capable routers
>  with H-bit set then it may take some time for the RI to propagate to all
> routers.
> 
> 
> 
> >    o  All routers supporting H-Bit MUST check all the RI LSAs of nodes
> >       in the area before actively running the modified SPF to account
> >       for the H-bit in order to verify that all routers are in routing
> >       capability.  If any router does not advertise the Host Router
> >
> > nit: the grammar here is a little wonky, particularly for "all routers
> > are in routing capability" but perhaps also for "to account for the
> > H-bit".
> >
> > PPE -  agree
> 
> Suggested NEW:
> All routers supporting H-Bit MUST check all the RI LSAs of nodes in the
> area before actively
> running the modified SPF in order to verify that all routers in the area
> support the H-bit capability.

Looks good.

> 
> Section 6
> >
> >    When calculating the path to an OSPF AS-External-LSA or NSSA-LSA
> >    [RFC3101] with a Type-2 metric, [...]
> >
> > nit: is this saying "calculating the path to [an LSA]"?  That's not a
> > usage I'm familiar with; can the AS-External-LSA or NSSA-LSA really
> > serve as a destination in this sense?
> >
> > PPE - suggest adding the word " prefix" which was implicit here.

Thanks!

> 
> > Section 7
> >
> > Thank you for phrasing this as "this document requests the IANA to
> > assign", since until these specific values are officially assigned we
> > are technically "squatting" on them.  (The respective registration
> > policies of Standards Action and IETF Review give us pretty good control
> > that nothing else is going to swoop in on them, though.)
> >
> >
> >
> Let me know if these changes address your comments

They look good, thanks again.

-Ben


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From: meicong <meicong@huawei.com>
To: "lsr@ietfa.amsl.com" <lsr@ietfa.amsl.com>
Thread-Topic: some doubts about RFC3101
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Date: Thu, 5 Dec 2019 09:26:03 +0000
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Subject: [Lsr] some doubts about RFC3101
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Hi All,
Could you please provide clarification for following section 2.5.(3) in rfc=
3101.

          If the forwarding address is non-zero look up the forwarding
          address in the routing table.  For a Type-5 LSA the matching
          routing table entry must specify an intra-area or inter-area
          path through a Type-5 capable area.  For a Type-7 LSA the
          matching routing table entry must specify an intra-area path
          through the LSA's originating NSSA.  If no such path exists
          then do nothing with this LSA and consider the next in the
          list.
          [NSSA]

In the section, the matching routing table entry of the forwarding address =
is limited("an intra-area or inter-area path through a Type-5 capable area"=
 or "an intra-area path through the LSA's originating NSSA").
If the best matching routing table entry for the forwarding address does no=
t match the limited, the secondory best matching routing table entry should=
 be find or not?

e.g., the forwarding address of a Type-5 LSA is 128.185.1.1,
and there are two routing table entry int the routing table on the abr,
(128.185.1.0, 0xffffff00) intra-area route of the NSSA area,
(128.185.0.0, 0xffff0000) intra-area route of the normal area(Type-5 capabl=
e area),
The path of the forwarding address should be consider as exist or not?

Regards

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<div class=3D"WordSection1">
<p class=3D"MsoNormal" align=3D"left" style=3D"text-align:left"><span lang=
=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-family:NSimSun;co=
lor:black;background:#F7F7F7">Hi&nbsp;All,</span><span lang=3D"EN-US" style=
=3D"font-family:NSimSun;color:black"><br>
<span style=3D"background:#F7F7F7">Could&nbsp;you&nbsp;please&nbsp;provide&=
nbsp;clarification&nbsp;for&nbsp;following&nbsp;section&nbsp;2.5.(3)&nbsp;i=
n&nbsp;rfc3101.</span><br>
<br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;If&nbsp;the&nbsp;forwarding&nbsp;address&nbsp;is&nbsp;n=
on-zero&nbsp;look&nbsp;up&nbsp;the&nbsp;forwarding</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;address&nbsp;in&nbsp;the&nbsp;routing&nbsp;table.&nbsp;=
&nbsp;For&nbsp;a&nbsp;Type-5&nbsp;LSA&nbsp;the&nbsp;matching</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;routing&nbsp;table&nbsp;entry&nbsp;must&nbsp;specify&nb=
sp;an&nbsp;intra-area&nbsp;or&nbsp;inter-area</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;path&nbsp;through&nbsp;a&nbsp;Type-5&nbsp;capable&nbsp;=
area.&nbsp;&nbsp;For&nbsp;a&nbsp;Type-7&nbsp;LSA&nbsp;the</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;matching&nbsp;routing&nbsp;table&nbsp;entry&nbsp;must&n=
bsp;specify&nbsp;an&nbsp;intra-area&nbsp;path</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;through&nbsp;the&nbsp;LSA's&nbsp;originating&nbsp;NSSA.=
&nbsp;&nbsp;If&nbsp;no&nbsp;such&nbsp;path&nbsp;exists</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;then&nbsp;do&nbsp;nothing&nbsp;with&nbsp;this&nbsp;LSA&=
nbsp;and&nbsp;consider&nbsp;the&nbsp;next&nbsp;in&nbsp;the</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;list.</span><br>
<span style=3D"background:#F7F7F7">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;[NSSA]</span><br>
<br>
<span style=3D"background:#F7F7F7">In&nbsp;the&nbsp;section,&nbsp;the&nbsp;=
matching&nbsp;routing&nbsp;table&nbsp;entry&nbsp;of&nbsp;the&nbsp;forwardin=
g&nbsp;address&nbsp;is&nbsp;limited(&quot;an&nbsp;intra-area&nbsp;or&nbsp;i=
nter-area&nbsp;path&nbsp;through&nbsp;a&nbsp;Type-5&nbsp;capable&nbsp;area&=
quot;&nbsp;or&nbsp;&quot;an&nbsp;intra-area&nbsp;path&nbsp;through&nbsp;the=
&nbsp;LSA's&nbsp;originating&nbsp;NSSA&quot;).</span><br>
<span style=3D"background:#F7F7F7">If&nbsp;the&nbsp;best&nbsp;matching&nbsp=
;routing&nbsp;table&nbsp;entry&nbsp;for&nbsp;the&nbsp;forwarding&nbsp;addre=
ss&nbsp;does&nbsp;not&nbsp;match&nbsp;the&nbsp;limited,&nbsp;the&nbsp;secon=
dory&nbsp;best&nbsp;matching&nbsp;routing&nbsp;table&nbsp;entry&nbsp;should=
&nbsp;be&nbsp;find&nbsp;or&nbsp;not?</span><br>
<br>
<span style=3D"background:#F7F7F7">e.g.,&nbsp;the&nbsp;forwarding&nbsp;addr=
ess&nbsp;of&nbsp;a&nbsp;Type-5&nbsp;LSA&nbsp;is&nbsp;128.185.1.1,&nbsp;</sp=
an><br>
<span style=3D"background:#F7F7F7">and&nbsp;there&nbsp;are&nbsp;two&nbsp;ro=
uting&nbsp;table&nbsp;entry&nbsp;int&nbsp;the&nbsp;routing&nbsp;table&nbsp;=
on&nbsp;the&nbsp;abr,&nbsp;</span><br>
<span style=3D"background:#F7F7F7">(128.185.1.0,&nbsp;0xffffff00)&nbsp;intr=
a-area&nbsp;route&nbsp;of&nbsp;the&nbsp;NSSA&nbsp;area,</span><br>
<span style=3D"background:#F7F7F7">(128.185.0.0,&nbsp;0xffff0000)&nbsp;intr=
a-area&nbsp;route&nbsp;of&nbsp;the&nbsp;normal&nbsp;area(Type-5&nbsp;capabl=
e&nbsp;area),</span><br>
<span style=3D"background:#F7F7F7">The&nbsp;path&nbsp;of&nbsp;the&nbsp;forw=
arding&nbsp;address&nbsp;should&nbsp;be&nbsp;consider&nbsp;as&nbsp;exist&nb=
sp;or&nbsp;not?</span><br>
<br>
<span style=3D"background:#F7F7F7">Regards</span></span><span lang=3D"EN-US=
"><o:p></o:p></span></p>
</div>
</body>
</html>

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From: "Acee Lindem (acee)" <acee@cisco.com>
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Subject: Re: [Lsr] some doubts about RFC3101
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--_000_87B4F90C720B473F91D2BE1A80209085ciscocom_--


From nobody Fri Dec  6 10:20:59 2019
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Subject: [Lsr] IPR Disclosure Huawei Technologies Co., Ltd's Statement about IPR related to draft-ietf-lsr-flex-algo
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Dear Peter Psenak, Shraddha Hegde, Clarence Filsfils, Ketan Talaulikar, Arkadiy Gulko:


An IPR disclosure that pertains to your Internet-Draft entitled "IGP Flexible
Algorithm" (draft-ietf-lsr-flex-algo) was submitted to the IETF Secretariat
on 2019-12-05 and has been posted on the "IETF Page of Intellectual Property
Rights Disclosures" (https://datatracker.ietf.org/ipr/3910/). The title of
the IPR disclosure is "Huawei Technologies Co.,Ltd's Statement about IPR
related to draft-ietf-lsr-flex-algo"


Thank you

IETF Secretariat


From nobody Fri Dec  6 13:54:21 2019
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A new Request for Comments is now available in online RFC libraries.

        
        RFC 8665

        Title:      OSPF Extensions for Segment Routing 
        Author:     P. Psenak, Ed.,
                    S. Previdi, Ed.,
                    C. Filsfils,
                    H. Gredler,
                    R. Shakir,
                    W. Henderickx,
                    J. Tantsura
        Status:     Standards Track
        Stream:     IETF
        Date:       December 2019
        Mailbox:    ppsenak@cisco.com, 
                    stefano@previdi.net, 
                    cfilsfil@cisco.com,
                    hannes@rtbrick.com, 
                    robjs@google.com,
                    wim.henderickx@nokia.com, 
                    jefftant.ietf@gmail.com
        Pages:      25
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-ospf-segment-routing-extensions-27.txt

        URL:        https://www.rfc-editor.org/info/rfc8665

        DOI:        10.17487/RFC8665

Segment Routing (SR) allows a flexible definition of end-to-end paths
within IGP topologies by encoding paths as sequences of topological
subpaths called "segments". These segments are advertised by the
link-state routing protocols (IS-IS and OSPF).

This document describes the OSPFv2 extensions required for Segment
Routing.

This document is a product of the Open Shortest Path First IGP Working Group of the IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the 
standardization state and status of this protocol.  Distribution of this 
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The RFC Editor Team
Association Management Solutions, LLC


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Subject: [Lsr] =?utf-8?q?RFC_8666_on_OSPFv3_Extensions_for_Segment_Routin?= =?utf-8?q?g?=
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A new Request for Comments is now available in online RFC libraries.

        
        RFC 8666

        Title:      OSPFv3 Extensions for Segment Routing 
        Author:     P. Psenak, Ed.,
                    S. Previdi, Ed.
        Status:     Standards Track
        Stream:     IETF
        Date:       December 2019
        Mailbox:    ppsenak@cisco.com, 
                    stefano@previdi.net
        Pages:      18
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-ospf-ospfv3-segment-routing-extensions-23.txt

        URL:        https://www.rfc-editor.org/info/rfc8666

        DOI:        10.17487/RFC8666

Segment Routing (SR) allows a flexible definition of end-to-end paths
within IGP topologies by encoding paths as sequences of topological
subpaths called "segments". These segments are advertised by the
link-state routing protocols (IS-IS and OSPF).

This document describes the OSPFv3 extensions required for Segment
Routing with the MPLS data plane.

This document is a product of the Link State Routing Working Group of the IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
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Association Management Solutions, LLC



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A new Request for Comments is now available in online RFC libraries.

        
        RFC 8667

        Title:      IS-IS Extensions for Segment Routing 
        Author:     S. Previdi, Ed.,
                    L. Ginsberg, Ed.,
                    C. Filsfils,
                    A. Bashandy,
                    H. Gredler,
                    B. Decraene
        Status:     Standards Track
        Stream:     IETF
        Date:       December 2019
        Mailbox:    stefano@previdi.net, 
                    ginsberg@cisco.com, 
                    cfilsfil@cisco.com,
                    abashandy.ietf@gmail.com, 
                    hannes@rtbrick.com,
                    bruno.decraene@orange.com
        Pages:      28
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-isis-segment-routing-extensions-25.txt

        URL:        https://www.rfc-editor.org/info/rfc8667

        DOI:        10.17487/RFC8667

Segment Routing (SR) allows for a flexible definition of end-to-end
paths within IGP topologies by encoding paths as sequences of
topological sub-paths, called "segments". These segments are
advertised by the link-state routing protocols (IS-IS and OSPF).

This document describes the IS-IS extensions that need to be
introduced for Segment Routing operating on an MPLS data plane.

This document is a product of the Link State Routing Working Group of the IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
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unlimited distribution.


The RFC Editor Team
Association Management Solutions, LLC



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Subject: [Lsr] =?utf-8?q?RFC_8668_on_Advertising_Layer_2_Bundle_Member_Li?= =?utf-8?q?nk_Attributes_in_IS-IS?=
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A new Request for Comments is now available in online RFC libraries.

        
        RFC 8668

        Title:      Advertising Layer 2 Bundle Member 
                    Link Attributes in IS-IS 
        Author:     L. Ginsberg, Ed.,
                    A. Bashandy, 
                    C. Filsfils,
                    M. Nanduri,
                    E. Aries
        Status:     Standards Track
        Stream:     IETF
        Date:       December 2019
        Mailbox:    ginsberg@cisco.com, 
                    abashandy.ietf@gmail.com, 
                    cf@cisco.com,
                    mohan.nanduri@oracle.com, 
                    exa@arrcus.com
        Pages:      17
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-isis-l2bundles-07.txt

        URL:        https://www.rfc-editor.org/info/rfc8668

        DOI:        10.17487/RFC8668

There are deployments where the Layer 3 interface on which IS-IS
operates is a Layer 2 interface bundle. Existing IS-IS advertisements
only support advertising link attributes of the Layer 3 interface. If
entities external to IS-IS wish to control traffic flows on the
individual physical links that comprise the Layer 2 interface bundle,
link attribute information about the bundle members is required.

This document introduces the ability for IS-IS to advertise the link
attributes of Layer 2 (L2) Bundle Members.

This document is a product of the IS-IS for IP Internets Working Group of the IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
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The RFC Editor Team
Association Management Solutions, LLC



From nobody Sun Dec  8 17:30:36 2019
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Hi, Folks:

We submitted the updated version of this draft, which clarified the =
scenarios based on the presentation at IETF 106, added more contents for =
the "Implementation Consideration" section to reflect the experts' =
comments.
More comments/Proposals are welcome.

Thanks in advance.


Best Regards.

Aijun Wang
China Telecom

-----=E9=82=AE=E4=BB=B6=E5=8E=9F=E4=BB=B6-----
=E5=8F=91=E4=BB=B6=E4=BA=BA: internet-drafts@ietf.org =
[mailto:internet-drafts@ietf.org]=20
=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2019=E5=B9=B412=E6=9C=889=E6=97=A5 =
9:20
=E6=94=B6=E4=BB=B6=E4=BA=BA: Zhibo Hu; Aijun Wang
=E4=B8=BB=E9=A2=98: New Version Notification for =
draft-wang-lsr-prefix-unreachable-annoucement-01.txt


A new version of I-D, =
draft-wang-lsr-prefix-unreachable-annoucement-01.txt
has been successfully submitted by Aijun Wang and posted to the IETF =
repository.

Name:		draft-wang-lsr-prefix-unreachable-annoucement
Revision:	01
Title:		Prefix Unreachable Announcement
Document date:	2019-12-09
Group:		Individual Submission
Pages:		7
URL:            =
https://www.ietf.org/internet-drafts/draft-wang-lsr-prefix-unreachable-an=
noucement-01.txt
Status:         =
https://datatracker.ietf.org/doc/draft-wang-lsr-prefix-unreachable-annouc=
ement/
Htmlized:       =
https://tools.ietf.org/html/draft-wang-lsr-prefix-unreachable-annoucement=
-01
Htmlized:       =
https://datatracker.ietf.org/doc/html/draft-wang-lsr-prefix-unreachable-a=
nnoucement
Diff:           =
https://www.ietf.org/rfcdiff?url2=3Ddraft-wang-lsr-prefix-unreachable-ann=
oucement-01

Abstract:
   This document describes the mechanism that can be used to announce
   the unreachable prefixes for service fast convergence.

                                                                         =
        =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.

The IETF Secretariat



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Thread-Topic: OSPF/IS-IS Segment Routing RFCs - MPLS Dataplane
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Subject: [Lsr] OSPF/IS-IS Segment Routing RFCs - MPLS Dataplane
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From: meicong <meicong@huawei.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: [Lsr] some doubts about RFC3101
Thread-Index: AdWr1aBbNT84SnIJSBmHgKuw0loCOAAMFBSAAKSfT+A=
Date: Mon, 9 Dec 2019 14:10:45 +0000
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From: Kyle Rose <krose@krose.org>
Date: Mon, 9 Dec 2019 11:27:43 -0500
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To: Padma Pillay-Esnault <padma.ietf@gmail.com>
Cc: TSV-ART <tsv-art@ietf.org>, last-call@ietf.org,  draft-ietf-ospf-ospfv2-hbit.all@ietf.org, lsr@ietf.org
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Subject: Re: [Lsr] Tsvart last call review of draft-ietf-ospf-ospfv2-hbit-10
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Draft 11 satisfies all points I made in my review. Thanks.

Kyle


On Thu, Oct 31, 2019 at 6:50 PM Padma Pillay-Esnault <padma.ietf@gmail.com>
wrote:

> Hi Kyle
>
> Thank you for your review
>
> Please see below PPE
>
> On Thu, Oct 31, 2019 at 2:47 PM Kyle Rose via Datatracker <
> noreply@ietf.org> wrote:
>
>> Reviewer: Kyle Rose
>> Review result: Ready with Nits
>>
>> This document has been reviewed as part of the transport area review
>> team's
>> ongoing effort to review key IETF documents. These comments were written
>> primarily for the transport area directors, but are copied to the
>> document's
>> authors and WG to allow them to address any issues raised and also to the
>> IETF
>> discussion list for information.
>>
>> When done at the time of IETF Last Call, the authors should consider this
>> review as part of the last-call comments they receive. Please always CC
>> tsv-art@ietf.org if you reply to or forward this review.
>>
>> This document is basically ready. I have the following comments:
>>
>> * LSA should be defined where it is first used.
>>
>
> PPE - Fixed for next version of draft
>
> * I'm curious what happens if a router sets the H-bit when it is on the
>> only
>> feasible transit path.
>>
>
> PPE - The router with the H-bit set will not be "on the only feasible
> transit path" to other destinations.  The H-bit functionality will exclude
> the host router from the path calculation in the SPF.
>
>
>> * In the security considerations, the document states:
>>
>> q( The feature, however does introduce the flooding of a capability
>>    information that allows discovery and verification that all routers
>>    in an area are capable before turning on the feature )
>>
>> I'm not sure "flooding" is the right term here, as the communication
>> comprising the OSPF control plane is not new: only a single bit has a
>> new meaning. This statement is also worded awkwardly, but without
>> a clearer understanding of what is meant, I don't know that I can
>> suggest alternative wording.
>>
>>
> PPE: OSPF will flood the LSA containing the capability... Perhaps
> "advertising" instead of flooding.
> See below:
>
> OLD:
> The feature, however does introduce the flooding of a capability
>    information that allows discovery and verification that all routers
>    in an area are capable before turning on the feature.
>
> SUGGESTED NEW:
> The feature introduces the advertising of a host router capability
> information to all OSPFv2 routers
>    in an area. This information can be leveraged for discovery and
> verification that all routers in the
> area support the capability before the feature is turned on.
>
> Please let me know if this addresses your comment.
>
> Thanks
> Padma
>

--000000000000aa3cac059947e0a0
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<div dir=3D"ltr"><div>Draft 11 satisfies all points I made in my review. Th=
anks.</div><div><br></div><div>Kyle</div><div><br></div></div><br><div clas=
s=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Oct 31, 201=
9 at 6:50 PM Padma Pillay-Esnault &lt;<a href=3D"mailto:padma.ietf@gmail.co=
m">padma.ietf@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_=
quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,=
204);padding-left:1ex"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><=
div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr">Hi=C2=A0=
Kyle<div><br></div><div>Thank you for your review</div><div><br></div><div>=
Please see below=C2=A0PPE=C2=A0</div></div><br><div class=3D"gmail_quote"><=
div dir=3D"ltr" class=3D"gmail_attr">On Thu, Oct 31, 2019 at 2:47 PM Kyle R=
ose via Datatracker &lt;<a href=3D"mailto:noreply@ietf.org" target=3D"_blan=
k">noreply@ietf.org</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quot=
e" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204)=
;padding-left:1ex">Reviewer: Kyle Rose<br>
Review result: Ready with Nits<br>
<br>
This document has been reviewed as part of the transport area review team&#=
39;s<br>
ongoing effort to review key IETF documents. These comments were written<br=
>
primarily for the transport area directors, but are copied to the document&=
#39;s<br>
authors and WG to allow them to address any issues raised and also to the I=
ETF<br>
discussion list for information.<br>
<br>
When done at the time of IETF Last Call, the authors should consider this<b=
r>
review as part of the last-call comments they receive. Please always CC<br>
<a href=3D"mailto:tsv-art@ietf.org" target=3D"_blank">tsv-art@ietf.org</a> =
if you reply to or forward this review.<br>
<br>
This document is basically ready. I have the following comments:<br>
<br>
* LSA should be defined where it is first used.<br></blockquote><div><br></=
div><div>PPE - Fixed for next version of draft =C2=A0<br></div><div><br></d=
iv><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord=
er-left:1px solid rgb(204,204,204);padding-left:1ex">
* I&#39;m curious what happens if a router sets the H-bit when it is on the=
 only<br>
feasible transit path.<br></blockquote><br>PPE -=C2=A0The router with the H=
-bit set will not be &quot;on the only feasible transit path&quot; to other=
 destinations.=C2=A0 The H-bit functionality will exclude the host router f=
rom the path calculation in the SPF.<div>=C2=A0</div><blockquote class=3D"g=
mail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex">
* In the security considerations, the document states:<br>
<br>
q( The feature, however does introduce the flooding of a capability<br>
=C2=A0 =C2=A0information that allows discovery and verification that all ro=
uters<br>
=C2=A0 =C2=A0in an area are capable before turning on the feature )<br>
<br>
I&#39;m not sure &quot;flooding&quot; is the right term here, as the commun=
ication<br>
comprising the OSPF control plane is not new: only a single bit has a<br>
new meaning. This statement is also worded awkwardly, but without<br>
a clearer understanding of what is meant, I don&#39;t know that I can<br>
suggest alternative wording.<br>
<br></blockquote><br>PPE: OSPF will flood the LSA containing the capability=
... Perhaps &quot;advertising&quot; instead of flooding.=C2=A0</div><div cl=
ass=3D"gmail_quote">See below:<br><br></div><div class=3D"gmail_quote">OLD:=
 <br>The feature, however does introduce the flooding of a capability<br>=
=C2=A0 =C2=A0information that allows discovery and verification that all ro=
uters<br>=C2=A0 =C2=A0in an area are capable before turning on the feature.=
</div><div class=3D"gmail_quote"><br>SUGGESTED NEW:<br>The feature introduc=
es the advertising of a host router capability information to all OSPFv2 ro=
uters<br>=C2=A0 =C2=A0in an area. This information can be leveraged for dis=
covery and verification that all routers in the <br>area support the capabi=
lity before the feature is turned on.</div><div class=3D"gmail_quote"><br><=
/div><div class=3D"gmail_quote">Please let me know if this addresses your c=
omment.</div><div class=3D"gmail_quote"><br></div><div class=3D"gmail_quote=
">Thanks</div><div class=3D"gmail_quote">Padma</div></div></div></div></div=
></div></div>
</blockquote></div>

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From: Padma Pillay-Esnault <padma.ietf@gmail.com>
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To: Kyle Rose <krose@krose.org>
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Subject: Re: [Lsr] Tsvart last call review of draft-ietf-ospf-ospfv2-hbit-10
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Thanks Kyle for your review.

Padma

Sent from my iPhone

> On Dec 9, 2019, at 08:27, Kyle Rose <krose@krose.org> wrote:
>=20
> =EF=BB=BF
> Draft 11 satisfies all points I made in my review. Thanks.
>=20
> Kyle
>=20
>=20
>> On Thu, Oct 31, 2019 at 6:50 PM Padma Pillay-Esnault <padma.ietf@gmail.co=
m> wrote:
>> Hi Kyle
>>=20
>> Thank you for your review
>>=20
>> Please see below PPE=20
>>=20
>>> On Thu, Oct 31, 2019 at 2:47 PM Kyle Rose via Datatracker <noreply@ietf.=
org> wrote:
>>> Reviewer: Kyle Rose
>>> Review result: Ready with Nits
>>>=20
>>> This document has been reviewed as part of the transport area review tea=
m's
>>> ongoing effort to review key IETF documents. These comments were written=

>>> primarily for the transport area directors, but are copied to the docume=
nt's
>>> authors and WG to allow them to address any issues raised and also to th=
e IETF
>>> discussion list for information.
>>>=20
>>> When done at the time of IETF Last Call, the authors should consider thi=
s
>>> review as part of the last-call comments they receive. Please always CC
>>> tsv-art@ietf.org if you reply to or forward this review.
>>>=20
>>> This document is basically ready. I have the following comments:
>>>=20
>>> * LSA should be defined where it is first used.
>>=20
>> PPE - Fixed for next version of draft =20
>>=20
>>> * I'm curious what happens if a router sets the H-bit when it is on the o=
nly
>>> feasible transit path.
>>=20
>> PPE - The router with the H-bit set will not be "on the only feasible tra=
nsit path" to other destinations.  The H-bit functionality will exclude the h=
ost router from the path calculation in the SPF.
>> =20
>>> * In the security considerations, the document states:
>>>=20
>>> q( The feature, however does introduce the flooding of a capability
>>>    information that allows discovery and verification that all routers
>>>    in an area are capable before turning on the feature )
>>>=20
>>> I'm not sure "flooding" is the right term here, as the communication
>>> comprising the OSPF control plane is not new: only a single bit has a
>>> new meaning. This statement is also worded awkwardly, but without
>>> a clearer understanding of what is meant, I don't know that I can
>>> suggest alternative wording.
>>>=20
>>=20
>> PPE: OSPF will flood the LSA containing the capability... Perhaps "advert=
ising" instead of flooding.=20
>> See below:
>>=20
>> OLD:=20
>> The feature, however does introduce the flooding of a capability
>>    information that allows discovery and verification that all routers
>>    in an area are capable before turning on the feature.
>>=20
>> SUGGESTED NEW:
>> The feature introduces the advertising of a host router capability inform=
ation to all OSPFv2 routers
>>    in an area. This information can be leveraged for discovery and verifi=
cation that all routers in the=20
>> area support the capability before the feature is turned on.
>>=20
>> Please let me know if this addresses your comment.
>>=20
>> Thanks
>> Padma

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">Thanks Kyle for your review.<div><br></div>=
<div>Padma<br><div><div><br><div dir=3D"ltr">Sent from my iPhone</div><div d=
ir=3D"ltr"><br><blockquote type=3D"cite">On Dec 9, 2019, at 08:27, Kyle Rose=
 &lt;krose@krose.org&gt; wrote:<br><br></blockquote></div><blockquote type=3D=
"cite"><div dir=3D"ltr">=EF=BB=BF<div dir=3D"ltr"><div>Draft 11 satisfies al=
l points I made in my review. Thanks.</div><div><br></div><div>Kyle</div><di=
v><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"g=
mail_attr">On Thu, Oct 31, 2019 at 6:50 PM Padma Pillay-Esnault &lt;<a href=3D=
"mailto:padma.ietf@gmail.com">padma.ietf@gmail.com</a>&gt; wrote:<br></div><=
blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-le=
ft:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div dir=3D=
"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><d=
iv dir=3D"ltr">Hi&nbsp;Kyle<div><br></div><div>Thank you for your review</di=
v><div><br></div><div>Please see below&nbsp;PPE&nbsp;</div></div><br><div cl=
ass=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Oct 31, 20=
19 at 2:47 PM Kyle Rose via Datatracker &lt;<a href=3D"mailto:noreply@ietf.o=
rg" target=3D"_blank">noreply@ietf.org</a>&gt; wrote:<br></div><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid=
 rgb(204,204,204);padding-left:1ex">Reviewer: Kyle Rose<br>
Review result: Ready with Nits<br>
<br>
This document has been reviewed as part of the transport area review team's<=
br>
ongoing effort to review key IETF documents. These comments were written<br>=

primarily for the transport area directors, but are copied to the document's=
<br>
authors and WG to allow them to address any issues raised and also to the IE=
TF<br>
discussion list for information.<br>
<br>
When done at the time of IETF Last Call, the authors should consider this<br=
>
review as part of the last-call comments they receive. Please always CC<br>
<a href=3D"mailto:tsv-art@ietf.org" target=3D"_blank">tsv-art@ietf.org</a> i=
f you reply to or forward this review.<br>
<br>
This document is basically ready. I have the following comments:<br>
<br>
* LSA should be defined where it is first used.<br></blockquote><div><br></d=
iv><div>PPE - Fixed for next version of draft &nbsp;<br></div><div><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">
* I'm curious what happens if a router sets the H-bit when it is on the only=
<br>
feasible transit path.<br></blockquote><br>PPE -&nbsp;The router with the H-=
bit set will not be "on the only feasible transit path" to other destination=
s.&nbsp; The H-bit functionality will exclude the host router from the path c=
alculation in the SPF.<div>&nbsp;</div><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddin=
g-left:1ex">
* In the security considerations, the document states:<br>
<br>
q( The feature, however does introduce the flooding of a capability<br>
&nbsp; &nbsp;information that allows discovery and verification that all rou=
ters<br>
&nbsp; &nbsp;in an area are capable before turning on the feature )<br>
<br>
I'm not sure "flooding" is the right term here, as the communication<br>
comprising the OSPF control plane is not new: only a single bit has a<br>
new meaning. This statement is also worded awkwardly, but without<br>
a clearer understanding of what is meant, I don't know that I can<br>
suggest alternative wording.<br>
<br></blockquote><br>PPE: OSPF will flood the LSA containing the capability.=
.. Perhaps "advertising" instead of flooding.&nbsp;</div><div class=3D"gmail=
_quote">See below:<br><br></div><div class=3D"gmail_quote">OLD: <br>The feat=
ure, however does introduce the flooding of a capability<br>&nbsp; &nbsp;inf=
ormation that allows discovery and verification that all routers<br>&nbsp; &=
nbsp;in an area are capable before turning on the feature.</div><div class=3D=
"gmail_quote"><br>SUGGESTED NEW:<br>The feature introduces the advertising o=
f a host router capability information to all OSPFv2 routers<br>&nbsp; &nbsp=
;in an area. This information can be leveraged for discovery and verificatio=
n that all routers in the <br>area support the capability before the feature=
 is turned on.</div><div class=3D"gmail_quote"><br></div><div class=3D"gmail=
_quote">Please let me know if this addresses your comment.</div><div class=3D=
"gmail_quote"><br></div><div class=3D"gmail_quote">Thanks</div><div class=3D=
"gmail_quote">Padma</div></div></div></div></div></div></div>
</blockquote></div>
</div></blockquote></div></div></div></body></html>=

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Date: Thu, 12 Dec 2019 09:10:03 +0800
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To: "Acee Lindem (acee)" <acee@cisco.com>,  lsr <lsr@ietf.org>
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Subject: Re: [Lsr] OSPF/IS-IS Segment Routing RFCs - MPLS Dataplane
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<html><head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8"><s=
tyle>body { line-height: 1.5; }blockquote { margin-top: 0px; margin-bottom:=
 0px; margin-left: 0.5em; }p { margin-top: 0px; margin-bottom: 0px; }div.Fo=
xDiv20191212090930431591 { }body { font-size: 10.5pt; font-family: =E5=BE=
=AE=E8=BD=AF=E9=9B=85=E9=BB=91; color: rgb(0, 0, 0); line-height: 1.5; }</s=
tyle></head><body>=0A=
<div><span></span><span style=3D"font-family: Calibri, sans-serif; font-siz=
e: 14.6667px; line-height: normal;">congratulations to the authors</span></=
div>=0A=
<div><br></div><div>Zhenqiang Li</div><hr style=3D"width: 210px; height: 1p=
x;" color=3D"#b5c4df" size=3D"1" align=3D"left">=0A=
<div><span><div style=3D"MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE: 10p=
t"><div>li_zhenqiang@hotmail.com</div></div></span></div>=0A=
<blockquote style=3D"margin-Top: 0px; margin-Bottom: 0px; margin-Left: 0.5e=
m"><div>&nbsp;</div><div style=3D"border:none;border-top:solid #B5C4DF 1.0p=
t;padding:3.0pt 0cm 0cm 0cm"><div style=3D"PADDING-RIGHT: 8px; PADDING-LEFT=
: 8px; FONT-SIZE: 12px;FONT-FAMILY:tahoma;COLOR:#000000; BACKGROUND: #efefe=
f; PADDING-BOTTOM: 8px; PADDING-TOP: 8px"><div><b>From:</b>&nbsp;<a href=3D=
"mailto:acee@cisco.com" style=3D"color: rgb(5, 99, 193); text-decoration: u=
nderline;">Acee Lindem (acee)</a></div><div><b>Date:</b>&nbsp;2019-12-09&nb=
sp;21:55</div><div><b>To:</b>&nbsp;<a href=3D"mailto:lsr@ietf.org" style=3D=
"color: rgb(5, 99, 193); text-decoration: underline;">lsr@ietf.org</a></div=
><div><b>Subject:</b>&nbsp;[Lsr] OSPF/IS-IS Segment Routing RFCs - MPLS Dat=
aplane</div></div></div><div><div class=3D"FoxDiv20191212090930431591">=0A=
<div class=3D"WordSection1" style=3D"page: WordSection1;">=0A=
<p class=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; =
font-family: Calibri, sans-serif;"><span style=3D"font-size:11.0pt">The OSP=
F/IS-IS Segment Routing drafts have been published as RFCs. There=E2=80=99s=
 been a lot of iterations and work done here and I=E2=80=99d like to recogn=
ize the occasion as well as congratulate the authors.=0A=
<o:p></o:p></span></p>=0A=
<p class=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; =
font-family: Calibri, sans-serif;"><span style=3D"font-size:11.0pt"><o:p>&n=
bsp;</o:p></span></p>=0A=
<p class=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; =
font-family: Calibri, sans-serif;"><span style=3D"font-size:11.0pt"><o:p>&n=
bsp;</o:p></span></p>=0A=
<p class=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; =
font-family: Calibri, sans-serif;"><span style=3D"font-size:11.0pt">&nbsp;O=
SPF Segment Rouing - <a href=3D"https://www.rfc-editor.org/info/rfc8665" st=
yle=3D"color: rgb(5, 99, 193); text-decoration: underline;">=0A=
https://www.rfc-editor.org/info/rfc8665</a><o:p></o:p></span></p>=0A=
<p class=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; =
font-family: Calibri, sans-serif;"><span style=3D"font-size:11.0pt">OSPFv3 =
Segment Routing =E2=80=93 <a href=3D"https://www.rfc-editor.org/info/rfc866=
6" style=3D"color: rgb(5, 99, 193); text-decoration: underline;">=0A=
https://www.rfc-editor.org/info/rfc8666</a><o:p></o:p></span></p>=0A=
<p class=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; =
font-family: Calibri, sans-serif;"><span style=3D"font-size:11.0pt">IS-IS S=
egment Routing =E2=80=93 <a href=3D"https://www.rfc-editor.org/info/rfc8667=
" style=3D"color: rgb(5, 99, 193); text-decoration: underline;">=0A=
https://www.rfc-editor.org/info/rfc8667</a><o:p></o:p></span></p>=0A=
<p class=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; =
font-family: Calibri, sans-serif;"><span style=3D"font-size:11.0pt"><o:p>&n=
bsp;</o:p></span></p>=0A=
<p class=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; =
font-family: Calibri, sans-serif;"><span style=3D"font-size:11.0pt"><o:p>&n=
bsp;</o:p></span></p>=0A=
<p class=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; =
font-family: Calibri, sans-serif;"><span style=3D"font-size:11.0pt">Thanks,=
<br>=0A=
Acee<o:p></o:p></span></p>=0A=
<p class=3D"MsoNormal" style=3D"margin: 0in 0in 0.0001pt; font-size: 12pt; =
font-family: Calibri, sans-serif;"><span style=3D"font-size:11.0pt"><o:p>&n=
bsp;</o:p></span></p>=0A=
</div>=0A=
</div></div></blockquote>=0A=
</body></html>=

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From: "Acee Lindem (acee)" <acee@cisco.com>
To: "lsr@ietf.org" <lsr@ietf.org>
CC: Christian Hopps <chopps@chopps.org>
Thread-Topic: [Lsr] "YANG Module for IS-IS Reverse Metric" - draft-hopps-lsr-yang-isis-reverse-metric-02
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Subject: Re: [Lsr] "YANG Module for IS-IS Reverse Metric" - draft-hopps-lsr-yang-isis-reverse-metric-02
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From nobody Fri Dec 13 03:19:10 2019
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Subject: [Lsr] The LSR WG has placed draft-ketant-lsr-ospf-reverse-metric in state "Call For Adoption By WG Issued"
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The LSR WG has placed draft-ketant-lsr-ospf-reverse-metric in state
Call For Adoption By WG Issued (entered by Christian Hopps)

The document is available at
https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-reverse-metric/


From nobody Fri Dec 13 03:28:33 2019
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Subject: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-reverse-metric
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Hi LSR WG and Draft Authors,

This begins a 2 week WG adoption poll for the following draft:

  https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-reverse-metric/

Please indicate your support or objection by Dec 27th.

Authors, please respond indicating whether you are aware of any IPR that =
applies to this draft.

Thanks,
Chris & Acee.=


From nobody Fri Dec 13 03:48:44 2019
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From: Peter Psenak <ppsenak@cisco.com>
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Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-reverse-metric
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Hi Chris,

as coauthor, I support the WG adoption of this document.

thanks,
Peter

On 13/12/2019 12:28, Christian Hopps wrote:
> Hi LSR WG and Draft Authors,
> 
> This begins a 2 week WG adoption poll for the following draft:
> 
>    https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-reverse-metric/
> 
> Please indicate your support or objection by Dec 27th.
> 
> Authors, please respond indicating whether you are aware of any IPR that applies to this draft.
> 
> Thanks,
> Chris & Acee.
> 


From nobody Fri Dec 13 03:53:34 2019
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Subject: [Lsr] The LSR WG has placed draft-ketant-lsr-ospf-bfd-strict-mode in state "Call For Adoption By WG Issued"
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The LSR WG has placed draft-ketant-lsr-ospf-bfd-strict-mode in state
Call For Adoption By WG Issued (entered by Christian Hopps)

The document is available at
https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-bfd-strict-mode/


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Subject: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode
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Hi LSR WG and Draft Authors,

This begins a 2 week WG adoption poll for the following draft:

  =
https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-bfd-strict-mode/

Please indicate your support or objection by Dec 27th.

Authors, please respond indicating whether you are aware of any IPR that =
applies to this draft.

Thanks,
Chris & Acee.=


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From: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
To: Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
CC: "draft-ketant-lsr-ospf-reverse-metric@ietf.org" <draft-ketant-lsr-ospf-reverse-metric@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>
Thread-Topic: WG Adoption Call for draft-ketant-lsr-ospf-reverse-metric
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/iJmL_ixFWy2eU0w0q-RYw4GFIpY>
Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-reverse-metric
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I support this document adoption as a co-author and I am not aware of any I=
PR associated with it.

Thanks,
Ketan

-----Original Message-----
From: Christian Hopps <chopps@chopps.org>=20
Sent: 13 December 2019 16:58
To: lsr@ietf.org
Cc: Christian Hopps <chopps@chopps.org>; draft-ketant-lsr-ospf-reverse-metr=
ic@ietf.org; lsr-ads@ietf.org
Subject: WG Adoption Call for draft-ketant-lsr-ospf-reverse-metric

Hi LSR WG and Draft Authors,

This begins a 2 week WG adoption poll for the following draft:

  https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-reverse-metric/

Please indicate your support or objection by Dec 27th.

Authors, please respond indicating whether you are aware of any IPR that ap=
plies to this draft.

Thanks,
Chris & Acee.


From nobody Fri Dec 13 03:59:11 2019
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From: Peter Psenak <ppsenak@cisco.com>
To: Christian Hopps <chopps@chopps.org>, lsr@ietf.org
Cc: draft-ketant-lsr-ospf-reverse-metric@ietf.org, lsr-ads@ietf.org
References: <8338C0BA-3FF9-4F73-A1AB-499E729156A8@chopps.org> <568c47fb-0f01-2a40-1a90-3078d65d25d5@cisco.com>
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Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-reverse-metric
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I am not aware of any IPR associated with it.

thanks,
Peter


On 13/12/2019 12:48, Peter Psenak wrote:
> Hi Chris,
> 
> as coauthor, I support the WG adoption of this document.
> 
> thanks,
> Peter
> 
> On 13/12/2019 12:28, Christian Hopps wrote:
>> Hi LSR WG and Draft Authors,
>>
>> This begins a 2 week WG adoption poll for the following draft:
>>
>>     https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-reverse-metric/
>>
>> Please indicate your support or objection by Dec 27th.
>>
>> Authors, please respond indicating whether you are aware of any IPR that applies to this draft.
>>
>> Thanks,
>> Chris & Acee.
>>
> 
> 
> 


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To: Christian Hopps <chopps@chopps.org>, lsr@ietf.org
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References: <24CA2937-AA6B-4452-A181-D5A5D14E11BE@chopps.org>
From: Peter Psenak <ppsenak@cisco.com>
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Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode
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I support this document adoption as a co-author and I am not aware of 
any IPR associated with it.

thanks,
Peter

On 13/12/2019 12:54, Christian Hopps wrote:
> Hi LSR WG and Draft Authors,
> 
> This begins a 2 week WG adoption poll for the following draft:
> 
>    https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-bfd-strict-mode/
> 
> Please indicate your support or objection by Dec 27th.
> 
> Authors, please respond indicating whether you are aware of any IPR that applies to this draft.
> 
> Thanks,
> Chris & Acee.
> 


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From: "Ketan Talaulikar (ketant)" <ketant@cisco.com>
To: Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
CC: "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ketant-lsr-ospf-bfd-strict-mode@ietf.org" <draft-ketant-lsr-ospf-bfd-strict-mode@ietf.org>
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Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode
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I support the adoption of the document as a co-author and I am not aware of=
 any IPR associated with it.

Thanks,
Ketan

-----Original Message-----
From: Christian Hopps <chopps@chopps.org>=20
Sent: 13 December 2019 17:25
To: lsr@ietf.org
Cc: Christian Hopps <chopps@chopps.org>; lsr-ads@ietf.org; draft-ketant-lsr=
-ospf-bfd-strict-mode@ietf.org
Subject: WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode

Hi LSR WG and Draft Authors,

This begins a 2 week WG adoption poll for the following draft:

  https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-bfd-strict-mode/

Please indicate your support or objection by Dec 27th.

Authors, please respond indicating whether you are aware of any IPR that ap=
plies to this draft.

Thanks,
Chris & Acee.


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
CC: "draft-ketant-lsr-ospf-reverse-metric@ietf.org" <draft-ketant-lsr-ospf-reverse-metric@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>
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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
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From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
CC: "draft-ketant-lsr-ospf-reverse-metric@ietf.org" <draft-ketant-lsr-ospf-reverse-metric@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/HiAT0ypAvDwZjhz2br3-KRNTy-4>
Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-reverse-metric
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I support adoption of this draft.
Similar functionality in IS-IS (RFC 8500) has proven useful.

   Les

> -----Original Message-----
> From: Lsr <lsr-bounces@ietf.org> On Behalf Of Christian Hopps
> Sent: Friday, December 13, 2019 3:28 AM
> To: lsr@ietf.org
> Cc: draft-ketant-lsr-ospf-reverse-metric@ietf.org; lsr-ads@ietf.org; Chri=
stian
> Hopps <chopps@chopps.org>
> Subject: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-reverse-metric
>=20
> Hi LSR WG and Draft Authors,
>=20
> This begins a 2 week WG adoption poll for the following draft:
>=20
>   https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-reverse-metric/
>=20
> Please indicate your support or objection by Dec 27th.
>=20
> Authors, please respond indicating whether you are aware of any IPR that
> applies to this draft.
>=20
> Thanks,
> Chris & Acee.
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr


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From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
CC: "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ketant-lsr-ospf-bfd-strict-mode@ietf.org" <draft-ketant-lsr-ospf-bfd-strict-mode@ietf.org>
Thread-Topic: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode
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Date: Fri, 13 Dec 2019 15:15:37 +0000
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References: <24CA2937-AA6B-4452-A181-D5A5D14E11BE@chopps.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/3kQDCT48Ptv868KFsIWT5zW8mIk>
Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode
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I support adoption of this draft.
Although many implementations have added strict mode support based only on =
local configuration,  given that the adjacency state machine is altered it =
seems long overdue that protocol extensions be defined so there is more rob=
ust interoperability.

   Les

> -----Original Message-----
> From: Lsr <lsr-bounces@ietf.org> On Behalf Of Christian Hopps
> Sent: Friday, December 13, 2019 3:55 AM
> To: lsr@ietf.org
> Cc: lsr-ads@ietf.org; Christian Hopps <chopps@chopps.org>; draft-ketant-
> lsr-ospf-bfd-strict-mode@ietf.org
> Subject: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode
>=20
> Hi LSR WG and Draft Authors,
>=20
> This begins a 2 week WG adoption poll for the following draft:
>=20
>   https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-bfd-strict-mode/
>=20
> Please indicate your support or objection by Dec 27th.
>=20
> Authors, please respond indicating whether you are aware of any IPR that
> applies to this draft.
>=20
> Thanks,
> Chris & Acee.
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr


From nobody Fri Dec 13 10:33:54 2019
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Date: Fri, 13 Dec 2019 10:33:40 -0800
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: lsr@ietf.org, Christian Hopps <chopps@chopps.org>
Cc: lsr-ads@ietf.org, draft-ketant-lsr-ospf-bfd-strict-mode@ietf.org
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Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode
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I support the adoption

Cheers,
Jeff
On Dec 13, 2019, 3:54 AM -0800, Christian Hopps <chopps@chopps.org>, wrote:
> Hi LSR WG and Draft Authors,
>
> This begins a 2 week WG adoption poll for the following draft:
>
> https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-bfd-strict-mode/
>
> Please indicate your support or objection by Dec 27th.
>
> Authors, please respond indicating whether you are aware of any IPR that applies to this draft.
>
> Thanks,
> Chris & Acee.
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr

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<div name=3D=22messageBodySection=22>
<div dir=3D=22auto=22>I support the adoption</div>
</div>
<div name=3D=22messageSignatureSection=22><br />
<div class=3D=22match=46ont=22>Cheers,
<div>Jeff</div>
</div>
</div>
<div name=3D=22messageReplySection=22>On Dec 13, 2019, 3:54 AM -0800, Chr=
istian Hopps &lt;chopps=40chopps.org&gt;, wrote:<br />
<blockquote type=3D=22cite=22 class=3D=22spark=5Fquote=22 style=3D=22marg=
in: 5px 5px; padding-left: 10px; border-left: thin solid =231abc9c;=22>Hi=
 LSR WG and Draft Authors,<br />
<br />
This begins a 2 week WG adoption poll for the following draft:<br />
<br />
https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-bfd-strict-mode/<b=
r />
<br />
Please indicate your support or objection by Dec 27th.<br />
<br />
Authors, please respond indicating whether you are aware of any IPR that =
applies to this draft.<br />
<br />
Thanks,<br />
Chris &amp; Acee.<br />
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F<br />
Lsr mailing list<br />
Lsr=40ietf.org<br />
https://www.ietf.org/mailman/listinfo/lsr<br /></blockquote>
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Date: Fri, 13 Dec 2019 10:34:52 -0800
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: lsr@ietf.org, Christian Hopps <chopps@chopps.org>
Cc: draft-ketant-lsr-ospf-reverse-metric@ietf.org, lsr-ads@ietf.org
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Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-reverse-metric
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I support the adoption, finally OSPF would catch up with IS-IS ;-)

Cheers,
Jeff
On Dec 13, 2019, 3:28 AM -0800, Christian Hopps <chopps@chopps.org>, wrote:
> Hi LSR WG and Draft Authors,
>
> This begins a 2 week WG adoption poll for the following draft:
>
> https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-reverse-metric/
>
> Please indicate your support or objection by Dec 27th.
>
> Authors, please respond indicating whether you are aware of any IPR that applies to this draft.
>
> Thanks,
> Chris & Acee.
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr

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<div dir=3D=22auto=22>I support the adoption, finally OSP=46 would catch =
up with IS-IS ;-)</div>
</div>
<div name=3D=22messageSignatureSection=22><br />
<div class=3D=22match=46ont=22>Cheers,
<div>Jeff</div>
</div>
</div>
<div name=3D=22messageReplySection=22>On Dec 13, 2019, 3:28 AM -0800, Chr=
istian Hopps &lt;chopps=40chopps.org&gt;, wrote:<br />
<blockquote type=3D=22cite=22 class=3D=22spark=5Fquote=22 style=3D=22marg=
in: 5px 5px; padding-left: 10px; border-left: thin solid =231abc9c;=22>Hi=
 LSR WG and Draft Authors,<br />
<br />
This begins a 2 week WG adoption poll for the following draft:<br />
<br />
https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-reverse-metric/<br=
 />
<br />
Please indicate your support or objection by Dec 27th.<br />
<br />
Authors, please respond indicating whether you are aware of any IPR that =
applies to this draft.<br />
<br />
Thanks,<br />
Chris &amp; Acee.<br />
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
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Lsr mailing list<br />
Lsr=40ietf.org<br />
https://www.ietf.org/mailman/listinfo/lsr<br /></blockquote>
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From: Rajesh M <mrajesh@juniper.net>
To: Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
CC: "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ketant-lsr-ospf-bfd-strict-mode@ietf.org" <draft-ketant-lsr-ospf-bfd-strict-mode@ietf.org>
Thread-Topic: WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/q3KEgxx0TcAVhJ138E1SM97YQBI>
Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode
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I support the adoption of the document as a co-author and I am not aware of=
 any IPR associated with it.

Thanks,
Rajesh


Juniper Business Use Only

-----Original Message-----
From: Christian Hopps <chopps@chopps.org>=20
Sent: 13 December 2019 17:25
To: lsr@ietf.org
Cc: Christian Hopps <chopps@chopps.org>; lsr-ads@ietf.org; draft-ketant-lsr=
-ospf-bfd-strict-mode@ietf.org
Subject: WG Adoption Call for draft-ketant-lsr-ospf-bfd-strict-mode

Hi LSR WG and Draft Authors,

This begins a 2 week WG adoption poll for the following draft:

  https://urldefense.com/v3/__https://datatracker.ietf.org/doc/draft-ketant=
-lsr-ospf-bfd-strict-mode/__;!!NEt6yMaO-gk!TrBbSBif7y_waJ5NPNYxQiwnLOzHtG2S=
NYJO2avr-h_pFEv0G62FnK_reEzMfivr$=20

Please indicate your support or objection by Dec 27th.

Authors, please respond indicating whether you are aware of any IPR that ap=
plies to this draft.

Thanks,
Chris & Acee.


From nobody Mon Dec 16 07:01:36 2019
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From: Lizhenbin <lizhenbin@huawei.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, "draft-li-ospf-ospfv3-srv6-extensions@ietf.org" <draft-li-ospf-ospfv3-srv6-extensions@ietf.org>
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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Tue, 17 Dec 2019 02:44:53 -0500
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To: Jeff Tantsura <jefftant.ietf@gmail.com>
Cc: Christian Hopps <chopps@chopps.org>, draft-ketant-lsr-ospf-reverse-metric@ietf.org,  lsr@ietf.org, lsr-ads@ietf.org
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Subject: Re: [Lsr] WG Adoption Call for draft-ketant-lsr-ospf-reverse-metric
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I support.

Gyan

On Fri, Dec 13, 2019 at 1:35 PM Jeff Tantsura <jefftant.ietf@gmail.com>
wrote:

> I support the adoption, finally OSPF would catch up with IS-IS ;-)
>
> Cheers,
> Jeff
> On Dec 13, 2019, 3:28 AM -0800, Christian Hopps <chopps@chopps.org>,
> wrote:
>
> Hi LSR WG and Draft Authors,
>
> This begins a 2 week WG adoption poll for the following draft:
>
> https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-reverse-metric/
>
> Please indicate your support or objection by Dec 27th.
>
> Authors, please respond indicating whether you are aware of any IPR that
> applies to this draft.
>
> Thanks,
> Chris & Acee.
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr
>
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr
>
-- 

Gyan S. Mishra

IT Network Engineering & Technology

Verizon Communications Inc. (VZ)

13101 Columbia Pike FDC1 3rd Floor

Silver Spring, MD 20904

United States

Phone: 301 502-1347

Email: gyan.s.mishra@verizon.com

www.linkedin.com/in/networking-technologies-consultant

--0000000000009ae2260599e181ca
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<div><div dir=3D"auto">I support.</div></div><div dir=3D"auto"><br></div><d=
iv dir=3D"auto">Gyan</div><div><br><div class=3D"gmail_quote"><div dir=3D"l=
tr" class=3D"gmail_attr">On Fri, Dec 13, 2019 at 1:35 PM Jeff Tantsura &lt;=
<a href=3D"mailto:jefftant.ietf@gmail.com">jefftant.ietf@gmail.com</a>&gt; =
wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8e=
x;border-left:1px #ccc solid;padding-left:1ex">



<div>
<div name=3D"messageBodySection">
<div dir=3D"auto">I support the adoption, finally OSPF would catch up with =
IS-IS ;-)</div>
</div>
<div name=3D"messageSignatureSection"><br>
<div>Cheers,
<div>Jeff</div>
</div>
</div></div><div>
<div name=3D"messageReplySection">On Dec 13, 2019, 3:28 AM -0800, Christian=
 Hopps &lt;<a href=3D"mailto:chopps@chopps.org" target=3D"_blank">chopps@ch=
opps.org</a>&gt;, wrote:<br>
<blockquote type=3D"cite" style=3D"margin:5px 5px;padding-left:10px;border-=
left:thin solid #1abc9c">Hi LSR WG and Draft Authors,<br>
<br>
This begins a 2 week WG adoption poll for the following draft:<br>
<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-ketant-lsr-ospf-reverse-m=
etric/" target=3D"_blank">https://datatracker.ietf.org/doc/draft-ketant-lsr=
-ospf-reverse-metric/</a><br>
<br>
Please indicate your support or objection by Dec 27th.<br>
<br>
Authors, please respond indicating whether you are aware of any IPR that ap=
plies to this draft.<br>
<br>
Thanks,<br>
Chris &amp; Acee.<br>
_______________________________________________<br>
Lsr mailing list<br>
<a href=3D"mailto:Lsr@ietf.org" target=3D"_blank">Lsr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/lsr" target=3D"_blank">htt=
ps://www.ietf.org/mailman/listinfo/lsr</a><br></blockquote>
</div>
</div>

_______________________________________________<br>
Lsr mailing list<br>
<a href=3D"mailto:Lsr@ietf.org" target=3D"_blank">Lsr@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/lsr" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/mailman/listinfo/lsr</a><br>
</blockquote></div></div>-- <br><div dir=3D"ltr" class=3D"gmail_signature" =
data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div><div dir=3D"ltr"><=
div dir=3D"ltr"><div><p class=3D"MsoNormal"><span style=3D"font-family:Cali=
bri,sans-serif;color:rgb(80,0,80);background-image:initial;background-posit=
ion:initial;background-repeat:initial">Gyan S. Mishra</span><span style=3D"=
color:rgb(80,0,80);background-image:initial;background-position:initial;bac=
kground-repeat:initial"><span></span></span></p><p class=3D"MsoNormal"><spa=
n style=3D"font-family:Calibri,sans-serif;color:rgb(80,0,80);background-ima=
ge:initial;background-position:initial;background-repeat:initial">IT Networ=
k Engineering &amp;
Technology=C2=A0</span><span style=3D"color:rgb(80,0,80);background-image:i=
nitial;background-position:initial;background-repeat:initial"><span></span>=
</span></p><p class=3D"MsoNormal"><span style=3D"font-family:Calibri,sans-s=
erif;color:rgb(80,0,80);background-image:initial;background-position:initia=
l;background-repeat:initial">Verizon
Communications=C2=A0Inc. (VZ)</span><span style=3D"color:rgb(80,0,80);backg=
round-image:initial;background-position:initial;background-repeat:initial">=
<span></span></span></p><p class=3D"MsoNormal"><span style=3D"font-family:C=
alibri,sans-serif;color:rgb(80,0,80);background-image:initial;background-po=
sition:initial;background-repeat:initial">13101 Columbia Pike FDC1 3rd
Floor</span><span style=3D"color:rgb(80,0,80);background-image:initial;back=
ground-position:initial;background-repeat:initial"><span></span></span></p>=
<p class=3D"MsoNormal"><span style=3D"font-family:Calibri,sans-serif;color:=
rgb(80,0,80);background-image:initial;background-position:initial;backgroun=
d-repeat:initial">Silver Spring, MD 20904</span><span style=3D"color:rgb(80=
,0,80);background-image:initial;background-position:initial;background-repe=
at:initial"><span></span></span></p><p class=3D"MsoNormal"><span style=3D"f=
ont-family:Calibri,sans-serif;color:rgb(80,0,80);background-image:initial;b=
ackground-position:initial;background-repeat:initial">United States</span><=
span style=3D"color:rgb(80,0,80);background-image:initial;background-positi=
on:initial;background-repeat:initial"><span></span></span></p><p class=3D"M=
soNormal" style=3D"background-image:initial;background-position:initial;bac=
kground-repeat:initial"><span style=3D"font-family:Calibri,sans-serif;color=
:rgb(80,0,80)">Phone:=C2=A0301 502-1347</span><span></span></p><p class=3D"=
MsoNormal" style=3D"background-image:initial;background-position:initial;ba=
ckground-repeat:initial"><span style=3D"font-family:Calibri,sans-serif;colo=
r:rgb(80,0,80)">Email:=C2=A0<a href=3D"mailto:gyan.s.mishra@verizon.com" ta=
rget=3D"_blank"><span style=3D"color:rgb(17,85,204)">gyan.s.mishra@verizon.=
com</span></a></span><span></span></p><p class=3D"MsoNormal" style=3D"margi=
n:0in 0in 0.0001pt;background-image:initial;background-position:initial;bac=
kground-repeat:initial;font-size:12pt;font-family:&quot;Times New Roman&quo=
t;,serif">















</p><p class=3D"MsoNormal" style=3D"background-image:initial;background-pos=
ition:initial;background-repeat:initial"><span><span style=3D"font-family:&=
quot;Segoe UI&quot;,sans-serif;color:black;border:1pt none windowtext;paddi=
ng:0in;background-image:initial;background-position:initial;background-repe=
at:initial"><a href=3D"http://www.linkedin.com/in/networking-technologies-c=
onsultant" target=3D"_blank">www.linkedin.com/in/networking-technologies-co=
nsultant</a></span></span><span><span style=3D"font-family:&quot;Segoe UI&q=
uot;,sans-serif;border:1pt none windowtext;padding:0in;background-image:ini=
tial;background-position:initial;background-repeat:initial"><span></span></=
span></span></p></div><div><br></div></div></div></div></div></div>

--0000000000009ae2260599e181ca--


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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 Link State Routing WG of the IETF.

        Title           : Host Router Support for OSPFv2
        Authors         : Keyur Patel
                          Padma Pillay-Esnault
                          Manish Bhardwaj
                          Serpil Bayraktar
	Filename        : draft-ietf-ospf-ospfv2-hbit-12.txt
	Pages           : 10
	Date            : 2019-12-18

Abstract:
   The Open Shortest Path First Version 2 (OSPFv2) protocol does not
   have a mechanism for a node to repel transit traffic if it is on the
   shortest path.  This document defines a bit (Host-bit) that enables a
   router to advertise that it is a non-transit router.  It also
   describes the changes needed to support the H-bit in the domain.  In
   addition, this document updates RFC 6987 to advertise type-2 External
   and Not-So-Stubby-Area (NSSA) Link State Advertisements (LSAs) with a
   high cost in order to repel traffic effectively.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-ospf-ospfv2-hbit-12
https://datatracker.ietf.org/doc/html/draft-ietf-ospf-ospfv2-hbit-12

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ospf-ospfv2-hbit-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/


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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/IveNu2uC5LtypcfAoh1u204XF-E>
Subject: [Lsr] Questions on Prefix Unreachable Announcement
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Hi Aijun,

    My understanding of your draft https://datatracker.ietf.org/doc/draft-w=
ang-lsr-prefix-unreachable-annoucement/ as follows:
    After the ABR originates the Extended Prefix Opaque LSA, which contains=
 a prefix and its originator (i.e., the router originating the prefix), it =
will announce that the prefix is unreachable when it can not reach the pref=
ix (i.e., the prefix becomes unreachable from reachable from the ABR's pers=
pective).
     Is my understanding right?

    Should the ABR remove the prefix from the Extended Prefix Opaque LSA af=
ter it announces the prefix unreachable for a give period of time? After a =
router in another area receives the unreachable announcement of the prefix,=
 it installs a black hole route to the prefix, and then removes the black h=
ole route after a configurable time. After the black hole route derived fro=
m the unreachable announcement of the prefix is removed, it seems better to=
 remove the unreachable prefix from the LSA.

     Can the ABR just remove the prefix (i.e., the TLV for the prefix) from=
 the Extended Prefix Opaque LSA when it can not reach the prefix?


Best Regards,
Huaimo

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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-=
1">
<style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo=
ttom:0;} </style>
</head>
<body dir=3D"ltr">
<div style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size=
: 12pt; color: rgb(0, 0, 0);">
<span style=3D"color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica,=
 sans-serif; font-size: 12pt;">Hi Aijun,</span><br>
</div>
<div>
<div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
&nbsp; &nbsp; My understanding of your draft <a href=3D"https://datatracker=
.ietf.org/doc/draft-wang-lsr-prefix-unreachable-annoucement/">
https://datatracker.ietf.org/doc/draft-wang-lsr-prefix-unreachable-annoucem=
ent/</a>&nbsp;as follows:&nbsp;</div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
&nbsp; &nbsp; After the ABR originates the Extended Prefix Opaque LSA, whic=
h contains a prefix and its originator (i.e., the router originating the pr=
efix), it will announce that the prefix is unreachable when it can not reac=
h the prefix (i.e., the prefix becomes unreachable
 from reachable from the ABR's perspective).&nbsp;</div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
&nbsp; &nbsp; &nbsp;Is my understanding right?</div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
&nbsp; &nbsp; Should the ABR remove the prefix from the&nbsp;<span style=3D=
"font-family:Calibri,Arial,Helvetica,sans-serif; background-color:rgb(255,2=
55,255); display:inline!important">Extended Prefix Opaque LSA</span>&nbsp;a=
fter it announces the prefix unreachable for a give period
 of time? After a router in another area receives the unreachable announcem=
ent of the prefix, it installs a black hole route to the prefix, and then r=
emoves the black hole route after a configurable time. After the black hole=
 route derived from
<span style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; background-c=
olor:rgb(255,255,255); display:inline!important">
the unreachable announcement of the prefix is removed, it seems better to r=
emove the unreachable prefix from the LSA.&nbsp;</span></div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
<span style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; background-c=
olor:rgb(255,255,255); display:inline!important"><br>
</span></div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
<span style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; background-c=
olor:rgb(255,255,255); display:inline!important">&nbsp; &nbsp; &nbsp;Can th=
e ABR just remove the prefix (i.e., the TLV for the prefix) from&nbsp;<span=
 style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; background-color:=
rgb(255,255,255); display:inline!important">the&nbsp;</span><span style=3D"=
margin:0px; font-family:Calibri,Arial,Helvetica,sans-serif; background-colo=
r:rgb(255,255,255); display:inline!important">Extended
 Prefix Opaque LSA when&nbsp;<span style=3D"font-family:Calibri,Arial,Helve=
tica,sans-serif; background-color:rgb(255,255,255); display:inline!importan=
t">it can not reach the prefix?&nbsp;</span></span></span></div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
&nbsp; &nbsp;&nbsp;</div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
<br>
</div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
Best Regards,</div>
<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12p=
t; color:rgb(0,0,0)">
Huaimo</div>
</div>
</div>
</body>
</html>

--_000_SN6PR13MB227139E1A9EDCDE266A89848F22D0SN6PR13MB2271namp_--


From nobody Fri Dec 20 08:54:41 2019
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Cc: The IESG <iesg@ietf.org>, Yingzhen Qu <yingzhen.ietf@gmail.com>, draft-ietf-ospf-ospfv2-hbit@ietf.org, aretana.ietf@gmail.com, lsr-chairs@ietf.org, yingzhen.ietf@gmail.com, lsr@ietf.org, rfc-editor@rfc-editor.org
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Subject: [Lsr] Protocol Action: 'Host Router Support for OSPFv2' to Proposed Standard (draft-ietf-ospf-ospfv2-hbit-12.txt)
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The IESG has approved the following document:
- 'Host Router Support for OSPFv2'
  (draft-ietf-ospf-ospfv2-hbit-12.txt) as Proposed Standard

This document is the product of the Link State Routing Working Group.

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

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-ospf-ospfv2-hbit/





Technical Summary

   The Open Shortest Path First Version 2 (OSPFv2) does not have a
   mechanism for a node to repel transit traffic if it is on the
   shortest path.  This document defines a bit (Host-bit) that enables a
   router to advertise that it is a non-transit router."  It also
   describes the changes needed to support the H-bit in the domain.  In
   addition, this document updates RFC 6987 to advertise type-2 External
   and NSSA LSAs with a high cost in order to repel traffic effectively.

Working Group Summary

  Except for a long processing time, the draft has strong WG support.

Document Quality

   This is a straight forward draft, and similar function exists in ISIS and 
   OSPFv3.

Personnel

      Yingzhen Qu is the Document Shepherd.
      Alvaro Retana is the Responsible Area Director.


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Subject: [Lsr] Fwd: New Version Notification for draft-li-lsr-isis-area-proxy-01.txt
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Ho ho ho!

An update for you:
- Added MT support.
- Added SR support.
- Many little clarifications and tweaks.

Comments and questions to the authors, please.

Happy holidays,
Tony

p.s. Yes, it=E2=80=99s still a =E2=80=9Chack=E2=80=9D.  No, I still =
haven=E2=80=99t seen anything better.


> Begin forwarded message:
>=20
> From: internet-drafts@ietf.org
> Subject: New Version Notification for =
draft-li-lsr-isis-area-proxy-01.txt
> Date: December 24, 2019 at 4:32:12 PM PST
> To: "Yunxia Chen" <sarahchen@arista.com>, "Sarah Chen" =
<sarahchen@arista.com>, "Tony Li" <tony.li@tony.li>
>=20
>=20
> A new version of I-D, draft-li-lsr-isis-area-proxy-01.txt
> has been successfully submitted by Tony Li and posted to the
> IETF repository.
>=20
> Name:		draft-li-lsr-isis-area-proxy
> Revision:	01
> Title:		Area Proxy for IS-IS
> Document date:	2019-12-24
> Group:		Individual Submission
> Pages:		17
> URL:            =
https://www.ietf.org/internet-drafts/draft-li-lsr-isis-area-proxy-01.txt
> Status:         =
https://datatracker.ietf.org/doc/draft-li-lsr-isis-area-proxy/
> Htmlized:       =
https://tools.ietf.org/html/draft-li-lsr-isis-area-proxy-01
> Htmlized:       =
https://datatracker.ietf.org/doc/html/draft-li-lsr-isis-area-proxy
> Diff:           =
https://www.ietf.org/rfcdiff?url2=3Ddraft-li-lsr-isis-area-proxy-01
>=20
> Abstract:
>   Link state routing protocols have hierarchical abstraction already
>   built into them.  However, when lower levels are used for transit,
>   they must expose their internal topologies to each other, leading to
>   scale issues.
>=20
>   To avoid this, this document discusses extensions to the IS-IS
>   routing protocol that would allow level 1 areas to provide transit,
>   yet only inject an abstraction of the level 1 topology into level 2.
>   Each level 1 area is represented as a single level 2 node, thereby
>   enabling greater scale.
>=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.
>=20
> The IETF Secretariat
>=20


--Apple-Mail=_88B1040C-EEC1-4147-898B-556E1392CEED
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<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""><div =
class=3D""><br class=3D""></div><div class=3D"">Ho ho ho!</div><div =
class=3D""><br class=3D""></div><div class=3D"">An update for =
you:</div><div class=3D"">- Added MT support.</div><div class=3D"">- =
Added SR support.</div><div class=3D"">- Many little clarifications and =
tweaks.</div><div class=3D""><br class=3D""></div><div class=3D"">Comments=
 and questions to the authors, please.</div><div class=3D""><br =
class=3D""></div><div class=3D"">Happy holidays,</div><div =
class=3D""></div><div class=3D"">Tony</div><div class=3D""><br =
class=3D""></div><div class=3D"">p.s. Yes, it=E2=80=99s still a =
=E2=80=9Chack=E2=80=9D. &nbsp;No, I still haven=E2=80=99t seen anything =
better.</div><div class=3D""><br class=3D""></div><div class=3D""><div><br=
 class=3D""><blockquote type=3D"cite" class=3D""><div class=3D"">Begin =
forwarded message:</div><br class=3D"Apple-interchange-newline"><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px;" class=3D""><span style=3D"font-family: =
-webkit-system-font, Helvetica Neue, Helvetica, sans-serif; =
color:rgba(0, 0, 0, 1.0);" class=3D""><b class=3D"">From: =
</b></span><span style=3D"font-family: -webkit-system-font, Helvetica =
Neue, Helvetica, sans-serif;" class=3D""><a =
href=3D"mailto:internet-drafts@ietf.org" =
class=3D"">internet-drafts@ietf.org</a><br class=3D""></span></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px;" class=3D""><span style=3D"font-family: =
-webkit-system-font, Helvetica Neue, Helvetica, sans-serif; =
color:rgba(0, 0, 0, 1.0);" class=3D""><b class=3D"">Subject: =
</b></span><span style=3D"font-family: -webkit-system-font, Helvetica =
Neue, Helvetica, sans-serif;" class=3D""><b class=3D"">New Version =
Notification for draft-li-lsr-isis-area-proxy-01.txt</b><br =
class=3D""></span></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px;" class=3D""><span =
style=3D"font-family: -webkit-system-font, Helvetica Neue, Helvetica, =
sans-serif; color:rgba(0, 0, 0, 1.0);" class=3D""><b class=3D"">Date: =
</b></span><span style=3D"font-family: -webkit-system-font, Helvetica =
Neue, Helvetica, sans-serif;" class=3D"">December 24, 2019 at 4:32:12 PM =
PST<br class=3D""></span></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px;" class=3D""><span=
 style=3D"font-family: -webkit-system-font, Helvetica Neue, Helvetica, =
sans-serif; color:rgba(0, 0, 0, 1.0);" class=3D""><b class=3D"">To: =
</b></span><span style=3D"font-family: -webkit-system-font, Helvetica =
Neue, Helvetica, sans-serif;" class=3D"">"Yunxia Chen" &lt;<a =
href=3D"mailto:sarahchen@arista.com" =
class=3D"">sarahchen@arista.com</a>&gt;, "Sarah Chen" &lt;<a =
href=3D"mailto:sarahchen@arista.com" =
class=3D"">sarahchen@arista.com</a>&gt;, "Tony Li" &lt;<a =
href=3D"mailto:tony.li@tony.li" class=3D"">tony.li@tony.li</a>&gt;<br =
class=3D""></span></div><br class=3D""><div class=3D""><div class=3D""><br=
 class=3D"">A new version of I-D, draft-li-lsr-isis-area-proxy-01.txt<br =
class=3D"">has been successfully submitted by Tony Li and posted to =
the<br class=3D"">IETF repository.<br class=3D""><br class=3D"">Name:<span=
 class=3D"Apple-tab-span" style=3D"white-space:pre">	</span><span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>draft-li-lsr-isis-area-proxy<br class=3D"">Revision:<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>01<br =
class=3D"">Title:<span class=3D"Apple-tab-span" style=3D"white-space:pre">=
	</span><span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>Area Proxy for IS-IS<br class=3D"">Document date:<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>2019-12-24<br class=3D"">Group:<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span><span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span>Individual Submission<br =
class=3D"">Pages:<span class=3D"Apple-tab-span" style=3D"white-space:pre">=
	</span><span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>17<br class=3D"">URL: =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a =
href=3D"https://www.ietf.org/internet-drafts/draft-li-lsr-isis-area-proxy-=
01.txt" =
class=3D"">https://www.ietf.org/internet-drafts/draft-li-lsr-isis-area-pro=
xy-01.txt</a><br class=3D"">Status: =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a =
href=3D"https://datatracker.ietf.org/doc/draft-li-lsr-isis-area-proxy/" =
class=3D"">https://datatracker.ietf.org/doc/draft-li-lsr-isis-area-proxy/<=
/a><br class=3D"">Htmlized: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a =
href=3D"https://tools.ietf.org/html/draft-li-lsr-isis-area-proxy-01" =
class=3D"">https://tools.ietf.org/html/draft-li-lsr-isis-area-proxy-01</a>=
<br class=3D"">Htmlized: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a =
href=3D"https://datatracker.ietf.org/doc/html/draft-li-lsr-isis-area-proxy=
" =
class=3D"">https://datatracker.ietf.org/doc/html/draft-li-lsr-isis-area-pr=
oxy</a><br class=3D"">Diff: =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a =
href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraft-li-lsr-isis-area-proxy-0=
1" =
class=3D"">https://www.ietf.org/rfcdiff?url2=3Ddraft-li-lsr-isis-area-prox=
y-01</a><br class=3D""><br class=3D"">Abstract:<br class=3D""> =
&nbsp;&nbsp;Link state routing protocols have hierarchical abstraction =
already<br class=3D""> &nbsp;&nbsp;built into them. &nbsp;However, when =
lower levels are used for transit,<br class=3D""> &nbsp;&nbsp;they must =
expose their internal topologies to each other, leading to<br class=3D""> =
&nbsp;&nbsp;scale issues.<br class=3D""><br class=3D""> &nbsp;&nbsp;To =
avoid this, this document discusses extensions to the IS-IS<br class=3D"">=
 &nbsp;&nbsp;routing protocol that would allow level 1 areas to provide =
transit,<br class=3D""> &nbsp;&nbsp;yet only inject an abstraction of =
the level 1 topology into level 2.<br class=3D""> &nbsp;&nbsp;Each level =
1 area is represented as a single level 2 node, thereby<br class=3D""> =
&nbsp;&nbsp;enabling greater scale.<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 =
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""></div></div></blockquote></div><br =
class=3D""></div></body></html>=

--Apple-Mail=_88B1040C-EEC1-4147-898B-556E1392CEED--

