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Subject: [Lsr] I-D Action: draft-ietf-lsr-pce-discovery-security-support-01.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Link State Routing WG of the IETF.

        Title           : IGP extension for PCEP security capability support in the PCE discovery
        Authors         : Diego R. Lopez
                          Qin Wu
                          Dhruv Dhody
                          Michael Wang
                          Daniel King
	Filename        : draft-ietf-lsr-pce-discovery-security-support-01.txt
	Pages           : 10
	Date            : 2019-06-02

Abstract:
   When a Path Computation Element (PCE) is a Label Switching Router
   (LSR) participating in the Interior Gateway Protocol (IGP), or even a
   server participating in IGP, its presence and path computation
   capabilities can be advertised using IGP flooding.  The IGP
   extensions for PCE discovery (RFC 5088 and RFC 5089) define a method
   to advertise path computation capabilities using IGP flooding for
   OSPF and IS-IS respectively.  However these specifications lack a
   method to advertise PCEP security (e.g., Transport Layer
   Security(TLS), TCP Authentication Option (TCP-AO)) support
   capability.

   This document proposes new capability flag bits for PCE-CAP-FLAGS
   sub-TLV that can be announced as attribute in the IGP advertisement
   to distribute PCEP security support information.  In addition, this
   document updates RFC 5088 and RFC 5089 to allow advertisement of Key
   ID or Key Chain Name Sub-TLV to support TCP AO security capability.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-lsr-pce-discovery-security-support/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-lsr-pce-discovery-security-support-01
https://datatracker.ietf.org/doc/html/draft-ietf-lsr-pce-discovery-security-support-01

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-lsr-pce-discovery-security-support-01


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

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


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From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: [Lsr] I-D Action: draft-ietf-lsr-pce-discovery-security-support-01.txt
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Subject: Re: [Lsr] I-D Action: draft-ietf-lsr-pce-discovery-security-support-01.txt
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A few - somewhat tardy - concerns about this draft.

1)During adoption call it was mentioned that PCE WG had not taken a positio=
n on this draft. Since I don't follow PCE WG (apologies) I need to ask - ha=
s that status changed??

2)As discussed during the adoption call, the draft removes the restriction =
specified in RFC 5088/5089 of not allowing further PCE related advertisemen=
ts in Router Capability TLV/Router Information LSA.
Acee had mentioned that he thought this was no longer a concern because in =
RFC 7770 multiple OSPF Router Information LSA support was introduced. But t=
his is really not relevant to the reason that the restriction was originall=
y introduced.

The restriction was introduced because of general concern that using IGPs t=
o advertise information not directly relevant to the operation of the IGP a=
s a routing protocol is sub-optimal and negatively impacts the performance =
of the primary IGP functions.

I am aware that this is a line that has been crossed (in modest ways) more =
than once - and I am not categorically opposing the extensions proposed - b=
ut I do wonder if this is the most appropriate way to advertise the new att=
ributes - particularly since this does not solve the general case - it only=
 applies when the PCE is also an LSR. I think a broader discussion of this =
issue is warranted.

3)If the draft goes forward in its current form, it updates RFC 5088/5089 i=
n a significant way (the removal of restriction against additional PCE rela=
ted IGP advertisements) - in which case I wonder if it would be better to w=
rite an RFC 5088/89 bis document rather than an extension document.

And, BTW, do you know why the HTML version of the document has no table of =
contents?

   Les


> -----Original Message-----
> From: Lsr <lsr-bounces@ietf.org> On Behalf Of internet-drafts@ietf.org
> Sent: Sunday, June 02, 2019 8:45 PM
> To: i-d-announce@ietf.org
> Cc: lsr@ietf.org
> Subject: [Lsr] I-D Action: draft-ietf-lsr-pce-discovery-security-support-=
01.txt
>=20
>=20
> A New Internet-Draft is available from the on-line Internet-Drafts direct=
ories.
> This draft is a work item of the Link State Routing WG of the IETF.
>=20
>         Title           : IGP extension for PCEP security capability supp=
ort in the PCE
> discovery
>         Authors         : Diego R. Lopez
>                           Qin Wu
>                           Dhruv Dhody
>                           Michael Wang
>                           Daniel King
> 	Filename        : draft-ietf-lsr-pce-discovery-security-support-01.txt
> 	Pages           : 10
> 	Date            : 2019-06-02
>=20
> Abstract:
>    When a Path Computation Element (PCE) is a Label Switching Router
>    (LSR) participating in the Interior Gateway Protocol (IGP), or even a
>    server participating in IGP, its presence and path computation
>    capabilities can be advertised using IGP flooding.  The IGP
>    extensions for PCE discovery (RFC 5088 and RFC 5089) define a method
>    to advertise path computation capabilities using IGP flooding for
>    OSPF and IS-IS respectively.  However these specifications lack a
>    method to advertise PCEP security (e.g., Transport Layer
>    Security(TLS), TCP Authentication Option (TCP-AO)) support
>    capability.
>=20
>    This document proposes new capability flag bits for PCE-CAP-FLAGS
>    sub-TLV that can be announced as attribute in the IGP advertisement
>    to distribute PCEP security support information.  In addition, this
>    document updates RFC 5088 and RFC 5089 to allow advertisement of Key
>    ID or Key Chain Name Sub-TLV to support TCP AO security capability.
>=20
>=20
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-lsr-pce-discovery-security-
> support/
>=20
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-lsr-pce-discovery-security-support=
-01
> https://datatracker.ietf.org/doc/html/draft-ietf-lsr-pce-discovery-securi=
ty-
> support-01
>=20
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-lsr-pce-discovery-security=
-
> support-01
>=20
>=20
> Please note that it may take a couple of minutes from the time of submiss=
ion
> until the htmlized version and diff are available at tools.ietf.org.
>=20
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>=20
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr


From nobody Sun Jun  2 23:42:35 2019
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Subject: [Lsr] I-D Action: draft-ietf-lsr-isis-rfc5306bis-02.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Link State Routing WG of the IETF.

        Title           : Restart Signaling for IS-IS
        Authors         : Les Ginsberg
                          Paul Wells
	Filename        : draft-ietf-lsr-isis-rfc5306bis-02.txt
	Pages           : 24
	Date            : 2019-06-02

Abstract:
   This document describes a mechanism for a restarting router to signal
   to its neighbors that it is restarting, allowing them to reestablish
   their adjacencies without cycling through the down state, while still
   correctly initiating database synchronization.

   This document additionally describes a mechansim for a router to
   signal its neighbors that it is preparing to initiate a restart while
   maintaining forwarding plane state.  This allows the neighbors to
   maintain their adjacencies until the router has restarted, but also
   allows the neighbors to bring the adjacencies down in the event of
   other topology changes.

   This document additionally describes a mechanism for a restarting
   router to determine when it has achieved Link State Protocol Data
   Unit (LSP) database synchronization with its neighbors and a
   mechanism to optimize LSP database synchronization, while minimizing
   transient routing disruption when a router starts.

   This document obsoletes RFC 5306.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-lsr-isis-rfc5306bis/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-lsr-isis-rfc5306bis-02
https://datatracker.ietf.org/doc/html/draft-ietf-lsr-isis-rfc5306bis-02

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-lsr-isis-rfc5306bis-02


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

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


From nobody Mon Jun  3 00:03:09 2019
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To: "Acee Lindem (acee)" <acee@cisco.com>, Robert Raszuk <robert@raszuk.net>,  Paul Mattes <pamattes=40microsoft.com@dmarc.ietf.org>, "draft-ietf-lsr-isis-srv6-extensions@ietf.org" <draft-ietf-lsr-isis-srv6-extensions@ietf.org>
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From: Peter Psenak <ppsenak@cisco.com>
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Date: Mon, 3 Jun 2019 09:03:01 +0200
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Subject: Re: [Lsr] draft-ietf-lsr-isis-srv6-extensions-00
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Hi Acee,

I will fix it in the next revision.

thanks,
Peter

On 01/06/2019 01:44, Acee Lindem (acee) wrote:
> Authors,
> 
> Now that this is a WG document, can we fix the draft title?
> 
> Thanks,
> 
> Acee
> 
> *From: *Lsr <lsr-bounces@ietf.org> on behalf of Robert Raszuk 
> <robert@raszuk.net>
> *Date: *Friday, May 31, 2019 at 6:18 PM
> *To: *Paul Mattes <pamattes=40microsoft.com@dmarc.ietf.org>
> *Cc: *"lsr@ietf.org" <lsr@ietf.org>
> *Subject: *Re: [Lsr] draft-ietf-lsr-isis-srv6-extensions-00
> 
> Hi Paul,
> 
> It has been pointed out about month ago :)
> 
> Ref:
> 
> https://mailarchive.ietf.org/arch/msg/lsr/hbmJqgpnfjcsxiD40AGaTMA2tic
> 
> Best,
> 
> R.
> 
> On Fri, May 31, 2019 at 11:41 PM Paul Mattes 
> <pamattes=40microsoft.com@dmarc.ietf.org 
> <mailto:40microsoft.com@dmarc.ietf.org>> wrote:
> 
>     I think there is a small issue with
>     draft-ietf-lsr-isis-srvr-extensions-00. The title is:
> 
>          IS-IS Extensions to Support Routing over IPv6 Dataplane
> 
>     I suspect that IS-IS works just fine for routing IPv6. The title
>     should probably be:
> 
>          IS-IS Extensions to Support Segment Routing over IPv6 Dataplane
> 
>     /pdm/
> 
>     _______________________________________________
>     Lsr mailing list
>     Lsr@ietf.org <mailto:Lsr@ietf.org>
>     https://www.ietf.org/mailman/listinfo/lsr
> 


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To: Qin Wu <bill.wu@huawei.com>, "lsr@ietf.org" <lsr@ietf.org>
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Subject: [Lsr] LSR Dynamic Flooding Interim on May 30th
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From: Uma Chunduri <umac.ietf@gmail.com>
Date: Mon, 3 Jun 2019 18:03:26 -0700
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To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
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On Mon, Jun 3, 2019 at 12:06 AM Les Ginsberg (ginsberg) <ginsberg@cisco.com=
>
wrote:

Uma =E2=80=93
>

>
V2 of the draft has been published addressing your comments.
>

>
Les,

Saw the updates and it addresses more than what I asked for (oh yes, other
than topology change prescription).  Looking good.

Ship it!


--

Uma C.

--0000000000000a3cd2058a750d88
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<div dir=3D"ltr"><div dir=3D"ltr"><br></div><br><blockquote style=3D"margin=
:0 0 0 40px;border:none;padding:0px"><blockquote style=3D"margin:0 0 0 40px=
;border:none;padding:0px"><div class=3D"gmail_quote"><div class=3D"gmail_at=
tr">On Mon, Jun 3, 2019 at 12:06 AM Les Ginsberg (ginsberg) &lt;<a href=3D"=
mailto:ginsberg@cisco.com">ginsberg@cisco.com</a>&gt; wrote:</div></div></b=
lockquote><blockquote style=3D"margin:0 0 0 40px;border:none;padding:0px"><=
div class=3D"gmail_quote"><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 lang=3D"EN-US"><div class=3D"gmail-m_3916044160700852782WordSection1"=
><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibri,s=
ans-serif;color:rgb(31,73,125)">Uma =E2=80=93</span></p></div></div></block=
quote></div></blockquote><blockquote style=3D"margin:0 0 0 40px;border:none=
;padding:0px"><div class=3D"gmail_quote"><blockquote class=3D"gmail_quote" =
style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pa=
dding-left:1ex"><div lang=3D"EN-US"><div class=3D"gmail-m_39160441607008527=
82WordSection1"><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-f=
amily:Calibri,sans-serif;color:rgb(31,73,125)">=C2=A0</span></p></div></div=
></blockquote></div></blockquote><blockquote style=3D"margin:0 0 0 40px;bor=
der:none;padding:0px"><div class=3D"gmail_quote"><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 lang=3D"EN-US"><div class=3D"gmail-m_391604416=
0700852782WordSection1"><p class=3D"MsoNormal"><span style=3D"font-size:11p=
t;font-family:Calibri,sans-serif;color:rgb(31,73,125)">V2 of the draft has =
been published addressing your comments.</span></p></div></div></blockquote=
></div></blockquote><blockquote style=3D"margin:0 0 0 40px;border:none;padd=
ing:0px"><div class=3D"gmail_quote"><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 lang=3D"EN-US"><div class=3D"gmail-m_3916044160700852782Wor=
dSection1"><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family=
:Calibri,sans-serif;color:rgb(31,73,125)">=C2=A0</span></p></div></div></bl=
ockquote></div></blockquote></blockquote><blockquote style=3D"margin:0 0 0 =
40px;border:none;padding:0px">Les, <br><br>Saw the updates and it addresses=
 more than what I asked for (oh yes, other than topology change prescriptio=
n).=C2=A0 Looking good.<br><br><div class=3D"gmail_quote"><div>Ship it!<br>=
</div></div></blockquote><blockquote style=3D"margin:0 0 0 40px;border:none=
;padding:0px"><br><div class=3D"gmail_quote">--</div></blockquote><blockquo=
te style=3D"margin:0 0 0 40px;border:none;padding:0px"><div class=3D"gmail_=
quote">Uma C.</div></blockquote><div class=3D"gmail_quote"><blockquote clas=
s=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid r=
gb(204,204,204);padding-left:1ex"><div lang=3D"EN-US"><div class=3D"gmail-m=
_3916044160700852782WordSection1"><div style=3D"border-top:none;border-righ=
t:none;border-bottom:none;border-left:1.5pt solid blue;padding:0in 0in 0in =
4pt"><div><div><div>
</div>
</div>
</div>
</div>
</div>
</div>

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

--0000000000000a3cd2058a750d88--


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From: Qin Wu <bill.wu@huawei.com>
To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: [Lsr] I-D Action: draft-ietf-lsr-pce-discovery-security-support-01.txt
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Date: Tue, 4 Jun 2019 04:09:12 +0000
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Subject: Re: [Lsr] I-D Action: draft-ietf-lsr-pce-discovery-security-support-01.txt
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From nobody Mon Jun  3 21:18:18 2019
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From: Qin Wu <bill.wu@huawei.com>
To: "pce@ietf.org" <pce@ietf.org>, "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: Solicit feeback on draft-ietf-lsr-pce-discovery-security-support-01
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Hi, Folks:
Draft-ietf-lsr-pce-discovery-security-support was adopted by LSR WG in Dece=
mber 2018 due to security importance for routing protocol.
Julien shared his comments and also help look for comments and feedback fro=
m PCE WG on this draft during poll adoption call in LSR WG.
Recently we made a quick update to draft-ietf-lsr-pce-discovery-security-su=
pport without technical content changes.
We would like to solicit comments and feedback again on this draft. Thanks =
in advance!

-Qin
> -----Original Message-----
> From: Lsr <lsr-bounces@ietf.org> On Behalf Of internet-drafts@ietf.org
> Sent: Sunday, June 02, 2019 8:45 PM
> To: i-d-announce@ietf.org
> Cc: lsr@ietf.org
> Subject: [Lsr] I-D Action:=20
> draft-ietf-lsr-pce-discovery-security-support-01.txt
>=20
>=20
> A New Internet-Draft is available from the on-line Internet-Drafts direct=
ories.
> This draft is a work item of the Link State Routing WG of the IETF.
>=20
>         Title           : IGP extension for PCEP security capability supp=
ort in the PCE
> discovery
>         Authors         : Diego R. Lopez
>                           Qin Wu
>                           Dhruv Dhody
>                           Michael Wang
>                           Daniel King
> 	Filename        : draft-ietf-lsr-pce-discovery-security-support-01.txt
> 	Pages           : 10
> 	Date            : 2019-06-02
>=20
> Abstract:
>    When a Path Computation Element (PCE) is a Label Switching Router
>    (LSR) participating in the Interior Gateway Protocol (IGP), or even a
>    server participating in IGP, its presence and path computation
>    capabilities can be advertised using IGP flooding.  The IGP
>    extensions for PCE discovery (RFC 5088 and RFC 5089) define a method
>    to advertise path computation capabilities using IGP flooding for
>    OSPF and IS-IS respectively.  However these specifications lack a
>    method to advertise PCEP security (e.g., Transport Layer
>    Security(TLS), TCP Authentication Option (TCP-AO)) support
>    capability.
>=20
>    This document proposes new capability flag bits for PCE-CAP-FLAGS
>    sub-TLV that can be announced as attribute in the IGP advertisement
>    to distribute PCEP security support information.  In addition, this
>    document updates RFC 5088 and RFC 5089 to allow advertisement of Key
>    ID or Key Chain Name Sub-TLV to support TCP AO security capability.
>=20
>=20
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-lsr-pce-discovery-security
> -
> support/
>=20
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-lsr-pce-discovery-security-supp
> ort-01
> https://datatracker.ietf.org/doc/html/draft-ietf-lsr-pce-discovery-sec
> urity-
> support-01
>=20
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-lsr-pce-discovery-securit
> y-
> support-01
>=20
>=20
> Please note that it may take a couple of minutes from the time of=20
> submission until the htmlized version and diff are available at tools.iet=
f.org.
>=20
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>=20
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr

_______________________________________________
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--000000000000957309058a863e6e
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Dear authors:

Thank you for the work on this document!!

I just (finally!) finished reading this model.  I have several comments
in-line below, including some that I consider major -- I would like those
to be addressed before moving the document forward.

Thanks!

Alvaro.


[Line numbers come from id-nits.]

...
88 1.  Introduction

90   This document defines a YANG ([RFC7950]) data model for IS-IS routing
91   protocol.

[nit] s/([RFC7950])/[RFC7950]


...
103 2.  Design of the Data Model

105   The IS-IS YANG module augments the "control-plane-protocol" list in
106   ietf-routing module (defined in [RFC8349]) with specific IS-IS
107   parameters.

[nit] s/(defined in [RFC8349])/[RFC8349]


...
417 2.2.  Multi-topology Parameters
...
427   Some specific parameters could be defined on a per topology basis
428   both at global level and at interface level: for example, an
429   interface metric can be defined per topology.

[nit] s/specific parameters could be defined/specific parameters can be
defined


...
436 2.3.  Per-Level Parameters
...
442   o  a top-level container: corresponds to level-1-2, so the
443      configuration applies to both levels.

445   o  a level-1 container: corresponds to level-1 specific parameters.

447   o  a level-2 container: corresponds to level-2 specific parameters.
...
468   An implementation SHOULD prefer a level specific parameter over a
469   level-all parameter.  As example, if the priority is 100 for the
470   level-1, 200 for the level-2 and 250 for the top-level configuration,
471   the implementation should use 100 for the level-1 and 200 for the
472   level-2.

[nit] In the description above, maybe use top-level, or even level-1-2,
instead of level-all.  That term is used later in the text, but it would be
clearer to understand that background here.

[major] "An implementation SHOULD prefer a level specific parameter over a
level-all parameter."  When would the level-specific parameter not be
preferred?  IOW, why is that not a MUST?

474   Some parameters like "overload bit" and "route preference" are not
475   modeled to support a per level configuration.  If an implementation
476   supports per level configuration for such parameter, this
477   implementation SHOULD augment the current model by adding both
478   level-1 and level-2 containers and SHOULD reuse existing
479   configuration groupings.

[major] "...SHOULD augment the current model by adding both level-1 and
level-2 containers"  What other way would that be done?  I think that
Normative language is not needed in this case.


...
506   If an implementation does not support per level configuration for a
507   parameter modeled with per level configuration, the implementation
508   SHOULD advertise a deviation to announce the non-support of the
509   level-1 and level-2 containers.

511   Finally, if an implementation supports per level configuration but
512   does not support the level-1-2 configuration, it SHOULD also
513   advertise a deviation.

[major] "SHOULD advertise a deviation"  According to rfc7950: "Deviations
MUST never be part of a published standard"; I realize that this document
doesn't include one, but it Normatively recommends their use.
 s/SHOULD/should


515 2.4.  Per-Interface Parameters
...
523   Each interface has some interface-specific parameters that may have a
524   different per level value as described in previous section.  An
525   interface-specific parameter always overrides an IS-IS global
526   parameter.

[major] In =C2=A72.3 (Per-Level Parameters) the preference of level-specifi=
c
parameters is Normatively mandated.  Why isn't that done here?  For
clarity, I think it should.


528   Some parameters like hello-padding are defined as containers to allow
529   easy extension by vendor specific modules.

531          +--rw interfaces
532             +--rw interface* [name]
533                +--rw name                       if:interface-ref
534                +--rw level-type?                level
535                +--rw lsp-pacing-interval?
536                |       rt-types:timer-value-milliseconds
537                +--rw lsp-retransmit-interval?
538                |       rt-types:timer-value-seconds16
539                +--rw passive?                   boolean
540                +--rw csnp-interval?
541                |       rt-types:timer-value-seconds16
542                +--rw hello-padding
543                |  +--rw enable?   boolean
544                +--rw mesh-group-enable?       mesh-group-state
545                +--rw mesh-group?              uint8
546                +--rw interface-type?          interface-type
547                +--rw enable?                  boolean {admin-control}?

[nit] It might be clearer if the "enable" (admin-control) statement is
placed closer to the top of this branch...so that it's clear that it is
controlling the interface state.


548                +--rw tag*                     uint32 {prefix-tag}?
549                +--rw tag64*                   uint64 {prefix-tag64}?
550                +--rw node-flag?               boolean {node-flag}?
551                +--rw hello-authentication
552                |  +--rw (authentication-type)?
553                |  |  +--:(key-chain) {key-chain}?
554                |  |  |  +--rw key-chain?
555                |  |  |          key-chain:key-chain-ref
556                |  |  +--:(password)
557                |  |     +--rw key?                string
558                |  |     +--rw crypto-algorithm?   identityref
559                |  +--rw level-1
560                |  |  +--rw (authentication-type)?
561                |  |     +--:(key-chain) {key-chain}?
562                |  |     |  +--rw key-chain?
563                |  |     |        key-chain:key-chain-ref
564                |  |     +--:(password)
565                |  |        +--rw key?                string
566                |  |        +--rw crypto-algorithm?   identityref
567                |  +--rw level-2
568                |     +--rw (authentication-type)?
569                |        +--:(key-chain) {key-chain}?
570                |        |  +--rw key-chain?
571                |        |          key-chain:key-chain-ref
572                |        +--:(password)
573                |           +--rw key?                string
574                |           +--rw crypto-algorithm?   identityref
575                +--rw hello-interval
576                |  +--rw value?     rt-types:timer-value-seconds16
577                |  +--rw level-1
578                |  |  +--rw value?   rt-types:timer-value-seconds16
579                |  +--rw level-2
580                |     +--rw value?   rt-types:timer-value-seconds16

[minor] Some implementations support having a sub-second
hello-interval...but with a timer in seconds that can't be done.


...
860 2.5.  Authentication Parameters

862   The module enables authentication configuration through the IETF key-
863   chain module ([RFC8177]).  The IS-IS module imports the "ietf-key-
864   chain" module and reuses some groupings to allow global and per
865   interface configuration of authentication.  If a global
866   authentication is configured, an implementation SHOULD authenticate
867   PSNPs (Partial Sequence Number Packets), CSNPs (Complete Sequence
868   Number Packets) and LSPs (Link State Packets) with the authentication
869   parameters supplied.  The authentication of HELLO PDUs (Protocol Data
870   Units) can be activated on a per interface basis.

[nit] s/([RFC8177])/[RFC8177]


...
894 2.8.  IP FRR

896   This YANG module supports LFA (Loop Free Alternates) ([RFC5286]) and
897   remote LFA ([RFC7490]) as IP FRR techniques.  The "fast-reroute"
898   container may be augmented by other models to support other IPFRR
899   flavors (MRT, TILFA ...).

[nit] s/([RFC5286])...([RFC7490])/[RFC5286]...[RFC7490]

[minor] "IPFRR" is used above and in other places, but "IP-FRR" is used in
several places as well.  Please be consistent.


...
909   The "candidate-disabled" allows to mark an interface to not be used
910   as a backup.

[major] "candidate-disabled" doesn't exist...but "candidate-enable" does...


...
951 4.  Notifications
...
957      lsp-too-large: raised when the system tries to propagate a too
958      large PDU.

[nit] s/a too large PDU/a PDU that is too large


...
978      sequence-number-skipped: This notification is sent when the system
979      receives a PDU with its own system ID and different contents.  The
980      system has to reissue the LSP with a higher sequence number.

[nit] That's the last thing I would have guessed that this action would
have been called...  Maybe it's just me...


982      authentication-type-failure: This notification is sent when the
983      system receives a PDU with the wrong authentication type field.

985      authentication-failure: This notification is sent when the system
986      receives a PDU with the wrong authentication information.

[minor] Why do we need both of these?  Given that they both provide the
same information (including the raw PDU), and that
authentication-type-failure is a specific case of receiving "a PDU with the
wrong authentication information".


...
1039 6.  IS-IS YANG Module
...
1107       Editor:    Stephane Litkowski
1108             <mailto:stephane.litkowski@orange.com>

1110           Derek Yeung
1111             <mailto:derek@arrcus.com>
1112           Acee Lindem
1113             <mailto:acee@cisco.com>
1114           Jeffrey Zhang
1115             <mailto:zzhang@juniper.net>
1116           Ladislav Lhotka
1117             <mailto:llhotka@nic.cz>
1118           Yi Yang
1119             <mailto:yiya@cisco.com>
1120           Dean Bogdanovic
1121             <mailto:deanb@juniper.net>
1122           Kiran Agrahara Sreenivasa
1123             <mailto:kkoushik@brocade.com>
1124           Yingzhen Qu
1125             <mailto:yiqu@cisco.com>
1126           Jeff Tantsura
1127             <mailto:jefftant.ietf@gmail.com>

[major] The list above is out of date, and it doesn't match the author list
on the first page of this document.


...
1239     feature nsr {
1240       description
1241         "Non-Stop-Routing (NSR) support.";
1242     }

[minor] Reference?


...
1255     feature overload-max-metric {
1256       description
1257         "Support of overload by setting
1258          all links to max metric.";
1259     }

[minor] Reference?


...
1880           enum l1-up-internal {
1881             description "Level 1 internal route
1882                          and not leaked to a lower level";
1883           }

[minor] "Level 1 internal route and not leaked to a lower level"  When
would an L1 route ever be leaked to a lower level??  The same comment
applies below.

1884           enum l2-up-external {
1885             description "Level 2 external route
1886                          and not leaked to a lower level";
1887           }
1888           enum l1-up-external {
1889             description "Level 1 external route
1890                          and not leaked to a lower level";
1891           }
1892           enum l2-down-internal {
1893             description "Level 2 internal route
1894                          and leaked to a lower level";
1895           }
1896           enum l1-down-internal {
1897             description "Level 1 internal route
1898                          and leaked to a lower level";
1899           }
1900           enum l2-down-external {
1901             description "Level 2 external route
1902                          and leaked to a lower level";
1903           }
1904           enum l1-down-external {
1905             description "Level 1 external route
1906                          and leaked to a lower level";
1907           }

[minor] What level is lower than L1?  The same comment applies to the
l1-down-internal description.


...
2233     grouping hello-authentication-cfg {
2234       choice authentication-type {
2235         case key-chain {
2236           if-feature key-chain;
2237           leaf key-chain {
2238             type key-chain:key-chain-ref;
2239             description "Reference to a key-chain.";
2240           }
2241         }
2242         case password {
2243           leaf key {
2244             type string;
2245             description "Authentication key specification - The
2246                          length of the key may be dependent on the
2247                          cryptographic algorithm. In cases where
2248                          it is not, a key length of at least 32 octets
2249                          should be supported to allow for
2250                          interoperability with strong keys.";
2251           }

[major] I'm hoping that the "Authentication key specification" is specified
somewhere else so that a reference can be included here -- specially the
part about the "key length of at least 32 octets should be supported to
allow for interoperability with strong keys".


...
2510             if-feature max-ecmp;
2511             type uint16 {
2512               range "1..32";
2513             }
2514             description
2515               "Maximum number of Equal-Cost Multi-Path (ECMP) paths.";
2516           }

[nit] Why just 32?  Is that an architectural limit somehow?  It seems like
a good opportunity to extend the number now and avoid future need to
change...


2517           container ietf-spf-delay {
2518             if-feature ietf-spf-delay;
2519             uses ietf-spf-delay;
2520             description "IETF SPF delay algorithm configuration.";
2521           }

[minor] Reference?


...
2654       container hello-padding {
2655         leaf enable {
2656           type boolean;
2657           default "true";

[minor] I just noticed that in some cases (like here) quotes are used for
the default ("true"), but in other cases no quotes are used.  I'm not
completely sure about the YANG syntax for booleans (rfc7950 wasn't clear to
me), but I think that at least the document should be consistent.


...
3022     grouping packet-counters {
...
3100           container unknown {
3101             leaf in {
3102               type uint32;
3103               description "Received unknown PDUs.";
3104             }
3105             leaf out {
3106               type uint32;
3107               description "Sent unknown PDUs.";
3108             }

[major] How can an implementation send unknown (to it!) PDUs??


...
3995     grouping tlv242-router-capabilities {
3996       container router-capabilities {
3997         list router-capability {
3998             leaf flags {
3999               type bits {
4000                 bit flooding {
4001                   position 0;
4002                   description
4003                     "If the S bit is set, the IS-IS Router CAPABILITY
4004                      TLV MUST be flooded across the entire routing
4005                      domain. If the S bit is clear, the TLV MUST NOT
4006                      be leaked between levels. This bit MUST NOT
4007                       be altered during the TLV leaking.";
4008                 }

[major] This is a description of the behavior (copied from rfc7981!), not a
description of the field.

4009                 bit down {
4010                   position 1;
4011                   description
4012                     "When the IS-IS Router CAPABILITY TLV is leaked
4013                      from level-2 to level-1, the D bit MUST be set.
4014                      Otherwise, this bit MUST be clear.  IS-IS Router
4015                      capability TLVs with the D bit set MUST NOT be
4016                      leaked from level-1 to level-2 in to prevent
4017                      TLV looping.";
4018                 }

[major] Same comment as above...


...
4036             leaf binary {
4037               type binary;
4038               description
4039                 "Binary encoding of the IS-IS node capabilities";
4040             }

[major] I may be missing this completely...  How are the capabilities
encoded?  Does this information come from the sub-TLVs in TLV 242?
Somewhere else?


...
4540     notification lsp-too-large {
4541       uses notification-instance-hdr;
4542       uses notification-interface-hdr;

4544       leaf pdu-size {
4545         type uint32;
4546         description "Size of the LSP PDU";
4547       }
4548       leaf lsp-id {
4549         type lsp-id;
4550         description "LSP ID";

4552       }
4553       description
4554         "This notification is sent when we attempt to propagate
4555          an LSP that is larger than the dataLinkBlockSize for the
4556          circuit.  The notification generation must be throttled
4557          with at least 5 seconds between successive
4558          notifications.";
4559     }

[minor] A reference to dataLinkBlockSize would be very nice.

[minor] This notification is specific to a circuit.  Why aren't the
interface and its MTU included in it?

[major] "must be throttled"  Why is this text not Normative?  It seems to
me that throttling is a good practice...in fact, it may be a good idea to
specify it for all notifications.  There are 12 total instances of the same
text.


...
4845     notification lsp-received {
...
4865       }
4866       description
4867         "This notification is sent when an LSP is received.
4868          The notification generation must be throttled with at
4869          least 5 seconds between successive notifications.";
4870      }

[minor] In the case of lsp-received, 5 seconds is a very long
time...specially since there's the potential to receive many LSPs within a
short period of time.  I'm not advocating against throttling, but I am
curious how an event with multiple LSPs in a short time (<< 5 sec) would be
handled.


...
4897 7.  Security Considerations
...
4941   Some of the RPC operations in this YANG module may be considered
4942   sensitive or vulnerable in some network environments.  It is thus
4943   important to control access to these operations.  The OSPF YANG
4944   module support the "clear-adjacency" and "clear-database" RPCs.  If
4945   access to either of these is compromised, they can result in
4946   temporary network outages be employed to mount DoS attacks.

[minor] s/OSPF/IS-IS ;-)


...
4954 9.  IANA Considerations

4956   The IANA is requested to assign two new URIs from the IETF XML
4957   registry ([RFC3688]).  Authors are suggesting the following URI:

[nit] s/([RFC3688])/[RFC3688]


...
4963   This document also requests one new YANG module name in the YANG
4964   Module Names registry ([RFC6020]) with the following suggestion:

[nit] s/([RFC6020])/[RFC6020]


...
4973 10.1.  Normative References
...
5083   [RFC7810]  Previdi, S., Ed., Giacalone, S., Ward, D., Drake, J., and
5084              Q. Wu, "IS-IS Traffic Engineering (TE) Metric Extensions"=
,
5085              RFC 7810, DOI 10.17487/RFC7810, May 2016,
5086              <https://www.rfc-editor.org/info/rfc7810>.

[major] This RFC has been Obsoleted by rfc8570.  Please update the
reference.


...
5144 10.2.  Informative References

5146   [RFC5443]  Jork, M., Atlas, A., and L. Fang, "LDP IGP
5147              Synchronization", RFC 5443, DOI 10.17487/RFC5443, March
5148              2009, <https://www.rfc-editor.org/info/rfc5443>.

[major] As all the other references to IS-IS functionality, this should
also be Normative.  Note that this reference is already in the Downref
registry; IOW, there are no issues with it being an Informational RFC.

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<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div style=3D"margin:0px"><div =
style=3D"margin:0px">Dear authors:</div><div style=3D"margin:0px"><br></div=
><div style=3D"margin:0px">Thank you for the work on this document!!</div><=
div style=3D"margin:0px"><br></div><div style=3D"margin:0px">I just (finall=
y!) finished reading this model.=C2=A0 I have several comments in-line belo=
w, including some that I consider major -- I would like those to be address=
ed before moving the document forward.</div><div style=3D"margin:0px"><br><=
/div><div style=3D"margin:0px">Thanks!</div><div style=3D"margin:0px"><br><=
/div><div style=3D"margin:0px">Alvaro.</div><div style=3D"margin:0px"><br><=
/div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[Line nu=
mbers come from id-nits.]</div><div style=3D"margin:0px"><br></div><div sty=
le=3D"margin:0px">...</div><div style=3D"margin:0px">88<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span>1.=C2=A0 Introduction</div><di=
v style=3D"margin:0px"><br></div><div style=3D"margin:0px">90<span class=3D=
"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 This document de=
fines a YANG ([RFC7950]) data model for IS-IS routing</div><div style=3D"ma=
rgin:0px">91<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n> =C2=A0 protocol.</div><div style=3D"margin:0px"><br></div><div style=3D"=
margin:0px">[nit] s/([RFC7950])/[RFC7950]</div><div style=3D"margin:0px"><b=
r></div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">...</=
div><div style=3D"margin:0px">103<span class=3D"Apple-tab-span" style=3D"wh=
ite-space:pre">	</span>2.=C2=A0 Design of the Data Model</div><div style=3D=
"margin:0px"><br></div><div style=3D"margin:0px">105<span class=3D"Apple-ta=
b-span" style=3D"white-space:pre">	</span> =C2=A0 The IS-IS YANG module aug=
ments the &quot;control-plane-protocol&quot; list in</div><div style=3D"mar=
gin:0px">106<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n> =C2=A0 ietf-routing module (defined in [RFC8349]) with specific IS-IS</d=
iv><div style=3D"margin:0px">107<span class=3D"Apple-tab-span" style=3D"whi=
te-space:pre">	</span> =C2=A0 parameters.</div><div style=3D"margin:0px"><b=
r></div><div style=3D"margin:0px">[nit] s/(defined in [RFC8349])/[RFC8349]<=
/div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></di=
v><div style=3D"margin:0px">...</div><div style=3D"margin:0px">417<span cla=
ss=3D"Apple-tab-span" style=3D"white-space:pre">	</span>2.2.=C2=A0 Multi-to=
pology Parameters</div><div style=3D"margin:0px">...</div><div style=3D"mar=
gin:0px">427<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n> =C2=A0 Some specific parameters could be defined on a per topology basis=
</div><div style=3D"margin:0px">428<span class=3D"Apple-tab-span" style=3D"=
white-space:pre">	</span> =C2=A0 both at global level and at interface leve=
l: for example, an</div><div style=3D"margin:0px">429<span class=3D"Apple-t=
ab-span" style=3D"white-space:pre">	</span> =C2=A0 interface metric can be =
defined per topology.</div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px">[nit] s/specific parameters could be defined/specific param=
eters can be defined</div><div style=3D"margin:0px"><br></div><div style=3D=
"margin:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"mar=
gin:0px">436<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n>2.3.=C2=A0 Per-Level Parameters</div><div style=3D"margin:0px">...</div><=
div style=3D"margin:0px">442<span class=3D"Apple-tab-span" style=3D"white-s=
pace:pre">	</span> =C2=A0 o =C2=A0a top-level container: corresponds to lev=
el-1-2, so the</div><div style=3D"margin:0px">443<span class=3D"Apple-tab-s=
pan" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0configuration a=
pplies to both levels.</div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px">445<span class=3D"Apple-tab-span" style=3D"white-space:pre"=
>	</span> =C2=A0 o =C2=A0a level-1 container: corresponds to level-1 specif=
ic parameters.</div><div style=3D"margin:0px"><br></div><div style=3D"margi=
n:0px">447<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>=
 =C2=A0 o =C2=A0a level-2 container: corresponds to level-2 specific parame=
ters.</div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">468=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 An=
 implementation SHOULD prefer a level specific parameter over a</div><div s=
tyle=3D"margin:0px">469<span class=3D"Apple-tab-span" style=3D"white-space:=
pre">	</span> =C2=A0 level-all parameter.=C2=A0 As example, if the priority=
 is 100 for the</div><div style=3D"margin:0px">470<span class=3D"Apple-tab-=
span" style=3D"white-space:pre">	</span> =C2=A0 level-1, 200 for the level-=
2 and 250 for the top-level configuration,</div><div style=3D"margin:0px">4=
71<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
the implementation should use 100 for the level-1 and 200 for the</div><div=
 style=3D"margin:0px">472<span class=3D"Apple-tab-span" style=3D"white-spac=
e:pre">	</span> =C2=A0 level-2.</div><div style=3D"margin:0px"><br></div><d=
iv style=3D"margin:0px">[nit] In the description above, maybe use top-level=
, or even level-1-2, instead of level-all.=C2=A0 That term is used later in=
 the text, but it would be clearer to understand that background here.</div=
><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[major] &quo=
t;An implementation SHOULD prefer a level specific parameter over a level-a=
ll parameter.&quot; =C2=A0When would the level-specific parameter not be pr=
eferred?=C2=A0 IOW, why is that not a MUST?</div><div style=3D"margin:0px">=
<br></div><div style=3D"margin:0px">474<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 Some parameters like &quot;overload bi=
t&quot; and &quot;route preference&quot; are not</div><div style=3D"margin:=
0px">475<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 modeled to support a per level configuration.=C2=A0 If an implementa=
tion</div><div style=3D"margin:0px">476<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 supports per level configuration for s=
uch parameter, this</div><div style=3D"margin:0px">477<span class=3D"Apple-=
tab-span" style=3D"white-space:pre">	</span> =C2=A0 implementation SHOULD a=
ugment the current model by adding both</div><div style=3D"margin:0px">478<=
span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 lev=
el-1 and level-2 containers and SHOULD reuse existing</div><div style=3D"ma=
rgin:0px">479<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</sp=
an> =C2=A0 configuration groupings.</div><div style=3D"margin:0px"><br></di=
v><div style=3D"margin:0px">[major] &quot;...SHOULD augment the current mod=
el by adding both level-1 and level-2 containers&quot; =C2=A0What other way=
 would that be done?=C2=A0 I think that Normative language is not needed in=
 this case.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0=
px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">=
506<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0=
 If an implementation does not support per level configuration for a</div><=
div style=3D"margin:0px">507<span class=3D"Apple-tab-span" style=3D"white-s=
pace:pre">	</span> =C2=A0 parameter modeled with per level configuration, t=
he implementation</div><div style=3D"margin:0px">508<span class=3D"Apple-ta=
b-span" style=3D"white-space:pre">	</span> =C2=A0 SHOULD advertise a deviat=
ion to announce the non-support of the</div><div style=3D"margin:0px">509<s=
pan class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 leve=
l-1 and level-2 containers.</div><div style=3D"margin:0px"><br></div><div s=
tyle=3D"margin:0px">511<span class=3D"Apple-tab-span" style=3D"white-space:=
pre">	</span> =C2=A0 Finally, if an implementation supports per level confi=
guration but</div><div style=3D"margin:0px">512<span class=3D"Apple-tab-spa=
n" style=3D"white-space:pre">	</span> =C2=A0 does not support the level-1-2=
 configuration, it SHOULD also</div><div style=3D"margin:0px">513<span clas=
s=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 advertise a =
deviation.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0p=
x">[major] &quot;SHOULD advertise a deviation&quot; =C2=A0According to rfc7=
950: &quot;Deviations MUST never be part of a published standard&quot;; I r=
ealize that this document doesn&#39;t include one, but it Normatively recom=
mends their use. =C2=A0s/SHOULD/should</div><div style=3D"margin:0px"><br><=
/div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">515<span=
 class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>2.4.=C2=A0 Per-=
Interface Parameters</div><div style=3D"margin:0px">...</div><div style=3D"=
margin:0px">523<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</=
span> =C2=A0 Each interface has some interface-specific parameters that may=
 have a</div><div style=3D"margin:0px">524<span class=3D"Apple-tab-span" st=
yle=3D"white-space:pre">	</span> =C2=A0 different per level value as descri=
bed in previous section.=C2=A0 An</div><div style=3D"margin:0px">525<span c=
lass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 interface=
-specific parameter always overrides an IS-IS global</div><div style=3D"mar=
gin:0px">526<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n> =C2=A0 parameter.</div><div style=3D"margin:0px"><br></div><div style=3D=
"margin:0px">[major] In =C2=A72.3 (Per-Level Parameters) the preference of =
level-specific parameters is Normatively mandated.=C2=A0 Why isn&#39;t that=
 done here?=C2=A0 For clarity, I think it should.</div><div style=3D"margin=
:0px"><br></div><div style=3D"margin:0px"><br></div><div style=3D"margin:0p=
x">528<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 Some parameters like hello-padding are defined as containers to allow</=
div><div style=3D"margin:0px">529<span class=3D"Apple-tab-span" style=3D"wh=
ite-space:pre">	</span> =C2=A0 easy extension by vendor specific modules.</=
div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">531<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0+--rw interfaces</div><div style=3D"margin:0px">532<spa=
n class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +--rw interface* [name]</div><div style=3D"mar=
gin:0px">533<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw name =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 if:i=
nterface-ref</div><div style=3D"margin:0px">534<span class=3D"Apple-tab-spa=
n" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0+--rw level-type? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0level</div><div style=3D"margin:0px">535<span class=3D"=
Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw lsp-pacing-interval?</div><div style=
=3D"margin:0px">536<span class=3D"Apple-tab-span" style=3D"white-space:pre"=
>	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =
=C2=A0 =C2=A0 rt-types:timer-value-milliseconds</div><div style=3D"margin:0=
px">537<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw lsp-retransmit=
-interval?</div><div style=3D"margin:0px">538<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 rt-types:timer-value-seconds16</div=
><div style=3D"margin:0px">539<span class=3D"Apple-tab-span" style=3D"white=
-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0+--rw passive? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 boolean</div><div style=3D"margin:0px">540<span class=3D"Apple-tab-s=
pan" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0+--rw csnp-interval?</div><div style=3D"margin:0px">541=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 rt-t=
ypes:timer-value-seconds16</div><div style=3D"margin:0px">542<span class=3D=
"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw hello-padding</div><div style=3D"ma=
rgin:0px">543<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</sp=
an> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0+--rw en=
able? =C2=A0 boolean</div><div style=3D"margin:0px">544<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw mesh-group-enable? =C2=A0 =C2=A0 =C2=A0 me=
sh-group-state</div><div style=3D"margin:0px">545<span class=3D"Apple-tab-s=
pan" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0+--rw mesh-group? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0uint8</div><div style=3D"margin:0px">546<span class=3D"Apple-t=
ab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0+--rw interface-type? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0interface-type</div><div style=3D"margin:0px">547<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw enable? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0boolean {admin-control}?</div><div style=3D"mar=
gin:0px"><br></div><div style=3D"margin:0px">[nit] It might be clearer if t=
he &quot;enable&quot; (admin-control) statement is placed closer to the top=
 of this branch...so that it&#39;s clear that it is controlling the interfa=
ce state.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px=
"><br></div><div style=3D"margin:0px">548<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0+--rw tag* =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 uint32 {prefix-tag}?</div><div style=3D"margin:0px">54=
9<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw tag64* =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 uint64 {prefix-tag64}?</di=
v><div style=3D"margin:0px">550<span class=3D"Apple-tab-span" style=3D"whit=
e-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0+--rw node-flag? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 boolea=
n {node-flag}?</div><div style=3D"margin:0px">551<span class=3D"Apple-tab-s=
pan" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0+--rw hello-authentication</div><div style=3D"margin:0p=
x">552<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0+--rw (authenti=
cation-type)?</div><div style=3D"margin:0px">553<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0| =C2=A0| =C2=A0+--:(key-chain) {key-chain}?</div><div =
style=3D"margin:0px">554<span class=3D"Apple-tab-span" style=3D"white-space=
:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=
=A0| =C2=A0| =C2=A0+--rw key-chain?</div><div style=3D"margin:0px">555<span=
 class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0| =C2=A0| =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0key-chain:key-chain-ref</div><div style=3D"margin:0px">=
556<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0| =C2=A0+--:(passw=
ord)</div><div style=3D"margin:0px">557<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0| =C2=A0| =C2=A0 =C2=A0 +--rw key? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0string</div><div style=3D"margin:0px">558<span c=
lass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0| =C2=A0 =C2=A0 +--rw cryp=
to-algorithm? =C2=A0 identityref</div><div style=3D"margin:0px">559<span cl=
ass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0+--rw level-1</div><div style=
=3D"margin:0px">560<span class=3D"Apple-tab-span" style=3D"white-space:pre"=
>	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0| =
=C2=A0+--rw (authentication-type)?</div><div style=3D"margin:0px">561<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0| =C2=A0 =C2=A0 +--:(key-c=
hain) {key-chain}?</div><div style=3D"margin:0px">562<span class=3D"Apple-t=
ab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0| =C2=A0 =C2=A0 | =C2=A0+--rw key-chain?</d=
iv><div style=3D"margin:0px">563<span class=3D"Apple-tab-span" style=3D"whi=
te-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0| =C2=A0| =C2=A0 =C2=A0 | =C2=A0 =C2=A0 =C2=A0 =C2=A0key-chain:key-chain=
-ref</div><div style=3D"margin:0px">564<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0| =C2=A0| =C2=A0 =C2=A0 +--:(password)</div><div style=3D"margin:=
0px">565<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0| =C2=A0 =C2=
=A0 =C2=A0 =C2=A0+--rw key? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0string</div><div style=3D"margin:0px">566<span class=3D"Apple-tab=
-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw crypto-a=
lgorithm? =C2=A0 identityref</div><div style=3D"margin:0px">567<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0+--rw level-2</div><div style=3D=
"margin:0px">568<span class=3D"Apple-tab-span" style=3D"white-space:pre">	<=
/span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=
=A0 +--rw (authentication-type)?</div><div style=3D"margin:0px">569<span cl=
ass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0+--:(key=
-chain) {key-chain}?</div><div style=3D"margin:0px">570<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0+--rw key-c=
hain?</div><div style=3D"margin:0px">571<span class=3D"Apple-tab-span" styl=
e=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0key-chain:key-chain-ref</div><div style=3D"margin:0px">572<span class=3D=
"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0+--:(passwor=
d)</div><div style=3D"margin:0px">573<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +--rw key? =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0string</div><div style=3D"margin:0px"=
>574<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 +--rw crypto-algorithm? =C2=A0 identityref</div><div style=3D=
"margin:0px">575<span class=3D"Apple-tab-span" style=3D"white-space:pre">	<=
/span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw hello-i=
nterval</div><div style=3D"margin:0px">576<span class=3D"Apple-tab-span" st=
yle=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0| =C2=A0+--rw value? =C2=A0 =C2=A0 rt-types:timer-value-second=
s16</div><div style=3D"margin:0px">577<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0| =C2=A0+--rw level-1</div><div style=3D"margin:0px">578<span cla=
ss=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0| =C2=A0+--rw value? =C2=A0 r=
t-types:timer-value-seconds16</div><div style=3D"margin:0px">579<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0+--rw level-2</div><div style=3D=
"margin:0px">580<span class=3D"Apple-tab-span" style=3D"white-space:pre">	<=
/span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=
=A0 +--rw value? =C2=A0 rt-types:timer-value-seconds16</div><div style=3D"m=
argin:0px"><br></div><div style=3D"margin:0px">[minor] Some implementations=
 support having a sub-second hello-interval...but with a timer in seconds t=
hat can&#39;t be done.</div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"=
margin:0px">860<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</=
span>2.5.=C2=A0 Authentication Parameters</div><div style=3D"margin:0px"><b=
r></div><div style=3D"margin:0px">862<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 The module enables authentication conf=
iguration through the IETF key-</div><div style=3D"margin:0px">863<span cla=
ss=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 chain modul=
e ([RFC8177]).=C2=A0 The IS-IS module imports the &quot;ietf-key-</div><div=
 style=3D"margin:0px">864<span class=3D"Apple-tab-span" style=3D"white-spac=
e:pre">	</span> =C2=A0 chain&quot; module and reuses some groupings to allo=
w global and per</div><div style=3D"margin:0px">865<span class=3D"Apple-tab=
-span" style=3D"white-space:pre">	</span> =C2=A0 interface configuration of=
 authentication.=C2=A0 If a global</div><div style=3D"margin:0px">866<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 authenti=
cation is configured, an implementation SHOULD authenticate</div><div style=
=3D"margin:0px">867<span class=3D"Apple-tab-span" style=3D"white-space:pre"=
>	</span> =C2=A0 PSNPs (Partial Sequence Number Packets), CSNPs (Complete S=
equence</div><div style=3D"margin:0px">868<span class=3D"Apple-tab-span" st=
yle=3D"white-space:pre">	</span> =C2=A0 Number Packets) and LSPs (Link Stat=
e Packets) with the authentication</div><div style=3D"margin:0px">869<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 paramete=
rs supplied.=C2=A0 The authentication of HELLO PDUs (Protocol Data</div><di=
v style=3D"margin:0px">870<span class=3D"Apple-tab-span" style=3D"white-spa=
ce:pre">	</span> =C2=A0 Units) can be activated on a per interface basis.</=
div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[nit] s/(=
[RFC8177])/[RFC8177]</div><div style=3D"margin:0px"><br></div><div style=3D=
"margin:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"mar=
gin:0px">894<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n>2.8.=C2=A0 IP FRR</div><div style=3D"margin:0px"><br></div><div style=3D"=
margin:0px">896<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</=
span> =C2=A0 This YANG module supports LFA (Loop Free Alternates) ([RFC5286=
]) and</div><div style=3D"margin:0px">897<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 remote LFA ([RFC7490]) as IP FRR tec=
hniques.=C2=A0 The &quot;fast-reroute&quot;</div><div style=3D"margin:0px">=
898<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0=
 container may be augmented by other models to support other IPFRR</div><di=
v style=3D"margin:0px">899<span class=3D"Apple-tab-span" style=3D"white-spa=
ce:pre">	</span> =C2=A0 flavors (MRT, TILFA ...).</div><div style=3D"margin=
:0px"><br></div><div style=3D"margin:0px">[nit] s/([RFC5286])...([RFC7490])=
/[RFC5286]...[RFC7490]</div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px">[minor] &quot;IPFRR&quot; is used above and in other places=
, but &quot;IP-FRR&quot; is used in several places as well.=C2=A0 Please be=
 consistent.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:=
0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px"=
>909<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 The &quot;candidate-disabled&quot; allows to mark an interface to not b=
e used</div><div style=3D"margin:0px">910<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 as a backup.</div><div style=3D"marg=
in:0px"><br></div><div style=3D"margin:0px">[major] &quot;candidate-disable=
d&quot; doesn&#39;t exist...but &quot;candidate-enable&quot; does...</div><=
div style=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></div><div=
 style=3D"margin:0px">...</div><div style=3D"margin:0px">951<span class=3D"=
Apple-tab-span" style=3D"white-space:pre">	</span>4.=C2=A0 Notifications</d=
iv><div style=3D"margin:0px">...</div><div style=3D"margin:0px">957<span cl=
ass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0lsp-too-large: raised when the system tries to propagate a too</div><div=
 style=3D"margin:0px">958<span class=3D"Apple-tab-span" style=3D"white-spac=
e:pre">	</span> =C2=A0 =C2=A0 =C2=A0large PDU.</div><div style=3D"margin:0p=
x"><br></div><div style=3D"margin:0px">[nit] s/a too large PDU/a PDU that i=
s too large</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0=
px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">=
978<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0=
 =C2=A0 =C2=A0sequence-number-skipped: This notification is sent when the s=
ystem</div><div style=3D"margin:0px">979<span class=3D"Apple-tab-span" styl=
e=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0receives a PDU with its =
own system ID and different contents.=C2=A0 The</div><div style=3D"margin:0=
px">980<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0system has to reissue the LSP with a higher sequence nu=
mber.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[n=
it] That&#39;s the last thing I would have guessed that this action would h=
ave been called...=C2=A0 Maybe it&#39;s just me...</div><div style=3D"margi=
n:0px"><br></div><div style=3D"margin:0px"><br></div><div style=3D"margin:0=
px">982<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0authentication-type-failure: This notification is sent =
when the</div><div style=3D"margin:0px">983<span class=3D"Apple-tab-span" s=
tyle=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0system receives a PDU=
 with the wrong authentication type field.</div><div style=3D"margin:0px"><=
br></div><div style=3D"margin:0px">985<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0authentication-failure: T=
his notification is sent when the system</div><div style=3D"margin:0px">986=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0receives a PDU with the wrong authentication information.</div=
><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[minor] Why =
do we need both of these?=C2=A0 Given that they both provide the same infor=
mation (including the raw PDU), and that authentication-type-failure is a s=
pecific case of receiving &quot;a PDU with the wrong authentication informa=
tion&quot;.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0=
px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">=
1039<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>6.=C2=
=A0 IS-IS YANG Module</div><div style=3D"margin:0px">...</div><div style=3D=
"margin:0px">1107<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span> =C2=A0 =C2=A0 =C2=A0 Editor: =C2=A0 =C2=A0Stephane Litkowski</div><=
div style=3D"margin:0px">1108<span class=3D"Apple-tab-span" style=3D"white-=
space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &lt;mailto:<a=
 href=3D"mailto:stephane.litkowski@orange.com">stephane.litkowski@orange.co=
m</a>&gt;</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px=
">1110<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Derek Yeung</div><div style=3D"margin:0px">=
1111<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &lt;mailto:<a href=3D"mailto:derek@a=
rrcus.com">derek@arrcus.com</a>&gt;</div><div style=3D"margin:0px">1112<spa=
n class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 Acee Lindem</div><div style=3D"margin:0px">1113<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 &lt;mailto:<a href=3D"mailto:acee@cisco.com">ac=
ee@cisco.com</a>&gt;</div><div style=3D"margin:0px">1114<span class=3D"Appl=
e-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 Jeffrey Zhang</div><div style=3D"margin:0px">1115<span class=3D"Appl=
e-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 &lt;mailto:<a href=3D"mailto:zzhang@juniper.net">zzhang@junip=
er.net</a>&gt;</div><div style=3D"margin:0px">1116<span class=3D"Apple-tab-=
span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 Ladislav Lhotka</div><div style=3D"margin:0px">1117<span class=3D"Apple-ta=
b-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 &lt;mailto:<a href=3D"mailto:llhotka@nic.cz">llhotka@nic.cz</a>&=
gt;</div><div style=3D"margin:0px">1118<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Yi Yang</d=
iv><div style=3D"margin:0px">1119<span class=3D"Apple-tab-span" style=3D"wh=
ite-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &lt;mailt=
o:<a href=3D"mailto:yiya@cisco.com">yiya@cisco.com</a>&gt;</div><div style=
=3D"margin:0px">1120<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Dean Bogdanovic</div><div sty=
le=3D"margin:0px">1121<span class=3D"Apple-tab-span" style=3D"white-space:p=
re">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &lt;mailto:<a href=
=3D"mailto:deanb@juniper.net">deanb@juniper.net</a>&gt;</div><div style=3D"=
margin:0px">1122<span class=3D"Apple-tab-span" style=3D"white-space:pre">	<=
/span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Kiran Agrahara Sreenivasa</div><d=
iv style=3D"margin:0px">1123<span class=3D"Apple-tab-span" style=3D"white-s=
pace:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &lt;mailto:<a =
href=3D"mailto:kkoushik@brocade.com">kkoushik@brocade.com</a>&gt;</div><div=
 style=3D"margin:0px">1124<span class=3D"Apple-tab-span" style=3D"white-spa=
ce:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Yingzhen Qu</div><div s=
tyle=3D"margin:0px">1125<span class=3D"Apple-tab-span" style=3D"white-space=
:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &lt;mailto:<a href=
=3D"mailto:yiqu@cisco.com">yiqu@cisco.com</a>&gt;</div><div style=3D"margin=
:0px">1126<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Jeff Tantsura</div><div style=3D"margin=
:0px">1127<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &lt;mailto:<a href=3D"mailto:jef=
ftant.ietf@gmail.com">jefftant.ietf@gmail.com</a>&gt;</div><div style=3D"ma=
rgin:0px"><br></div><div style=3D"margin:0px">[major] The list above is out=
 of date, and it doesn&#39;t match the author list on the first page of thi=
s document.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0=
px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">=
1239<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 feature nsr {</div><div style=3D"margin:0px">1240<span class=3D"=
Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 des=
cription</div><div style=3D"margin:0px">1241<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Non-St=
op-Routing (NSR) support.&quot;;</div><div style=3D"margin:0px">1242<span c=
lass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 }<=
/div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[minor] =
Reference?</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0p=
x"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">1=
255<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0=
 =C2=A0 feature overload-max-metric {</div><div style=3D"margin:0px">1256<s=
pan class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=
=A0 =C2=A0 description</div><div style=3D"margin:0px">1257<span class=3D"Ap=
ple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 &quot;Support of overload by setting</div><div style=3D"margin:0px">125=
8<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0all links to max metric.&quot;;</div><div style=
=3D"margin:0px">1259<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 }</div><div style=3D"margin:0px"><br></div><div st=
yle=3D"margin:0px">[minor] Reference?</div><div style=3D"margin:0px"><br></=
div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div>=
<div style=3D"margin:0px">1880<span class=3D"Apple-tab-span" style=3D"white=
-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 enum l1-up-internal=
 {</div><div style=3D"margin:0px">1881<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 des=
cription &quot;Level 1 internal route</div><div style=3D"margin:0px">1882<s=
pan class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0and not leaked to a lower level&quot;;</div><div style=3D"margin:0px"=
>1883<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px"><br></div>=
<div style=3D"margin:0px">[minor] &quot;Level 1 internal route and not leak=
ed to a lower level&quot; =C2=A0When would an L1 route ever be leaked to a =
lower level??=C2=A0 The same comment applies below.</div><div style=3D"marg=
in:0px"><br></div><div style=3D"margin:0px">1884<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 e=
num l2-up-external {</div><div style=3D"margin:0px">1885<span class=3D"Appl=
e-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 description &quot;Level 2 external route</div><div style=3D"m=
argin:0px">1886<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</=
span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0and not leaked to a lower level&quot;;</div><div style=
=3D"margin:0px">1887<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0=
px">1888<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 enum l1-up-external {</div><div style=3D=
"margin:0px">1889<span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quot;Level 1=
 external route</div><div style=3D"margin:0px">1890<span class=3D"Apple-tab=
-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0and not leaked t=
o a lower level&quot;;</div><div style=3D"margin:0px">1891<span class=3D"Ap=
ple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 }</div><div style=3D"margin:0px">1892<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 e=
num l2-down-internal {</div><div style=3D"margin:0px">1893<span class=3D"Ap=
ple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 description &quot;Level 2 internal route</div><div style=
=3D"margin:0px">1894<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0and leaked to a lower level&quot;;</div><div sty=
le=3D"margin:0px">1895<span class=3D"Apple-tab-span" style=3D"white-space:p=
re">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin=
:0px">1896<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 enum l1-down-internal {</div><div style=
=3D"margin:0px">1897<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quot;Leve=
l 1 internal route</div><div style=3D"margin:0px">1898<span class=3D"Apple-=
tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0and leaked to=
 a lower level&quot;;</div><div style=3D"margin:0px">1899<span class=3D"App=
le-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 }</div><div style=3D"margin:0px">1900<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 enum=
 l2-down-external {</div><div style=3D"margin:0px">1901<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 description &quot;Level 2 external route</div><div style=3D"m=
argin:0px">1902<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</=
span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0and leaked to a lower level&quot;;</div><div style=3D"=
margin:0px">1903<span class=3D"Apple-tab-span" style=3D"white-space:pre">	<=
/span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px">=
1904<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 enum l1-down-external {</div><div style=3D"=
margin:0px">1905<span class=3D"Apple-tab-span" style=3D"white-space:pre">	<=
/span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quot;Level 1 =
external route</div><div style=3D"margin:0px">1906<span class=3D"Apple-tab-=
span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0and leaked to a low=
er level&quot;;</div><div style=3D"margin:0px">1907<span class=3D"Apple-tab=
-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 }</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[m=
inor] What level is lower than L1?=C2=A0 The same comment applies to the l1=
-down-internal description.</div><div style=3D"margin:0px"><br></div><div s=
tyle=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div><div style=
=3D"margin:0px">2233<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 grouping hello-authentication-cfg {</div><div styl=
e=3D"margin:0px">2234<span class=3D"Apple-tab-span" style=3D"white-space:pr=
e">	</span> =C2=A0 =C2=A0 =C2=A0 choice authentication-type {</div><div sty=
le=3D"margin:0px">2235<span class=3D"Apple-tab-span" style=3D"white-space:p=
re">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 case key-chain {</div><div style=
=3D"margin:0px">2236<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 if-feature key-chain;</div><d=
iv style=3D"margin:0px">2237<span class=3D"Apple-tab-span" style=3D"white-s=
pace:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf key-chain {</div=
><div style=3D"margin:0px">2238<span class=3D"Apple-tab-span" style=3D"whit=
e-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type key-ch=
ain:key-chain-ref;</div><div style=3D"margin:0px">2239<span class=3D"Apple-=
tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 description &quot;Reference to a key-chain.&quot;;</div><div =
style=3D"margin:0px">2240<span class=3D"Apple-tab-span" style=3D"white-spac=
e:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"mar=
gin:0px">2241<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</sp=
an> =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px">2242<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 case password {</div><div style=3D"margin:0px">2243<span clas=
s=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 leaf key {</div><div style=3D"margin:0px">2244<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 type string;</div><div style=3D"margin:0px">2245<span=
 class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quot;Authentication key specificat=
ion - The</div><div style=3D"margin:0px">2246<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0length of the key may b=
e dependent on the</div><div style=3D"margin:0px">2247<span class=3D"Apple-=
tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0cryptographic=
 algorithm. In cases where</div><div style=3D"margin:0px">2248<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0it is=
 not, a key length of at least 32 octets</div><div style=3D"margin:0px">224=
9<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0should be supported to allow for</div><div style=3D"margin:0px">2=
250<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0interoperability with strong keys.&quot;;</div><div style=3D"marg=
in:0px">2251<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px"><br>=
</div><div style=3D"margin:0px">[major] I&#39;m hoping that the &quot;Authe=
ntication key specification&quot; is specified somewhere else so that a ref=
erence can be included here -- specially the part about the &quot;key lengt=
h of at least 32 octets should be supported to allow for interoperability w=
ith strong keys&quot;.</div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"=
margin:0px">2510<span class=3D"Apple-tab-span" style=3D"white-space:pre">	<=
/span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 if-feature max-ecmp;</div>=
<div style=3D"margin:0px">2511<span class=3D"Apple-tab-span" style=3D"white=
-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type uint16 =
{</div><div style=3D"margin:0px">2512<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 range &quot;1..32&quot;;</div><div style=3D"margin:0px">2513<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px">2514<span class=3D"A=
pple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 description</div><div style=3D"margin:0px">2515<span clas=
s=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Maximum number of Equal-Cost Multi-Pa=
th (ECMP) paths.&quot;;</div><div style=3D"margin:0px">2516<span class=3D"A=
pple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 }</div><div style=3D"margin:0px"><br></div><div style=3D"margin:=
0px">[nit] Why just 32?=C2=A0 Is that an architectural limit somehow?=C2=A0=
 It seems like a good opportunity to extend the number now and avoid future=
 need to change...</div><div style=3D"margin:0px"><br></div><div style=3D"m=
argin:0px"><br></div><div style=3D"margin:0px">2517<span class=3D"Apple-tab=
-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 container ietf-spf-delay {</div><div style=3D"margin:0px">2518<span cla=
ss=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 if-feature ietf-spf-delay;</div><div style=3D"marg=
in:0px">2519<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 uses ietf-spf-delay;</div><div=
 style=3D"margin:0px">2520<span class=3D"Apple-tab-span" style=3D"white-spa=
ce:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quo=
t;IETF SPF delay algorithm configuration.&quot;;</div><div style=3D"margin:=
0px">2521<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px"><br></d=
iv><div style=3D"margin:0px">[minor] Reference?</div><div style=3D"margin:0=
px"><br></div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"=
>...</div><div style=3D"margin:0px">2654<span class=3D"Apple-tab-span" styl=
e=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 container hello-padding=
 {</div><div style=3D"margin:0px">2655<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf enable {</di=
v><div style=3D"margin:0px">2656<span class=3D"Apple-tab-span" style=3D"whi=
te-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type boolean;</di=
v><div style=3D"margin:0px">2657<span class=3D"Apple-tab-span" style=3D"whi=
te-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 default &quot;tru=
e&quot;;</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"=
>[minor] I just noticed that in some cases (like here) quotes are used for =
the default (&quot;true&quot;), but in other cases no quotes are used.=C2=
=A0 I&#39;m not completely sure about the YANG syntax for booleans (rfc7950=
 wasn&#39;t clear to me), but I think that at least the document should be =
consistent.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0=
px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">=
3022<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 grouping packet-counters {</div><div style=3D"margin:0px">...</d=
iv><div style=3D"margin:0px">3100<span class=3D"Apple-tab-span" style=3D"wh=
ite-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 container unknow=
n {</div><div style=3D"margin:0px">3101<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 lea=
f in {</div><div style=3D"margin:0px">3102<span class=3D"Apple-tab-span" st=
yle=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 type uint32;</div><div style=3D"margin:0px">3103<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 description &quot;Received unknown PDUs.&quot;;</div><=
div style=3D"margin:0px">3104<span class=3D"Apple-tab-span" style=3D"white-=
space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div s=
tyle=3D"margin:0px">3105<span class=3D"Apple-tab-span" style=3D"white-space=
:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf out {</div><d=
iv style=3D"margin:0px">3106<span class=3D"Apple-tab-span" style=3D"white-s=
pace:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type ui=
nt32;</div><div style=3D"margin:0px">3107<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 description &quot;Sent unknown PDUs.&quot;;</div><div style=3D"margi=
n:0px">3108<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span=
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px=
"><br></div><div style=3D"margin:0px">[major] How can an implementation sen=
d unknown (to it!) PDUs??</div><div style=3D"margin:0px"><br></div><div sty=
le=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div><div style=
=3D"margin:0px">3995<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 grouping tlv242-router-capabilities {</div><div st=
yle=3D"margin:0px">3996<span class=3D"Apple-tab-span" style=3D"white-space:=
pre">	</span> =C2=A0 =C2=A0 =C2=A0 container router-capabilities {</div><di=
v style=3D"margin:0px">3997<span class=3D"Apple-tab-span" style=3D"white-sp=
ace:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 list router-capability {</div=
><div style=3D"margin:0px">3998<span class=3D"Apple-tab-span" style=3D"whit=
e-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf flags =
{</div><div style=3D"margin:0px">3999<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 type bits {</div><div style=3D"margin:0px">4000<span class=3D"Apple-tab=
-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 bit flooding {</div><div style=3D"margin:0px">4001=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 position 0;</div><d=
iv style=3D"margin:0px">4002<span class=3D"Apple-tab-span" style=3D"white-s=
pace:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 description</div><div style=3D"margin:0px">4003<span class=3D"Apple-=
tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;If the S bit is set, the IS=
-IS Router CAPABILITY</div><div style=3D"margin:0px">4004<span class=3D"App=
le-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0TLV MUST be flooded across=
 the entire routing</div><div style=3D"margin:0px">4005<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0domain. If the S bit is cle=
ar, the TLV MUST NOT</div><div style=3D"margin:0px">4006<span class=3D"Appl=
e-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0be leaked between levels. T=
his bit MUST NOT</div><div style=3D"margin:0px">4007<span class=3D"Apple-ta=
b-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 be altered during the TLV lea=
king.&quot;;</div><div style=3D"margin:0px">4008<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px">[major] This is a description of the behavior (copied from =
rfc7981!), not a description of the field.</div><div style=3D"margin:0px"><=
br></div><div style=3D"margin:0px">4009<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 bit down {</div><div style=3D"margin:0px">4010<span class=3D"App=
le-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 position 1;</div><div style=3D"margin:0=
px">4011<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description<=
/div><div style=3D"margin:0px">4012<span class=3D"Apple-tab-span" style=3D"=
white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 &quot;When the IS-IS Router CAPABILITY TLV is leaked</=
div><div style=3D"margin:0px">4013<span class=3D"Apple-tab-span" style=3D"w=
hite-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0from level-2 to level-1, the D bit MUST be set.<=
/div><div style=3D"margin:0px">4014<span class=3D"Apple-tab-span" style=3D"=
white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0Otherwise, this bit MUST be clear.=C2=A0 IS-IS R=
outer</div><div style=3D"margin:0px">4015<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0capability TLVs with the D bit set MUST N=
OT be</div><div style=3D"margin:0px">4016<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0leaked from level-1 to level-2 in to prev=
ent</div><div style=3D"margin:0px">4017<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0TLV looping.&quot;;</div><div style=3D"margi=
n:0px">4018<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span=
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px">[major] Same comment as=
 above...</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px=
"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">40=
36<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf binary {</div><div style=3D"margin:=
0px">4037<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type binary;</div><div sty=
le=3D"margin:0px">4038<span class=3D"Apple-tab-span" style=3D"white-space:p=
re">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</=
div><div style=3D"margin:0px">4039<span class=3D"Apple-tab-span" style=3D"w=
hite-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 &quot;Binary encoding of the IS-IS node capabilities&quot;;</div><di=
v style=3D"margin:0px">4040<span class=3D"Apple-tab-span" style=3D"white-sp=
ace:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div sty=
le=3D"margin:0px"><br></div><div style=3D"margin:0px">[major] I may be miss=
ing this completely...=C2=A0 How are the capabilities encoded?=C2=A0 Does t=
his information come from the sub-TLVs in TLV 242?=C2=A0 Somewhere else?</d=
iv><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></div>=
<div style=3D"margin:0px">...</div><div style=3D"margin:0px">4540<span clas=
s=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 notif=
ication lsp-too-large {</div><div style=3D"margin:0px">4541<span class=3D"A=
pple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 uses=
 notification-instance-hdr;</div><div style=3D"margin:0px">4542<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 uses notification-interface-hdr;</div><div style=3D"margin:0px"><br></div>=
<div style=3D"margin:0px">4544<span class=3D"Apple-tab-span" style=3D"white=
-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 leaf pdu-size {</div><div style=
=3D"margin:0px">4545<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 type uint32;</div><div style=3D"marg=
in:0px">4546<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n> =C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quot;Size of the LSP PDU&quot;;=
</div><div style=3D"margin:0px">4547<span class=3D"Apple-tab-span" style=3D=
"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin=
:0px">4548<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>=
 =C2=A0 =C2=A0 =C2=A0 leaf lsp-id {</div><div style=3D"margin:0px">4549<spa=
n class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 type lsp-id;</div><div style=3D"margin:0px">4550<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 description &quot;LSP ID&quot;;</div><div style=3D"margin:0px"><br>=
</div><div style=3D"margin:0px">4552<span class=3D"Apple-tab-span" style=3D=
"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin=
:0px">4553<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>=
 =C2=A0 =C2=A0 =C2=A0 description</div><div style=3D"margin:0px">4554<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 &quot;This notification is sent when we attempt to propagate<=
/div><div style=3D"margin:0px">4555<span class=3D"Apple-tab-span" style=3D"=
white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0an LSP that is =
larger than the dataLinkBlockSize for the</div><div style=3D"margin:0px">45=
56<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0circuit.=C2=A0 The notification generation must =
be throttled</div><div style=3D"margin:0px">4557<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0wi=
th at least 5 seconds between successive</div><div style=3D"margin:0px">455=
8<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0notifications.&quot;;</div><div style=3D"margin:=
0px">4559<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 }</div><div style=3D"margin:0px"><br></div><div style=3D"marg=
in:0px">[minor] A reference to dataLinkBlockSize would be very nice.</div><=
div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[minor] This n=
otification is specific to a circuit.=C2=A0 Why aren&#39;t the interface an=
d its MTU included in it?</div><div style=3D"margin:0px"><br></div><div sty=
le=3D"margin:0px">[major] &quot;must be throttled&quot; =C2=A0Why is this t=
ext not Normative?=C2=A0 It seems to me that throttling is a good practice.=
..in fact, it may be a good idea to specify it for all notifications.=C2=A0=
 There are 12 total instances of the same text.</div><div style=3D"margin:0=
px"><br></div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"=
>...</div><div style=3D"margin:0px">4845<span class=3D"Apple-tab-span" styl=
e=3D"white-space:pre">	</span> =C2=A0 =C2=A0 notification lsp-received {</d=
iv><div style=3D"margin:0px">...</div><div style=3D"margin:0px">4865<span c=
lass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 }</div><div style=3D"margin:0px">4866<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 description</div><d=
iv style=3D"margin:0px">4867<span class=3D"Apple-tab-span" style=3D"white-s=
pace:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;This notification is s=
ent when an LSP is received.</div><div style=3D"margin:0px">4868<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0The notification generation must be throttled with at</div><d=
iv style=3D"margin:0px">4869<span class=3D"Apple-tab-span" style=3D"white-s=
pace:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0least 5 seconds betwee=
n successive notifications.&quot;;</div><div style=3D"margin:0px">4870<span=
 class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0}</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">=
[minor] In the case of lsp-received, 5 seconds is a very long time...specia=
lly since there&#39;s the potential to receive many LSPs within a short per=
iod of time.=C2=A0 I&#39;m not advocating against throttling, but I am curi=
ous how an event with multiple LSPs in a short time (&lt;&lt; 5 sec) would =
be handled.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0=
px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">=
4897<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>7.=C2=
=A0 Security Considerations</div><div style=3D"margin:0px">...</div><div st=
yle=3D"margin:0px">4941<span class=3D"Apple-tab-span" style=3D"white-space:=
pre">	</span> =C2=A0 Some of the RPC operations in this YANG module may be =
considered</div><div style=3D"margin:0px">4942<span class=3D"Apple-tab-span=
" style=3D"white-space:pre">	</span> =C2=A0 sensitive or vulnerable in some=
 network environments.=C2=A0 It is thus</div><div style=3D"margin:0px">4943=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 im=
portant to control access to these operations.=C2=A0 The OSPF YANG</div><di=
v style=3D"margin:0px">4944<span class=3D"Apple-tab-span" style=3D"white-sp=
ace:pre">	</span> =C2=A0 module support the &quot;clear-adjacency&quot; and=
 &quot;clear-database&quot; RPCs.=C2=A0 If</div><div style=3D"margin:0px">4=
945<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0=
 access to either of these is compromised, they can result in</div><div sty=
le=3D"margin:0px">4946<span class=3D"Apple-tab-span" style=3D"white-space:p=
re">	</span> =C2=A0 temporary network outages be employed to mount DoS atta=
cks.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[mi=
nor] s/OSPF/IS-IS ;-)</div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"=
margin:0px">4954<span class=3D"Apple-tab-span" style=3D"white-space:pre">	<=
/span>9.=C2=A0 IANA Considerations</div><div style=3D"margin:0px"><br></div=
><div style=3D"margin:0px">4956<span class=3D"Apple-tab-span" style=3D"whit=
e-space:pre">	</span> =C2=A0 The IANA is requested to assign two new URIs f=
rom the IETF XML</div><div style=3D"margin:0px">4957<span class=3D"Apple-ta=
b-span" style=3D"white-space:pre">	</span> =C2=A0 registry ([RFC3688]).=C2=
=A0 Authors are suggesting the following URI:</div><div style=3D"margin:0px=
"><br></div><div style=3D"margin:0px">[nit] s/([RFC3688])/[RFC3688]</div><d=
iv style=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></div><div =
style=3D"margin:0px">...</div><div style=3D"margin:0px">4963<span class=3D"=
Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 This document als=
o requests one new YANG module name in the YANG</div><div style=3D"margin:0=
px">4964<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 Module Names registry ([RFC6020]) with the following suggestion:</di=
v><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[nit] s/([R=
FC6020])/[RFC6020]</div><div style=3D"margin:0px"><br></div><div style=3D"m=
argin:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margi=
n:0px">4973<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span=
>10.1.=C2=A0 Normative References</div><div style=3D"margin:0px">...</div><=
div style=3D"margin:0px">5083<span class=3D"Apple-tab-span" style=3D"white-=
space:pre">	</span> =C2=A0 [RFC7810] =C2=A0Previdi, S., Ed., Giacalone, S.,=
 Ward, D., Drake, J., and</div><div style=3D"margin:0px">5084<span class=3D=
"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0Q. Wu, &quot;IS-IS Traffic Engineering (TE) Metr=
ic Extensions&quot;,</div><div style=3D"margin:0px">5085<span class=3D"Appl=
e-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0RFC 7810, DOI 10.17487/RFC7810, May 2016,</div><div sty=
le=3D"margin:0px">5086<span class=3D"Apple-tab-span" style=3D"white-space:p=
re">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;<a href=3D=
"https://www.rfc-editor.org/info/rfc7810">https://www.rfc-editor.org/info/r=
fc7810</a>&gt;.</div><div style=3D"margin:0px"><br></div><div style=3D"marg=
in:0px">[major] This RFC has been Obsoleted by rfc8570.=C2=A0 Please update=
 the reference.</div><div style=3D"margin:0px"><br></div><div style=3D"marg=
in:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0=
px">5144<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>10=
.2.=C2=A0 Informative References</div><div style=3D"margin:0px"><br></div><=
div style=3D"margin:0px">5146<span class=3D"Apple-tab-span" style=3D"white-=
space:pre">	</span> =C2=A0 [RFC5443] =C2=A0Jork, M., Atlas, A., and L. Fang=
, &quot;LDP IGP</div><div style=3D"margin:0px">5147<span class=3D"Apple-tab=
-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0Synchronization&quot;, RFC 5443, DOI 10.17487/RFC5443, Mar=
ch</div><div style=3D"margin:0px">5148<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A02009, &lt;<a href=3D"https://www.rfc-editor.org/info/rfc5443">https://ww=
w.rfc-editor.org/info/rfc5443</a>&gt;.</div><div style=3D"margin:0px"><br><=
/div><div style=3D"margin:0px">[major] As all the other references to IS-IS=
 functionality, this should also be Normative.=C2=A0 Note that this referen=
ce is already in the Downref registry; IOW, there are no issues with it bei=
ng an Informational RFC.</div><div style=3D"font-family:Helvetica,Arial;fon=
t-size:13px"><br></div></div><div class=3D"bloop_container"><div class=3D"b=
loop_frame">  </div></div><br><div class=3D"gmail_signature"></div></body><=
/html>

--000000000000957309058a863e6e--


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Subject: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-03.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Link State Routing WG of the IETF.

        Title           : Dynamic Flooding on Dense Graphs
        Authors         : Tony Li
                          Peter Psenak
                          Les Ginsberg
                          Huaimo Chen
                          Tony Przygienda
                          Dave Cooper
                          Luay Jalil
                          Srinath Dontula
	Filename        : draft-ietf-lsr-dynamic-flooding-03.txt
	Pages           : 47
	Date            : 2019-06-04

Abstract:
   Routing with link state protocols in dense network topologies can
   result in sub-optimal convergence times due to the overhead
   associated with flooding.  This can be addressed by decreasing the
   flooding topology so that it is less dense.

   This document discusses the problem in some depth and an
   architectural solution.  Specific protocol changes for IS-IS, OSPFv2,
   and OSPFv3 are described in this document.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-lsr-dynamic-flooding/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-lsr-dynamic-flooding-03
https://datatracker.ietf.org/doc/html/draft-ietf-lsr-dynamic-flooding-03

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-lsr-dynamic-flooding-03


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.

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From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
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Thread-Topic: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-03.txt
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Subject: Re: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-03.txt
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With this new version we welcome Huaimo Chen as a co-author.

   Les

> -----Original Message-----
> From: Lsr <lsr-bounces@ietf.org> On Behalf Of internet-drafts@ietf.org
> Sent: Tuesday, June 04, 2019 4:39 PM
> To: i-d-announce@ietf.org
> Cc: lsr@ietf.org
> Subject: [Lsr] I-D Action: draft-ietf-lsr-dynamic-flooding-03.txt
>=20
>=20
> A New Internet-Draft is available from the on-line Internet-Drafts direct=
ories.
> This draft is a work item of the Link State Routing WG of the IETF.
>=20
>         Title           : Dynamic Flooding on Dense Graphs
>         Authors         : Tony Li
>                           Peter Psenak
>                           Les Ginsberg
>                           Huaimo Chen
>                           Tony Przygienda
>                           Dave Cooper
>                           Luay Jalil
>                           Srinath Dontula
> 	Filename        : draft-ietf-lsr-dynamic-flooding-03.txt
> 	Pages           : 47
> 	Date            : 2019-06-04
>=20
> Abstract:
>    Routing with link state protocols in dense network topologies can
>    result in sub-optimal convergence times due to the overhead
>    associated with flooding.  This can be addressed by decreasing the
>    flooding topology so that it is less dense.
>=20
>    This document discusses the problem in some depth and an
>    architectural solution.  Specific protocol changes for IS-IS, OSPFv2,
>    and OSPFv3 are described in this document.
>=20
>=20
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-lsr-dynamic-flooding/
>=20
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-lsr-dynamic-flooding-03
> https://datatracker.ietf.org/doc/html/draft-ietf-lsr-dynamic-flooding-03
>=20
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-lsr-dynamic-flooding-03
>=20
>=20
> Please note that it may take a couple of minutes from the time of submiss=
ion
> until the htmlized version and diff are available at tools.ietf.org.
>=20
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>=20
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr


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Subject: [Lsr] Publication has been requested for draft-ietf-lsr-isis-rfc5306bis-02
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Acee Lindem has requested publication of draft-ietf-lsr-isis-rfc5306bis-02 as None on behalf of the LSR working group.

Please verify the document's state at https://datatracker.ietf.org/doc/draft-ietf-lsr-isis-rfc5306bis/


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Hi all,

This update:

- Fixes a bug in how LAN IIHs were being handled.  In fact, we do need =
one PDU per level.

- Added support for flooding scopes.

- Welcomes Les and Paul Wells as co-authors.

Questions and comments to the list, please.

Tony


> Begin forwarded message:
>=20
> From: internet-drafts@ietf.org
> Subject: New Version Notification for =
draft-li-lsr-isis-hierarchical-isis-01.txt
> Date: June 5, 2019 at 1:13:07 PM PDT
> To: "Paul Wells" <pauwells@cisco.com>, "Tony Li" <tony.li@tony.li>, =
"Les Ginsberg" <ginsberg@cisco.com>
>=20
>=20
> A new version of I-D, draft-li-lsr-isis-hierarchical-isis-01.txt
> has been successfully submitted by Tony Li and posted to the
> IETF repository.
>=20
> Name:		draft-li-lsr-isis-hierarchical-isis
> Revision:	01
> Title:		Hierarchical IS-IS
> Document date:	2019-06-05
> Group:		Individual Submission
> Pages:		9
> URL:            =
https://www.ietf.org/internet-drafts/draft-li-lsr-isis-hierarchical-isis-0=
1.txt
> Status:         =
https://datatracker.ietf.org/doc/draft-li-lsr-isis-hierarchical-isis/
> Htmlized:       =
https://tools.ietf.org/html/draft-li-lsr-isis-hierarchical-isis-01
> Htmlized:       =
https://datatracker.ietf.org/doc/html/draft-li-lsr-isis-hierarchical-isis
> Diff:           =
https://www.ietf.org/rfcdiff?url2=3Ddraft-li-lsr-isis-hierarchical-isis-01=

>=20
> Abstract:
>   The IS-IS routing protocol was originally defined with a two level
>   hierarchical structure.  This was adequate for the networks at the
>   time.  As we continue to expand the scale of our networks, it is
>   apparent that additional hierarchy would be a welcome degree of
>   flexibility in network design.
>=20
>   This document defines IS-IS Levels 3 through 8.
>=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=_ED95FF82-91AE-4ACB-B98A-6EABF53A5A43
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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>Hi all,<div class=3D""><br =
class=3D""></div><div class=3D"">This update:</div><div class=3D""><br =
class=3D""></div><div class=3D"">- Fixes a bug in how LAN IIHs were =
being handled. &nbsp;In fact, we do need one PDU per level.</div><div =
class=3D""><br class=3D""></div><div class=3D"">- Added support for =
flooding scopes.</div><div class=3D""><br class=3D""></div><div =
class=3D"">- Welcomes Les and Paul Wells as co-authors.</div><div =
class=3D""><br class=3D""></div><div class=3D"">Questions and comments =
to the list, please.</div><div class=3D""><br class=3D""></div><div =
class=3D"">Tony</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-hierarchical-isis-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"">June 5, 2019 at 1:13:07 PM =
PDT<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"">"Paul Wells" &lt;<a =
href=3D"mailto:pauwells@cisco.com" class=3D"">pauwells@cisco.com</a>&gt;, =
"Tony Li" &lt;<a href=3D"mailto:tony.li@tony.li" =
class=3D"">tony.li@tony.li</a>&gt;, "Les Ginsberg" &lt;<a =
href=3D"mailto:ginsberg@cisco.com" =
class=3D"">ginsberg@cisco.com</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-hierarchical-isis-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-hierarchical-isis<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>Hierarchical IS-IS<br class=3D"">Document date:<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>2019-06-05<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>9<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-hierarchica=
l-isis-01.txt" =
class=3D"">https://www.ietf.org/internet-drafts/draft-li-lsr-isis-hierarch=
ical-isis-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-hierarchical-is=
is/" =
class=3D"">https://datatracker.ietf.org/doc/draft-li-lsr-isis-hierarchical=
-isis/</a><br class=3D"">Htmlized: =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a =
href=3D"https://tools.ietf.org/html/draft-li-lsr-isis-hierarchical-isis-01=
" =
class=3D"">https://tools.ietf.org/html/draft-li-lsr-isis-hierarchical-isis=
-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-hierarchic=
al-isis" =
class=3D"">https://datatracker.ietf.org/doc/html/draft-li-lsr-isis-hierarc=
hical-isis</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-hierarchical=
-isis-01" =
class=3D"">https://www.ietf.org/rfcdiff?url2=3Ddraft-li-lsr-isis-hierarchi=
cal-isis-01</a><br class=3D""><br class=3D"">Abstract:<br class=3D""> =
&nbsp;&nbsp;The IS-IS routing protocol was originally defined with a two =
level<br class=3D""> &nbsp;&nbsp;hierarchical structure. &nbsp;This was =
adequate for the networks at the<br class=3D""> &nbsp;&nbsp;time. =
&nbsp;As we continue to expand the scale of our networks, it is<br =
class=3D""> &nbsp;&nbsp;apparent that additional hierarchy would be a =
welcome degree of<br class=3D""> &nbsp;&nbsp;flexibility in network =
design.<br class=3D""><br class=3D""> &nbsp;&nbsp;This document defines =
IS-IS Levels 3 through 8.<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=_ED95FF82-91AE-4ACB-B98A-6EABF53A5A43--


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From: Roman Danyliw <rdd@cert.org>
To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, The IESG <iesg@ietf.org>
CC: "draft-ietf-isis-segment-routing-extensions@ietf.org" <draft-ietf-isis-segment-routing-extensions@ietf.org>, Christian Hopps <chopps@chopps.org>, "uma.chunduri@huawei.com" <uma.chunduri@huawei.com>, "aretana.ietf@gmail.com" <aretana.ietf@gmail.com>, "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: [Lsr] Roman Danyliw's Discuss on draft-ietf-isis-segment-routing-extensions-24: (with DISCUSS and COMMENT)
Thread-Index: AQHVC1LykCcUyZN7sUKQlUP58RIGYqZs5BYAgCDFyfA=
Date: Wed, 5 Jun 2019 20:51:19 +0000
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Subject: Re: [Lsr] Roman Danyliw's Discuss on draft-ietf-isis-segment-routing-extensions-24: (with DISCUSS and COMMENT)
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Dear authors:

I just finished reading this document.  I have some comments in-line,
including a couple that I consider major -- I'll wait for whose to be
addressed before moving forward.

The datatracker reports 4 errors in the model, mostly related to
ietf-bfd-types.  Please take a look.

Thanks!

Alvaro.


[Line numbers from id-nits.]

...
81 1.  Overview
...
92   This document defines a YANG data model that can be used to configure
93   and manage OSPF and it is an augmentation to the core routing data
94   model.  If fully conforms to the Network Management Datastore
95   Architecture (NDMA) [RFC8342].  A core routing data model is defined
96   in [RFC8349], and it provides the basis for the development of data
97   models for routing protocols.  The interface data model is defined in
98   [RFC8343] and is used for referencing interfaces from the routing
99   protocol.  The key-chain data model used for OSPF authentication is
100   defined in [RFC8177] and provides both a reference to configured key-
101   chains and an enumeration of cryptographic algorithms.

[nit] s/If fully conforms/It fully conforms


103   Both OSPFv2 [RFC2328] and OSPFv3 [RFC5340] are supported.  In
104   addition to the core OSPF protocol, features described in other OSPF
105   RFCs are also supported.  These includes demand circuit [RFC1793],
106   traffic engineering [RFC3630], multiple address family [RFC5838],
107   graceful restart [RFC3623] [RFC5187], NSSA [RFC3101], and OSPF(v3) as
108   a PE-CE Protocol [RFC4577], [RFC6565].  These non-core features are
109   optional in the OSPF data model.

[nit] s/OSPF(v3) as a PE-CE Protocol/use as a PE-CE Protocol    Using
"OSPF(v3)" is confusing because it is not clear whether OSPFv3-only is
meant or both, but v2 is not mentioned...


...
138 2.1.  OSPF Operational State

140   The OSPF operational state is included in the same tree as OSPF
141   configuration consistent with Network Management Datastore
142   Architecture [RFC8342].  Consequently, only the routing container in
143   the ietf-routing model [RFC8349] is augmented.  The routing-state
144   container is not augmented.

[nit] s/consistent with Network/consistent with the Network


146 2.2.  Overview
...
154   module: ietf-ospf
155     augment /rt:routing/rt:control-plane-protocols/
156              rt:control-plane-protocol:
157       +--rw ospf
158             .
159             .
160          +--rw operation-mode?          identityref
161          +--rw af?                      identityref
162             .
163             .
164          +--rw areas
165          |  +--rw area* [area-id]
166          |     +--rw area-id                   area-id-type
167          |        .
168          |        .
169          |     +--rw virtual-links
170          |     |  +--rw virtual-link* [transit-area-id router-id]
171          |     |     .
172          |     |     .
173          |     +--rw sham-links {pe-ce-protocol}?
174          |     |  +--rw sham-link* [local-id remote-id]
175          |     |     .
176          |     |     .
177          |     +--rw interfaces
178          |        +--rw interface* [name]
179          |           .
180          |           .
181          +--rw topologies {multi-topology}?
182             +--rw topology* [name]
183                .
184                .

186   The ospf module is intended to match to the vendor specific OSPF
187   configuration construct that is identified by the local identifier
188   'name'.  The field 'version' allows support for OSPFv2 and OSPFv3.

[minor] The 'version' field doesn't appear in the tree above.  =C2=A72.3 sa=
ys
the same thing with more details.  Perhaps take the sentence out of this
paragraph.


190   The ospf container includes one OSPF protocol engine instance.  The
191   instance includes OSPF router level configuration and operational
192   state.

[??] One of the things that is confusing me is the instance concept in the
model.  I understand instances in OSPF, and I see how the module is
organized around instances ("grouping instance-..."), including even
per-instance Router-ID.  But I don't see anywhere the definition of an
instance-id (except attached to an interface (=C2=A72.7) and specific to OS=
PFv3
(=C2=A73))...if wanting to configure (or read from) a specific instance, ho=
w
does the client differentiate?  [YANG is not my thing, so this may be
obvious to everyone else.  If it is, a quick pointer would be very
appreciated.]


...
209 2.4.  Optional Features
...
221   3.   explicit-router-id: Support explicit per-instance Router-ID
222        specification.

[minor] Is there a reference?  Should the document point to rfc5340/rfc6549
here?


...
234   8.   ttl-security: Support OSPF Time to Live (TTL) security check
235        suppression [RFC5082].

[minor] s/suppression/support    Right?

237   9.   nsr: Support OSPF Non-Stop Routing (NSR).

[minor] Reference?

...
242   11.  admin-control: Support Administrative control of the protocol
243        state.

[minor] This seems like a "basic" feature: enabling/disabling the
protocol.  Why was it decided to make it optional?  Are there
implementations that don't support enabling/disabling?


...
261   17.  ospfv2-authentication-trailer: Support OSPFv2 Authentication
262        trailer as specified in [RFC5709] or [RFC7166].

[minor] s/RFC7166/RFC7474

...
267   19.  ospfv3-authentication-trailer: Support OSPFv3 Authentication
268        trailer as specified in [RFC7474].

[minor] s/RFC7474/RFC7166


...
300 2.5.  OSPF Router Configuration/Operational State
...
308   module: ietf-ospf
...
336          +--rw enable?               boolean {admin-control}?

[nit] Perhaps the admin-control should be moved closer to the start of this
branch so it is clear what is being enabled/disabled.


...
464 2.6.  OSPF Area Configuration/Operational State
...
570          |     |     +--rw hello-interval?       uint16
571          |     |     +--rw dead-interval?        uint32
572          |     |     +--rw retransmit-interval?  uint16

[minor] Why aren't rt-types:timer-value-* used for the *-timer/interval
definitions?  I would have thought this was exactly the reason for the
definitions in rfc8294.


...
1054 2.9.  OSPF RPC Operations
...
1061   o  clear-neighbor: restart a particular set of OSPF neighbor.

[minor] Should the description be something like: "reset a set of OSPF
neighbors on a particular interface"?

1063     rpcs:
1064       +---x clear-neighbor
1065       |  +---w input
1066       |     +---w routing-protocol-name
1067       |     +     -> /rt:routing/control-plane-protocols/
1068       |     +         control-plane-protocol/name
1069       |     +---w interface?               if:interface-ref


...
1076 3.  OSPF YANG Module
...
1143        Editor:   Derek Yeung
1144                  <mailto:derek@arrcus.com>
1145        Author:   Acee Lindem
1146                  <mailto:acee@cisco.com>
1147        Author:   Yingzhen Qu
1148                  <mailto:yingzhen.qu@huawei.com>
1149        Author:   Jeffrey Zhang
1150                  <mailto:zzhang@juniper.net>
1151        Author:   Ing-Wher Chen
1152                  <mailto:ingwherchen@mitre.org>
1153        Author:   Dean Bogdanovic
1154                  <mailto:ivandean@gmail.com>
1155        Author:   Kiran Agrahara Sreenivasa
1156                  <mailto:kk@employees.org";

[minor] This list is not the same as what is in the front page of this
document.


...
1685     typedef if-state-type {
1686       type enumeration {
...
1712         enum backup {
1713           value "6";
1714           description
1715             "Interface Backup Designated Router (BDR) state.";
1716         }

[nit] s/backup/bdr   To match the other instances where a BDR is referenced=
.


...
2729       container network {
2730         when "derived-from-or-self(../../header/type, "
2731            + "'ospfv3-network-lsa')" {
2732           description
2733             "Only applies to Network LSAs.";
2734         }
2735         description "Network LSA.";

[nit] Perhaps network-lsa could be a better name.


...
3053     grouping lsa-common {
3054       description
3055           "Common fields for OSPF LSA representation.";
3056       leaf decoded-completed {
3057         type boolean;
3058         description
3059           "The OSPF LSA body is fully decoded.";
3060       }

[minor] What is decoded-completed indicating?  Does it indicate that no
errors where found, IOW, "successful decoding"?  Does it mean that the LSA
has been decoded (but not an indication of success, or not)?  Is it a
time-based indication; IOW, is there a chance that an LSA has not been
processed when retrieving the information...would that result in false??


...
3271     grouping instance-fast-reroute-state {
3272       description "IPFRR state data grouping";

[nit] s/IPFRR/IP-FRR   That is how the term is used everywhere else in this
document.


...
3541       leaf hello-interval {
3542         type uint16 {
3543           range "1..65535";
3544         }
3545         description
3546           "Interval between hello packets (seconds). It must
3547            be the same for all routers on the same network.
3548            Different networks, implementations, and deployments
3549            will use different hello-intervals. A sample value
3550            for a LAN network would be 10 seconds.";
3551       }

[minor] Some implementations support having a sub-second
hello-interval...but with a timer in seconds that can't be done.


...
3664                 leaf ospfv2-key {
3665                   type string;
3666                   description
3667                     "OSPFv2 authentication key. The
3668                      length of the key may be dependent on the
3669                      cryptographic algorithm. In cases where it is
3670                      not, a key length of at least 32 octets should
3671                      be supported to allow for interoperability
3672                      with strong keys.";

[major] Is there a reference for the part about the "key length of at least
32 octets should be supported to allow for interoperability with strong
keys"?


...
3719                 leaf ospfv3-key {
3720                   type string;
3721                   description
3722                     "OSPFv2 authentication key. The
3723                      length of the key may be dependent on the
3724                      cryptographic algorithm. In cases where it is
3725                      not, a key length of at least 32 octets should
3726                      be supported to allow for interoperability
3727                      with strong keys.";

[major] The same comment from ospfv2-key applies here.

[nit] s/OSPFv2 authentication key/OSPFv3 authentication key


...
3856           leaf priority {
3857             type uint8 {
3858               range "1..255";
3859             }
3860             description "Neighbor priority for DR election.";
3861           }

[minor] A range is included in this definition, but not in other priority
statements before...should a range be included in those other definitions?

[minor] Why is 0 not applicable here?


...
3936       leaf dead-timer {
3937         type uint32;
3938         units "seconds";
3939         config false;
3940         description "This timer tracks the remaining time before
3941                      the neighbor is declared dead.";
3942       }

[major] For *-timer: Is tracking the remaining time in seconds enough?  I
would assume that ms would be the right unit.  Why seconds?


...
4390       container preference {
4391         description "Route preference config state.";

[minor] Maybe it's just me, but I don't understand what this piece of the
model does.  It seems like it can be used to configure which type of route
is preferred: external over intra-area, for example...but that doens't make
too much sense to me.  Is that the intended use?  Can you please give me an
example of when this functionality could be used?

4392         choice scope {
4393           description
4394             "Options for expressing preference
4395              as single or multiple values.";
4396           case single-value {
4397             leaf all {
4398               type uint8;
4399               description
4400                 "Preference for intra-area, inter-area, and
4401                  external routes.";
4402             }
4403           }
4404           case multi-values {
4405             choice granularity {
4406               description
4407                 "Options for expressing preference
4408                  for intra-area and inter-area routes.";
4409               case detail {
4410                 leaf intra-area {
4411                   type uint8;
4412                   description
4413                     "Preference for intra-area routes.";
4414                 }
4415                 leaf inter-area {
4416                   type uint8;
4417                   description
4418                     "Preference for inter-area routes.";
4419                 }
4420               }
4421               case coarse {
4422                 leaf internal {
4423                   type uint8;
4424                   description
4425                     "Preference for both intra-area and
4426                      inter-area routes.";
4427                 }
4428               }
4429             }
4430             leaf external {
4431               type uint8;
4432               description
4433                 "Preference for AS external routes.";
4434             }
4435           }

4437         }
4438       }


...
4551       container stub-router {
4552         if-feature stub-router;
4553         description "Set maximum metric configuration";

4555         choice trigger {
4556           description
4557             "Specific triggers which will enable stub
4558              router state.";
4559           container always {
4560             presence
4561               "Enables unconditional stub router support";
4562             description
4563               "Unconditional stub router state (advertise
4564                transit links with max metric";

[minor] s//MaxLinkMetric [rfc6897]


...
5537 4.  Security Considerations
...
5552   There are a number of data nodes defined in ietf-ospf.yang module
5553   that are writable/creatable/deletable (i.e., config true, which is
5554   the default).  These data nodes may be considered sensitive or
5555   vulnerable in some network environments.  Write operations (e.g.,
5556   edit-config) to these data nodes without proper protection can have =
a
5557   negative effect on network operations.  For OSPF, the ability to
5558   modify OSPF configuration will allow the entire OSPF domain to be
5559   compromised including peering with unauthorized routers to misroute
5560   traffic or mount a massive Denial-of-Service (DoS) attack.  The
5561   security considerations of OSPFv2 [RFC2328] and [RFC5340] apply to
5562   the ietf-ospf.yang module as well.

[minor] s/OSPFv2 [RFC2328] and [RFC5340]/OSPFv2 [RFC2328] and OSPFv3
[RFC5340]

[major] How do the "security considerations of OSPFv2 [RFC2328] and
[RFC5340] apply to the ietf-ospf.yang module"?  rfc2328/rfc5340 only talk
about authentication of the protocol exchange...


...
5626 7.1.  Normative References
...
5679   [RFC4750]  Joyal, D., Ed., Galecki, P., Ed., Giacalone, S., Ed.,
5680              Coltun, R., and F. Baker, "OSPF Version 2 Management
5681              Information Base", RFC 4750, DOI 10.17487/RFC4750,
5682              December 2006, <https://www.rfc-editor.org/info/rfc4750>.
...
5731   [RFC5643]  Joyal, D., Ed. and V. Manral, Ed., "Management Informatio=
n
5732              Base for OSPFv3", RFC 5643, DOI 10.17487/RFC5643, August
5733              2009, <https://www.rfc-editor.org/info/rfc5643>.
...
5745   [RFC5880]  Katz, D. and D. Ward, "Bidirectional Forwarding Detection
5746              (BFD)", RFC 5880, DOI 10.17487/RFC5880, June 2010,
5747              <https://www.rfc-editor.org/info/rfc5880>.

5749   [RFC5881]  Katz, D. and D. Ward, "Bidirectional Forwarding Detection
5750              (BFD) for IPv4 and IPv6 (Single Hop)", RFC 5881,
5751              DOI 10.17487/RFC5881, June 2010, <https://www.rfc-
5752              editor.org/info/rfc5881>.

[minor] I think these references can be Informative.


...
5880 7.2.  Informative References

[major] All the references in this section (except maybe rfc905) point at
functionality in the model...as the references above, these should be
Normative as well.

These documents are already in the Downref registry: rfc5309, rfc5443,
rfc5714, rfc6987.

The others are not, but I don't expect any issues in the IETF Last Call.

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<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div style=3D"margin:0px"><div =
style=3D"margin:0px">Dear authors:</div><div style=3D"margin:0px"><br></div=
><div style=3D"margin:0px">I just finished reading this document.=C2=A0 I h=
ave some comments in-line, including a couple that I consider major -- I&#3=
9;ll wait for whose to be addressed before moving forward.</div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px">The datatracker reports=
 4 errors in the model, mostly related to ietf-bfd-types.=C2=A0 Please take=
 a look.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"=
>Thanks!</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"=
>Alvaro.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"=
><br></div><div style=3D"margin:0px">[Line numbers from id-nits.]</div><div=
 style=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div><div sty=
le=3D"margin:0px">81<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span>1.=C2=A0 Overview</div><div style=3D"margin:0px">...</div><div st=
yle=3D"margin:0px">92<span class=3D"Apple-tab-span" style=3D"white-space:pr=
e">	</span> =C2=A0 This document defines a YANG data model that can be used=
 to configure</div><div style=3D"margin:0px">93<span class=3D"Apple-tab-spa=
n" style=3D"white-space:pre">	</span> =C2=A0 and manage OSPF and it is an a=
ugmentation to the core routing data</div><div style=3D"margin:0px">94<span=
 class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 model.=
=C2=A0 If fully conforms to the Network Management Datastore</div><div styl=
e=3D"margin:0px">95<span class=3D"Apple-tab-span" style=3D"white-space:pre"=
>	</span> =C2=A0 Architecture (NDMA) [RFC8342].=C2=A0 A core routing data m=
odel is defined</div><div style=3D"margin:0px">96<span class=3D"Apple-tab-s=
pan" style=3D"white-space:pre">	</span> =C2=A0 in [RFC8349], and it provide=
s the basis for the development of data</div><div style=3D"margin:0px">97<s=
pan class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 mode=
ls for routing protocols.=C2=A0 The interface data model is defined in</div=
><div style=3D"margin:0px">98<span class=3D"Apple-tab-span" style=3D"white-=
space:pre">	</span> =C2=A0 [RFC8343] and is used for referencing interfaces=
 from the routing</div><div style=3D"margin:0px">99<span class=3D"Apple-tab=
-span" style=3D"white-space:pre">	</span> =C2=A0 protocol.=C2=A0 The key-ch=
ain data model used for OSPF authentication is</div><div style=3D"margin:0p=
x">100<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 defined in [RFC8177] and provides both a reference to configured key-</=
div><div style=3D"margin:0px">101<span class=3D"Apple-tab-span" style=3D"wh=
ite-space:pre">	</span> =C2=A0 chains and an enumeration of cryptographic a=
lgorithms.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0p=
x">[nit] s/If fully conforms/It fully conforms</div><div style=3D"margin:0p=
x"><br></div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">=
103<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0=
 Both OSPFv2 [RFC2328] and OSPFv3 [RFC5340] are supported.=C2=A0 In</div><d=
iv style=3D"margin:0px">104<span class=3D"Apple-tab-span" style=3D"white-sp=
ace:pre">	</span> =C2=A0 addition to the core OSPF protocol, features descr=
ibed in other OSPF</div><div style=3D"margin:0px">105<span class=3D"Apple-t=
ab-span" style=3D"white-space:pre">	</span> =C2=A0 RFCs are also supported.=
=C2=A0 These includes demand circuit [RFC1793],</div><div style=3D"margin:0=
px">106<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 traffic engineering [RFC3630], multiple address family [RFC5838],</d=
iv><div style=3D"margin:0px">107<span class=3D"Apple-tab-span" style=3D"whi=
te-space:pre">	</span> =C2=A0 graceful restart [RFC3623] [RFC5187], NSSA [R=
FC3101], and OSPF(v3) as</div><div style=3D"margin:0px">108<span class=3D"A=
pple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 a PE-CE Protocol [=
RFC4577], [RFC6565].=C2=A0 These non-core features are</div><div style=3D"m=
argin:0px">109<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</s=
pan> =C2=A0 optional in the OSPF data model.</div><div style=3D"margin:0px"=
><br></div><div style=3D"margin:0px">[nit] s/OSPF(v3) as a PE-CE Protocol/u=
se as a PE-CE Protocol =C2=A0 =C2=A0Using &quot;OSPF(v3)&quot; is confusing=
 because it is not clear whether OSPFv3-only is meant or both, but v2 is no=
t mentioned...</div><div style=3D"margin:0px"><br></div><div style=3D"margi=
n:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0p=
x">138<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>2.1.=
=C2=A0 OSPF Operational State</div><div style=3D"margin:0px"><br></div><div=
 style=3D"margin:0px">140<span class=3D"Apple-tab-span" style=3D"white-spac=
e:pre">	</span> =C2=A0 The OSPF operational state is included in the same t=
ree as OSPF</div><div style=3D"margin:0px">141<span class=3D"Apple-tab-span=
" style=3D"white-space:pre">	</span> =C2=A0 configuration consistent with N=
etwork Management Datastore</div><div style=3D"margin:0px">142<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 Architecture =
[RFC8342].=C2=A0 Consequently, only the routing container in</div><div styl=
e=3D"margin:0px">143<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 the ietf-routing model [RFC8349] is augmented.=C2=A0 The =
routing-state</div><div style=3D"margin:0px">144<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 container is not augmented.</=
div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[nit] s/c=
onsistent with Network/consistent with the Network</div><div style=3D"margi=
n:0px"><br></div><div style=3D"margin:0px"><br></div><div style=3D"margin:0=
px">146<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>2.2=
.=C2=A0 Overview</div><div style=3D"margin:0px">...</div><div style=3D"marg=
in:0px">154<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span=
> =C2=A0 module: ietf-ospf</div><div style=3D"margin:0px">155<span class=3D=
"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 augment /=
rt:routing/rt:control-plane-protocols/</div><div style=3D"margin:0px">156<s=
pan class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0rt:control-plane-protocol:</div><div =
style=3D"margin:0px">157<span class=3D"Apple-tab-span" style=3D"white-space=
:pre">	</span> =C2=A0 =C2=A0 =C2=A0 +--rw ospf</div><div style=3D"margin:0p=
x">158<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 .</div><div style=3D"margin:0px">159=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 .</div><div style=3D"margin:0px">160<spa=
n class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0+--rw operation-mode? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0identityref</div><div style=3D"margin:0px">161<span class=3D"Apple-tab-s=
pan" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+=
--rw af? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0identityref</div><div style=3D"margin:0px">162<span class=3D"Appl=
e-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 .</div><div style=3D"margin:0px">163<span class=3D"Apple-tab-=
span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 .</div><div style=3D"margin:0px">164<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw =
areas</div><div style=3D"margin:0px">165<span class=3D"Apple-tab-span" styl=
e=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0+-=
-rw area* [area-id]</div><div style=3D"margin:0px">166<span class=3D"Apple-=
tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0| =C2=A0 =C2=A0 +--rw area-id =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 area-id-type</div><div style=3D"margin:0px">167<sp=
an class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0.</div><div style=3D"m=
argin:0px">168<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</s=
pan> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0.</div>=
<div style=3D"margin:0px">169<span class=3D"Apple-tab-span" style=3D"white-=
space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 +--rw=
 virtual-links</div><div style=3D"margin:0px">170<span class=3D"Apple-tab-s=
pan" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=
 =C2=A0 =C2=A0 | =C2=A0+--rw virtual-link* [transit-area-id router-id]</div=
><div style=3D"margin:0px">171<span class=3D"Apple-tab-span" style=3D"white=
-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 | =
=C2=A0 =C2=A0 .</div><div style=3D"margin:0px">172<span class=3D"Apple-tab-=
span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
| =C2=A0 =C2=A0 | =C2=A0 =C2=A0 .</div><div style=3D"margin:0px">173<span c=
lass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 +--rw sham-links {pe-ce-protocol}?</div=
><div style=3D"margin:0px">174<span class=3D"Apple-tab-span" style=3D"white=
-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 | =
=C2=A0+--rw sham-link* [local-id remote-id]</div><div style=3D"margin:0px">=
175<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 | =C2=A0 =C2=A0 .</div><div sty=
le=3D"margin:0px">176<span class=3D"Apple-tab-span" style=3D"white-space:pr=
e">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 | =C2=A0 =C2=
=A0 .</div><div style=3D"margin:0px">177<span class=3D"Apple-tab-span" styl=
e=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =
=C2=A0 +--rw interfaces</div><div style=3D"margin:0px">178<span class=3D"Ap=
ple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw interface* [name]</div><div st=
yle=3D"margin:0px">179<span class=3D"Apple-tab-span" style=3D"white-space:p=
re">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 .</div><div style=3D"margin:0px">180<span class=3D"Apple-tab-spa=
n" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 .</div><div style=3D"margin:0px">181<spa=
n class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0+--rw topologies {multi-topology}?</div><div style=3D"=
margin:0px">182<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</=
span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +--rw topology* [name]</div=
><div style=3D"margin:0px">183<span class=3D"Apple-tab-span" style=3D"white=
-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0.</div><div style=3D"margin:0px">184<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0=
px">186<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 The ospf module is intended to match to the vendor specific OSPF</di=
v><div style=3D"margin:0px">187<span class=3D"Apple-tab-span" style=3D"whit=
e-space:pre">	</span> =C2=A0 configuration construct that is identified by =
the local identifier</div><div style=3D"margin:0px">188<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 &#39;name&#39;.=C2=A0 =
The field &#39;version&#39; allows support for OSPFv2 and OSPFv3.</div><div=
 style=3D"margin:0px"><br></div><div style=3D"margin:0px">[minor] The &#39;=
version&#39; field doesn&#39;t appear in the tree above. =C2=A0=C2=A72.3 sa=
ys the same thing with more details.=C2=A0 Perhaps take the sentence out of=
 this paragraph.</div><div style=3D"margin:0px"><br></div><div style=3D"mar=
gin:0px"><br></div><div style=3D"margin:0px">190<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 The ospf container includes o=
ne OSPF protocol engine instance.=C2=A0 The</div><div style=3D"margin:0px">=
191<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0=
 instance includes OSPF router level configuration and operational</div><di=
v style=3D"margin:0px">192<span class=3D"Apple-tab-span" style=3D"white-spa=
ce:pre">	</span> =C2=A0 state.</div><div style=3D"margin:0px"><br></div><di=
v style=3D"margin:0px">[??] One of the things that is confusing me is the i=
nstance concept in the model.=C2=A0 I understand instances in OSPF, and I s=
ee how the module is organized around instances (&quot;grouping instance-..=
.&quot;), including even per-instance Router-ID.=C2=A0 But I don&#39;t see =
anywhere the definition of an instance-id (except attached to an interface =
(=C2=A72.7) and specific to OSPFv3 (=C2=A73))...if wanting to configure (or=
 read from) a specific instance, how does the client differentiate? =C2=A0[=
YANG is not my thing, so this may be obvious to everyone else.=C2=A0 If it =
is, a quick pointer would be very appreciated.]</div><div style=3D"margin:0=
px"><br></div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"=
>...</div><div style=3D"margin:0px">209<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span>2.4.=C2=A0 Optional Features</div><div style=
=3D"margin:0px">...</div><div style=3D"margin:0px">221<span class=3D"Apple-=
tab-span" style=3D"white-space:pre">	</span> =C2=A0 3. =C2=A0 explicit-rout=
er-id: Support explicit per-instance Router-ID</div><div style=3D"margin:0p=
x">222<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0specification.</div><div style=3D"margin:0px"><br><=
/div><div style=3D"margin:0px">[minor] Is there a reference?=C2=A0 Should t=
he document point to rfc5340/rfc6549 here?</div><div style=3D"margin:0px"><=
br></div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">...<=
/div><div style=3D"margin:0px">234<span class=3D"Apple-tab-span" style=3D"w=
hite-space:pre">	</span> =C2=A0 8. =C2=A0 ttl-security: Support OSPF Time t=
o Live (TTL) security check</div><div style=3D"margin:0px">235<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0suppression [RFC5082].</div><div style=3D"margin:0px"><br></div><div=
 style=3D"margin:0px">[minor] s/suppression/support =C2=A0 =C2=A0Right?</di=
v><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">237<span cl=
ass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 9. =C2=A0 =
nsr: Support OSPF Non-Stop Routing (NSR).</div><div style=3D"margin:0px"><b=
r></div><div style=3D"margin:0px">[minor] Reference?</div><div style=3D"mar=
gin:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:=
0px">242<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 11. =C2=A0admin-control: Support Administrative control of the proto=
col</div><div style=3D"margin:0px">243<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0state.</div><div s=
tyle=3D"margin:0px"><br></div><div style=3D"margin:0px">[minor] This seems =
like a &quot;basic&quot; feature: enabling/disabling the protocol.=C2=A0 Wh=
y was it decided to make it optional?=C2=A0 Are there implementations that =
don&#39;t support enabling/disabling?</div><div style=3D"margin:0px"><br></=
div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div>=
<div style=3D"margin:0px">261<span class=3D"Apple-tab-span" style=3D"white-=
space:pre">	</span> =C2=A0 17. =C2=A0ospfv2-authentication-trailer: Support=
 OSPFv2 Authentication</div><div style=3D"margin:0px">262<span class=3D"App=
le-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0=
trailer as specified in [RFC5709] or [RFC7166].</div><div style=3D"margin:0=
px"><br></div><div style=3D"margin:0px">[minor] s/RFC7166/RFC7474</div><div=
 style=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div><div sty=
le=3D"margin:0px">267<span class=3D"Apple-tab-span" style=3D"white-space:pr=
e">	</span> =C2=A0 19. =C2=A0ospfv3-authentication-trailer: Support OSPFv3 =
Authentication</div><div style=3D"margin:0px">268<span class=3D"Apple-tab-s=
pan" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0trailer =
as specified in [RFC7474].</div><div style=3D"margin:0px"><br></div><div st=
yle=3D"margin:0px">[minor] s/RFC7474/RFC7166</div><div style=3D"margin:0px"=
><br></div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">..=
.</div><div style=3D"margin:0px">300<span class=3D"Apple-tab-span" style=3D=
"white-space:pre">	</span>2.5.=C2=A0 OSPF Router Configuration/Operational =
State</div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">308=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 mo=
dule: ietf-ospf</div><div style=3D"margin:0px">...</div><div style=3D"margi=
n:0px">336<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw enable? =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 boolean {admin-control}?</div><div style=3D"margin=
:0px"><br></div><div style=3D"margin:0px">[nit] Perhaps the admin-control s=
hould be moved closer to the start of this branch so it is clear what is be=
ing enabled/disabled.</div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"=
margin:0px">464<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</=
span>2.6.=C2=A0 OSPF Area Configuration/Operational State</div><div style=
=3D"margin:0px">...</div><div style=3D"margin:0px">570<span class=3D"Apple-=
tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0| =C2=A0 =C2=A0 | =C2=A0 =C2=A0 +--rw hello-interval? =C2=A0 =C2=A0 =
=C2=A0 uint16</div><div style=3D"margin:0px">571<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =
=C2=A0 =C2=A0 | =C2=A0 =C2=A0 +--rw dead-interval? =C2=A0 =C2=A0 =C2=A0 =C2=
=A0uint32</div><div style=3D"margin:0px">572<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| =C2=
=A0 =C2=A0 | =C2=A0 =C2=A0 +--rw retransmit-interval? =C2=A0uint16</div><di=
v style=3D"margin:0px"><br></div><div style=3D"margin:0px">[minor] Why aren=
&#39;t rt-types:timer-value-* used for the *-timer/interval definitions?=C2=
=A0 I would have thought this was exactly the reason for the definitions in=
 rfc8294.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px=
"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">10=
54<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>2.9.=C2=
=A0 OSPF RPC Operations</div><div style=3D"margin:0px">...</div><div style=
=3D"margin:0px">1061<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 o =C2=A0clear-neighbor: restart a particular set of OSPF =
neighbor.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px=
">[minor] Should the description be something like: &quot;reset a set of OS=
PF neighbors on a particular interface&quot;?</div><div style=3D"margin:0px=
"><br></div><div style=3D"margin:0px">1063<span class=3D"Apple-tab-span" st=
yle=3D"white-space:pre">	</span> =C2=A0 =C2=A0 rpcs:</div><div style=3D"mar=
gin:0px">1064<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</sp=
an> =C2=A0 =C2=A0 =C2=A0 +---x clear-neighbor</div><div style=3D"margin:0px=
">1065<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 | =C2=A0+---w input</div><div style=3D"margin:0px">1066<s=
pan class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=
=A0 =C2=A0 | =C2=A0 =C2=A0 +---w routing-protocol-name</div><div style=3D"m=
argin:0px">1067<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</=
span> =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 + =C2=A0 =C2=A0 -&gt; /rt:routin=
g/control-plane-protocols/</div><div style=3D"margin:0px">1068<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 | =C2=A0 =C2=A0 + =C2=A0 =C2=A0 =C2=A0 =C2=A0 control-plane-protocol/name<=
/div><div style=3D"margin:0px">1069<span class=3D"Apple-tab-span" style=3D"=
white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 | =C2=A0 =C2=A0 +---w interf=
ace? =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 if:interface-ref</div=
><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></div><d=
iv style=3D"margin:0px">...</div><div style=3D"margin:0px">1076<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span>3.=C2=A0 OSPF YANG Mo=
dule</div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">1143=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0Editor: =C2=A0 Derek Yeung</div><div style=3D"margin:0p=
x">1144<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;mailto:<a=
 href=3D"mailto:derek@arrcus.com">derek@arrcus.com</a>&gt;</div><div style=
=3D"margin:0px">1145<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0Author: =C2=A0 Acee Lindem</div><div =
style=3D"margin:0px">1146<span class=3D"Apple-tab-span" style=3D"white-spac=
e:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0&lt;mailto:<a href=3D"mailto:acee@cisco.com">acee@cisco.com</a>&gt;</div=
><div style=3D"margin:0px">1147<span class=3D"Apple-tab-span" style=3D"whit=
e-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0Author: =C2=A0 Yingzhen Qu=
</div><div style=3D"margin:0px">1148<span class=3D"Apple-tab-span" style=3D=
"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0&lt;mailto:<a href=3D"mailto:yingzhen.qu@huawei.com">yingzhen=
.qu@huawei.com</a>&gt;</div><div style=3D"margin:0px">1149<span class=3D"Ap=
ple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0Author: =C2=A0 Jeffrey Zhang</div><div style=3D"margin:0px">1150<span cl=
ass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;mailto:<a href=3D"mailto:z=
zhang@juniper.net">zzhang@juniper.net</a>&gt;</div><div style=3D"margin:0px=
">1151<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0Author: =C2=A0 Ing-Wher Chen</div><div style=3D"mar=
gin:0px">1152<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</sp=
an> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;mailt=
o:<a href=3D"mailto:ingwherchen@mitre.org">ingwherchen@mitre.org</a>&gt;</d=
iv><div style=3D"margin:0px">1153<span class=3D"Apple-tab-span" style=3D"wh=
ite-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0Author: =C2=A0 Dean Bogd=
anovic</div><div style=3D"margin:0px">1154<span class=3D"Apple-tab-span" st=
yle=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0&lt;mailto:<a href=3D"mailto:ivandean@gmail.com">ivande=
an@gmail.com</a>&gt;</div><div style=3D"margin:0px">1155<span class=3D"Appl=
e-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0A=
uthor: =C2=A0 Kiran Agrahara Sreenivasa</div><div style=3D"margin:0px">1156=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;mailto:<a href=
=3D"mailto:kk@employees.org">kk@employees.org</a>&quot;;</div><div style=3D=
"margin:0px"><br></div><div style=3D"margin:0px">[minor] This list is not t=
he same as what is in the front page of this document.</div><div style=3D"m=
argin:0px"><br></div><div style=3D"margin:0px"><br></div><div style=3D"marg=
in:0px">...</div><div style=3D"margin:0px">1685<span class=3D"Apple-tab-spa=
n" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 typedef if-state-type {=
</div><div style=3D"margin:0px">1686<span class=3D"Apple-tab-span" style=3D=
"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 type enumeration {</div><di=
v style=3D"margin:0px">...</div><div style=3D"margin:0px">1712<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 enum backup {</div><div style=3D"margin:0px">1713<span class=3D"App=
le-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 value &quot;6&quot;;</div><div style=3D"margin:0px">1714<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 description</div><div style=3D"margin:0px">1715<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 &quot;Interface Backup Designated Router (BDR) state.=
&quot;;</div><div style=3D"margin:0px">1716<span class=3D"Apple-tab-span" s=
tyle=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div s=
tyle=3D"margin:0px"><br></div><div style=3D"margin:0px">[nit] s/backup/bdr =
=C2=A0 To match the other instances where a BDR is referenced.</div><div st=
yle=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px">...</div><div style=3D"margin:0px">2729<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 containe=
r network {</div><div style=3D"margin:0px">2730<span class=3D"Apple-tab-spa=
n" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 when &quo=
t;derived-from-or-self(../../header/type, &quot;</div><div style=3D"margin:=
0px">2731<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+ &quot;&#39;ospfv3-network-lsa&#3=
9;)&quot; {</div><div style=3D"margin:0px">2732<span class=3D"Apple-tab-spa=
n" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 de=
scription</div><div style=3D"margin:0px">2733<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 &quot;Only applies to Network LSAs.&quot;;</div><div style=3D"margin:0p=
x">2734<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px">2735<span clas=
s=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 description &quot;Network LSA.&quot;;</div><div style=3D"margin:=
0px"><br></div><div style=3D"margin:0px">[nit] Perhaps network-lsa could be=
 a better name.</div><div style=3D"margin:0px"><br></div><div style=3D"marg=
in:0px"><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0=
px">3053<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 grouping lsa-common {</div><div style=3D"margin:0px">3054<spa=
n class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0=
 =C2=A0 description</div><div style=3D"margin:0px">3055<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 &quot;Common fields for OSPF LSA representation.&quot;;</div><div st=
yle=3D"margin:0px">3056<span class=3D"Apple-tab-span" style=3D"white-space:=
pre">	</span> =C2=A0 =C2=A0 =C2=A0 leaf decoded-completed {</div><div style=
=3D"margin:0px">3057<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 type boolean;</div><div style=3D"mar=
gin:0px">3058<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</sp=
an> =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</div><div style=3D"margin:0px">=
3059<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;The OSPF LSA body is fully decoded.&q=
uot;;</div><div style=3D"margin:0px">3060<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"m=
argin:0px"><br></div><div style=3D"margin:0px">[minor] What is decoded-comp=
leted indicating?=C2=A0 Does it indicate that no errors where found, IOW, &=
quot;successful decoding&quot;?=C2=A0 Does it mean that the LSA has been de=
coded (but not an indication of success, or not)?=C2=A0 Is it a time-based =
indication; IOW, is there a chance that an LSA has not been processed when =
retrieving the information...would that result in false??</div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></div><div style=3D=
"margin:0px">...</div><div style=3D"margin:0px">3271<span class=3D"Apple-ta=
b-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 grouping instance-=
fast-reroute-state {</div><div style=3D"margin:0px">3272<span class=3D"Appl=
e-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 descrip=
tion &quot;IPFRR state data grouping&quot;;</div><div style=3D"margin:0px">=
<br></div><div style=3D"margin:0px">[nit] s/IPFRR/IP-FRR =C2=A0 That is how=
 the term is used everywhere else in this document.</div><div style=3D"marg=
in:0px"><br></div><div style=3D"margin:0px"><br></div><div style=3D"margin:=
0px">...</div><div style=3D"margin:0px">3541<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 leaf hello-interval=
 {</div><div style=3D"margin:0px">3542<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 type uint16 {</di=
v><div style=3D"margin:0px">3543<span class=3D"Apple-tab-span" style=3D"whi=
te-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 range &quot;1..65=
535&quot;;</div><div style=3D"margin:0px">3544<span class=3D"Apple-tab-span=
" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><di=
v style=3D"margin:0px">3545<span class=3D"Apple-tab-span" style=3D"white-sp=
ace:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</div><div style=
=3D"margin:0px">3546<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Interval between hello =
packets (seconds). It must</div><div style=3D"margin:0px">3547<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0be the same for all routers on the same network.</div>=
<div style=3D"margin:0px">3548<span class=3D"Apple-tab-span" style=3D"white=
-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Different net=
works, implementations, and deployments</div><div style=3D"margin:0px">3549=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0will use different hello-intervals. A sam=
ple value</div><div style=3D"margin:0px">3550<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0for a LAN network would be 10 seconds.&quot;;</div><div style=3D"margin:=
0px">3551<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px">[minor] Some implementations support having a sub-second he=
llo-interval...but with a timer in seconds that can&#39;t be done.</div><di=
v style=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></div><div s=
tyle=3D"margin:0px">...</div><div style=3D"margin:0px">3664<span class=3D"A=
pple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf ospfv2-key {</div><div style=3D"margin=
:0px">3665<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type string=
;</div><div style=3D"margin:0px">3666<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 description</div><div style=3D"margin:0px">3667<span clas=
s=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;OSPFv2 authentic=
ation key. The</div><div style=3D"margin:0px">3668<span class=3D"Apple-tab-=
span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0length of the key may be dependen=
t on the</div><div style=3D"margin:0px">3669<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0cryptographic algorithm. In cases whe=
re it is</div><div style=3D"margin:0px">3670<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0not, a key length of at least 32 octe=
ts should</div><div style=3D"margin:0px">3671<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0be supported to allow for interoperab=
ility</div><div style=3D"margin:0px">3672<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0with strong keys.&quot;;</div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px">[major] Is there a refe=
rence for the part about the &quot;key length of at least 32 octets should =
be supported to allow for interoperability with strong keys&quot;?</div><di=
v style=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></div><div s=
tyle=3D"margin:0px">...</div><div style=3D"margin:0px">3719<span class=3D"A=
pple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf ospfv3-key {</div><div style=3D"margin=
:0px">3720<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type string=
;</div><div style=3D"margin:0px">3721<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 description</div><div style=3D"margin:0px">3722<span clas=
s=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;OSPFv2 authentic=
ation key. The</div><div style=3D"margin:0px">3723<span class=3D"Apple-tab-=
span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0length of the key may be dependen=
t on the</div><div style=3D"margin:0px">3724<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0cryptographic algorithm. In cases whe=
re it is</div><div style=3D"margin:0px">3725<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0not, a key length of at least 32 octe=
ts should</div><div style=3D"margin:0px">3726<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0be supported to allow for interoperab=
ility</div><div style=3D"margin:0px">3727<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0with strong keys.&quot;;</div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px">[major] The same commen=
t from ospfv2-key applies here.</div><div style=3D"margin:0px"><br></div><d=
iv style=3D"margin:0px">[nit] s/OSPFv2 authentication key/OSPFv3 authentica=
tion key</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"=
><br></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">385=
6<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf priority {</div><div style=3D"margin:0px">=
3857<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type uint8 {</div><div style=3D"marg=
in:0px">3858<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 range &quot;1..255&quot=
;;</div><div style=3D"margin:0px">3859<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</=
div><div style=3D"margin:0px">3860<span class=3D"Apple-tab-span" style=3D"w=
hite-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 descript=
ion &quot;Neighbor priority for DR election.&quot;;</div><div style=3D"marg=
in:0px">3861<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</spa=
n> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:0px"><br>=
</div><div style=3D"margin:0px">[minor] A range is included in this definit=
ion, but not in other priority statements before...should a range be includ=
ed in those other definitions?</div><div style=3D"margin:0px"><br></div><di=
v style=3D"margin:0px">[minor] Why is 0 not applicable here?</div><div styl=
e=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px">...</div><div style=3D"margin:0px">3936<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 leaf dea=
d-timer {</div><div style=3D"margin:0px">3937<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 type uint32=
;</div><div style=3D"margin:0px">3938<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 units &quot;secon=
ds&quot;;</div><div style=3D"margin:0px">3939<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 config fals=
e;</div><div style=3D"margin:0px">3940<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quot=
;This timer tracks the remaining time before</div><div style=3D"margin:0px"=
>3941<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0th=
e neighbor is declared dead.&quot;;</div><div style=3D"margin:0px">3942<spa=
n class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0=
 =C2=A0 }</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px=
">[major] For *-timer: Is tracking the remaining time in seconds enough?=C2=
=A0 I would assume that ms would be the right unit.=C2=A0 Why seconds?</div=
><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></div><d=
iv style=3D"margin:0px">...</div><div style=3D"margin:0px">4390<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 container preference {</div><div style=3D"margin:0px">4391<span class=3D"A=
pple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 description &quot;Route preference config state.&quot;;</div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px">[minor] Maybe it&#39;s =
just me, but I don&#39;t understand what this piece of the model does.=C2=
=A0 It seems like it can be used to configure which type of route is prefer=
red: external over intra-area, for example...but that doens&#39;t make too =
much sense to me.=C2=A0 Is that the intended use?=C2=A0 Can you please give=
 me an example of when this functionality could be used?</div><div style=3D=
"margin:0px"><br></div><div style=3D"margin:0px">4392<span class=3D"Apple-t=
ab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 cho=
ice scope {</div><div style=3D"margin:0px">4393<span class=3D"Apple-tab-spa=
n" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 de=
scription</div><div style=3D"margin:0px">4394<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 &quot;Options for expressing preference</div><div style=3D"margin:0px">=
4395<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0as single or multiple values.&=
quot;;</div><div style=3D"margin:0px">4396<span class=3D"Apple-tab-span" st=
yle=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case si=
ngle-value {</div><div style=3D"margin:0px">4397<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 leaf all {</div><div style=3D"margin:0px">4398<span class=3D"Apple-t=
ab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 type uint8;</div><div style=3D"margin:0px">4399<span clas=
s=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</div><div style=3D"margin:0px">=
4400<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Preference for i=
ntra-area, inter-area, and</div><div style=3D"margin:0px">4401<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0external routes.&quot;;</div><div=
 style=3D"margin:0px">4402<span class=3D"Apple-tab-span" style=3D"white-spa=
ce:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div styl=
e=3D"margin:0px">4403<span class=3D"Apple-tab-span" style=3D"white-space:pr=
e">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"margin:=
0px">4404<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case multi-values {</div><div style=3D"m=
argin:0px">4405<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</=
span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 choice granularity {</div><=
div style=3D"margin:0px">4406<span class=3D"Apple-tab-span" style=3D"white-=
space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 descri=
ption</div><div style=3D"margin:0px">4407<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 &quot;Options for expressing preference</div><div style=3D"ma=
rgin:0px">4408<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</s=
pan> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0for intr=
a-area and inter-area routes.&quot;;</div><div style=3D"margin:0px">4409<sp=
an class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case detail {</div><div style=3D"mar=
gin:0px">4410<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</sp=
an> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf intra-area=
 {</div><div style=3D"margin:0px">4411<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 type uint8;</div><div style=3D"margin:0px">4412<span clas=
s=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</div><div style=
=3D"margin:0px">4413<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 &quot;Preference for intra-area routes.&quot;;</div><div style=3D"ma=
rgin:0px">4414<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</s=
pan> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div st=
yle=3D"margin:0px">4415<span class=3D"Apple-tab-span" style=3D"white-space:=
pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf =
inter-area {</div><div style=3D"margin:0px">4416<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 type uint8;</div><div style=3D"margin:0px">4417=
<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</div><d=
iv style=3D"margin:0px">4418<span class=3D"Apple-tab-span" style=3D"white-s=
pace:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 &quot;Preference for inter-area routes.&quot;;</div><div styl=
e=3D"margin:0px">4419<span class=3D"Apple-tab-span" style=3D"white-space:pr=
e">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div>=
<div style=3D"margin:0px">4420<span class=3D"Apple-tab-span" style=3D"white=
-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</di=
v><div style=3D"margin:0px">4421<span class=3D"Apple-tab-span" style=3D"whi=
te-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 cas=
e coarse {</div><div style=3D"margin:0px">4422<span class=3D"Apple-tab-span=
" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 leaf internal {</div><div style=3D"margin:0px">4423<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type uint8;</div><div styl=
e=3D"margin:0px">4424<span class=3D"Apple-tab-span" style=3D"white-space:pr=
e">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
description</div><div style=3D"margin:0px">4425<span class=3D"Apple-tab-spa=
n" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Preference for both intra-area and=
</div><div style=3D"margin:0px">4426<span class=3D"Apple-tab-span" style=3D=
"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0inter-area routes.&quot;;</div><div style=3D"ma=
rgin:0px">4427<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</s=
pan> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div st=
yle=3D"margin:0px">4428<span class=3D"Apple-tab-span" style=3D"white-space:=
pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div =
style=3D"margin:0px">4429<span class=3D"Apple-tab-span" style=3D"white-spac=
e:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=
=3D"margin:0px">4430<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf external {</div><=
div style=3D"margin:0px">4431<span class=3D"Apple-tab-span" style=3D"white-=
space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type u=
int8;</div><div style=3D"margin:0px">4432<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 description</div><div style=3D"margin:0px">4433<span class=3D"Apple-=
tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Preference for AS external routes.&quot;;=
</div><div style=3D"margin:0px">4434<span class=3D"Apple-tab-span" style=3D=
"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div=
><div style=3D"margin:0px">4435<span class=3D"Apple-tab-span" style=3D"whit=
e-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</div><div style=
=3D"margin:0px"><br></div><div style=3D"margin:0px">4437<span class=3D"Appl=
e-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
}</div><div style=3D"margin:0px">4438<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 }</div><div style=3D"mar=
gin:0px"><br></div><div style=3D"margin:0px"><br></div><div style=3D"margin=
:0px">...</div><div style=3D"margin:0px">4551<span class=3D"Apple-tab-span"=
 style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 container stub-rou=
ter {</div><div style=3D"margin:0px">4552<span class=3D"Apple-tab-span" sty=
le=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 if-feature stub=
-router;</div><div style=3D"margin:0px">4553<span class=3D"Apple-tab-span" =
style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 description =
&quot;Set maximum metric configuration&quot;;</div><div style=3D"margin:0px=
"><br></div><div style=3D"margin:0px">4555<span class=3D"Apple-tab-span" st=
yle=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 choice trigger=
 {</div><div style=3D"margin:0px">4556<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 descriptio=
n</div><div style=3D"margin:0px">4557<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &qu=
ot;Specific triggers which will enable stub</div><div style=3D"margin:0px">=
4558<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0router state.&quot;;</div><div=
 style=3D"margin:0px">4559<span class=3D"Apple-tab-span" style=3D"white-spa=
ce:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 container always {</div=
><div style=3D"margin:0px">4560<span class=3D"Apple-tab-span" style=3D"whit=
e-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 presence</d=
iv><div style=3D"margin:0px">4561<span class=3D"Apple-tab-span" style=3D"wh=
ite-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &q=
uot;Enables unconditional stub router support&quot;;</div><div style=3D"mar=
gin:0px">4562<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</sp=
an> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</div><div style=
=3D"margin:0px">4563<span class=3D"Apple-tab-span" style=3D"white-space:pre=
">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Unconditi=
onal stub router state (advertise</div><div style=3D"margin:0px">4564<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0transit links with max metric&quot=
;;</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px">[mino=
r] s//MaxLinkMetric [rfc6897]</div><div style=3D"margin:0px"><br></div><div=
 style=3D"margin:0px"><br></div><div style=3D"margin:0px">...</div><div sty=
le=3D"margin:0px">5537<span class=3D"Apple-tab-span" style=3D"white-space:p=
re">	</span>4.=C2=A0 Security Considerations</div><div style=3D"margin:0px"=
>...</div><div style=3D"margin:0px">5552<span class=3D"Apple-tab-span" styl=
e=3D"white-space:pre">	</span> =C2=A0 There are a number of data nodes defi=
ned in ietf-ospf.yang module</div><div style=3D"margin:0px">5553<span class=
=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 that are writ=
able/creatable/deletable (i.e., config true, which is</div><div style=3D"ma=
rgin:0px">5554<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</s=
pan> =C2=A0 the default).=C2=A0 These data nodes may be considered sensitiv=
e or</div><div style=3D"margin:0px">5555<span class=3D"Apple-tab-span" styl=
e=3D"white-space:pre">	</span> =C2=A0 vulnerable in some network environmen=
ts.=C2=A0 Write operations (e.g.,</div><div style=3D"margin:0px">5556<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 edit-con=
fig) to these data nodes without proper protection can have a</div><div sty=
le=3D"margin:0px">5557<span class=3D"Apple-tab-span" style=3D"white-space:p=
re">	</span> =C2=A0 negative effect on network operations.=C2=A0 For OSPF, =
the ability to</div><div style=3D"margin:0px">5558<span class=3D"Apple-tab-=
span" style=3D"white-space:pre">	</span> =C2=A0 modify OSPF configuration w=
ill allow the entire OSPF domain to be</div><div style=3D"margin:0px">5559<=
span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 com=
promised including peering with unauthorized routers to misroute</div><div =
style=3D"margin:0px">5560<span class=3D"Apple-tab-span" style=3D"white-spac=
e:pre">	</span> =C2=A0 traffic or mount a massive Denial-of-Service (DoS) a=
ttack.=C2=A0 The</div><div style=3D"margin:0px">5561<span class=3D"Apple-ta=
b-span" style=3D"white-space:pre">	</span> =C2=A0 security considerations o=
f OSPFv2 [RFC2328] and [RFC5340] apply to</div><div style=3D"margin:0px">55=
62<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
the ietf-ospf.yang module as well.</div><div style=3D"margin:0px"><br></div=
><div style=3D"margin:0px">[minor] s/OSPFv2 [RFC2328] and [RFC5340]/OSPFv2 =
[RFC2328] and OSPFv3 [RFC5340]</div><div style=3D"margin:0px"><br></div><di=
v style=3D"margin:0px">[major] How do the &quot;security considerations of =
OSPFv2 [RFC2328] and [RFC5340] apply to the ietf-ospf.yang module&quot;? =
=C2=A0rfc2328/rfc5340 only talk about authentication of the protocol exchan=
ge...</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"><b=
r></div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">5626<s=
pan class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>7.1.=C2=A0 N=
ormative References</div><div style=3D"margin:0px">...</div><div style=3D"m=
argin:0px">5679<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</=
span> =C2=A0 [RFC4750] =C2=A0Joyal, D., Ed., Galecki, P., Ed., Giacalone, S=
., Ed.,</div><div style=3D"margin:0px">5680<span class=3D"Apple-tab-span" s=
tyle=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0Coltun, R., and F. Baker, &quot;OSPF Version 2 Management</div><div =
style=3D"margin:0px">5681<span class=3D"Apple-tab-span" style=3D"white-spac=
e:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Information=
 Base&quot;, RFC 4750, DOI 10.17487/RFC4750,</div><div style=3D"margin:0px"=
>5682<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0December 2006, &lt;<a href=3D"=
https://www.rfc-editor.org/info/rfc4750">https://www.rfc-editor.org/info/rf=
c4750</a>&gt;.</div><div style=3D"margin:0px">...</div><div style=3D"margin=
:0px">5731<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>=
 =C2=A0 [RFC5643] =C2=A0Joyal, D., Ed. and V. Manral, Ed., &quot;Management=
 Information</div><div style=3D"margin:0px">5732<span class=3D"Apple-tab-sp=
an" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0Base for OSPFv3&quot;, RFC 5643, DOI 10.17487/RFC5643, August<=
/div><div style=3D"margin:0px">5733<span class=3D"Apple-tab-span" style=3D"=
white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A02=
009, &lt;<a href=3D"https://www.rfc-editor.org/info/rfc5643">https://www.rf=
c-editor.org/info/rfc5643</a>&gt;.</div><div style=3D"margin:0px">...</div>=
<div style=3D"margin:0px">5745<span class=3D"Apple-tab-span" style=3D"white=
-space:pre">	</span> =C2=A0 [RFC5880] =C2=A0Katz, D. and D. Ward, &quot;Bid=
irectional Forwarding Detection</div><div style=3D"margin:0px">5746<span cl=
ass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0(BFD)&quot;, RFC 5880, DOI 10.17487/RFC5880,=
 June 2010,</div><div style=3D"margin:0px">5747<span class=3D"Apple-tab-spa=
n" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0&lt;<a href=3D"https://www.rfc-editor.org/info/rfc5880">https:=
//www.rfc-editor.org/info/rfc5880</a>&gt;.</div><div style=3D"margin:0px"><=
br></div><div style=3D"margin:0px">5749<span class=3D"Apple-tab-span" style=
=3D"white-space:pre">	</span> =C2=A0 [RFC5881] =C2=A0Katz, D. and D. Ward, =
&quot;Bidirectional Forwarding Detection</div><div style=3D"margin:0px">575=
0<span class=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0(BFD) for IPv4 and IPv6 (Single Ho=
p)&quot;, RFC 5881,</div><div style=3D"margin:0px">5751<span class=3D"Apple=
-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0DOI 10.17487/RFC5881, June 2010, &lt;<a href=3D"https:/=
/www.rfc-">https://www.rfc-</a></div><div style=3D"margin:0px">5752<span cl=
ass=3D"Apple-tab-span" style=3D"white-space:pre">	</span> =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"http://editor.org/info/rfc5881">e=
ditor.org/info/rfc5881</a>&gt;.</div><div style=3D"margin:0px"><br></div><d=
iv style=3D"margin:0px">[minor] I think these references can be Informative=
.</div><div style=3D"margin:0px"><br></div><div style=3D"margin:0px"><br></=
div><div style=3D"margin:0px">...</div><div style=3D"margin:0px">5880<span =
class=3D"Apple-tab-span" style=3D"white-space:pre">	</span>7.2.=C2=A0 Infor=
mative References</div><div style=3D"margin:0px"><br></div><div style=3D"ma=
rgin:0px">[major] All the references in this section (except maybe rfc905) =
point at functionality in the model...as the references above, these should=
 be Normative as well.</div><div style=3D"margin:0px"><br></div><div style=
=3D"margin:0px">These documents are already in the Downref registry: rfc530=
9, rfc5443, rfc5714, rfc6987.</div><div style=3D"margin:0px"><br></div><div=
 style=3D"margin:0px">The others are not, but I don&#39;t expect any issues=
 in the IETF Last Call.</div><div style=3D"font-family:Helvetica,Arial;font=
-size:13px"><br></div></div><div class=3D"bloop_container"><div class=3D"bl=
oop_frame">  </div></div><br><div class=3D"gmail_signature"></div></body></=
html>

--00000000000069e934058a9b165d--


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Cc: The IESG <iesg@ietf.org>, draft-ietf-isis-segment-routing-extensions@ietf.org, Uma Chunduri <uma.chunduri@huawei.com>, uma.chunduri@huawei.com, aretana.ietf@gmail.com, Christian Hopps <chopps@chopps.org>, lsr-chairs@ietf.org, lsr@ietf.org, rfc-editor@rfc-editor.org
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Subject: [Lsr] Protocol Action: 'IS-IS Extensions for Segment Routing' to Proposed Standard (draft-ietf-isis-segment-routing-extensions-25.txt)
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The IESG has approved the following document:
- 'IS-IS Extensions for Segment Routing'
  (draft-ietf-isis-segment-routing-extensions-25.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-isis-segment-routing-extensions/





Technical Summary

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

Working Group Summary

   This draft has been thoroughly discussed in the WG at various stages of 
   the document progression.  The draft adoption and progress has received 
   full support from the WG.

Document Quality

   The proposed extensions have been implemented by 4 vendors-os/implementations.
   Some of the interoperability details are publicly available from EANTC.

Personnel

   Uma Chunduri is the Document Shepherd.
   Alvaro Retana is the Responsible Area Director.


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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/Yl7MVlJ9atDs97f5h5TsJXgbZxM>
Subject: Re: [Lsr] I-D Action: draft-ietf-isis-yang-isis-cfg-35.txt
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Stephane

The YANG module has RFC5307 in a description clause but I do not see
this in the References of the I-D

I commented before on the lack of  a conditional when on
     augment "/if:interfaces/if:interface"
so every interface will get this object; is that intended?

In the example, is the system-id one reserved for documentation?

Tom Petch

----- Original Message -----
From: <internet-drafts@ietf.org>
To: <i-d-announce@ietf.org>
Cc: <lsr@ietf.org>
Sent: Friday, March 08, 2019 3:37 AM
Subject: I-D Action: draft-ietf-isis-yang-isis-cfg-35.txt


>
> 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           : YANG Data Model for IS-IS Protocol
>         Authors         : Stephane Litkowski
>                           Derek Yeung
>                           Acee Lindem
>                           Jeffrey Zhang
>                           Ladislav Lhotka
> Filename        : draft-ietf-isis-yang-isis-cfg-35.txt
> Pages           : 111
> Date            : 2019-03-07
>
> Abstract:
>    This document defines a YANG data model that can be used to
configure
>    and manage IS-IS protocol on network elements.
>
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-isis-yang-isis-cfg/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-isis-yang-isis-cfg-35
> https://datatracker.ietf.org/doc/html/draft-ietf-isis-yang-isis-cfg-35
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-isis-yang-isis-cfg-35
>
>
> 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/
>
> _______________________________________________
> I-D-Announce mailing list
> I-D-Announce@ietf.org
> https://www.ietf.org/mailman/listinfo/i-d-announce
> Internet-Draft directories: http://www.ietf.org/shadow.html
> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt


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From: <stephane.litkowski@orange.com>
To: tom petch <ietfc@btconnect.com>
CC: "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: I-D Action: draft-ietf-isis-yang-isis-cfg-35.txt
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Subject: Re: [Lsr] I-D Action: draft-ietf-isis-yang-isis-cfg-35.txt
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Hi Tom,

Thanks for your feedback.
Pls find some comments inline

Stephane

-----Original Message-----
From: tom petch [mailto:ietfc@btconnect.com]=20
Sent: Thursday, June 06, 2019 18:59
To: LITKOWSKI Stephane OBS/OINIS
Cc: lsr@ietf.org
Subject: Re: I-D Action: draft-ietf-isis-yang-isis-cfg-35.txt

Stephane

The YANG module has RFC5307 in a description clause but I do not see
this in the References of the I-D

[SLI] That's a mistake, I will fix it


I commented before on the lack of  a conditional when on
     augment "/if:interfaces/if:interface"
so every interface will get this object; is that intended?

[SLI] It looks good to me, if a device supports the ISIS model, all the int=
erfaces should get the clns-mtu config statement.

In the example, is the system-id one reserved for documentation?
[SLI] No, but I'm personally not aware of system IDs reserved for documenta=
tion as we could have for IP addresses. If someone from the WG knows about =
it, I will be happy to change it.



Tom Petch

----- Original Message -----
From: <internet-drafts@ietf.org>
To: <i-d-announce@ietf.org>
Cc: <lsr@ietf.org>
Sent: Friday, March 08, 2019 3:37 AM
Subject: I-D Action: draft-ietf-isis-yang-isis-cfg-35.txt


>
> 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           : YANG Data Model for IS-IS Protocol
>         Authors         : Stephane Litkowski
>                           Derek Yeung
>                           Acee Lindem
>                           Jeffrey Zhang
>                           Ladislav Lhotka
> Filename        : draft-ietf-isis-yang-isis-cfg-35.txt
> Pages           : 111
> Date            : 2019-03-07
>
> Abstract:
>    This document defines a YANG data model that can be used to
configure
>    and manage IS-IS protocol on network elements.
>
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-isis-yang-isis-cfg/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-isis-yang-isis-cfg-35
> https://datatracker.ietf.org/doc/html/draft-ietf-isis-yang-isis-cfg-35
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-isis-yang-isis-cfg-35
>
>
> 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/
>
> _______________________________________________
> I-D-Announce mailing list
> I-D-Announce@ietf.org
> https://www.ietf.org/mailman/listinfo/i-d-announce
> Internet-Draft directories: http://www.ietf.org/shadow.html
> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt


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From: tom petch <ietfc@btconnect.com>
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Subject: Re: [Lsr] I-D Action: draft-ietf-isis-yang-isis-cfg-35.txt
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<inline>

---- Original Message -----
From: <stephane.litkowski@orange.com>
Sent: Friday, June 07, 2019 9:03 AM

Hi Tom,

Thanks for your feedback.
Pls find some comments inline

Stephane

-----Original Message-----
From: tom petch [mailto:ietfc@btconnect.com]
Sent: Thursday, June 06, 2019 18:59

Stephane

The YANG module has RFC5307 in a description clause but I do not see
this in the References of the I-D

[SLI] That's a mistake, I will fix it


I commented before on the lack of  a conditional when on
     augment "/if:interfaces/if:interface"
so every interface will get this object; is that intended?

[SLI] It looks good to me, if a device supports the ISIS model, all the
interfaces should get the clns-mtu config statement.

<tp>

Well, yes, the server will understand what the definition is but a user
might be surprised to find the object present on an ospf passive
interface or a LAN interface running RIP - I do not see that as a big
problem but thought I would ask.

In the example, is the system-id one reserved for documentation?
[SLI] No, but I'm personally not aware of system IDs reserved for
documentation as we could have for IP addresses. If someone from the WG
knows about it, I will be happy to change it.

<tp>
I did look and there are identifiers reserved for documenation for all
sorts of things but not AFAICT for system-id; I wondered if there was
any convention in the ISO documents.  I am twitchy about using
potentially real identifiers in documentation ever since I encountered
an organisation which had to renumber everything because the engineer
who had set up the organisation's network had been on a course to learn
how to do it, the course has used real addresses and the engineer had
then used these real addresses for his organisation's network thinking
that that was what everyone had to do - oh dear.

Tom Petch

----- Original Message -----
From: <internet-drafts@ietf.org>
To: <i-d-announce@ietf.org>
Cc: <lsr@ietf.org>
Sent: Friday, March 08, 2019 3:37 AM
Subject: I-D Action: draft-ietf-isis-yang-isis-cfg-35.txt


>
> 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           : YANG Data Model for IS-IS Protocol
>         Authors         : Stephane Litkowski
>                           Derek Yeung
>                           Acee Lindem
>                           Jeffrey Zhang
>                           Ladislav Lhotka
> Filename        : draft-ietf-isis-yang-isis-cfg-35.txt
> Pages           : 111
> Date            : 2019-03-07
>
> Abstract:
>    This document defines a YANG data model that can be used to
configure
>    and manage IS-IS protocol on network elements.
>
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-isis-yang-isis-cfg/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-ietf-isis-yang-isis-cfg-35
> https://datatracker.ietf.org/doc/html/draft-ietf-isis-yang-isis-cfg-35
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-isis-yang-isis-cfg-35
>
>
> 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/
>
> _______________________________________________
> I-D-Announce mailing list
> I-D-Announce@ietf.org
> https://www.ietf.org/mailman/listinfo/i-d-announce
> Internet-Draft directories: http://www.ietf.org/shadow.html
> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt


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To: "Acee Lindem (acee)" <acee@cisco.com>, "stephane.litkowski@orange.com" <stephane.litkowski@orange.com>, tom petch <ietfc@btconnect.com>
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From: Xufeng Liu <xufeng.liu.ietf@gmail.com>
Date: Sun, 9 Jun 2019 10:35:11 -0400
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To: lsr@ietf.org, NETMOD WG <netmod@ietf.org>
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Subject: [Lsr] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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--0000000000003e00da058ae4f90b
Content-Type: text/plain; charset="UTF-8"
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In Section 2.3. and many other locations, the current IS-IS model applies
the parameter overriding rule as below:

[Quote]:

2.3 <https://tools.ietf.org/html/draft-ietf-isis-yang-isis-cfg-35#section-2=
.3>.
Per-Level Parameters


   Some parameters allow a per level configuration.  In this case, the
   parameter is modeled as a container with three configuration
   locations:

   o  a top-level container: corresponds to level-1-2, so the
      configuration applies to both levels.

   o  a level-1 container: corresponds to level-1 specific parameters.

   o  a level-2 container: corresponds to level-2 specific parameters.

               +--rw priority
               |  +--rw value?     uint8
               |  +--rw level-1
               |  |  +--rw value?   uint8
               |  +--rw level-2
               |     +--rw value?   uint8

   Example:

           <priority>
               <value>250</value>
               <level-1>
                   <value>100</value>
               </level-1>
               <level-2>
                   <value>200</value>
               </level-2>
           </priority>

   An implementation SHOULD prefer a level specific parameter over a
   level-all parameter.  As example, if the priority is 100 for the
   level-1, 200 for the level-2 and 250 for the top-level configuration,
   the implementation should use 100 for the level-1 and 200 for the
   level-2.

[End of Quote]


In the model, all three value leaves above have a default statement
=E2=80=9Cdefault 64=E2=80=9D, which brings up my question for the following=
 example:


           <priority>
               <value>250</value>
               <level-1>
                   <value>100</value>
               </level-1>
           </priority>


The user does not provide a configured value for level-2. According to
Section 7.6.1. of RFC7950, because the default value is in use, =E2=80=9Cth=
e server
MUST operationally behave as if the leaf was present in the data tree with
the default value as its value=E2=80=9D. This means the priority value for =
level-2
will be 64 (the default value), so the value 250 can never take effect as
intended in the above quoted Section 2.3.


Is my understanding correct?


Since this is a generic question, I am CC=E2=80=99ing NETMOD WG too.


Thanks,

- Xufeng

--0000000000003e00da058ae4f90b
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">	 	<span></span> 	 	<p style=3D"margin-bottom:0in;line-hei=
ght:100%">In Section 2.3. and many other locations, the current IS-IS model=
 applies the parameter overriding rule as below:</p>

<p style=3D"margin-bottom:0in;line-height:100%">[Quote]:</p>
<pre class=3D"gmail-western"><a href=3D"https://tools.ietf.org/html/draft-i=
etf-isis-yang-isis-cfg-35#section-2.3" name=3D"section-2.3">2.3</a>.  Per-L=
evel Parameters


   Some parameters allow a per level configuration.  In this case, the
   parameter is modeled as a container with three configuration
   locations:

   o  a top-level container: corresponds to level-1-2, so the
      configuration applies to both levels.

   o  a level-1 container: corresponds to level-1 specific parameters.

   o  a level-2 container: corresponds to level-2 specific parameters.

               +--rw priority
               |  +--rw value?     uint8
               |  +--rw level-1
               |  |  +--rw value?   uint8
               |  +--rw level-2
               |     +--rw value?   uint8

   Example:

           &lt;priority&gt;
               &lt;value&gt;250&lt;/value&gt;
               &lt;level-1&gt;
                   &lt;value&gt;100&lt;/value&gt;
               &lt;/level-1&gt;
               &lt;level-2&gt;
                   &lt;value&gt;200&lt;/value&gt;
               &lt;/level-2&gt;
           &lt;/priority&gt;

   An implementation SHOULD prefer a level specific parameter over a
   level-all parameter.  As example, if the priority is 100 for the
   level-1, 200 for the level-2 and 250 for the top-level configuration,
   the implementation should use 100 for the level-1 and 200 for the
   level-2.</pre><p style=3D"margin-bottom:0in;line-height:100%">[End of Qu=
ote]</p>
<p style=3D"margin-bottom:0in;line-height:100%"><br>

</p>
<p style=3D"margin-bottom:0in;line-height:100%">In the model, all three val=
ue leaves above have a default statement =E2=80=9Cdefault 64=E2=80=9D, whic=
h brings up my question for the following example:</p>
<p style=3D"margin-bottom:0in;line-height:100%"><br>

</p>
<pre class=3D"gmail-western">           &lt;priority&gt;
               &lt;value&gt;250&lt;/value&gt;
               &lt;level-1&gt;
                   &lt;value&gt;100&lt;/value&gt;
               &lt;/level-1&gt;
           &lt;/priority&gt;
</pre><p style=3D"margin-bottom:0in;line-height:100%">
<br>

</p>
<p style=3D"margin-bottom:0in;line-height:100%">The user does not provide a=
 configured value for level-2. According to Section 7.6.1. of RFC7950, beca=
use the default value is in use, =E2=80=9Cthe server MUST operationally beh=
ave as if the leaf was present in the data tree with the default value as i=
ts value=E2=80=9D. This means the priority value for level-2 will be 64 (th=
e default value), so the value 250 can never take effect as intended in the=
 above quoted Section 2.3.</p>
<p style=3D"margin-bottom:0in;line-height:100%"><br>

</p>
<p style=3D"margin-bottom:0in;line-height:100%">Is my understanding correct=
?</p>
<p style=3D"margin-bottom:0in;line-height:100%"><br>

</p>
<p style=3D"margin-bottom:0in;line-height:100%">Since this is a generic que=
stion, I am CC=E2=80=99ing NETMOD WG too.</p>
<p style=3D"margin-bottom:0in;line-height:100%"><br>

</p>
<p style=3D"margin-bottom:0in;line-height:100%">Thanks,</p>
<p style=3D"margin-bottom:0in;line-height:100%">- Xufeng</p>
<p style=3D"margin-bottom:0in;line-height:100%"><br>

</p>

</div>

--0000000000003e00da058ae4f90b--


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From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Xufeng Liu <xufeng.liu.ietf@gmail.com>
CC: <lsr@ietf.org>, NETMOD WG <netmod@ietf.org>
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Subject: Re: [Lsr] [netmod] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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Hi,

YANG does not have 'levels'. This seems to be an ISIS specific
question you should ask on the ISIS list.

/js

On Sun, Jun 09, 2019 at 10:35:11AM -0400, Xufeng Liu wrote:
> In Section 2.3. and many other locations, the current IS-IS model appli=
es
> the parameter overriding rule as below:
>=20
> [Quote]:
>=20
> 2.3 <https://tools.ietf.org/html/draft-ietf-isis-yang-isis-cfg-35#secti=
on-2..3>.
> Per-Level Parameters
>=20
>=20
>    Some parameters allow a per level configuration.  In this case, the
>    parameter is modeled as a container with three configuration
>    locations:
>=20
>    o  a top-level container: corresponds to level-1-2, so the
>       configuration applies to both levels.
>=20
>    o  a level-1 container: corresponds to level-1 specific parameters.
>=20
>    o  a level-2 container: corresponds to level-2 specific parameters.
>=20
>                +--rw priority
>                |  +--rw value?     uint8
>                |  +--rw level-1
>                |  |  +--rw value?   uint8
>                |  +--rw level-2
>                |     +--rw value?   uint8
>=20
>    Example:
>=20
>            <priority>
>                <value>250</value>
>                <level-1>
>                    <value>100</value>
>                </level-1>
>                <level-2>
>                    <value>200</value>
>                </level-2>
>            </priority>
>=20
>    An implementation SHOULD prefer a level specific parameter over a
>    level-all parameter.  As example, if the priority is 100 for the
>    level-1, 200 for the level-2 and 250 for the top-level configuration=
,
>    the implementation should use 100 for the level-1 and 200 for the
>    level-2.
>=20
> [End of Quote]
>=20
>=20
> In the model, all three value leaves above have a default statement
> =E2=80=9Cdefault 64=E2=80=9D, which brings up my question for the follo=
wing example:
>=20
>=20
>            <priority>
>                <value>250</value>
>                <level-1>
>                    <value>100</value>
>                </level-1>
>            </priority>
>=20
>=20
> The user does not provide a configured value for level-2. According to
> Section 7.6.1. of RFC7950, because the default value is in use, =E2=80=9C=
the server
> MUST operationally behave as if the leaf was present in the data tree w=
ith
> the default value as its value=E2=80=9D. This means the priority value =
for level-2
> will be 64 (the default value), so the value 250 can never take effect =
as
> intended in the above quoted Section 2.3.
>=20
>=20
> Is my understanding correct?
>=20
>=20
> Since this is a generic question, I am CC=E2=80=99ing NETMOD WG too.
>=20
>=20
> Thanks,
>=20
> - Xufeng

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


--=20
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103         <https://www.jacobs-university.de/>


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Thread-Topic: [netmod] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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Subject: Re: [Lsr] [netmod] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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From: "Rob Wilton (rwilton)" <rwilton@cisco.com>
To: Qin Wu <bill.wu@huawei.com>, Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>, Xufeng Liu <xufeng.liu.ietf@gmail.com>
CC: "lsr@ietf.org" <lsr@ietf.org>, NETMOD WG <netmod@ietf.org>
Thread-Topic: [netmod] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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Date: Mon, 10 Jun 2019 07:55:43 +0000
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Subject: Re: [Lsr] [netmod] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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Subject: Re: [Lsr] [netmod] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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Thank Per for the clear analysis.  Since the current YANG RFC7950 does not
have a formal way to specify the overriding rule, I agree that the best way
is to remove the default statements from "level-1" and "level-2", as Per,
Martin, and Rob suggested.

Regards,
- Xufeng

[Forwarding Per's reply to LSR mailing list]

On Sun, Jun 9, 2019 at 1:08 PM Per Hedeland <per@hedeland.org> wrote:

> On 2019-06-09 17:28, Juergen Schoenwaelder wrote:
> >
> > YANG does not have 'levels'. This seems to be an ISIS specific
> > question you should ask on the ISIS list.
>
> AFAIK, this list is not restricted to discussions of what YANG "is" or
> "has", but also covers (at least) how YANG can be used, and what the
> semantics of various YANG usage patterns are. I think there is a
> generic YANG question in the problem described, and possibly even an
> indication that the wording in the spec is overly restrictive.
>
> > On Sun, Jun 09, 2019 at 10:35:11AM -0400, Xufeng Liu wrote:
> >> In Section 2.3. and many other locations, the current IS-IS model
> applies
> >> the parameter overriding rule as below:
> >>
> >> [Quote]:
> >>
> >> 2.3 <
> https://tools.ietf.org/html/draft-ietf-isis-yang-isis-cfg-35#section-2..3
> >.
> >> Per-Level Parameters
> >>
> >>
> >>     Some parameters allow a per level configuration.  In this case, the
> >>     parameter is modeled as a container with three configuration
> >>     locations:
> >>
> >>     o  a top-level container: corresponds to level-1-2, so the
> >>        configuration applies to both levels.
> >>
> >>     o  a level-1 container: corresponds to level-1 specific parameters.
> >>
> >>     o  a level-2 container: corresponds to level-2 specific parameters.
> >>
> >>                 +--rw priority
> >>                 |  +--rw value?     uint8
> >>                 |  +--rw level-1
> >>                 |  |  +--rw value?   uint8
> >>                 |  +--rw level-2
> >>                 |     +--rw value?   uint8
> >>
> >>     Example:
> >>
> >>             <priority>
> >>                 <value>250</value>
> >>                 <level-1>
> >>                     <value>100</value>
> >>                 </level-1>
> >>                 <level-2>
> >>                     <value>200</value>
> >>                 </level-2>
> >>             </priority>
> >>
> >>     An implementation SHOULD prefer a level specific parameter over a
> >>     level-all parameter.  As example, if the priority is 100 for the
> >>     level-1, 200 for the level-2 and 250 for the top-level
> configuration,
> >>     the implementation should use 100 for the level-1 and 200 for the
> >>     level-2.
> >>
> >> [End of Quote]
> >>
> >>
> >> In the model, all three value leaves above have a default statement
> >>  default 64 , which brings up my question for the following example:
>
> So, to give an actual YANG snippet for this example, it would be
>
>    container priority {
>      leaf value {
>        type uint8;
>        default 64;
>      }
>      container level-1 {
>        leaf value {
>          type uint8;
>          default 64;
>        }
>      }
>      container level-2 {
>        leaf value {
>          type uint8;
>          default 64;
>        }
>      }
>    }
>
> >>             <priority>
> >>                 <value>250</value>
> >>                 <level-1>
> >>                     <value>100</value>
> >>                 </level-1>
> >>             </priority>
> >>
> >>
> >> The user does not provide a configured value for level-2. According to
> >> Section 7.6.1. of RFC7950, because the default value is in use, "the
> server
> >> MUST operationally behave as if the leaf was present in the data tree
> with
> >> the default value as its value". This means the priority value for
> level-2
> >> will be 64 (the default value), so the value 250 can never take effect
> as
> >> intended in the above quoted Section 2.3.
>
> Obviously there is at least a deficiency in the description, since it
> makes no sense with your (justifiable) interpretation. I think it is
> clear that the *intent* is that the value 250 should take effect for
> level-2 in this case (and I think that this is a very valid design).
> That intent could have been made clear by saying "if the priority is
> *configured* as 100" instead of just "if the priority is 100", since
> the "is" applies equally well to a "default value in effect" and a
> configured value.
>
> But this would seem to violate the statement in RFC 7950, since it
> actually does say that the value 64 MUST be used for level-2 in this
> case. Maybe it should have some conditional like "unless otherwise
> specified" or something - but IMHO it's entirely reasonable that the
> "overall system" behaves differently depending on whether the value
> for a specific leaf is actually configured or is just a
> "default-in-effect".
>
> Then again, in this case one could question what the point of the
> default values for the level-1 and level-2 leafs is. Removing them
> would mean that without values configured, they would use the
> "toplevel" value, whether default or configured - and since the
> defaults *in this case* are all the same, it would amount to the
> exactly the intent I assume above, but without any violation of the
> 7950 statement.
>
> However with different defaults, it is not as straightforward - say
> e.g.
>
>    container priority {
>      leaf value {
>        type uint8;
>      }
>      container level-1 {
>        leaf value {
>          type uint8;
>          default 32;
>        }
>      }
>      container level-2 {
>        leaf value {
>          type uint8;
>          default 64;
>        }
>      }
>    }
>
> IMHO, it would make perfect sense (assuming of course that it is
> documented) for the system to in this case behave like
>
>     configured "toplevel"   configured level-2   use for level-2
>
> 1)      nothing               nothing               64
> 2)        250                 nothing              250
> 3)     irrelevant               128                128
>
> And then the case 2) would again seem to violate the 7950 statement.
>
> --Per
>
> >> Is my understanding correct?
> >>
> >>
> >> Since this is a generic question, I am CC ing NETMOD WG too.
> >>
> >>
> >> Thanks,
> >>
> >> - Xufeng
>
> _______________________________________________
> netmod mailing list
> netmod@ietf.org
> https://www.ietf.org/mailman/listinfo/netmod
>

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<div dir=3D"ltr"><div>Thank Per for the clear analysis.=C2=A0 Since the cur=
rent YANG RFC7950 does not have a formal way to specify the overriding rule=
, I agree that the best way is to remove the default statements from &quot;=
level-1&quot; and &quot;level-2&quot;, as Per, Martin, and Rob suggested. <=
br></div><div><br></div><div>Regards,</div><div>- Xufeng</div><div><br></di=
v><div>[Forwarding Per&#39;s reply to LSR mailing list]<br></div><div><br><=
/div><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Su=
n, Jun 9, 2019 at 1:08 PM Per Hedeland &lt;<a href=3D"mailto:per@hedeland.o=
rg">per@hedeland.org</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quo=
te" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204=
);padding-left:1ex">On 2019-06-09 17:28, Juergen Schoenwaelder wrote:<br>
&gt; <br>
&gt; YANG does not have &#39;levels&#39;. This seems to be an ISIS specific=
<br>
&gt; question you should ask on the ISIS list.<br>
<br>
AFAIK, this list is not restricted to discussions of what YANG &quot;is&quo=
t; or<br>
&quot;has&quot;, but also covers (at least) how YANG can be used, and what =
the<br>
semantics of various YANG usage patterns are. I think there is a<br>
generic YANG question in the problem described, and possibly even an<br>
indication that the wording in the spec is overly restrictive.<br>
<br>
&gt; On Sun, Jun 09, 2019 at 10:35:11AM -0400, Xufeng Liu wrote:<br>
&gt;&gt; In Section 2.3. and many other locations, the current IS-IS model =
applies<br>
&gt;&gt; the parameter overriding rule as below:<br>
&gt;&gt;<br>
&gt;&gt; [Quote]:<br>
&gt;&gt;<br>
&gt;&gt; 2.3 &lt;<a href=3D"https://tools.ietf.org/html/draft-ietf-isis-yan=
g-isis-cfg-35#section-2..3" rel=3D"noreferrer" target=3D"_blank">https://to=
ols.ietf.org/html/draft-ietf-isis-yang-isis-cfg-35#section-2..3</a>&gt;.<br=
>
&gt;&gt; Per-Level Parameters<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0Some parameters allow a per level configuration=
.=C2=A0 In this case, the<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0parameter is modeled as a container with three =
configuration<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0locations:<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0o=C2=A0 a top-level container: corresponds to l=
evel-1-2, so the<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 configuration applies to both levels.<b=
r>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0o=C2=A0 a level-1 container: corresponds to lev=
el-1 specific parameters.<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0o=C2=A0 a level-2 container: corresponds to lev=
el-2 specific parameters.<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+--rw=
 priority<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=
=A0 +--rw value?=C2=A0 =C2=A0 =C2=A0uint8<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=
=A0 +--rw level-1<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=
=A0 |=C2=A0 +--rw value?=C2=A0 =C2=A0uint8<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=
=A0 +--rw level-2<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=
=A0 =C2=A0 =C2=A0+--rw value?=C2=A0 =C2=A0uint8<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0Example:<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;priority&gt;<br=
>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;v=
alue&gt;250&lt;/value&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;l=
evel-1&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0&lt;value&gt;100&lt;/value&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;/=
level-1&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;l=
evel-2&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0&lt;value&gt;200&lt;/value&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;/=
level-2&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;/priority&gt;<b=
r>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0An implementation SHOULD prefer a level specifi=
c parameter over a<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0level-all parameter.=C2=A0 As example, if the p=
riority is 100 for the<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0level-1, 200 for the level-2 and 250 for the to=
p-level configuration,<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0the implementation should use 100 for the level=
-1 and 200 for the<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0level-2.<br>
&gt;&gt;<br>
&gt;&gt; [End of Quote]<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; In the model, all three value leaves above have a default statemen=
t<br>
&gt;&gt;=C2=A0 default 64 , which brings up my question for the following e=
xample:<br>
<br>
So, to give an actual YANG snippet for this example, it would be<br>
<br>
=C2=A0 =C2=A0container priority {<br>
=C2=A0 =C2=A0 =C2=A0leaf value {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0type uint8;<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0default 64;<br>
=C2=A0 =C2=A0 =C2=A0}<br>
=C2=A0 =C2=A0 =C2=A0container level-1 {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0leaf value {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0type uint8;<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0default 64;<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0}<br>
=C2=A0 =C2=A0 =C2=A0}<br>
=C2=A0 =C2=A0 =C2=A0container level-2 {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0leaf value {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0type uint8;<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0default 64;<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0}<br>
=C2=A0 =C2=A0 =C2=A0}<br>
=C2=A0 =C2=A0}<br>
<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;priority&gt;<br=
>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;v=
alue&gt;250&lt;/value&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;l=
evel-1&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0&lt;value&gt;100&lt;/value&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;/=
level-1&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;/priority&gt;<b=
r>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; The user does not provide a configured value for level-2. Accordin=
g to<br>
&gt;&gt; Section 7.6.1. of RFC7950, because the default value is in use, &q=
uot;the server<br>
&gt;&gt; MUST operationally behave as if the leaf was present in the data t=
ree with<br>
&gt;&gt; the default value as its value&quot;. This means the priority valu=
e for level-2<br>
&gt;&gt; will be 64 (the default value), so the value 250 can never take ef=
fect as<br>
&gt;&gt; intended in the above quoted Section 2.3.<br>
<br>
Obviously there is at least a deficiency in the description, since it<br>
makes no sense with your (justifiable) interpretation. I think it is<br>
clear that the *intent* is that the value 250 should take effect for<br>
level-2 in this case (and I think that this is a very valid design).<br>
That intent could have been made clear by saying &quot;if the priority is<b=
r>
*configured* as 100&quot; instead of just &quot;if the priority is 100&quot=
;, since<br>
the &quot;is&quot; applies equally well to a &quot;default value in effect&=
quot; and a<br>
configured value.<br>
<br>
But this would seem to violate the statement in RFC 7950, since it<br>
actually does say that the value 64 MUST be used for level-2 in this<br>
case. Maybe it should have some conditional like &quot;unless otherwise<br>
specified&quot; or something - but IMHO it&#39;s entirely reasonable that t=
he<br>
&quot;overall system&quot; behaves differently depending on whether the val=
ue<br>
for a specific leaf is actually configured or is just a<br>
&quot;default-in-effect&quot;.<br>
<br>
Then again, in this case one could question what the point of the<br>
default values for the level-1 and level-2 leafs is. Removing them<br>
would mean that without values configured, they would use the<br>
&quot;toplevel&quot; value, whether default or configured - and since the<b=
r>
defaults *in this case* are all the same, it would amount to the<br>
exactly the intent I assume above, but without any violation of the<br>
7950 statement.<br>
<br>
However with different defaults, it is not as straightforward - say<br>
e.g.<br>
<br>
=C2=A0 =C2=A0container priority {<br>
=C2=A0 =C2=A0 =C2=A0leaf value {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0type uint8;<br>
=C2=A0 =C2=A0 =C2=A0}<br>
=C2=A0 =C2=A0 =C2=A0container level-1 {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0leaf value {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0type uint8;<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0default 32;<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0}<br>
=C2=A0 =C2=A0 =C2=A0}<br>
=C2=A0 =C2=A0 =C2=A0container level-2 {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0leaf value {<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0type uint8;<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0default 64;<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0}<br>
=C2=A0 =C2=A0 =C2=A0}<br>
=C2=A0 =C2=A0}<br>
<br>
IMHO, it would make perfect sense (assuming of course that it is<br>
documented) for the system to in this case behave like<br>
<br>
=C2=A0 =C2=A0 configured &quot;toplevel&quot;=C2=A0 =C2=A0configured level-=
2=C2=A0 =C2=A0use for level-2<br>
<br>
1)=C2=A0 =C2=A0 =C2=A0 nothing=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0nothing=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A064<=
br>
2)=C2=A0 =C2=A0 =C2=A0 =C2=A0 250=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0nothing=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 250<br>
3)=C2=A0 =C2=A0 =C2=A0irrelevant=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0128=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 128=
<br>
<br>
And then the case 2) would again seem to violate the 7950 statement.<br>
<br>
--Per<br>
<br>
&gt;&gt; Is my understanding correct?<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Since this is a generic question, I am CC ing NETMOD WG too.<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; Thanks,<br>
&gt;&gt;<br>
&gt;&gt; - Xufeng<br>
<br>
_______________________________________________<br>
netmod mailing list<br>
<a href=3D"mailto:netmod@ietf.org" target=3D"_blank">netmod@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/netmod" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/listinfo/netmod</a><br>
</blockquote></div></div>

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To: Xufeng Liu <xufeng.liu.ietf@gmail.com>
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From: Per Hedeland <per@hedeland.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/T7-XG23GexUzA2lAjovWzQDrbtg>
Subject: Re: [Lsr] [netmod] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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On 2019-06-11 15:43, Xufeng Liu wrote:
> Thank Per for the clear analysis.  Since the current YANG RFC7950 does not have a formal way to specify the overriding rule, I agree that the best way is to remove the default statements from 
> "level-1" and "level-2", as Per, Martin, and Rob suggested.

Yes, I agree - i.e. the wording "the server MUST operationally behave
as if the leaf was present in the data tree with the default value as
its value" in the spec is absolutely correct, and since this doesn't
match the behavior you want to achieve, you can't use the 'default'
statement.

You should of course still *describe* the behavior, and text in a
'description' statement is just as "normative" as a 'default' statement,
"just" not machine-readable.

--Per

> Regards,
> - Xufeng
> 
> [Forwarding Per's reply to LSR mailing list]
> 
> On Sun, Jun 9, 2019 at 1:08 PM Per Hedeland <per@hedeland.org <mailto:per@hedeland.org>> wrote:
> 
>     On 2019-06-09 17:28, Juergen Schoenwaelder wrote:
>      >
>      > YANG does not have 'levels'. This seems to be an ISIS specific
>      > question you should ask on the ISIS list.
> 
>     AFAIK, this list is not restricted to discussions of what YANG "is" or
>     "has", but also covers (at least) how YANG can be used, and what the
>     semantics of various YANG usage patterns are. I think there is a
>     generic YANG question in the problem described, and possibly even an
>     indication that the wording in the spec is overly restrictive.
> 
>      > On Sun, Jun 09, 2019 at 10:35:11AM -0400, Xufeng Liu wrote:
>      >> In Section 2.3. and many other locations, the current IS-IS model applies
>      >> the parameter overriding rule as below:
>      >>
>      >> [Quote]:
>      >>
>      >> 2.3 <https://tools.ietf.org/html/draft-ietf-isis-yang-isis-cfg-35#section-2..3>.
>      >> Per-Level Parameters
>      >>
>      >>
>      >>     Some parameters allow a per level configuration.  In this case, the
>      >>     parameter is modeled as a container with three configuration
>      >>     locations:
>      >>
>      >>     o  a top-level container: corresponds to level-1-2, so the
>      >>        configuration applies to both levels.
>      >>
>      >>     o  a level-1 container: corresponds to level-1 specific parameters.
>      >>
>      >>     o  a level-2 container: corresponds to level-2 specific parameters.
>      >>
>      >>                 +--rw priority
>      >>                 |  +--rw value?     uint8
>      >>                 |  +--rw level-1
>      >>                 |  |  +--rw value?   uint8
>      >>                 |  +--rw level-2
>      >>                 |     +--rw value?   uint8
>      >>
>      >>     Example:
>      >>
>      >>             <priority>
>      >>                 <value>250</value>
>      >>                 <level-1>
>      >>                     <value>100</value>
>      >>                 </level-1>
>      >>                 <level-2>
>      >>                     <value>200</value>
>      >>                 </level-2>
>      >>             </priority>
>      >>
>      >>     An implementation SHOULD prefer a level specific parameter over a
>      >>     level-all parameter.  As example, if the priority is 100 for the
>      >>     level-1, 200 for the level-2 and 250 for the top-level configuration,
>      >>     the implementation should use 100 for the level-1 and 200 for the
>      >>     level-2.
>      >>
>      >> [End of Quote]
>      >>
>      >>
>      >> In the model, all three value leaves above have a default statement
>      >>  default 64 , which brings up my question for the following example:
> 
>     So, to give an actual YANG snippet for this example, it would be
> 
>         container priority {
>           leaf value {
>             type uint8;
>             default 64;
>           }
>           container level-1 {
>             leaf value {
>               type uint8;
>               default 64;
>             }
>           }
>           container level-2 {
>             leaf value {
>               type uint8;
>               default 64;
>             }
>           }
>         }
> 
>      >>             <priority>
>      >>                 <value>250</value>
>      >>                 <level-1>
>      >>                     <value>100</value>
>      >>                 </level-1>
>      >>             </priority>
>      >>
>      >>
>      >> The user does not provide a configured value for level-2. According to
>      >> Section 7.6.1. of RFC7950, because the default value is in use, "the server
>      >> MUST operationally behave as if the leaf was present in the data tree with
>      >> the default value as its value". This means the priority value for level-2
>      >> will be 64 (the default value), so the value 250 can never take effect as
>      >> intended in the above quoted Section 2.3.
> 
>     Obviously there is at least a deficiency in the description, since it
>     makes no sense with your (justifiable) interpretation. I think it is
>     clear that the *intent* is that the value 250 should take effect for
>     level-2 in this case (and I think that this is a very valid design).
>     That intent could have been made clear by saying "if the priority is
>     *configured* as 100" instead of just "if the priority is 100", since
>     the "is" applies equally well to a "default value in effect" and a
>     configured value.
> 
>     But this would seem to violate the statement in RFC 7950, since it
>     actually does say that the value 64 MUST be used for level-2 in this
>     case. Maybe it should have some conditional like "unless otherwise
>     specified" or something - but IMHO it's entirely reasonable that the
>     "overall system" behaves differently depending on whether the value
>     for a specific leaf is actually configured or is just a
>     "default-in-effect".
> 
>     Then again, in this case one could question what the point of the
>     default values for the level-1 and level-2 leafs is. Removing them
>     would mean that without values configured, they would use the
>     "toplevel" value, whether default or configured - and since the
>     defaults *in this case* are all the same, it would amount to the
>     exactly the intent I assume above, but without any violation of the
>     7950 statement.
> 
>     However with different defaults, it is not as straightforward - say
>     e.g.
> 
>         container priority {
>           leaf value {
>             type uint8;
>           }
>           container level-1 {
>             leaf value {
>               type uint8;
>               default 32;
>             }
>           }
>           container level-2 {
>             leaf value {
>               type uint8;
>               default 64;
>             }
>           }
>         }
> 
>     IMHO, it would make perfect sense (assuming of course that it is
>     documented) for the system to in this case behave like
> 
>          configured "toplevel"   configured level-2   use for level-2
> 
>     1)      nothing               nothing               64
>     2)        250                 nothing              250
>     3)     irrelevant               128                128
> 
>     And then the case 2) would again seem to violate the 7950 statement.
> 
>     --Per
> 
>      >> Is my understanding correct?
>      >>
>      >>
>      >> Since this is a generic question, I am CC ing NETMOD WG too.
>      >>
>      >>
>      >> Thanks,
>      >>
>      >> - Xufeng
> 
>     _______________________________________________
>     netmod mailing list
>     netmod@ietf.org <mailto:netmod@ietf.org>
>     https://www.ietf.org/mailman/listinfo/netmod
> 


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Subject: Re: [Lsr] [netmod] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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To: Xufeng Liu <xufeng.liu.ietf@gmail.com>, "lsr@ietf.org" <lsr@ietf.org>, NETMOD WG <netmod@ietf.org>
Thread-Topic: [Lsr] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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Date: Wed, 12 Jun 2019 08:23:08 +0000
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Subject: Re: [Lsr] A question on the parameter overriding in draft-ietf-isis-yang-isis-cfg
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--_000_9E32478DFA9976438E7A22F69B08FF924C252A2EOPEXCAUBMA3corp_--


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This begins a 2 week WG adoption call for =
draft-ginsberg-lsr-isis-invalid-tlv.

https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/

Please express your support or non-support.

Authors: Please indicate your knowledge of any IPR related to this work
to the list as well.

Thanks,
Chris & Acee.



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From nobody Wed Jun 12 05:05:52 2019
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Subject: [Lsr] The LSR WG has placed draft-ginsberg-lsr-isis-invalid-tlv in state "Call For Adoption By WG Issued"
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The LSR WG has placed draft-ginsberg-lsr-isis-invalid-tlv in state
Call For Adoption By WG Issued (entered by Christian Hopps)

The document is available at
https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/


From nobody Wed Jun 12 05:07:54 2019
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To: Christian Hopps <chopps@chopps.org>, lsr@ietf.org
Cc: lsr-chairs@ietf.org, lsr-ads@ietf.org, draft-ginsberg-lsr-isis-invalid-tlv@ietf.org
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From: Peter Psenak <ppsenak@cisco.com>
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Date: Wed, 12 Jun 2019 14:07:47 +0200
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Subject: Re: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Hi Chris,

I support the WG adoption of draft-ginsberg-lsr-isis-invalid-tlv.

thanks,
Peter


On 12/06/2019 14:04, Christian Hopps wrote:
> This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-invalid-tlv.
> 
> https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/
> 
> Please express your support or non-support.
> 
> Authors: Please indicate your knowledge of any IPR related to this work
> to the list as well.
> 
> Thanks,
> Chris & Acee.
> 
> 
> 


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From: Tony Li <tony.li@tony.li>
Date: Wed, 12 Jun 2019 06:25:34 -0700
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To: Peter Psenak <ppsenak@cisco.com>
Cc: Christian Hopps <chopps@chopps.org>, draft-ginsberg-lsr-isis-invalid-tlv@ietf.org,  lsr@ietf.org, lsr-ads@ietf.org, lsr-chairs@ietf.org
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Support as co-author.

I am not aware of any IPR.

T

On Wed, Jun 12, 2019 at 5:07 AM Peter Psenak <ppsenak@cisco.com> wrote:

> Hi Chris,
>
> I support the WG adoption of draft-ginsberg-lsr-isis-invalid-tlv.
>
> thanks,
> Peter
>
>
> On 12/06/2019 14:04, Christian Hopps wrote:
> > This begins a 2 week WG adoption call for
> draft-ginsberg-lsr-isis-invalid-tlv.
> >
> > https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/
> >
> > Please express your support or non-support.
> >
> > Authors: Please indicate your knowledge of any IPR related to this work
> > to the list as well.
> >
> > Thanks,
> > Chris & Acee.
> >
> >
> >
>
>

--000000000000d27245058b2059b4
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<div><br></div><div dir=3D"auto">Support as co-author.</div><div dir=3D"aut=
o"><br></div><div dir=3D"auto">I am not aware of any IPR.</div><div dir=3D"=
auto"><br></div><div dir=3D"auto">T</div><div><br><div class=3D"gmail_quote=
"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Jun 12, 2019 at 5:07 AM Pet=
er Psenak &lt;<a href=3D"mailto:ppsenak@cisco.com">ppsenak@cisco.com</a>&gt=
; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .=
8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Chris,<br>
<br>
I support the WG adoption of draft-ginsberg-lsr-isis-invalid-tlv.<br>
<br>
thanks,<br>
Peter<br>
<br>
<br>
On 12/06/2019 14:04, Christian Hopps wrote:<br>
&gt; This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-inva=
lid-tlv.<br>
&gt; <br>
&gt; <a href=3D"https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-in=
valid-tlv/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.o=
rg/doc/draft-ginsberg-lsr-isis-invalid-tlv/</a><br>
&gt; <br>
&gt; Please express your support or non-support.<br>
&gt; <br>
&gt; Authors: Please indicate your knowledge of any IPR related to this wor=
k<br>
&gt; to the list as well.<br>
&gt; <br>
&gt; Thanks,<br>
&gt; Chris &amp; Acee.<br>
&gt; <br>
&gt; <br>
&gt; <br>
<br>
</blockquote></div></div>

--000000000000d27245058b2059b4--


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
CC: "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ginsberg-lsr-isis-invalid-tlv@ietf.org" <draft-ginsberg-lsr-isis-invalid-tlv@ietf.org>
Thread-Topic: WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Subject: Re: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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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-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ginsberg-lsr-isis-invalid-tlv@ietf.org" <draft-ginsberg-lsr-isis-invalid-tlv@ietf.org>
Thread-Topic: WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Date: Wed, 12 Jun 2019 14:47:06 +0000
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Subject: Re: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Support as co-author.

I am not aware of any relevant IPR.

   Les

> -----Original Message-----
> From: Christian Hopps <chopps@chopps.org>
> Sent: Wednesday, June 12, 2019 5:05 AM
> To: lsr@ietf.org
> Cc: Christian Hopps <chopps@chopps.org>; lsr-chairs@ietf.org; lsr-
> ads@ietf.org; draft-ginsberg-lsr-isis-invalid-tlv@ietf.org
> Subject: WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
>=20
> This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-invalid=
-tlv.
>=20
> https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/
>=20
> Please express your support or non-support.
>=20
> Authors: Please indicate your knowledge of any IPR related to this work
> to the list as well.
>=20
> Thanks,
> Chris & Acee.
>=20


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From: Eric Gray <eric.gray@ericsson.com>
To: Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
CC: "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ginsberg-lsr-isis-invalid-tlv@ietf.org" <draft-ginsberg-lsr-isis-invalid-tlv@ietf.org>
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Subject: Re: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Support.

-----Original Message-----
From: Lsr <lsr-bounces@ietf.org> On Behalf Of Christian Hopps
Sent: Wednesday, June 12, 2019 8:05 AM
To: lsr@ietf.org
Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; Christian Hopps <chopps@chopps.o=
rg>; draft-ginsberg-lsr-isis-invalid-tlv@ietf.org
Subject: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv

This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-invalid-t=
lv.

https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/

Please express your support or non-support.

Authors: Please indicate your knowledge of any IPR related to this work to =
the list as well.

Thanks,
Chris & Acee.



From nobody Wed Jun 12 08:10:53 2019
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To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, Christian Hopps <chopps@chopps.org>, lsr@ietf.org
Cc: lsr-chairs@ietf.org, lsr-ads@ietf.org, draft-ginsberg-lsr-isis-invalid-tlv@ietf.org
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From: Paul Wells <pauwells@cisco.com>
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Date: Wed, 12 Jun 2019 10:10:39 -0500
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Subject: Re: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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I also support as co-author. I'm not aware of any IPR.

Regards,
Paul

On 6/12/19 9:47 AM, Les Ginsberg (ginsberg) wrote:
> Support as co-author.
>
> I am not aware of any relevant IPR.
>
>     Les
>
>> -----Original Message-----
>> From: Christian Hopps <chopps@chopps.org>
>> Sent: Wednesday, June 12, 2019 5:05 AM
>> To: lsr@ietf.org
>> Cc: Christian Hopps <chopps@chopps.org>; lsr-chairs@ietf.org; lsr-
>> ads@ietf.org; draft-ginsberg-lsr-isis-invalid-tlv@ietf.org
>> Subject: WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
>>
>> This begins a 2 week WG adoption call for
> draft-ginsberg-lsr-isis-invalid-tlv.
>> https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/
>>
>> Please express your support or non-support.
>>
>> Authors: Please indicate your knowledge of any IPR related to this work
>> to the list as well.
>>
>> Thanks,
>> Chris & Acee.
>>


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From: Alexander Vainshtein <Alexander.Vainshtein@ecitele.com>
To: Christian Hopps <chopps@chopps.org>
CC: "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ginsberg-lsr-isis-invalid-tlv@ietf.org" <draft-ginsberg-lsr-isis-invalid-tlv@ietf.org>, "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/DP6bjQw84Cs5_AchDJsBW3fKvE8>
Subject: Re: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Support.

Regards,
Sasha

Office: +972-39266302
Cell:      +972-549266302
Email:   Alexander.Vainshtein@ecitele.com


-----Original Message-----
From: Lsr <lsr-bounces@ietf.org> On Behalf Of Christian Hopps
Sent: Wednesday, June 12, 2019 3:05 PM
To: lsr@ietf.org
Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; Christian Hopps <chopps@chopps.=
org>; draft-ginsberg-lsr-isis-invalid-tlv@ietf.org
Subject: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv

This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-invalid-=
tlv.

https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/

Please express your support or non-support.

Authors: Please indicate your knowledge of any IPR related to this work to=
 the list as well.

Thanks,
Chris & Acee.


__________________________________________________________________________=
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This e-mail message is intended for the recipient only and contains inform=
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From: Shraddha Hegde <shraddha@juniper.net>
To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
CC: "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ginsberg-lsr-isis-invalid-tlv@ietf.org" <draft-ginsberg-lsr-isis-invalid-tlv@ietf.org>
Thread-Topic: WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/FhC1Zrk_egechLna55vGkPHXgWE>
Subject: Re: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Support as co-author. I am not aware of any IPR on this.

Rgds
Shraddha

-----Original Message-----
From: Les Ginsberg (ginsberg) <ginsberg@cisco.com>=20
Sent: Wednesday, June 12, 2019 8:17 PM
To: Christian Hopps <chopps@chopps.org>; lsr@ietf.org
Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; draft-ginsberg-lsr-isis-invalid-=
tlv@ietf.org
Subject: RE: WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv

Support as co-author.

I am not aware of any relevant IPR.

   Les

> -----Original Message-----
> From: Christian Hopps <chopps@chopps.org>
> Sent: Wednesday, June 12, 2019 5:05 AM
> To: lsr@ietf.org
> Cc: Christian Hopps <chopps@chopps.org>; lsr-chairs@ietf.org; lsr-=20
> ads@ietf.org; draft-ginsberg-lsr-isis-invalid-tlv@ietf.org
> Subject: WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
>=20
> This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-invalid=
-tlv.
>=20
> https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__datatracker.ietf.
> org_doc_draft-2Dginsberg-2Dlsr-2Disis-2Dinvalid-2Dtlv_&d=3DDwIFAg&c=3DHAk=
Y
> uh63rsuhr6Scbfh0UjBXeMK-ndb3voDTXcWzoCI&r=3DNyjLsr7JA7mvpCJa0YmPdVKcmMXJ
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g
> PkGZtq2PS6q0hbetVHnLImSNABBSlrifsTbk8&e=3D
>=20
> Please express your support or non-support.
>=20
> Authors: Please indicate your knowledge of any IPR related to this=20
> work to the list as well.
>=20
> Thanks,
> Chris & Acee.
>=20


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CC: "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ginsberg-lsr-isis-invalid-tlv@ietf.org" <draft-ginsberg-lsr-isis-invalid-tlv@ietf.org>
Thread-Topic: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
Thread-Index: AQHVIRcSUhX8ZLLwg066JAA2ypnoT6aZNukw
Date: Thu, 13 Jun 2019 07:49:42 +0000
Message-ID: <19536_1560412182_5D020016_19536_422_1_9E32478DFA9976438E7A22F69B08FF924C2543DC@OPEXCAUBMA3.corporate.adroot.infra.ftgroup>
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Support

-----Original Message-----
From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of Christian Hopps
Sent: Wednesday, June 12, 2019 14:05
To: lsr@ietf.org
Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; Christian Hopps; draft-ginsberg-=
lsr-isis-invalid-tlv@ietf.org
Subject: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv

This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-invalid-t=
lv.

https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/

Please express your support or non-support.

Authors: Please indicate your knowledge of any IPR related to this work to =
the list as well.

Thanks,
Chris & Acee.



___________________________________________________________________________=
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Date: Thu, 13 Jun 2019 07:18:05 -0700
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Support

On Wed, Jun 12, 2019, 5:05 AM Christian Hopps <chopps@chopps.org> wrote:

> This begins a 2 week WG adoption call for
> draft-ginsberg-lsr-isis-invalid-tlv.
>
> https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/
>
> Please express your support or non-support.
>
> Authors: Please indicate your knowledge of any IPR related to this work
> to the list as well.
>
> Thanks,
> Chris & Acee.
>
>
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr
>

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<div dir=3D"auto">Support</div><br><div class=3D"gmail_quote"><div dir=3D"l=
tr" class=3D"gmail_attr">On Wed, Jun 12, 2019, 5:05 AM Christian Hopps &lt;=
<a href=3D"mailto:chopps@chopps.org">chopps@chopps.org</a>&gt; wrote:<br></=
div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-lef=
t:1px #ccc solid;padding-left:1ex">This begins a 2 week WG adoption call fo=
r draft-ginsberg-lsr-isis-invalid-tlv.<br>
<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid=
-tlv/" rel=3D"noreferrer noreferrer" target=3D"_blank">https://datatracker.=
ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/</a><br>
<br>
Please express your support or non-support.<br>
<br>
Authors: Please indicate your knowledge of any IPR related to this work<br>
to the list as well.<br>
<br>
Thanks,<br>
Chris &amp; Acee.<br>
<br>
<br>
_______________________________________________<br>
Lsr mailing list<br>
<a href=3D"mailto:Lsr@ietf.org" target=3D"_blank" rel=3D"noreferrer">Lsr@ie=
tf.org</a><br>
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eferrer" target=3D"_blank">https://www.ietf.org/mailman/listinfo/lsr</a><br=
>
</blockquote></div>

--00000000000080f998058b353342--


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From: Jeff Tantsura <jefftant.ietf@gmail.com>
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Yes/support

Cheers,
Jeff

> On Jun 12, 2019, at 15:04, Christian Hopps <chopps@chopps.org> wrote:
>=20
> This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-invalid-=
tlv.
>=20
> https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/
>=20
> Please express your support or non-support.
>=20
> Authors: Please indicate your knowledge of any IPR related to this work
> to the list as well.
>=20
> Thanks,
> Chris & Acee.
>=20
>=20
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr


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Support.

--Bruno

-----Original Message-----
From: Lsr [mailto:lsr-bounces@ietf.org] On Behalf Of Christian Hopps
Sent: Wednesday, June 12, 2019 2:05 PM
To: lsr@ietf.org
Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; Christian Hopps; draft-ginsberg-=
lsr-isis-invalid-tlv@ietf.org
Subject: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv

This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-invalid-t=
lv.

https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/

Please express your support or non-support.

Authors: Please indicate your knowledge of any IPR related to this work
to the list as well.

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-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ginsberg-lsr-isis-invalid-tlv@ietf.org" <draft-ginsberg-lsr-isis-invalid-tlv@ietf.org>
Thread-Topic: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Subject: Re: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Support the adoption of this draft by the WG.

Thanks,
Ketan

-----Original Message-----
From: Lsr <lsr-bounces@ietf.org> On Behalf Of Christian Hopps
Sent: 12 June 2019 17:35
To: lsr@ietf.org
Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; Christian Hopps <chopps@chopps.o=
rg>; draft-ginsberg-lsr-isis-invalid-tlv@ietf.org
Subject: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv

This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-invalid-t=
lv.

https://datatracker.ietf.org/doc/draft-ginsberg-lsr-isis-invalid-tlv/

Please express your support or non-support.

Authors: Please indicate your knowledge of any IPR related to this work to =
the list as well.

Thanks,
Chris & Acee.



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From: Huaimo Chen <huaimo.chen@futurewei.com>
To: Christian Hopps <chopps@chopps.org>, "lsr@ietf.org" <lsr@ietf.org>
CC: "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>, "lsr-ads@ietf.org" <lsr-ads@ietf.org>, "draft-ginsberg-lsr-isis-invalid-tlv@ietf.org" <draft-ginsberg-lsr-isis-invalid-tlv@ietf.org>
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Subject: Re: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv
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Support.

Best Regards,
Huaimo
-----Original Message-----
From: Lsr <lsr-bounces@ietf.org> On Behalf Of Christian Hopps
Sent: 12 June 2019 17:35
To: lsr@ietf.org
Cc: lsr-chairs@ietf.org; lsr-ads@ietf.org; Christian Hopps <chopps@chopps.o=
rg>; draft-ginsberg-lsr-isis-invalid-tlv@ietf.org
Subject: [Lsr] WG Adoption Call: draft-ginsberg-lsr-isis-invalid-tlv

This begins a 2 week WG adoption call for draft-ginsberg-lsr-isis-invalid-t=
lv.

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cker.ietf.org%2Fdoc%2Fdraft-ginsberg-lsr-isis-invalid-tlv%2F&amp;data=3D02%=
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Please express your support or non-support.

Authors: Please indicate your knowledge of any IPR related to this work to =
the list as well.

Thanks,
Chris & Acee.


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: "draft-ietf-lsr-pce-discovery-security-support@ietf.org" <draft-ietf-lsr-pce-discovery-security-support@ietf.org>
CC: "lsr@ietf.org" <lsr@ietf.org>, "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
Thread-Topic: [Lsr] I-D Action: draft-ietf-lsr-pce-discovery-security-support-01.txt
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Subject: Re: [Lsr] I-D Action: draft-ietf-lsr-pce-discovery-security-support-01.txt
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Subject: [Lsr] I-D Action: draft-ietf-ospf-yang-22.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Link State Routing WG of the IETF.

        Title           : YANG Data Model for OSPF Protocol
        Authors         : Derek Yeung
                          Yingzhen Qu
                          Jeffrey Zhang
                          Ing-Wher Chen
                          Acee Lindem
	Filename        : draft-ietf-ospf-yang-22.txt
	Pages           : 125
	Date            : 2019-06-22

Abstract:
   This document defines a YANG data model that can be used to configure
   and manage OSPF.  The model is based on YANG 1.1 as defined in RFC
   7950 and conforms to the Network Management Datastore Architecture
   (NDMA) as described in RFC 8342.


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-ospf-yang-22
https://datatracker.ietf.org/doc/html/draft-ietf-ospf-yang-22

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ospf-yang-22


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

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


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From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, "draft-ietf-lsr-pce-discovery-security-support@ietf.org" <draft-ietf-lsr-pce-discovery-security-support@ietf.org>
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Subject: Re: [Lsr] I-D Action: draft-ietf-lsr-pce-discovery-security-support-01.txt
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From: Qin Wu <bill.wu@huawei.com>
To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, "Acee Lindem (acee)" <acee@cisco.com>, "draft-ietf-lsr-pce-discovery-security-support@ietf.org" <draft-ietf-lsr-pce-discovery-security-support@ietf.org>
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On June 22, 2019 at 7:03:58 PM, Acee Lindem (acee) (acee@cisco.com) wrote:

Acee:

Hi!

Thanks for the review - we will address your comments in the -22 version.
See inline.

I have a couple of replies.  Please take a look at the bottom because it
looks like you didn=E2=80=99t get (or missed) part of the review.

Thanks!

Alvaro.


...

237 9. nsr: Support OSPF Non-Stop Routing (NSR).

[minor] Reference?

<acee> No IETF reference for OSPF NSR. However, I have a few patents in
this area - should the model reference these? __

If they are applicable to this document, then yes, please disclose them.
But NSR is not described here (so I wouldn=E2=80=99t think the patents appl=
y),
which is why I was asking for a reference.   Right now the model says NSR
can be enabled/disabled, but it doesn=E2=80=99t explain what is being
enabled/disabled.  Given that, it is not clear what vendors can claim to
support, leading to potential incompatibilities and/or unintended behavior.

I would like to either see a description (but this document is probably not
the right place for that), a pointer to a description (which doesn=E2=80=99=
t have
to be an IETF document), or to have the support taken out.  If the WG
agreed to what NSR means, then I would be fine with transcribing some of
that here (from an existing mail thread, for example).


...
242 11. admin-control: Support Administrative control of the protocol
243 state.

[minor] This seems like a "basic" feature: enabling/disabling the
protocol. Why was it decided to make it optional? Are there
implementations that don't support enabling/disabling?

<acee> I'm happy to remove it.

I was not asking you to remove it=E2=80=A6I was simply wondering why it is =
optional.

You seem to have removed it completely, but it is still in =C2=A72.5.


...

...
464 2.6. OSPF Area Configuration/Operational State
...
570 | | +--rw hello-interval? uint16
571 | | +--rw dead-interval? uint32
572 | | +--rw retransmit-interval? uint16

[minor] Why aren't rt-types:timer-value-* used for the *-timer/interval
definitions? I would have thought this was exactly the reason for the
definitions in rfc8294.

<acee> I'd like to use these types universally. However, YANG seems to have
a restriction that I can't further restrict the range. This really sucks.
Will do what I can and make the best trade-off.

I see you changed all, except retransmit-interval and restart-interval=E2=
=80=A6.
Just pointing it out in case you meant to.


...

...
1685 typedef if-state-type {
1686 type enumeration {
...
1712 enum backup {
1713 value "6";
1714 description
1715 "Interface Backup Designated Router (BDR) state.";
1716 }

[nit] s/backup/bdr To match the other instances where a BDR is referenced

<acee> Good catch. Fixed.

Thanks,
Acee

What about the rest of the comments??

https://mailarchive.ietf.org/arch/msg/lsr/LKvR2rfkPHJui_GMRerIdDNHkug


I don=E2=80=99t know if it=E2=80=99s me, but several people seem to not rec=
eive the full
length of my comments=E2=80=A6but they are complete in the archive=E2=80=A6=
so I=E2=80=99m not sure
that the problem is.  Please take a look at the archive =E2=80=94 I have pa=
sted
comments after line 1716 below.  I am changing the state to Revised ID
Needed.

Thanks!

Alvaro.



...

2729       container network {

2730         when "derived-from-or-self(../../header/type, "

2731            + "'ospfv3-network-lsa')" {

2732           description

2733             "Only applies to Network LSAs.";

2734         }

2735         description "Network LSA.";


[nit] Perhaps network-lsa could be a better name.



...

3053     grouping lsa-common {

3054       description

3055           "Common fields for OSPF LSA representation.";

3056       leaf decoded-completed {

3057         type boolean;

3058         description

3059           "The OSPF LSA body is fully decoded.";

3060       }


[minor] What is decoded-completed indicating?  Does it indicate that no
errors where found, IOW, "successful decoding"?  Does it mean that the LSA
has been decoded (but not an indication of success, or not)?  Is it a
time-based indication; IOW, is there a chance that an LSA has not been
processed when retrieving the information...would that result in false??



...

3271     grouping instance-fast-reroute-state {

3272       description "IPFRR state data grouping";


[nit] s/IPFRR/IP-FRR   That is how the term is used everywhere else in this
document.



...

3541       leaf hello-interval {

3542         type uint16 {

3543           range "1..65535";

3544         }

3545         description

3546           "Interval between hello packets (seconds). It must

3547            be the same for all routers on the same network.

3548            Different networks, implementations, and deployments

3549            will use different hello-intervals. A sample value

3550            for a LAN network would be 10 seconds.";

3551       }


[minor] Some implementations support having a sub-second
hello-interval...but with a timer in seconds that can't be done.



...

3664                 leaf ospfv2-key {

3665                   type string;

3666                   description

3667                     "OSPFv2 authentication key. The

3668                      length of the key may be dependent on the

3669                      cryptographic algorithm. In cases where it is

3670                      not, a key length of at least 32 octets should

3671                      be supported to allow for interoperability

3672                      with strong keys.";


[major] Is there a reference for the part about the "key length of at least
32 octets should be supported to allow for interoperability with strong
keys"?



...

3719                 leaf ospfv3-key {

3720                   type string;

3721                   description

3722                     "OSPFv2 authentication key. The

3723                      length of the key may be dependent on the

3724                      cryptographic algorithm. In cases where it is

3725                      not, a key length of at least 32 octets should

3726                      be supported to allow for interoperability

3727                      with strong keys.";


[major] The same comment from ospfv2-key applies here.


[nit] s/OSPFv2 authentication key/OSPFv3 authentication key



...

3856           leaf priority {

3857             type uint8 {

3858               range "1..255";

3859             }

3860             description "Neighbor priority for DR election.";

3861           }


[minor] A range is included in this definition, but not in other priority
statements before...should a range be included in those other definitions?


[minor] Why is 0 not applicable here?



...

3936       leaf dead-timer {

3937         type uint32;

3938         units "seconds";

3939         config false;

3940         description "This timer tracks the remaining time before

3941                      the neighbor is declared dead.";

3942       }


[major] For *-timer: Is tracking the remaining time in seconds enough?  I
would assume that ms would be the right unit.  Why seconds?



...

4390       container preference {

4391         description "Route preference config state.";


[minor] Maybe it's just me, but I don't understand what this piece of the
model does.  It seems like it can be used to configure which type of route
is preferred: external over intra-area, for example...but that doens't make
too much sense to me.  Is that the intended use?  Can you please give me an
example of when this functionality could be used?


4392         choice scope {

4393           description

4394             "Options for expressing preference

4395              as single or multiple values.";

4396           case single-value {

4397             leaf all {

4398               type uint8;

4399               description

4400                 "Preference for intra-area, inter-area, and

4401                  external routes.";

4402             }

4403           }

4404           case multi-values {

4405             choice granularity {

4406               description

4407                 "Options for expressing preference

4408                  for intra-area and inter-area routes.";

4409               case detail {

4410                 leaf intra-area {

4411                   type uint8;

4412                   description

4413                     "Preference for intra-area routes.";

4414                 }

4415                 leaf inter-area {

4416                   type uint8;

4417                   description

4418                     "Preference for inter-area routes.";

4419                 }

4420               }

4421               case coarse {

4422                 leaf internal {

4423                   type uint8;

4424                   description

4425                     "Preference for both intra-area and

4426                      inter-area routes.";

4427                 }

4428               }

4429             }

4430             leaf external {

4431               type uint8;

4432               description

4433                 "Preference for AS external routes.";

4434             }

4435           }


4437         }

4438       }



...

4551       container stub-router {

4552         if-feature stub-router;

4553         description "Set maximum metric configuration";


4555         choice trigger {

4556           description

4557             "Specific triggers which will enable stub

4558              router state.";

4559           container always {

4560             presence

4561               "Enables unconditional stub router support";

4562             description

4563               "Unconditional stub router state (advertise

4564                transit links with max metric";


[minor] s//MaxLinkMetric [rfc6897]



...

5537 4.  Security Considerations

...

5552   There are a number of data nodes defined in ietf-ospf.yang module

5553   that are writable/creatable/deletable (i.e., config true, which is

5554   the default).  These data nodes may be considered sensitive or

5555   vulnerable in some network environments.  Write operations (e.g.,

5556   edit-config) to these data nodes without proper protection can have =
a

5557   negative effect on network operations.  For OSPF, the ability to

5558   modify OSPF configuration will allow the entire OSPF domain to be

5559   compromised including peering with unauthorized routers to misroute

5560   traffic or mount a massive Denial-of-Service (DoS) attack.  The

5561   security considerations of OSPFv2 [RFC2328] and [RFC5340] apply to

5562   the ietf-ospf.yang module as well.


[minor] s/OSPFv2 [RFC2328] and [RFC5340]/OSPFv2 [RFC2328] and OSPFv3
[RFC5340]


[major] How do the "security considerations of OSPFv2 [RFC2328] and
[RFC5340] apply to the ietf-ospf.yang module"?  rfc2328/rfc5340 only talk
about authentication of the protocol exchange...



...

5626 7.1.  Normative References

...

5679   [RFC4750]  Joyal, D., Ed., Galecki, P., Ed., Giacalone, S., Ed.,

5680              Coltun, R., and F. Baker, "OSPF Version 2 Management

5681              Information Base", RFC 4750, DOI 10.17487/RFC4750,

5682              December 2006, <https://www.rfc-editor.org/info/rfc4750>.

...

5731   [RFC5643]  Joyal, D., Ed. and V. Manral, Ed., "Management Informatio=
n

5732              Base for OSPFv3", RFC 5643, DOI 10.17487/RFC5643, August

5733              2009, <https://www.rfc-editor.org/info/rfc5643>.

...

5745   [RFC5880]  Katz, D. and D. Ward, "Bidirectional Forwarding Detection

5746              (BFD)", RFC 5880, DOI 10.17487/RFC5880, June 2010,

5747              <https://www.rfc-editor.org/info/rfc5880>.


5749   [RFC5881]  Katz, D. and D. Ward, "Bidirectional Forwarding Detection

5750              (BFD) for IPv4 and IPv6 (Single Hop)", RFC 5881,

5751              DOI 10.17487/RFC5881, June 2010, <https://www.rfc-

5752              editor.org/info/rfc5881>.


[minor] I think these references can be Informative.



...

5880 7.2.  Informative References


[major] All the references in this section (except maybe rfc905) point at
functionality in the model...as the references above, these should be
Normative as well.


These documents are already in the Downref registry: rfc5309, rfc5443,
rfc5714, rfc6987.


The others are not, but I don't expect any issues in the IETF Last Call.

--0000000000000a3d44058c17fc56
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div style=3D"font-family:Helve=
tica,Arial;font-size:13px">On June 22, 2019 at 7:03:58 PM, Acee Lindem (ace=
e) (<a href=3D"mailto:acee@cisco.com">acee@cisco.com</a>) wrote:</div><div =
style=3D"font-family:Helvetica,Arial;font-size:13px"><br></div><div style=
=3D"font-family:Helvetica,Arial;font-size:13px">Acee:</div><div style=3D"fo=
nt-family:Helvetica,Arial;font-size:13px"><br></div><div style=3D"font-fami=
ly:Helvetica,Arial;font-size:13px">Hi!</div><div style=3D"font-family:Helve=
tica,Arial;font-size:13px"><br></div> <div><div><blockquote type=3D"cite" c=
lass=3D"clean_bq" style=3D"font-family:Helvetica,Arial;font-size:13px;font-=
style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:nor=
mal;text-align:start;text-indent:0px;text-transform:none;white-space:normal=
;word-spacing:0px"><span><div><div></div><div>Thanks for the review - we wi=
ll address your comments in the -22 version. See inline.<span class=3D"Appl=
e-converted-space">=C2=A0</span></div></div></span></blockquote></div><p>I =
have a couple of replies.=C2=A0 Please take a look at the bottom because it=
 looks like you didn=E2=80=99t get (or missed) part of the review.</p><p>Th=
anks!</p><p>Alvaro.</p><p><br></p><p>...</p><div><blockquote type=3D"cite" =
class=3D"clean_bq" style=3D"font-family:Helvetica,Arial;font-size:13px;font=
-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:no=
rmal;text-align:start;text-indent:0px;text-transform:none;white-space:norma=
l;word-spacing:0px"><span><div><div>237 9. nsr: Support OSPF Non-Stop Routi=
ng (NSR).<span class=3D"Apple-converted-space">=C2=A0</span><br><br>[minor]=
 Reference?<span class=3D"Apple-converted-space">=C2=A0</span><br><br>&lt;a=
cee&gt; No IETF reference for OSPF NSR. However, I have a few patents in th=
is area - should the model reference these? __<span class=3D"Apple-converte=
d-space">=C2=A0</span></div></div></span></blockquote></div></div><p>If the=
y are applicable to this document, then yes, please disclose them.=C2=A0 Bu=
t NSR is not described here (so I wouldn=E2=80=99t think the patents apply)=
, which is why I was asking for a reference. =C2=A0 Right now the model say=
s NSR can be enabled/disabled, but it doesn=E2=80=99t explain what is being=
 enabled/disabled.=C2=A0 Given that, it is not clear what vendors can claim=
 to support, leading to potential incompatibilities and/or unintended behav=
ior.</p><p>I would like to either see a description (but this document is p=
robably not the right place for that), a pointer to a description (which do=
esn=E2=80=99t have to be an IETF document), or to have the support taken ou=
t.=C2=A0 If the WG agreed to what NSR means, then I would be fine with tran=
scribing some of that here (from an existing mail thread, for example).</p>=
<p><br></p><div><div><blockquote type=3D"cite" class=3D"clean_bq" style=3D"=
font-family:Helvetica,Arial;font-size:13px;font-style:normal;font-variant-c=
aps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-i=
ndent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span><d=
iv><div>...<span class=3D"Apple-converted-space">=C2=A0</span><br>242 11. a=
dmin-control: Support Administrative control of the protocol<span class=3D"=
Apple-converted-space">=C2=A0</span><br>243 state.<span class=3D"Apple-conv=
erted-space">=C2=A0</span><br><br>[minor] This seems like a &quot;basic&quo=
t; feature: enabling/disabling the<span class=3D"Apple-converted-space">=C2=
=A0</span><br>protocol. Why was it decided to make it optional? Are there<s=
pan class=3D"Apple-converted-space">=C2=A0</span><br>implementations that d=
on&#39;t support enabling/disabling?<span class=3D"Apple-converted-space">=
=C2=A0</span><br><br>&lt;acee&gt; I&#39;m happy to remove it.<span class=3D=
"Apple-converted-space">=C2=A0</span></div></div></span></blockquote></div>=
<p>I was not asking you to remove it=E2=80=A6I was simply wondering why it =
is optional.</p><p>You seem to have removed it completely, but it is still =
in =C2=A72.5.</p><p><br></p><p>...</p><div><div><blockquote type=3D"cite" c=
lass=3D"clean_bq" style=3D"font-family:Helvetica,Arial;font-size:13px;font-=
style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:nor=
mal;text-align:start;text-indent:0px;text-transform:none;white-space:normal=
;word-spacing:0px"><span><div><div>...<span class=3D"Apple-converted-space"=
>=C2=A0</span><br>464 2.6. OSPF Area Configuration/Operational State<span c=
lass=3D"Apple-converted-space">=C2=A0</span><br>...<span class=3D"Apple-con=
verted-space">=C2=A0</span><br>570 | | +--rw hello-interval? uint16<span cl=
ass=3D"Apple-converted-space">=C2=A0</span><br>571 | | +--rw dead-interval?=
 uint32<span class=3D"Apple-converted-space">=C2=A0</span><br>572 | | +--rw=
 retransmit-interval? uint16<span class=3D"Apple-converted-space">=C2=A0</s=
pan><br><br>[minor] Why aren&#39;t rt-types:timer-value-* used for the *-ti=
mer/interval<span class=3D"Apple-converted-space">=C2=A0</span><br>definiti=
ons? I would have thought this was exactly the reason for the<span class=3D=
"Apple-converted-space">=C2=A0</span><br>definitions in rfc8294.<span class=
=3D"Apple-converted-space">=C2=A0</span><br><br>&lt;acee&gt; I&#39;d like t=
o use these types universally. However, YANG seems to have a restriction th=
at I can&#39;t further restrict the range. This really sucks. Will do what =
I can and make the best trade-off.<span class=3D"Apple-converted-space">=C2=
=A0</span></div></div></span></blockquote></div><p>I see you changed all, e=
xcept retransmit-interval and restart-interval=E2=80=A6. Just pointing it o=
ut in case you meant to.</p><p><br></p><p>...</p><div><div><blockquote type=
=3D"cite" class=3D"clean_bq" style=3D"font-family:Helvetica,Arial;font-size=
:13px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-=
spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-s=
pace:normal;word-spacing:0px"><span><div><div>...<span class=3D"Apple-conve=
rted-space">=C2=A0</span><br>1685 typedef if-state-type {<span class=3D"App=
le-converted-space">=C2=A0</span><br>1686 type enumeration {<span class=3D"=
Apple-converted-space">=C2=A0</span><br>...<span class=3D"Apple-converted-s=
pace">=C2=A0</span><br>1712 enum backup {<span class=3D"Apple-converted-spa=
ce">=C2=A0</span><br>1713 value &quot;6&quot;;<span class=3D"Apple-converte=
d-space">=C2=A0</span><br>1714 description<span class=3D"Apple-converted-sp=
ace">=C2=A0</span><br>1715 &quot;Interface Backup Designated Router (BDR) s=
tate.&quot;;<span class=3D"Apple-converted-space">=C2=A0</span><br>1716 }<s=
pan class=3D"Apple-converted-space">=C2=A0</span><br><br>[nit] s/backup/bdr=
 To match the other instances where a BDR is referenced<span class=3D"Apple=
-converted-space">=C2=A0</span><br><br>&lt;acee&gt; Good catch. Fixed.<span=
 class=3D"Apple-converted-space">=C2=A0</span><br><br>Thanks,<span class=3D=
"Apple-converted-space">=C2=A0</span><br>Acee<span class=3D"Apple-converted=
-space">=C2=A0</span></div></div></span></blockquote></div><p>What about th=
e rest of the comments??</p><p><a href=3D"https://mailarchive.ietf.org/arch=
/msg/lsr/LKvR2rfkPHJui_GMRerIdDNHkug">https://mailarchive.ietf.org/arch/msg=
/lsr/LKvR2rfkPHJui_GMRerIdDNHkug</a>=C2=A0</p><p><br></p><p>I don=E2=80=99t=
 know if it=E2=80=99s me, but several people seem to not receive the full l=
ength of my comments=E2=80=A6but they are complete in the archive=E2=80=A6s=
o I=E2=80=99m not sure that the problem is.=C2=A0 Please take a look at the=
 archive =E2=80=94 I have pasted comments after line 1716 below.=C2=A0 I am=
 changing the state to Revised ID Needed.</p><p>Thanks!</p><p>Alvaro.</p><p=
><br></p><p><br></p><p>...</p><p>2729 =C2=A0 =C2=A0 =C2=A0 container networ=
k {</p><p>2730 =C2=A0 =C2=A0 =C2=A0 =C2=A0 when &quot;derived-from-or-self(=
../../header/type, &quot;</p><p>2731 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0+ &quot;&#39;ospfv3-network-lsa&#39;)&quot; {</p><p>2732 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 description</p><p>2733 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 &quot;Only applies to Network LSAs.&quot;;</p><p>2734 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 }</p><p>2735 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quo=
t;Network LSA.&quot;;</p><p><br></p><p>[nit] Perhaps network-lsa could be a=
 better name.</p><p><br></p><p><br></p><p>...</p><p>3053 =C2=A0 =C2=A0 grou=
ping lsa-common {</p><p>3054 =C2=A0 =C2=A0 =C2=A0 description</p><p>3055 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Common fields for OSPF LSA represe=
ntation.&quot;;</p><p>3056 =C2=A0 =C2=A0 =C2=A0 leaf decoded-completed {</p=
><p>3057 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type boolean;</p><p>3058 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 description</p><p>3059 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &q=
uot;The OSPF LSA body is fully decoded.&quot;;</p><p>3060 =C2=A0 =C2=A0 =C2=
=A0 }</p><p><br></p><p>[minor] What is decoded-completed indicating?=C2=A0 =
Does it indicate that no errors where found, IOW, &quot;successful decoding=
&quot;?=C2=A0 Does it mean that the LSA has been decoded (but not an indica=
tion of success, or not)?=C2=A0 Is it a time-based indication; IOW, is ther=
e a chance that an LSA has not been processed when retrieving the informati=
on...would that result in false??</p><p><br></p><p><br></p><p>...</p><p>327=
1 =C2=A0 =C2=A0 grouping instance-fast-reroute-state {</p><p>3272 =C2=A0 =
=C2=A0 =C2=A0 description &quot;IPFRR state data grouping&quot;;</p><p><br>=
</p><p>[nit] s/IPFRR/IP-FRR =C2=A0 That is how the term is used everywhere =
else in this document.</p><p><br></p><p><br></p><p>...</p><p>3541 =C2=A0 =
=C2=A0 =C2=A0 leaf hello-interval {</p><p>3542 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
type uint16 {</p><p>3543 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 range &quot;1..=
65535&quot;;</p><p>3544 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</p><p>3545 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 description</p><p>3546 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 &quot;Interval between hello packets (seconds). It must</p><p>3547 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0be the same for all routers on the same n=
etwork.</p><p>3548 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Different netwo=
rks, implementations, and deployments</p><p>3549 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0will use different hello-intervals. A sample value</p><p>3=
550 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0for a LAN network would be 10 =
seconds.&quot;;</p><p>3551 =C2=A0 =C2=A0 =C2=A0 }</p><p><br></p><p>[minor] =
Some implementations support having a sub-second hello-interval...but with =
a timer in seconds that can&#39;t be done.</p><p><br></p><p><br></p><p>...<=
/p><p>3664 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf osp=
fv2-key {</p><p>3665 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 type string;</p><p>3666 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 description</p><p>3667 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;OSPFv2 authentication key.=
 The</p><p>3668 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0length of the key may be dependent on the</p><p>3669 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0cr=
yptographic algorithm. In cases where it is</p><p>3670 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0not, a key length o=
f at least 32 octets should</p><p>3671 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0be supported to allow for interope=
rability</p><p>3672 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0with strong keys.&quot;;</p><p><br></p><p>[major] Is t=
here a reference for the part about the &quot;key length of at least 32 oct=
ets should be supported to allow for interoperability with strong keys&quot=
;?</p><p><br></p><p><br></p><p>...</p><p>3719 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf ospfv3-key {</p><p>3720 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type string;</p><p>3721 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</p>=
<p>3722 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 &quot;OSPFv2 authentication key. The</p><p>3723 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0length of the key ma=
y be dependent on the</p><p>3724 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0cryptographic algorithm. In cases where i=
t is</p><p>3725 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0not, a key length of at least 32 octets should</p><p>3726 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0be supported to allow for interoperability</p><p>3727 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0with strong keys=
.&quot;;</p><p><br></p><p>[major] The same comment from ospfv2-key applies =
here.</p><p><br></p><p>[nit] s/OSPFv2 authentication key/OSPFv3 authenticat=
ion key</p><p><br></p><p><br></p><p>...</p><p>3856 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 leaf priority {</p><p>3857 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 type uint8 {</p><p>3858 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 range &quot;1..255&quot;;</p><p>3859 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 }</p><p>3860 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 descripti=
on &quot;Neighbor priority for DR election.&quot;;</p><p>3861 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 }</p><p><br></p><p>[minor] A range is included in thi=
s definition, but not in other priority statements before...should a range =
be included in those other definitions?</p><p><br></p><p>[minor] Why is 0 n=
ot applicable here?</p><p><br></p><p><br></p><p>...</p><p>3936 =C2=A0 =C2=
=A0 =C2=A0 leaf dead-timer {</p><p>3937 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type ui=
nt32;</p><p>3938 =C2=A0 =C2=A0 =C2=A0 =C2=A0 units &quot;seconds&quot;;</p>=
<p>3939 =C2=A0 =C2=A0 =C2=A0 =C2=A0 config false;</p><p>3940 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 description &quot;This timer tracks the remaining time before=
</p><p>3941 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0the neighbor is declared dead.&quot;;</p><p>3942 =C2=A0 =C2=A0=
 =C2=A0 }</p><p><br></p><p>[major] For *-timer: Is tracking the remaining t=
ime in seconds enough?=C2=A0 I would assume that ms would be the right unit=
.=C2=A0 Why seconds?</p><p><br></p><p><br></p><p>...</p><p>4390 =C2=A0 =C2=
=A0 =C2=A0 container preference {</p><p>4391 =C2=A0 =C2=A0 =C2=A0 =C2=A0 de=
scription &quot;Route preference config state.&quot;;</p><p><br></p><p>[min=
or] Maybe it&#39;s just me, but I don&#39;t understand what this piece of t=
he model does.=C2=A0 It seems like it can be used to configure which type o=
f route is preferred: external over intra-area, for example...but that doen=
s&#39;t make too much sense to me.=C2=A0 Is that the intended use?=C2=A0 Ca=
n you please give me an example of when this functionality could be used?</=
p><p><br></p><p>4392 =C2=A0 =C2=A0 =C2=A0 =C2=A0 choice scope {</p><p>4393 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</p><p>4394 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Options for expressing preference</p><p>4395=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0as single or multiple valu=
es.&quot;;</p><p>4396 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case single-value =
{</p><p>4397 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf all {</p><p>439=
8 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type uint8;</p><p>4399 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</p><p>4400 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Preference for i=
ntra-area, inter-area, and</p><p>4401 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0external routes.&quot;;</p><p>4402 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</p><p>4403 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 }</p><p>4404 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case multi-values {</p>=
<p>4405 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 choice granularity {</p><=
p>4406 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</p><p>4=
407 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Options f=
or expressing preference</p><p>4408 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0for intra-area and inter-area routes.&quot;;</p><p>=
4409 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case detail {</p><p>4=
410 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf intra-area=
 {</p><p>4411 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 type uint8;</p><p>4412 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 description</p><p>4413 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Preference for intra-area routes.&=
quot;;</p><p>4414 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }=
</p><p>4415 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf in=
ter-area {</p><p>4416 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 type uint8;</p><p>4417 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 description</p><p>4418 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Preference for inter-area r=
outes.&quot;;</p><p>4419 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 }</p><p>4420 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</p><=
p>4421 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 case coarse {</p><p=
>4422 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf internal=
 {</p><p>4423 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 type uint8;</p><p>4424 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 description</p><p>4425 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Preference for both intra-area and=
</p><p>4426 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0inter-area routes.&quot;;</p><p>4427 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</p><p>4428 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 }</p><p>4429 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 }</p><p>4430 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 leaf external {</p>=
<p>4431 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type uint8;</p><p>=
4432 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</p><p>443=
3 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Preference =
for AS external routes.&quot;;</p><p>4434 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 }</p><p>4435 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</p><p><br></p>=
<p>4437 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }</p><p>4438 =C2=A0 =C2=A0 =C2=A0 }</p>=
<p><br></p><p><br></p><p>...</p><p>4551 =C2=A0 =C2=A0 =C2=A0 container stub=
-router {</p><p>4552 =C2=A0 =C2=A0 =C2=A0 =C2=A0 if-feature stub-router;</p=
><p>4553 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quot;Set maximum metric c=
onfiguration&quot;;</p><p><br></p><p>4555 =C2=A0 =C2=A0 =C2=A0 =C2=A0 choic=
e trigger {</p><p>4556 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description</p><p=
>4557 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Specific triggers whi=
ch will enable stub</p><p>4558 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0router state.&quot;;</p><p>4559 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 co=
ntainer always {</p><p>4560 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 prese=
nce</p><p>4561 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 &quot;Enabl=
es unconditional stub router support&quot;;</p><p>4562 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 description</p><p>4563 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 &quot;Unconditional stub router state (advertise</p><p=
>4564 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0transit links =
with max metric&quot;;</p><p><br></p><p>[minor] s//MaxLinkMetric [rfc6897]<=
/p><p><br></p><p><br></p><p>...</p><p>5537 4.=C2=A0 Security Considerations=
</p><p>...</p><p>5552 =C2=A0 There are a number of data nodes defined in ie=
tf-ospf.yang module</p><p>5553 =C2=A0 that are writable/creatable/deletable=
 (i.e., config true, which is</p><p>5554 =C2=A0 the default).=C2=A0 These d=
ata nodes may be considered sensitive or</p><p>5555 =C2=A0 vulnerable in so=
me network environments.=C2=A0 Write operations (e.g.,</p><p>5556 =C2=A0 ed=
it-config) to these data nodes without proper protection can have a</p><p>5=
557 =C2=A0 negative effect on network operations.=C2=A0 For OSPF, the abili=
ty to</p><p>5558 =C2=A0 modify OSPF configuration will allow the entire OSP=
F domain to be</p><p>5559 =C2=A0 compromised including peering with unautho=
rized routers to misroute</p><p>5560 =C2=A0 traffic or mount a massive Deni=
al-of-Service (DoS) attack.=C2=A0 The</p><p>5561 =C2=A0 security considerat=
ions of OSPFv2 [RFC2328] and [RFC5340] apply to</p><p>5562 =C2=A0 the ietf-=
ospf.yang module as well.</p><p><br></p><p>[minor] s/OSPFv2 [RFC2328] and [=
RFC5340]/OSPFv2 [RFC2328] and OSPFv3 [RFC5340]</p><p><br></p><p>[major] How=
 do the &quot;security considerations of OSPFv2 [RFC2328] and [RFC5340] app=
ly to the ietf-ospf.yang module&quot;? =C2=A0rfc2328/rfc5340 only talk abou=
t authentication of the protocol exchange...</p><p><br></p><p><br></p><p>..=
.</p><p>5626 7.1.=C2=A0 Normative References</p><p>...</p><p>5679 =C2=A0 [R=
FC4750] =C2=A0Joyal, D., Ed., Galecki, P., Ed., Giacalone, S., Ed.,</p><p>5=
680 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Coltun, R., and F. Bake=
r, &quot;OSPF Version 2 Management</p><p>5681 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0Information Base&quot;, RFC 4750, DOI 10.17487/RFC4750,=
</p><p>5682 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0December 2006, =
&lt;<a href=3D"https://www.rfc-editor.org/info/rfc4750">https://www.rfc-edi=
tor.org/info/rfc4750</a>&gt;.</p><p>...</p><p>5731 =C2=A0 [RFC5643] =C2=A0J=
oyal, D., Ed. and V. Manral, Ed., &quot;Management Information</p><p>5732 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Base for OSPFv3&quot;, RFC =
5643, DOI 10.17487/RFC5643, August</p><p>5733 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A02009, &lt;<a href=3D"https://www.rfc-editor.org/info/rf=
c5643">https://www.rfc-editor.org/info/rfc5643</a>&gt;.</p><p>...</p><p>574=
5 =C2=A0 [RFC5880] =C2=A0Katz, D. and D. Ward, &quot;Bidirectional Forwardi=
ng Detection</p><p>5746 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0(BF=
D)&quot;, RFC 5880, DOI 10.17487/RFC5880, June 2010,</p><p>5747 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0&lt;<a href=3D"https://www.rfc-editor=
.org/info/rfc5880">https://www.rfc-editor.org/info/rfc5880</a>&gt;.</p><p><=
br></p><p>5749 =C2=A0 [RFC5881] =C2=A0Katz, D. and D. Ward, &quot;Bidirecti=
onal Forwarding Detection</p><p>5750 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0(BFD) for IPv4 and IPv6 (Single Hop)&quot;, RFC 5881,</p><p>5751 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0DOI 10.17487/RFC5881, June =
2010, &lt;<a href=3D"https://www.rfc-">https://www.rfc-</a></p><p>5752 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"http://editor.org/i=
nfo/rfc5881">editor.org/info/rfc5881</a>&gt;.</p><p><br></p><p>[minor] I th=
ink these references can be Informative.</p><p><br></p><p><br></p><p>...</p=
><p>5880 7.2.=C2=A0 Informative References</p><p><br></p><p>[major] All the=
 references in this section (except maybe rfc905) point at functionality in=
 the model...as the references above, these should be Normative as well.</p=
><p><br></p><p>These documents are already in the Downref registry: rfc5309=
, rfc5443, rfc5714, rfc6987.</p><p><br></p><p>The others are not, but I don=
&#39;t expect any issues in the IETF Last Call.</p><p><br></p></div></div><=
/div></body></html>

--0000000000000a3d44058c17fc56--


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Subject: [Lsr] IETF 105 LSR Working Slot Requests
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From: Tony Li <tony.li@tony.li>
Date: Tue, 25 Jun 2019 21:57:30 +0200
Message-ID: <CAMj-N0KaEGpLSJHjegSrSsTYh2wkWhnpcAzZd32My-oLfDaiVg@mail.gmail.com>
To: "Acee Lindem (acee)" <acee@cisco.com>
Cc: "lsr@ietf.org" <lsr@ietf.org>
Content-Type: multipart/alternative; boundary="0000000000006fb0a4058c2b57f3"
Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/nvTZzyNZsmhyCYTpIWhtrMaVX50>
Subject: Re: [Lsr] IETF 105 LSR Working Slot Requests
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--0000000000006fb0a4058c2b57f3
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Hi,

I would like to request three slots:

1) Draft: draft-ietf-lsr-dynamic-flooding
    Speaker: TBD (put myself if you need a place holder)
    Duration: 5 mins
    Purpose: Update working group on interim meeting and progress

2) Draft: draft-li-lsr-area-abstraction
     Speaker: TBD
     Duration: 5 mins
     Purpose: Update WG on progress towards collaboration

3) Draft: draft-li-lsr-hierarchical-isis
     Speaker: myself
     Duration: 5 mins
     Purpose: Update WG on revisions and ask for WG adoption

Tony


On Tue, Jun 25, 2019 at 12:30 AM Acee Lindem (acee) <acee@cisco.com> wrote:

> We are now accepting agenda requests for the LSR Working Group meeting
> IETF 105. Please send us your request for a presentation slot , indicating
> draft name, speaker, and desired duration (covering presentation and
> discussion). If it is not the first presentation of the draft, please give
> a reason why it is required to have a new presentation slot.
>
>
>
> Thanks,
> Acee
>
>
>
>
> _______________________________________________
> Lsr mailing list
> Lsr@ietf.org
> https://www.ietf.org/mailman/listinfo/lsr
>

--0000000000006fb0a4058c2b57f3
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Content-Transfer-Encoding: quoted-printable

<div><br></div><div dir=3D"auto">Hi,</div><div dir=3D"auto"><br></div><div =
dir=3D"auto">I would like to request three slots:</div><div dir=3D"auto"><b=
r></div><div dir=3D"auto">1) Draft: draft-ietf-lsr-dynamic-flooding</div><d=
iv dir=3D"auto">=C2=A0 =C2=A0 Speaker: TBD (put myself if you need a place =
holder)</div><div dir=3D"auto">=C2=A0 =C2=A0 Duration: 5 mins</div><div><di=
v dir=3D"auto">=C2=A0 =C2=A0 Purpose: Update working group on interim meeti=
ng and progress</div><div dir=3D"auto"><br></div><div dir=3D"auto">2) Draft=
: draft-li-lsr-area-abstraction</div><div dir=3D"auto">=C2=A0 =C2=A0 =C2=A0=
Speaker: TBD</div><div dir=3D"auto">=C2=A0 =C2=A0 =C2=A0Duration: 5 mins</d=
iv><div dir=3D"auto">=C2=A0 =C2=A0 =C2=A0Purpose: Update WG on progress tow=
ards collaboration</div><div dir=3D"auto"><br></div><div dir=3D"auto">3) Dr=
aft: draft-li-lsr-hierarchical-isis</div><div dir=3D"auto">=C2=A0 =C2=A0 =
=C2=A0Speaker: myself</div><div dir=3D"auto">=C2=A0 =C2=A0 =C2=A0Duration: =
5 mins</div><div dir=3D"auto">=C2=A0 =C2=A0 =C2=A0Purpose: Update WG on rev=
isions and ask for WG adoption</div><div dir=3D"auto"><br></div><div dir=3D=
"auto">Tony</div><div dir=3D"auto"><br></div><br><div class=3D"gmail_quote"=
><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Jun 25, 2019 at 12:30 AM Ace=
e Lindem (acee) &lt;<a href=3D"mailto:acee@cisco.com">acee@cisco.com</a>&gt=
; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .=
8ex;border-left:1px #ccc solid;padding-left:1ex">





<div lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72">
<div class=3D"m_2994204960119263189WordSection1">
<p class=3D"MsoNormal"><span style=3D"color:black">We are now accepting age=
nda requests for the LSR Working Group meeting IETF 105. Please send us you=
r=C2=A0request for a presentation=C2=A0slot=C2=A0, indicating draft name, s=
peaker, and desired duration (covering presentation
 and discussion). If it is not the first presentation of the draft, please =
give a=C2=A0reason why it is=C2=A0required to have a new presentation=C2=A0=
slot.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black"><u></u>=C2=A0<u></u></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"color:black">Thanks,<br>
Acee<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black">=C2=A0<u></u><u></u></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"font-size:14.0pt"><u></u>=C2=A0<u></u=
></span></p>
</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>

--0000000000006fb0a4058c2b57f3--


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From: "Aijun Wang" <wangaijun@tsinghua.org.cn>
To: "'Les Ginsberg \(ginsberg\)'" <ginsberg@cisco.com>, "'Acee Lindem \(acee\)'" <acee@cisco.com>, <draft-ietf-lsr-pce-discovery-security-support@ietf.org>
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Hi, Les:

=20

For the situation that PCE is not an LSR, this draft also provides some =
help for other LSRs to find the PCE-----one can configure the PCE =
related info on one of the LSR/PCC, and then this LSR/PCC flood such =
information to other LSRs/PCCs? Or else, every PCC/LSR should know the =
PCE by manually configuration? This is applicable for RFC5088/5089.

The restriction stated in Section =
<https://tools.ietf.org/html/rfc5088#section-4>  4 of [RFC5088] and =
Section <https://tools.ietf.org/html/rfc5089#section-4>  4 of [RFC5089] =
seems not reasonable now, because the security communication =
consideration between PCE and PCC is important, as that pointed out in =
this draft.
=20
I think we can have two options for such confliction avoidance:
1. Put this draft in individual document, update the RFC5088/5089 in =
their bis version(just to eliminate the above restriction)----Easy for =
the author, not for the reader, but is the most common way for such =
situation?
2. Merger this draft with RFC5088/RFC5089 in their bis version-----As =
Les pointed out, will be easier for the reader. But how to arrange the =
author list?
=20
And another opinion is that IGP is suitable to transfer the information =
that needed by routers within the IGP domain. Such piggyback action can =
simplify the operation of network. Or else, the network should operate =
different protocols to accomplish such task.

=20

Best Regards.

=20

Aijun Wang

Network R&D and Operation Support Department

China Telecom Corporation Limited Beijing Research Institute,Beijing, =
China.

=20

-----=E9=82=AE=E4=BB=B6=E5=8E=9F=E4=BB=B6-----
=E5=8F=91=E4=BB=B6=E4=BA=BA: Les Ginsberg (ginsberg) =
[mailto:ginsberg@cisco.com]=20
=E5=8F=91=E9=80=81=E6=97=B6=E9=97=B4: 2019=E5=B9=B46=E6=9C=8823=E6=97=A5 =
8:58
=E6=94=B6=E4=BB=B6=E4=BA=BA: Acee Lindem (acee); =
draft-ietf-lsr-pce-discovery-security-support@ietf.org
=E6=8A=84=E9=80=81: lsr@ietf.org
=E4=B8=BB=E9=A2=98: Re: [Lsr] I-D Action: =
draft-ietf-lsr-pce-discovery-security-support-01.txt

=20

Acee -

=20

Thanx for reviving this thread.

=20

In fairness, Qin did respond - and we exchanged a couple of emails on =
this thread - though I would not say that we had reached closure.

=20

He also sent an email to PCE WG asking for an update on their position - =
but to date I have seen no response to that.

=20

So for me - this topic is still open for further discussion - both by =
the authors and the LSR/PCE WGs.

=20

  Les

=20

> -----Original Message-----

> From: Acee Lindem (acee)

> Sent: Saturday, June 22, 2019 1:36 PM

> To:  <mailto:draft-ietf-lsr-pce-discovery-security-support@ietf.org> =
draft-ietf-lsr-pce-discovery-security-support@ietf.org

> Cc:  <mailto:lsr@ietf.org> lsr@ietf.org; Les Ginsberg (ginsberg) < =
<mailto:ginsberg@cisco.com> ginsberg@cisco.com>

> Subject: Re: [Lsr] I-D Action:=20

> draft-ietf-lsr-pce-discovery-security-support-

> 01.txt

>=20

> Authors - can you respond to Les' comments?

> Thanks,

> Acee

>=20

> =EF=BB=BFOn 6/3/19, 2:22 AM, "Lsr on behalf of Les Ginsberg =
(ginsberg)" <lsr-=20

>  <mailto:bounces@ietf.org> bounces@ietf.org on behalf of  =
<mailto:ginsberg@cisco.com> ginsberg@cisco.com> wrote:

>=20

>     A few - somewhat tardy - concerns about this draft.

>=20

>     1)During adoption call it was mentioned that PCE WG had not taken=20

> a position on this draft. Since I don't follow PCE WG (apologies) I=20

> need to ask - has that status changed??

>=20

>     2)As discussed during the adoption call, the draft removes the=20

> restriction specified in RFC 5088/5089 of not allowing further PCE=20

> related advertisements in Router Capability TLV/Router Information =
LSA.

>     Acee had mentioned that he thought this was no longer a concern=20

> because in RFC 7770 multiple OSPF Router Information LSA support was =
introduced.

> But this is really not relevant to the reason that the restriction was =


> originally introduced.

>=20

>     The restriction was introduced because of general concern that=20

> using IGPs to advertise information not directly relevant to the=20

> operation of the IGP as a routing protocol is sub-optimal and=20

> negatively impacts the performance of the primary IGP functions.

>=20

>     I am aware that this is a line that has been crossed (in modest=20

> ways) more than once - and I am not categorically opposing the=20

> extensions proposed - but I do wonder if this is the most appropriate=20

> way to advertise the new attributes - particularly since this does not =


> solve the general case - it only applies when the PCE is also an LSR.=20

> I think a broader discussion of this issue is warranted.

>=20

>     3)If the draft goes forward in its current form, it updates RFC=20

> 5088/5089 in a significant way (the removal of restriction against=20

> additional PCE related IGP

> advertisements) - in which case I wonder if it would be better to=20

> write an RFC

> 5088/89 bis document rather than an extension document.

>=20

>     And, BTW, do you know why the HTML version of the document has no=20

> table of contents?

>=20

>        Les

>=20

>=20

>     > -----Original Message-----

>     > From: Lsr < <mailto:lsr-bounces@ietf.org> lsr-bounces@ietf.org> =
On Behalf Of  <mailto:internet-drafts@ietf.org> internet-drafts@ietf.org

>     > Sent: Sunday, June 02, 2019 8:45 PM

>     > To:  <mailto:i-d-announce@ietf.org> i-d-announce@ietf.org

>     > Cc:  <mailto:lsr@ietf.org> lsr@ietf.org

>     > Subject: [Lsr] I-D Action:=20

> draft-ietf-lsr-pce-discovery-security-support-

> 01.txt

>     >

>     >

>     > A New Internet-Draft is available from the on-line=20

> Internet-Drafts directories.

>     > This draft is a work item of the Link State Routing WG of the =
IETF.

>     >

>     >         Title           : IGP extension for PCEP security =
capability support in the

> PCE

>     > discovery

>     >         Authors         : Diego R. Lopez

>     >                           Qin Wu

>     >                           Dhruv Dhody

>     >                           Michael Wang

>     >                           Daniel King

>     >          Filename        : =
draft-ietf-lsr-pce-discovery-security-support-01.txt

>     >          Pages           : 10

>     >          Date            : 2019-06-02

>     >

>     > Abstract:

>     >    When a Path Computation Element (PCE) is a Label Switching =
Router

>     >    (LSR) participating in the Interior Gateway Protocol (IGP), =
or even a

>     >    server participating in IGP, its presence and path =
computation

>     >    capabilities can be advertised using IGP flooding.  The IGP

>     >    extensions for PCE discovery (RFC 5088 and RFC 5089) define a =
method

>     >    to advertise path computation capabilities using IGP flooding =
for

>     >    OSPF and IS-IS respectively.  However these specifications =
lack a

>     >    method to advertise PCEP security (e.g., Transport Layer

>     >    Security(TLS), TCP Authentication Option (TCP-AO)) support

>     >    capability.

>     >

>     >    This document proposes new capability flag bits for =
PCE-CAP-FLAGS

>     >    sub-TLV that can be announced as attribute in the IGP =
advertisement

>     >    to distribute PCEP security support information.  In =
addition, this

>     >    document updates RFC 5088 and RFC 5089 to allow advertisement =
of

> Key

>     >    ID or Key Chain Name Sub-TLV to support TCP AO security =
capability.

>     >

>     >

>     > The IETF datatracker status page for this draft is:

>     >  =
<https://datatracker.ietf.org/doc/draft-ietf-lsr-pce-discovery-security->=
 https://datatracker.ietf.org/doc/draft-ietf-lsr-pce-discovery-security-

>     > support/

>     >

>     > There are also htmlized versions available at:

>     >=20

>  =
<https://tools.ietf.org/html/draft-ietf-lsr-pce-discovery-security-supp> =
https://tools.ietf.org/html/draft-ietf-lsr-pce-discovery-security-supp

> ort-

> 01

>     >=20

>  <https://datatracker.ietf.org/doc/html/draft-ietf-lsr-pce-discovery-> =
https://datatracker.ietf.org/doc/html/draft-ietf-lsr-pce-discovery-

> security-

>     > support-01

>     >

>     > A diff from the previous version is available at:

>     >  =
<https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-lsr-pce-discovery-securit=
y-> =
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-lsr-pce-discovery-security=
-

>     > support-01

>     >

>     >

>     > Please note that it may take a couple of minutes from the time=20

> 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/> =
ftp://ftp.ietf.org/internet-drafts/

>     >

>     > _______________________________________________

>     > Lsr mailing list

>     >  <mailto:Lsr@ietf.org> Lsr@ietf.org

>     >  <https://www.ietf.org/mailman/listinfo/lsr> =
https://www.ietf.org/mailman/listinfo/lsr

>=20

>     _______________________________________________

>     Lsr mailing list

>      <mailto:Lsr@ietf.org> Lsr@ietf.org

>      <https://www.ietf.org/mailman/listinfo/lsr> =
https://www.ietf.org/mailman/listinfo/lsr

>=20

=20

_______________________________________________

Lsr mailing list

 <mailto:Lsr@ietf.org> Lsr@ietf.org

 <https://www.ietf.org/mailman/listinfo/lsr> =
https://www.ietf.org/mailman/listinfo/lsr


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vlink=3Dpurple style=3D'text-justify-trim:punctuation'><div =
class=3DWordSection1><p class=3DMsoPlainText><span lang=3DEN-US>Hi, =
Les:<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>For the situation that PCE is not an LSR, this draft also =
provides some help for other LSRs to find the PCE-----one can configure =
the PCE related info on one of the LSR/PCC, and then this LSR/PCC flood =
such information to other LSRs/PCCs? Or else, every PCC/LSR should know =
the PCE by manually configuration? This is applicable for =
RFC5088/5089.<o:p></o:p></span></p><pre><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif"'>The =
restriction stated in </span><span lang=3DEN-US =
style=3D'font-size:10.0pt;color:black'><a =
href=3D"https://tools.ietf.org/html/rfc5088#section-4">Section&nbsp;4 of =
[RFC5088]</a> and <a =
href=3D"https://tools.ietf.org/html/rfc5089#section-4">Section&nbsp;4 of =
[RFC5089]</a> </span><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif"'>seems not =
reasonable now, because the security communication consideration between =
PCE and PCC is important, as that pointed out in this =
draft.<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif"'><o:p>&nbsp;=
</o:p></span></pre><pre><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif"'>I think we =
can have two options for such confliction =
avoidance:<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif"'>1. Put =
this draft in individual document, update the RFC5088/5089 in their bis =
version(just to eliminate the above restriction)----Easy for the author, =
not for the reader, but is the most common way for such =
situation?<o:p></o:p></span></pre><pre><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif"'>2. Merger =
this draft with RFC5088/RFC5089 in their bis version-----As Les pointed =
out, will be easier for the reader. But how to arrange the author =
list?</span><span lang=3DEN-US =
style=3D'font-size:10.0pt;color:black'><o:p></o:p></span></pre><pre><span=
 lang=3DEN-US =
style=3D'font-size:10.0pt;color:black'><o:p>&nbsp;</o:p></span></pre><pre=
><span lang=3DEN-US =
style=3D'font-size:10.5pt;font-family:"Calibri","sans-serif"'>And =
another opinion is that IGP is suitable to transfer the information that =
needed by routers within the IGP domain. Such piggyback action can =
simplify the operation of network. Or else, the network should operate =
different protocols to accomplish such task.<o:p></o:p></span></pre><p =
class=3DMsoNormal><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>Best =
Regards.<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>Aijun Wang<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>Network R&amp;D and Operation Support =
Department<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>China Telecom Corporation Limited Beijing Research =
Institute,Beijing, China.<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>-----</span><span =
style=3D'font-family:=E5=AE=8B=E4=BD=93'>=E9=82=AE=E4=BB=B6=E5=8E=9F=E4=BB=
=B6</span><span lang=3DEN-US>-----<br></span><span =
style=3D'font-family:=E5=AE=8B=E4=BD=93'>=E5=8F=91=E4=BB=B6=E4=BA=BA</spa=
n><span lang=3DEN-US>: Les Ginsberg (ginsberg) =
[mailto:ginsberg@cisco.com] <br></span><span =
style=3D'font-family:=E5=AE=8B=E4=BD=93'>=E5=8F=91=E9=80=81=E6=97=B6=E9=97=
=B4</span><span lang=3DEN-US>: 2019</span><span =
style=3D'font-family:=E5=AE=8B=E4=BD=93'>=E5=B9=B4</span><span =
lang=3DEN-US>6</span><span =
style=3D'font-family:=E5=AE=8B=E4=BD=93'>=E6=9C=88</span><span =
lang=3DEN-US>23</span><span =
style=3D'font-family:=E5=AE=8B=E4=BD=93'>=E6=97=A5</span><span =
lang=3DEN-US> 8:58<br></span><span =
style=3D'font-family:=E5=AE=8B=E4=BD=93'>=E6=94=B6=E4=BB=B6=E4=BA=BA</spa=
n><span lang=3DEN-US>: Acee Lindem (acee); =
draft-ietf-lsr-pce-discovery-security-support@ietf.org<br></span><span =
style=3D'font-family:=E5=AE=8B=E4=BD=93'>=E6=8A=84=E9=80=81</span><span =
lang=3DEN-US>: lsr@ietf.org<br></span><span =
style=3D'font-family:=E5=AE=8B=E4=BD=93'>=E4=B8=BB=E9=A2=98</span><span =
lang=3DEN-US>: Re: [Lsr] I-D Action: =
draft-ietf-lsr-pce-discovery-security-support-01.txt<o:p></o:p></span></p=
><p class=3DMsoPlainText><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>Acee -<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>Thanx for reviving this thread.<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>In fairness, Qin did respond - =
and we exchanged a couple of emails on this thread - though I would not =
say that we had reached closure.<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>He also sent an email to PCE WG =
asking for an update on their position - but to date I have seen no =
response to that.<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>So for me - this topic is still open for further discussion =
- both by the authors and the LSR/PCE WGs.<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>=C2=A0 =
Les<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; -----Original Message-----<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; From: Acee Lindem =
(acee)<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; Sent: Saturday, June 22, 2019 1:36 =
PM<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
To: <a =
href=3D"mailto:draft-ietf-lsr-pce-discovery-security-support@ietf.org"><s=
pan =
style=3D'color:windowtext;text-decoration:none'>draft-ietf-lsr-pce-discov=
ery-security-support@ietf.org</span></a><o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; Cc: <a =
href=3D"mailto:lsr@ietf.org"><span =
style=3D'color:windowtext;text-decoration:none'>lsr@ietf.org</span></a>; =
Les Ginsberg (ginsberg) &lt;<a href=3D"mailto:ginsberg@cisco.com"><span =
style=3D'color:windowtext;text-decoration:none'>ginsberg@cisco.com</span>=
</a>&gt;<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; Subject: Re: [Lsr] I-D Action: =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
draft-ietf-lsr-pce-discovery-security-support-<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; =
01.txt<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; <o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; Authors - can you respond to Les' =
comments?<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; Thanks,<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; =
Acee<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; <o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; =EF=BB=BFOn 6/3/19, 2:22 AM, &quot;Lsr on behalf of =
Les Ginsberg (ginsberg)&quot; &lt;lsr- <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; <a =
href=3D"mailto:bounces@ietf.org"><span =
style=3D'color:windowtext;text-decoration:none'>bounces@ietf.org</span></=
a> on behalf of <a href=3D"mailto:ginsberg@cisco.com"><span =
style=3D'color:windowtext;text-decoration:none'>ginsberg@cisco.com</span>=
</a>&gt; wrote:<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; <o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 A few - somewhat tardy - =
concerns about this draft.<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
1)During adoption call it was mentioned that PCE WG had not taken =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; a =
position on this draft. Since I don't follow PCE WG (apologies) I =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
need to ask - has that status changed??<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
2)As discussed during the adoption call, the draft removes the =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
restriction specified in RFC 5088/5089 of not allowing further PCE =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
related advertisements in Router Capability TLV/Router Information =
LSA.<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 Acee had mentioned that he =
thought this was no longer a concern <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; because in RFC 7770 =
multiple OSPF Router Information LSA support was =
introduced.<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; But this is really not relevant to the reason that the =
restriction was <o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; originally introduced.<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 The =
restriction was introduced because of general concern that =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
using IGPs to advertise information not directly relevant to the =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
operation of the IGP as a routing protocol is sub-optimal and =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
negatively impacts the performance of the primary IGP =
functions.<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; <o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 I am aware that this is a line =
that has been crossed (in modest <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; ways) more than once - and =
I am not categorically opposing the <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; extensions proposed - but I =
do wonder if this is the most appropriate <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; way to advertise the new =
attributes - particularly since this does not <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; solve the general case - it =
only applies when the PCE is also an LSR. <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; I think a broader =
discussion of this issue is warranted.<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
3)If the draft goes forward in its current form, it updates RFC =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
5088/5089 in a significant way (the removal of restriction against =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
additional PCE related IGP<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; advertisements) - in which =
case I wonder if it would be better to <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; write an =
RFC<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
5088/89 bis document rather than an extension =
document.<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; <o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 And, BTW, do you know why the =
HTML version of the document has no <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; table of =
contents?<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; <o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
Les<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; -----Original =
Message-----<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; From: Lsr &lt;<a =
href=3D"mailto:lsr-bounces@ietf.org"><span =
style=3D'color:windowtext;text-decoration:none'>lsr-bounces@ietf.org</spa=
n></a>&gt; On Behalf Of <a =
href=3D"mailto:internet-drafts@ietf.org"><span =
style=3D'color:windowtext;text-decoration:none'>internet-drafts@ietf.org<=
/span></a><o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; Sent: Sunday, June 02, =
2019 8:45 PM<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; To: <a =
href=3D"mailto:i-d-announce@ietf.org"><span =
style=3D'color:windowtext;text-decoration:none'>i-d-announce@ietf.org</sp=
an></a><o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; Cc: <a =
href=3D"mailto:lsr@ietf.org"><span =
style=3D'color:windowtext;text-decoration:none'>lsr@ietf.org</span></a><o=
:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; Subject: [Lsr] I-D =
Action: <o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt; =
draft-ietf-lsr-pce-discovery-security-support-<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; =
01.txt<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt;<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; A New Internet-Draft is =
available from the on-line <o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt; Internet-Drafts =
directories.<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; This draft is a work item =
of the Link State Routing WG of the IETF.<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt;<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0 =
=C2=A0&gt;=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
Title=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 : IGP =
extension for PCEP security capability support in =
the<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
PCE<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; =
discovery<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt;=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
Authors=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 : Diego R. =
Lopez<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt;=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 Qin Wu<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt;=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 Dhruv Dhody<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt;=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 Michael Wang<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt;=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 Daniel King<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt; =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
Filename=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 : =
draft-ietf-lsr-pce-discovery-security-support-01.txt<o:p></o:p></span></p=
><p class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt; =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
Pages=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 : =
10<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; =
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =
Date=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 : =
2019-06-02<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt; Abstract:<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 When a =
Path Computation Element (PCE) is a Label Switching =
Router<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 (LSR) =
participating in the Interior Gateway Protocol (IGP), or even =
a<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 server =
participating in IGP, its presence and path =
computation<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 =
capabilities can be advertised using IGP flooding.=C2=A0 The =
IGP<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 =
extensions for PCE discovery (RFC 5088 and RFC 5089) define a =
method<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 to =
advertise path computation capabilities using IGP flooding =
for<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 OSPF =
and IS-IS respectively.=C2=A0 However these specifications lack =
a<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 method =
to advertise PCEP security (e.g., Transport =
Layer<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 =
Security(TLS), TCP Authentication Option (TCP-AO)) =
support<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 =
capability.<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;<o:p></o:p></span></p><p =
class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
&gt;=C2=A0=C2=A0=C2=A0 This document proposes new capability flag bits =
for PCE-CAP-FLAGS<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 sub-TLV =
that can be announced as attribute in the IGP =
advertisement<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 to =
distribute PCEP security support information.=C2=A0 In addition, =
this<o:p></o:p></span></p><p class=3DMsoPlainText><span =
lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;=C2=A0=C2=A0=C2=A0 =
document updates RFC 5088 and RFC 5089 to allow advertisement =
of<o:p></o:p></span></p><p class=3DMsoPlainText><span lang=3DEN-US>&gt; =
Key<o:p></o:p></span></p><p class=3DMsoPlainText><span =
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Key Chain Name Sub-TLV to support TCP AO security =
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lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt;<o:p></o:p></span></p><p =
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lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 &gt; The IETF datatracker =
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class=3DMsoPlainText><span lang=3DEN-US>&gt;=C2=A0=C2=A0=C2=A0=C2=A0 =
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href=3D"https://datatracker.ietf.org/doc/draft-ietf-lsr-pce-discovery-sec=
urity-"><span =
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Subject: [Lsr] I-D Action: draft-ietf-ospf-xaf-te-06.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Link State Routing WG of the IETF.

        Title           : OSPF Routing with Cross-Address Family Traffic Engineering Tunnels
        Authors         : Anton Smirnov
                          Alvaro Retana
                          Michael Barnes
	Filename        : draft-ietf-ospf-xaf-te-06.txt
	Pages           : 8
	Date            : 2019-06-26

Abstract:
   When using Traffic Engineering (TE) in a dual-stack IPv4/IPv6
   network, the Multiprotocol Label Switching (MPLS) TE Label Switched
   Paths (LSP) infrastructure may be duplicated, even if the destination
   IPv4 and IPv6 addresses belong to the same remote router.  In order
   to achieve an integrated MPLS TE LSP infrastructure, OSPF routes must
   be computed over MPLS TE tunnels created using information propagated
   in another OSPF instance.  This issue is solved by advertising cross-
   address family (X-AF) OSPF TE information.

   This document describes an update to RFC5786 that allows for the easy
   identification of a router's local X-AF IP addresses.


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

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-ospf-xaf-te-06
https://datatracker.ietf.org/doc/html/draft-ietf-ospf-xaf-te-06

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ospf-xaf-te-06


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

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


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Alvaro Retana <aretana.ietf@gmail.com>, "draft-ietf-ospf-yang@ietf.org" <draft-ietf-ospf-yang@ietf.org>
CC: "lsr@ietf.org" <lsr@ietf.org>, "stephane.litkowski@orange.com" <stephane.litkowski@orange.com>, "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>
Thread-Topic: AD Review for draft-ietf-ospf-yang-21
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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Tony Li <tony.li@tony.li>
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Thread-Topic: [Lsr] IETF 105 LSR Working Slot Requests
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Subject: Re: [Lsr] IETF 105 LSR Working Slot Requests
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Thread-Topic: [Lsr] IETF 105 LSR Working Slot Requests
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To: "Acee Lindem (acee)" <acee@cisco.com>,  "draft-ietf-ospf-yang@ietf.org" <draft-ietf-ospf-yang@ietf.org>
Cc: "lsr@ietf.org" <lsr@ietf.org>,  "stephane.litkowski@orange.com" <stephane.litkowski@orange.com>, "lsr-chairs@ietf.org" <lsr-chairs@ietf.org>
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Subject: Re: [Lsr] AD Review for draft-ietf-ospf-yang-21
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On June 26, 2019 at 11:53:28 AM, Acee Lindem (acee) (acee@cisco.com) wrote:

Acee:

Hi!

This may take a couple iterations. See inline.

I only have one response. :-)


...

...

3936       leaf dead-timer {

3937         type uint32;

3938         units "seconds";

3939         config false;

3940         description "This timer tracks the remaining time before

3941                      the neighbor is declared dead.";

3942       }



[major] For *-timer: Is tracking the remaining time in seconds enough?  I
would assume that ms would be the right unit.  Why seconds?

<acee> Because sub-second hellos was a bad idea =E2=80=93 three words: B-F-=
D=E2=80=A6'

This question is not about sub-second Hellos=E2=80=A6it=E2=80=99s about the=
 *remaining
time*.  Even if Hellos are x seconds apart, the =E2=80=9Cremaining time bef=
ore the
neighbor is declared dead=E2=80=9D can still be in ms, right?  Why not?  No=
te that
there are other places in the model that are characterized as tracking the
remaining time.


Thanks!!

Alvaro.

--00000000000092765c058c3f0424
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<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div style=3D"margin:0px"><font=
 face=3D"Helvetica">On June 26, 2019 at 11:53:28 AM, Acee Lindem (acee) (<a=
 href=3D"mailto:acee@cisco.com">acee@cisco.com</a>) wrote:</font></div><div=
 style=3D"margin:0px"><font face=3D"Helvetica"><br></font></div><div style=
=3D"margin:0px"><font face=3D"Helvetica">Acee:</font></div><div style=3D"ma=
rgin:0px"><font face=3D"Helvetica"><br></font></div><div style=3D"margin:0p=
x"><font face=3D"Helvetica">Hi!</font></div><div style=3D"margin:0px"><font=
 face=3D"Helvetica"><br></font></div> <div><blockquote type=3D"cite" class=
=3D"clean_bq" style=3D"font-variant-caps:normal;letter-spacing:normal;text-=
align:start;text-indent:0px;text-transform:none;white-space:normal;word-spa=
cing:0px"><span><div lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><font fa=
ce=3D"Helvetica"><div></div><div><div class=3D"WordSection1"><p class=3D"Ms=
oNormal">This may take a couple iterations. See inline.</p></div></div></fo=
nt></div></span></blockquote></div><p><font face=3D"Helvetica">I only have =
one response. :-)</font></p><p><font face=3D"Helvetica"><br></font></p><p><=
font face=3D"Helvetica">...</font></p><div><blockquote type=3D"cite" class=
=3D"clean_bq" style=3D"font-variant-caps:normal;letter-spacing:normal;text-=
align:start;text-indent:0px;text-transform:none;white-space:normal;word-spa=
cing:0px"><span><div lang=3D"EN-US" link=3D"blue" vlink=3D"purple"><div><di=
v class=3D"WordSection1"><div><div><div><font face=3D"Helvetica"><p style=
=3D"margin-left:0.5in">...</p><p style=3D"margin-left:0.5in">3936 =C2=A0 =
=C2=A0 =C2=A0 leaf dead-timer {</p><p style=3D"margin-left:0.5in">3937 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 type uint32;</p><p style=3D"margin-left:0.5in">393=
8 =C2=A0 =C2=A0 =C2=A0 =C2=A0 units &quot;seconds&quot;;</p><p style=3D"mar=
gin-left:0.5in">3939 =C2=A0 =C2=A0 =C2=A0 =C2=A0 config false;</p><p style=
=3D"margin-left:0.5in">3940 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quot;T=
his timer tracks the remaining time before</p><p style=3D"margin-left:0.5in=
">3941 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0the neighbor is declared dead.&quot;;</p><p style=3D"margin-left:=
0.5in">3942 =C2=A0 =C2=A0 =C2=A0 }</p><p style=3D"margin-left:0.5in">=C2=A0=
</p><p style=3D"margin-left:0.5in">[major] For *-timer: Is tracking the rem=
aining time in seconds enough?=C2=A0 I would assume that ms would be the ri=
ght unit.=C2=A0 Why seconds?</p><p>&lt;acee&gt; Because sub-second hellos w=
as a bad idea =E2=80=93 three words: B-F-D=E2=80=A6&#39;</p></font></div></=
div></div></div></div></div></span></blockquote></div><p><font face=3D"Helv=
etica">This question is not about sub-second Hellos=E2=80=A6it=E2=80=99s ab=
out the *remaining time*.=C2=A0 Even if Hellos are x seconds apart, the =E2=
=80=9Cremaining time before the neighbor is declared dead=E2=80=9D can stil=
l be in ms, right?=C2=A0 Why not?=C2=A0 Note that there are other places in=
 the model that are characterized as tracking the remaining time.</font></p=
><p><font face=3D"Helvetica"><br></font></p><p><font face=3D"Helvetica">Tha=
nks!!</font></p><p><font face=3D"Helvetica">Alvaro.</font></p></body></html=
>

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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Alvaro Retana <aretana.ietf@gmail.com>, "draft-ietf-ospf-yang@ietf.org" <draft-ietf-ospf-yang@ietf.org>
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On June 26, 2019 at 9:31:05 PM, Acee Lindem (acee) (acee@cisco.com) wrote:

...

...

3936       leaf dead-timer {

3937         type uint32;

3938         units "seconds";

3939         config false;

3940         description "This timer tracks the remaining time before

3941                      the neighbor is declared dead.";

3942       }



[major] For *-timer: Is tracking the remaining time in seconds enough?  I
would assume that ms would be the right unit.  Why seconds?

<acee> Because sub-second hellos was a bad idea =E2=80=93 three words: B-F-=
D=E2=80=A6'

This question is not about sub-second Hellos=E2=80=A6it=E2=80=99s about the=
 *remaining
time*.  Even if Hellos are x seconds apart, the =E2=80=9Cremaining time bef=
ore the
neighbor is declared dead=E2=80=9D can still be in ms, right?  Why not?  No=
te that
there are other places in the model that are characterized as tracking the
remaining time.

I don=E2=80=99t feel that strongly. However, it would seem that one would u=
se the
same granularity as the configuration. No?

I wouldn=E2=80=99t think so.  If I was an operator I would like to know if =
there
are 500ms left before my neighbor dies, and not just 1 or 0.  I think this
may also be useful for troubleshooting.

But I=E2=80=99m not an operator=E2=80=A6

Alvaro.

We found that the RFC 8294 timer types aren=E2=80=99t good for =E2=80=9Ccon=
fig true=E2=80=9D values
since the values =E2=80=9Cinfinity=E2=80=9D and =E2=80=9Cnot-set=E2=80=9D a=
re included in the union. Hence,
they lend themselves better to operational state than configurable values.

--000000000000e2926d058c4cd49c
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<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style>=
</head><body style=3D"word-wrap:break-word"><div style=3D"margin:0px"><font=
 face=3D"Helvetica"><br></font></div> <font face=3D"Helvetica"><br></font><=
p class=3D"airmail_on"><font face=3D"Helvetica">On June 26, 2019 at 9:31:05=
 PM, Acee Lindem (acee) (<a href=3D"mailto:acee@cisco.com">acee@cisco.com</=
a>) wrote:</font></p> <div><blockquote type=3D"cite" class=3D"clean_bq" sty=
le=3D"font-variant-caps:normal;letter-spacing:normal;text-align:start;text-=
indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span><=
div><font face=3D"Helvetica"><p style=3D"color:rgb(0,0,0);font-variant-caps=
:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transfo=
rm:none;white-space:normal;word-spacing:0px;margin-left:0.5in">...</p><div =
style=3D"color:rgb(0,0,0);font-variant-caps:normal;letter-spacing:normal;te=
xt-align:start;text-indent:0px;text-transform:none;white-space:normal;word-=
spacing:0px"><blockquote class=3D"clean_bq" style=3D"margin-left:0px;paddin=
g-left:6px;margin-right:0px;padding-right:0px;border-left-style:solid;color=
:rgb(10,81,161)!important"><div style=3D"color:rgb(10,81,161)!important;bor=
der-left-color:rgb(10,81,161)!important;font-variant-caps:normal!important;=
line-height:22px!important"><div style=3D"color:rgb(10,81,161)!important;bo=
rder-left-color:rgb(10,81,161)!important;font-variant-caps:normal!important=
;line-height:22px!important"><div style=3D"color:rgb(10,81,161)!important;b=
order-left-color:rgb(10,81,161)!important;font-variant-caps:normal!importan=
t;line-height:22px!important"><div style=3D"color:rgb(10,81,161)!important;=
border-left-color:rgb(10,81,161)!important;font-variant-caps:normal!importa=
nt;line-height:22px!important"><div style=3D"color:rgb(10,81,161)!important=
;border-left-color:rgb(10,81,161)!important;font-variant-caps:normal!import=
ant;line-height:22px!important"><div style=3D"color:rgb(10,81,161)!importan=
t;border-left-color:rgb(10,81,161)!important;font-variant-caps:normal!impor=
tant;line-height:22px!important"><p style=3D"margin-left:1in;color:rgb(10,8=
1,161)!important;border-left-color:rgb(10,81,161)!important;font-variant-ca=
ps:normal!important;line-height:22px!important"><span style=3D"color:rgb(10=
,81,161)!important;border-left-color:rgb(10,81,161)!important;font-variant-=
caps:normal!important;line-height:22px!important">...</span></p><p style=3D=
"margin-left:1in;color:rgb(10,81,161)!important;border-left-color:rgb(10,81=
,161)!important;font-variant-caps:normal!important;line-height:22px!importa=
nt"><span style=3D"color:rgb(10,81,161)!important;border-left-color:rgb(10,=
81,161)!important;font-variant-caps:normal!important;line-height:22px!impor=
tant">3936 =C2=A0 =C2=A0 =C2=A0 leaf dead-timer {</span></p><p style=3D"mar=
gin-left:1in;color:rgb(10,81,161)!important;border-left-color:rgb(10,81,161=
)!important;font-variant-caps:normal!important;line-height:22px!important">=
<span style=3D"color:rgb(10,81,161)!important;border-left-color:rgb(10,81,1=
61)!important;font-variant-caps:normal!important;line-height:22px!important=
">3937 =C2=A0 =C2=A0 =C2=A0 =C2=A0 type uint32;</span></p><p style=3D"margi=
n-left:1in;color:rgb(10,81,161)!important;border-left-color:rgb(10,81,161)!=
important;font-variant-caps:normal!important;line-height:22px!important"><s=
pan style=3D"color:rgb(10,81,161)!important;border-left-color:rgb(10,81,161=
)!important;font-variant-caps:normal!important;line-height:22px!important">=
3938 =C2=A0 =C2=A0 =C2=A0 =C2=A0 units &quot;seconds&quot;;</span></p><p st=
yle=3D"margin-left:1in;color:rgb(10,81,161)!important;border-left-color:rgb=
(10,81,161)!important;font-variant-caps:normal!important;line-height:22px!i=
mportant"><span style=3D"color:rgb(10,81,161)!important;border-left-color:r=
gb(10,81,161)!important;font-variant-caps:normal!important;line-height:22px=
!important">3939 =C2=A0 =C2=A0 =C2=A0 =C2=A0 config false;</span></p><p sty=
le=3D"margin-left:1in;color:rgb(10,81,161)!important;border-left-color:rgb(=
10,81,161)!important;font-variant-caps:normal!important;line-height:22px!im=
portant"><span style=3D"color:rgb(10,81,161)!important;border-left-color:rg=
b(10,81,161)!important;font-variant-caps:normal!important;line-height:22px!=
important">3940 =C2=A0 =C2=A0 =C2=A0 =C2=A0 description &quot;This timer tr=
acks the remaining time before</span></p><p style=3D"margin-left:1in;color:=
rgb(10,81,161)!important;border-left-color:rgb(10,81,161)!important;font-va=
riant-caps:normal!important;line-height:22px!important"><span style=3D"colo=
r:rgb(10,81,161)!important;border-left-color:rgb(10,81,161)!important;font-=
variant-caps:normal!important;line-height:22px!important">3941 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0the neigh=
bor is declared dead.&quot;;</span></p><p style=3D"margin-left:1in;color:rg=
b(10,81,161)!important;border-left-color:rgb(10,81,161)!important;font-vari=
ant-caps:normal!important;line-height:22px!important"><span style=3D"color:=
rgb(10,81,161)!important;border-left-color:rgb(10,81,161)!important;font-va=
riant-caps:normal!important;line-height:22px!important">3942 =C2=A0 =C2=A0 =
=C2=A0 }</span></p><p style=3D"margin-left:1in;color:rgb(10,81,161)!importa=
nt;border-left-color:rgb(10,81,161)!important;font-variant-caps:normal!impo=
rtant;line-height:22px!important"><span style=3D"color:rgb(10,81,161)!impor=
tant;border-left-color:rgb(10,81,161)!important;font-variant-caps:normal!im=
portant;line-height:22px!important">=C2=A0</span></p><p style=3D"margin-lef=
t:1in;color:rgb(10,81,161)!important;border-left-color:rgb(10,81,161)!impor=
tant;font-variant-caps:normal!important;line-height:22px!important"><span s=
tyle=3D"color:rgb(10,81,161)!important;border-left-color:rgb(10,81,161)!imp=
ortant;font-variant-caps:normal!important;line-height:22px!important">[majo=
r] For *-timer: Is tracking the remaining time in seconds enough?=C2=A0 I w=
ould assume that ms would be the right unit.=C2=A0 Why seconds?</span></p><=
p style=3D"margin-left:0.5in;color:rgb(10,81,161)!important;border-left-col=
or:rgb(10,81,161)!important;font-variant-caps:normal!important;line-height:=
22px!important"><span style=3D"color:rgb(10,81,161)!important;border-left-c=
olor:rgb(10,81,161)!important;font-variant-caps:normal!important;line-heigh=
t:22px!important">&lt;acee&gt; Because sub-second hellos was a bad idea =E2=
=80=93 three words: B-F-D=E2=80=A6&#39;</span></p></div></div></div></div><=
/div></div></blockquote></div><p style=3D"color:rgb(0,0,0);font-variant-cap=
s:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transf=
orm:none;white-space:normal;word-spacing:0px;margin-left:0.5in">This questi=
on is not about sub-second Hellos=E2=80=A6it=E2=80=99s about the *remaining=
 time*.=C2=A0 Even if Hellos are x seconds apart, the =E2=80=9Cremaining ti=
me before the neighbor is declared dead=E2=80=9D can still be in ms, right?=
=C2=A0 Why not?=C2=A0 Note that there are other places in the model that ar=
e characterized as tracking the remaining time.</p><p style=3D"color:rgb(0,=
0,0);font-variant-caps:normal;letter-spacing:normal;text-align:start;text-i=
ndent:0px;text-transform:none;white-space:normal;word-spacing:0px">I don=E2=
=80=99t feel that strongly. However, it would seem that one would use the s=
ame granularity as the configuration. No?</p></font></div></span></blockquo=
te></div><p><font face=3D"Helvetica">I wouldn=E2=80=99t think so.=C2=A0 If =
I was an operator I would like to know if there are 500ms left before my ne=
ighbor dies, and not just 1 or 0.=C2=A0 I think this may also be useful for=
 troubleshooting.</font></p><p><font face=3D"Helvetica">But I=E2=80=99m not=
 an operator=E2=80=A6=C2=A0</font></p><p><font face=3D"Helvetica">Alvaro.</=
font></p><div><blockquote type=3D"cite" class=3D"clean_bq" style=3D"font-va=
riant-caps:normal;letter-spacing:normal;text-align:start;text-indent:0px;te=
xt-transform:none;white-space:normal;word-spacing:0px"><span><div><font fac=
e=3D"Helvetica"><p style=3D"color:rgb(0,0,0);font-variant-caps:normal;lette=
r-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white=
-space:normal;word-spacing:0px">We found that the RFC 8294 timer types aren=
=E2=80=99t good for =E2=80=9Cconfig true=E2=80=9D values since the values =
=E2=80=9Cinfinity=E2=80=9D and =E2=80=9Cnot-set=E2=80=9D are included in th=
e union. Hence, they lend themselves better to operational state than confi=
gurable values.</p><br class=3D"Apple-interchange-newline"></font></div></s=
pan></blockquote><font face=3D"Helvetica"><br class=3D"Apple-interchange-ne=
wline"></font></div> <div class=3D"gmail_signature"></div></body></html>

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From nobody Thu Jun 27 06:16:44 2019
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CC: martin.vigoureux@nokia.com, lsr-chairs@ietf.org, Acee Lindem <acee@cisco.com>, lsr@ietf.org, draft-ietf-ospf-xaf-te@ietf.org, acee@cisco.com
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Date: Thu, 27 Jun 2019 06:16:37 -0700
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Subject: [Lsr] Last Call: <draft-ietf-ospf-xaf-te-06.txt> (OSPF Routing with Cross-Address Family Traffic Engineering Tunnels) to Proposed Standard
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The IESG has received a request from the Link State Routing WG (lsr) to
consider the following document: - 'OSPF Routing with Cross-Address Family
Traffic Engineering Tunnels'
  <draft-ietf-ospf-xaf-te-06.txt> as Proposed Standard

The IESG plans to make a decision in the next few weeks, and solicits final
comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2019-07-11. Exceptionally, comments may be
sent to iesg@ietf.org instead. In either case, please retain the beginning of
the Subject line to allow automated sorting.

Abstract


   When using Traffic Engineering (TE) in a dual-stack IPv4/IPv6
   network, the Multiprotocol Label Switching (MPLS) TE Label Switched
   Paths (LSP) infrastructure may be duplicated, even if the destination
   IPv4 and IPv6 addresses belong to the same remote router.  In order
   to achieve an integrated MPLS TE LSP infrastructure, OSPF routes must
   be computed over MPLS TE tunnels created using information propagated
   in another OSPF instance.  This issue is solved by advertising cross-
   address family (X-AF) OSPF TE information.

   This document describes an update to RFC5786 that allows for the easy
   identification of a router's local X-AF IP addresses.




The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-ospf-xaf-te/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-ospf-xaf-te/ballot/


No IPR declarations have been submitted directly on this I-D.





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From: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
To: Alvaro Retana <aretana.ietf@gmail.com>, "Acee Lindem (acee)" <acee@cisco.com>, "draft-ietf-ospf-yang@ietf.org" <draft-ietf-ospf-yang@ietf.org>
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Thread-Topic: [Lsr] AD Review for draft-ietf-ospf-yang-21
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Subject: Re: [Lsr] AD Review for draft-ietf-ospf-yang-21
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--_000_BYAPR11MB363848AE1ECAF545881723B8C1FD0BYAPR11MB3638namp_--


From nobody Fri Jun 28 14:20:11 2019
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Subject: [Lsr] [Errata Rejected] RFC2328 (5684)
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The following errata report has been rejected for RFC2328,
"OSPF Version 2".

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid5684

--------------------------------------
Status: Rejected
Type: Editorial

Reported by: jonathan natale <jnatale@arista.com>
Date Reported: 2019-04-04
Rejected by: Alvaro Retana (IESG)

Section: 9.4

Original Text
-------------
These two alternatives (~=">=1 BDRs" vs. ~="no BDRs") seem (to me at
least, maybe I missed the point) to have the same outcome (~="highest
becomes BDR")--please clarify it:
If one or more of these
            routers have declared themselves Backup Designated
Router[alternative1]
            (i.e., they are currently listing themselves as Backup
            Designated Router, but not as Designated Router, in their
            Hello Packets) the one having highest Router Priority is
            declared to be Backup Designated Router.  In case of a tie,
            the one having the highest Router ID is chosen.  If no
            routers have declared themselves Backup Designated
Router[alternative2],



Moy                         Standards Track                    [Page 75]
 
RFC 2328                     OSPF Version 2                   April 1998


            choose the router having highest Router Priority, (again
            excluding those routers who have declared themselves
            Designated Router), and again use the Router ID to break
            ties.


Corrected Text
--------------
TBD

Notes
-----
It is unclear to me if a BDR should get preempted (I know the BDR should not).
 --VERIFIER NOTES-- 
   The confusion was cleared on the WG list.

--------------------------------------
RFC2328 (no draft string recorded)
--------------------------------------
Title               : OSPF Version 2
Publication Date    : April 1998
Author(s)           : J. Moy
Category            : INTERNET STANDARD
Source              : Open Shortest Path First IGP
Area                : Routing
Stream              : IETF
Verifying Party     : IESG


From nobody Fri Jun 28 16:01:00 2019
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Subject: [Lsr] lsr - Requested sessions have been scheduled for IETF 105
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Dear Christian Hopps,

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


    lsr Session 1 (1:30 requested)
    Monday, 22 July 2019, Afternoon Session I 1330-1530
    Room Name: Duluth size: 150
    ---------------------------------------------
    lsr Session 2 (1:00 requested)
    Monday, 22 July 2019, Afternoon Session III 1810-1910
    Room Name: Duluth size: 150
    ---------------------------------------------


iCalendar: https://datatracker.ietf.org/meeting/105/sessions/lsr.ics

Request Information:


---------------------------------------------------------
Working Group Name: Link State Routing
Area Name: Routing Area
Session Requester: Christian Hopps

Number of Sessions: 2
Length of Session(s):  1.5 Hours, 1 Hour
Number of Attendees: 100
Conflicts to Avoid: 
 First Priority: idr ipsecme
 Second Priority: bier netmod rift
 Third Priority: bess lsvr rtgwg


People who must be present:
  Acee Lindem
  Christian Hopps
  Alvaro Retana

Resources Requested:

Special Requests:
  Please make back to back if possible. At least one LSR session &quot;MUST&quot; not conflict with bier and rift, at least one netmod session &quot;SHOULD&quot; not conflict with LSR.
---------------------------------------------------------


From nobody Sun Jun 30 04:27:53 2019
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Subject: [Lsr] Genart last call review of draft-ietf-ospf-xaf-te-06
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Reviewer: Roni Even
Review result: Ready

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.

For more information, please see the FAQ at

<https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.

Document: draft-ietf-ospf-xaf-te-??
Reviewer: Roni Even
Review Date: 2019-06-30
IETF LC End Date: 2019-07-11
IESG Telechat date: Not scheduled for a telechat

Summary: The document is ready for publication as a standard track RFC

Major issues:

Minor issues:

Nits/editorial comments:



From nobody Sun Jun 30 22:56:26 2019
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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           : OSPF Extension for Prefix Originator
        Authors         : Aijun Wang
                          Acee Lindem
                          Jie Dong
                          Ketan Talaulikar
                          Peter Psenak
	Filename        : draft-ietf-lsr-ospf-prefix-originator-01.txt
	Pages           : 9
	Date            : 2019-06-30

Abstract:
   This document describes OSPFv2 and OSPFv3 encodings to advertise the
   router-id of the originator of inter-area prefixes for OSPFv2 and
   OSPFv3 LSAs, which are needed in several use cases in multi-area OSPF
   use cases.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-lsr-ospf-prefix-originator/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-lsr-ospf-prefix-originator-01
https://datatracker.ietf.org/doc/html/draft-ietf-lsr-ospf-prefix-originator-01

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-lsr-ospf-prefix-originator-01


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

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


From nobody Sun Jun 30 23:36:16 2019
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From: "Aijun Wang" <wangaijun@tsinghua.org.cn>
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Hi, Folks:

I just add the "Security/IANA Considerations" and make some editorial
clarification for the draft, any comments are welcome.


Best Regards.

Aijun Wang
Network R&D and Operation Support Department
China Telecom Corporation Limited Beijing Research Institute,Beijing, =
China.

-----=D3=CA=BC=FE=D4=AD=BC=FE-----
=B7=A2=BC=FE=C8=CB: internet-drafts@ietf.org =
[mailto:internet-drafts@ietf.org]=20
=B7=A2=CB=CD=CA=B1=BC=E4: 2019=C4=EA7=D4=C21=C8=D5 13:56
=CA=D5=BC=FE=C8=CB: i-d-announce@ietf.org
=B3=AD=CB=CD: lsr@ietf.org
=D6=F7=CC=E2: [Lsr] I-D Action: =
draft-ietf-lsr-ospf-prefix-originator-01.txt


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           : OSPF Extension for Prefix Originator
        Authors         : Aijun Wang
                          Acee Lindem
                          Jie Dong
                          Ketan Talaulikar
                          Peter Psenak
	Filename        : draft-ietf-lsr-ospf-prefix-originator-01.txt
	Pages           : 9
	Date            : 2019-06-30

Abstract:
   This document describes OSPFv2 and OSPFv3 encodings to advertise the
   router-id of the originator of inter-area prefixes for OSPFv2 and
   OSPFv3 LSAs, which are needed in several use cases in multi-area OSPF
   use cases.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-lsr-ospf-prefix-originator/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-lsr-ospf-prefix-originator-01
https://datatracker.ietf.org/doc/html/draft-ietf-lsr-ospf-prefix-originat=
or-
01

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-lsr-ospf-prefix-originator=
-01


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

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

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