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From: "Dolganow, Andrew (Nokia - SG)" <andrew.dolganow@nokia.com>
To: "ospf@ietf.org" <ospf@ietf.org>
Thread-Topic: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
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Subject: Re: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
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Support

Andrew

Sent from my iPhone

>> -------- Original Message --------
>> Subject: Working Group  Last Call for OSPF Extensions for Segment=20
>> Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft=20
>> Authors E-mail)
>> Date: Wed, 4 May 2016 15:41:26 +0000
>> From: Acee Lindem (acee) <acee@cisco.com>
>> To: OSPF WG List <ospf@ietf.org>
>> CC: draft-ietf-ospf-segment-routing-extensions@ietf.org=20
>> <draft-ietf-ospf-segment-routing-extensions@ietf.org>
>>=20
>> The subject draft is very stable, has multiple interoperable
>> implementations, and many (including myself) have done thorough reviews.=
 I
>> believe we are ready for WG last call for this very important draft.
>>=20
>> With great pleasure, this begins the WG last call for the subject draft.
>> Please send your comments to this list prior to 12:00 AM GMT, May 19th,
>> 2016.
>>=20
>> Here is a URL for your convenance:
>>=20
>> https://datatracker.ietf.org/doc/draft-ietf-ospf-segment-routing-extensi=
ons
>> /
>>=20
>> Thanks,
>> Acee
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www.ietf.org/mailman/listinfo/ospf


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From: "Acee Lindem (acee)" <acee@cisco.com>
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Thread-Topic: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
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From: "Acee Lindem (acee)" <acee@cisco.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, OSPF WG List <ospf@ietf.org>
Thread-Topic: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
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From nobody Fri Jun  3 14:58:23 2016
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To: "Acee Lindem (acee)" <acee@cisco.com>
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Subject: Re: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
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Hi Acee,

I am not aware of any undisclosed IPR on this draft.

Kind regards,
r.

> On Jun 3, 2016, at 14:45, Acee Lindem (acee) <acee@cisco.com> wrote:
> 
> Authors, 
> 
> For the final time, can you confirm whether or not you are aware of any
> IPR other than? 
> 
> https://datatracker.ietf.org/ipr/2401/
> https://datatracker.ietf.org/ipr/2233/ (the IPR statement on the non-WG
> draft version) 
> 
> Thanks,
> Acee 
> 
>> On 6/2/16, 10:04 AM, "Acee Lindem (acee)" <acee@cisco.com> wrote:
>> 
>> The WG last call ended a couple weeks ago and I will act as document
>> shepherd and request publication.
>> Thanks,
>> Acee 
>> 
>> On 5/4/16, 11:41 AM, "OSPF on behalf of Acee Lindem (acee)"
>> <ospf-bounces@ietf.org on behalf of acee@cisco.com> wrote:
>> 
>>> The subject draft is very stable, has multiple interoperable
>>> implementations, and many (including myself) have done thorough reviews.
>>> I
>>> believe we are ready for WG last call for this very important draft.
>>> 
>>> With great pleasure, this begins the WG last call for the subject draft.
>>> Please send your comments to this list prior to 12:00 AM GMT, May 19th,
>>> 2016.
>>> 
>>> Here is a URL for your convenance:
>>> 
>>> https://datatracker.ietf.org/doc/draft-ietf-ospf-segment-routing-extensio
>>> n
>>> s
>>> /
>>> 
>>> Thanks,
>>> Acee
>>> 
>>> _______________________________________________
>>> OSPF mailing list
>>> OSPF@ietf.org
>>> https://www.ietf.org/mailman/listinfo/ospf
> 


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Date: Fri, 03 Jun 2016 15:02:33 -0700
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, OSPF WG List <ospf@ietf.org>
Message-ID: <157A5922-F546-4D6F-BDF1-E139DD3C3997@gmail.com>
Thread-Topic: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
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Subject: Re: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
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Hi Acee,

I=E2=80=99m not aware of any undisclosed IPR.

Thanks,
Jeff=20
=20
On 6/3/16, 2:45 PM, "OSPF on behalf of Acee Lindem (acee)" <ospf-bounces@ie=
tf.org on behalf of acee@cisco.com> wrote:

>Authors,=20
>
>For the final time, can you confirm whether or not you are aware of any
>IPR other than?=20
>
>https://datatracker.ietf.org/ipr/2401/
>https://datatracker.ietf.org/ipr/2233/ (the IPR statement on the non-WG
>draft version)=20
>
>Thanks,
>Acee=20
>
>On 6/2/16, 10:04 AM, "Acee Lindem (acee)" <acee@cisco.com> wrote:
>
>>The WG last call ended a couple weeks ago and I will act as document
>>shepherd and request publication.
>>Thanks,
>>Acee=20
>>
>>On 5/4/16, 11:41 AM, "OSPF on behalf of Acee Lindem (acee)"
>><ospf-bounces@ietf.org on behalf of acee@cisco.com> wrote:
>>
>>>The subject draft is very stable, has multiple interoperable
>>>implementations, and many (including myself) have done thorough reviews.
>>>I
>>>believe we are ready for WG last call for this very important draft.
>>>
>>>With great pleasure, this begins the WG last call for the subject draft.
>>>Please send your comments to this list prior to 12:00 AM GMT, May 19th,
>>>2016.
>>>
>>>Here is a URL for your convenance:
>>>
>>>https://datatracker.ietf.org/doc/draft-ietf-ospf-segment-routing-extensi=
o
>>>n
>>>s
>>>/
>>>
>>>Thanks,
>>>Acee
>>>
>>>_______________________________________________
>>>OSPF mailing list
>>>OSPF@ietf.org
>>>https://www.ietf.org/mailman/listinfo/ospf
>>
>
>_______________________________________________
>OSPF mailing list
>OSPF@ietf.org
>https://www.ietf.org/mailman/listinfo/ospf



From nobody Fri Jun  3 19:15:15 2016
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To: "Acee Lindem (acee)" <acee@cisco.com>
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not aware about any non-disclosed IPR - /hannes

> On 04 Jun 2016, at 03:15, Acee Lindem (acee) <acee@cisco.com> wrote:
> 
> Authors, 
> 
> For the final time, can you confirm whether or not you are aware of any
> IPR other than? 
> 
> https://datatracker.ietf.org/ipr/2401/
> https://datatracker.ietf.org/ipr/2233/ (the IPR statement on the non-WG
> draft version) 
> 
> Thanks,
> Acee 
> 
>> On 6/2/16, 10:04 AM, "Acee Lindem (acee)" <acee@cisco.com> wrote:
>> 
>> The WG last call ended a couple weeks ago and I will act as document
>> shepherd and request publication.
>> Thanks,
>> Acee 
>> 
>> On 5/4/16, 11:41 AM, "OSPF on behalf of Acee Lindem (acee)"
>> <ospf-bounces@ietf.org on behalf of acee@cisco.com> wrote:
>> 
>>> The subject draft is very stable, has multiple interoperable
>>> implementations, and many (including myself) have done thorough reviews.
>>> I
>>> believe we are ready for WG last call for this very important draft.
>>> 
>>> With great pleasure, this begins the WG last call for the subject draft.
>>> Please send your comments to this list prior to 12:00 AM GMT, May 19th,
>>> 2016.
>>> 
>>> Here is a URL for your convenance:
>>> 
>>> https://datatracker.ietf.org/doc/draft-ietf-ospf-segment-routing-extensio
>>> n
>>> s
>>> /
>>> 
>>> Thanks,
>>> Acee
>>> 
>>> _______________________________________________
>>> OSPF mailing list
>>> OSPF@ietf.org
>>> https://www.ietf.org/mailman/listinfo/ospf
> 


From nobody Sun Jun  5 02:55:41 2016
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From nobody Sun Jun  5 12:01:40 2016
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Date: Sun, 05 Jun 2016 21:01:33 +0200
From: Peter Psenak <ppsenak@cisco.com>
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To: "Acee Lindem (acee)" <acee@cisco.com>, OSPF WG List <ospf@ietf.org>
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Subject: Re: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
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Hi Acee,

I am not aware of any undisclosed IPR on this draft.

thanks,
Peter

On 6/3/16 23:45 , Acee Lindem (acee) wrote:
> Authors,
>
> For the final time, can you confirm whether or not you are aware of any
> IPR other than?
>
> https://datatracker.ietf.org/ipr/2401/
> https://datatracker.ietf.org/ipr/2233/ (the IPR statement on the non-WG
> draft version)
>
> Thanks,
> Acee
>
> On 6/2/16, 10:04 AM, "Acee Lindem (acee)" <acee@cisco.com> wrote:
>
>> The WG last call ended a couple weeks ago and I will act as document
>> shepherd and request publication.
>> Thanks,
>> Acee
>>
>> On 5/4/16, 11:41 AM, "OSPF on behalf of Acee Lindem (acee)"
>> <ospf-bounces@ietf.org on behalf of acee@cisco.com> wrote:
>>
>>> The subject draft is very stable, has multiple interoperable
>>> implementations, and many (including myself) have done thorough reviews.
>>> I
>>> believe we are ready for WG last call for this very important draft.
>>>
>>> With great pleasure, this begins the WG last call for the subject draft.
>>> Please send your comments to this list prior to 12:00 AM GMT, May 19th,
>>> 2016.
>>>
>>> Here is a URL for your convenance:
>>>
>>> https://datatracker.ietf.org/doc/draft-ietf-ospf-segment-routing-extensio
>>> n
>>> s
>>> /
>>>
>>> Thanks,
>>> Acee
>>>
>>> _______________________________________________
>>> OSPF mailing list
>>> OSPF@ietf.org
>>> https://www.ietf.org/mailman/listinfo/ospf
>>
>


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From: "Stefano Previdi (sprevidi)" <sprevidi@cisco.com>
To: "Acee Lindem (acee)" <acee@cisco.com>
Thread-Topic: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
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To: draft-ietf-ospf-segment-routing-extensions@ietf.org, ospf@ietf.org
From: Clarence Filsfils <cfilsfil@cisco.com>
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Subject: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
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I’m not aware of any undisclosed IPR related to this draft.

Cheers,
Clarence




> From: Stefano Previdi <sprevidi@cisco.com>
> Subject: Re: [OSPF] Working Group Last Call for OSPF Extensions for Segment Routing - draft-ietf-ospf-segment-routing-extensions (Correct Draft Authors E-mail)
> Date: June 6, 2016 at 2:45:23 PM GMT+2
> To: "Acee Lindem (acee)" <acee@cisco.com>
> Cc: OSPF WG List <ospf@ietf.org>, "draft-ietf-ospf-segment-routing-extensions@ietf.org" <draft-ietf-ospf-segment-routing-extensions@ietf.org>
>
> Hi,
>
> I’m not aware of any undisclosed IPR related to this draft.
>
> s.
>
>
>> On Jun 3, 2016, at 11:45 PM, Acee Lindem (acee) <acee@cisco.com> wrote:
>>
>> Authors,
>>
>> For the final time, can you confirm whether or not you are aware of any
>> IPR other than?
>>
>> https://datatracker.ietf.org/ipr/2401/
>> https://datatracker.ietf.org/ipr/2233/ (the IPR statement on the non-WG
>> draft version)
>>
>> Thanks,
>> Acee
>>
>> On 6/2/16, 10:04 AM, "Acee Lindem (acee)" <acee@cisco.com> wrote:
>>
>>> The WG last call ended a couple weeks ago and I will act as document
>>> shepherd and request publication.
>>> Thanks,
>>> Acee
>>>
>>> On 5/4/16, 11:41 AM, "OSPF on behalf of Acee Lindem (acee)"
>>> <ospf-bounces@ietf.org on behalf of acee@cisco.com> wrote:
>>>
>>>> The subject draft is very stable, has multiple interoperable
>>>> implementations, and many (including myself) have done thorough reviews.
>>>> I
>>>> believe we are ready for WG last call for this very important draft.
>>>>
>>>> With great pleasure, this begins the WG last call for the subject draft.
>>>> Please send your comments to this list prior to 12:00 AM GMT, May 19th,
>>>> 2016.
>>>>
>>>> Here is a URL for your convenance:
>>>>
>>>> https://datatracker.ietf.org/doc/draft-ietf-ospf-segment-routing-extensio
>>>> n
>>>> s
>>>> /
>>>>
>>>> Thanks,
>>>> Acee
>>>>
>>>> _______________________________________________
>>>> OSPF mailing list
>>>> OSPF@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/ospf
>>>
>>
>




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From: Alia Atlas <akatlas@gmail.com>
Date: Thu, 9 Jun 2016 15:57:57 -0400
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Subject: [OSPF] AD review of draft-ietf-ospf-transition-to-ospfv3-07
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--001a113a6860b2e9010534ddd6df
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As is customary, I have done my AD review
of draft-ietf-ospf-transition-to-ospfv3-07.
First, I would like to thank the authors for their work on this document.
It looks like
very useful technology.

I have a few minor questions below.  I will put this into IETF Last Call as
well while
waiting for the authors to update the draft ASAP.   That gives a chance of
making it
on to the June 30 telechat if the authors are responsive.

Minor:

1) Sec 3.1:  "If this is supported, the IPv4 data plane MUST resolve
     the layer-2 address using Address Resolution Protocol (ARP) on
     multi-access networks and point-to-point over LAN [RFC5309] for
     direct next-hops on different IPv4 subnets."

     I believe it is the IPv4 (i.e. layer-3) address to be resolved with
ARP - not the
     layer-2 address.

2) Sec 3.3: "If IPv4 transport, as specified herein, is used for IPv6
address
     families, virtual links cannot be
     supported. Hence, it is RECOMMENDED to use the IP transport
     matching the address family in OSPF routing domains requiring
     virtual links."

     From this section, I was expecting that "cannot" would be a "can".  Did
     I miss something?  Can you clarify further?

3) Sec 1: 2nd to last paragraph: "In situations where the IPv6 deployment
is a
   proper superset of the IPv4 deployment, it is expected that OSPFv3
   would be transported over IPv6."

   I believe the "proper" should be removed.   If the IPv6 deployment is
exactly the same
   as the IPv4 deployment, then it is expected that OSPFv3 would be
transported over
   IPv6.     As it is,how the case of equal deployment is handled is
unspecified.

Thanks,
Alia

--001a113a6860b2e9010534ddd6df
Content-Type: text/html; charset=UTF-8
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<div dir=3D"ltr"><div>As is customary, I have done my AD review of=C2=A0dra=
ft-ietf-ospf-transition-to-ospfv3-07.<br></div><div>First, I would like to =
thank the authors for their work on this document.=C2=A0 It looks like</div=
><div>very useful technology.</div><div><br></div><div>I have a few minor q=
uestions below.=C2=A0 I will put this into IETF Last Call as well while</di=
v><div>waiting for the authors to update the draft ASAP. =C2=A0 That gives =
a chance of making it</div><div>on to the June 30 telechat if the authors a=
re responsive.</div><div><br></div><div>Minor:</div><div><br></div><div>1) =
Sec 3.1: =C2=A0&quot;If this is supported, the IPv4 data plane MUST resolve=
<br>=C2=A0 =C2=A0 =C2=A0the layer-2 address using Address Resolution Protoc=
ol (ARP) on<br>=C2=A0 =C2=A0 =C2=A0multi-access networks and point-to-point=
 over LAN [RFC5309] for<br>=C2=A0 =C2=A0 =C2=A0direct next-hops on differen=
t IPv4 subnets.&quot;</div><div><br></div><div>=C2=A0 =C2=A0 =C2=A0I believ=
e it is the IPv4 (i.e. layer-3) address to be resolved with ARP - not the=
=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0layer-2 address. =C2=A0</div><div><br>=
</div><div>2) Sec 3.3:=C2=A0&quot;If IPv4 transport, as specified=C2=A0here=
in, is used for IPv6 address=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0families, =
virtual links cannot be<br>=C2=A0 =C2=A0 =C2=A0supported. Hence, it is RECO=
MMENDED to use the IP transport<br>=C2=A0 =C2=A0 =C2=A0matching the address=
 family in OSPF routing domains requiring<br>=C2=A0 =C2=A0 =C2=A0virtual li=
nks.&quot;</div><div><br></div><div>=C2=A0 =C2=A0 =C2=A0From this section, =
I was expecting that &quot;cannot&quot; would be a &quot;can&quot;.=C2=A0 D=
id</div><div>=C2=A0 =C2=A0 =C2=A0I miss something?=C2=A0 Can you clarify fu=
rther?</div><div><br></div><div>3) Sec 1: 2nd to last paragraph:=C2=A0&quot=
;In situations where the IPv6 deployment is a<br></div><div>=C2=A0 =C2=A0pr=
oper superset of the IPv4 deployment, it is expected that OSPFv3<br>=C2=A0 =
=C2=A0would be transported over IPv6.&quot; =C2=A0=C2=A0<br></div><div><br>=
</div><div>=C2=A0 =C2=A0I believe the &quot;proper&quot; should be removed.=
 =C2=A0 If the IPv6 deployment is exactly the same</div><div>=C2=A0 =C2=A0a=
s the IPv4 deployment, then it is expected that OSPFv3 would be transported=
 over</div><div>=C2=A0 =C2=A0IPv6. =C2=A0 =C2=A0 As it is,how the case of e=
qual deployment is handled is unspecified.</div><div><br></div><div>Thanks,=
</div><div>Alia</div></div>

--001a113a6860b2e9010534ddd6df--


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Subject: [OSPF] Last Call: <draft-ietf-ospf-transition-to-ospfv3-07.txt> (OSPFv3 over IPv4 for IPv6 Transition) to Proposed Standard
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The IESG has received a request from the Open Shortest Path First IGP WG
(ospf) to consider the following document:
- 'OSPFv3 over IPv4 for IPv6 Transition'
  <draft-ietf-ospf-transition-to-ospfv3-07.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 2016-06-23. 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


   This document defines a mechanism to use IPv4 to transport OSPFv3
   packets.  Using OSPFv3 over IPv4 with the existing OSPFv3 Address
   Family extension can simplify transition from an OSPFv2 IPv4-only
   routing domain to an OSPFv3 dual-stack routing domain.  This document
   updates RFC 5838 to support virtual links in the IPv4 unicast address
   family when using OSPFv3 over IPv4.




The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/ballot/


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



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From: Alia Atlas <akatlas@gmail.com>
Date: Thu, 9 Jun 2016 18:59:22 -0400
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To: "Acee Lindem (acee)" <acee@cisco.com>
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Subject: Re: [OSPF] AD review of draft-ietf-ospf-transition-to-ospfv3-07
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Hi Acee,

On Thu, Jun 9, 2016 at 6:42 PM, Acee Lindem (acee) <acee@cisco.com> wrote:

> Hi Alia,
>
> Thanks for the review - you caught some rather subtle points.
>

thanks - this was a nice tractable draft to read in a short time.



> From: OSPF <ospf-bounces@ietf.org> on behalf of Alia Atlas <
> akatlas@gmail.com>
> Date: Thursday, June 9, 2016 at 3:57 PM
> To: OSPF WG List <ospf@ietf.org>
> Subject: [OSPF] AD review of draft-ietf-ospf-transition-to-ospfv3-07
>
> As is customary, I have done my AD review
> of draft-ietf-ospf-transition-to-ospfv3-07.
> First, I would like to thank the authors for their work on this document.
> It looks like
> very useful technology.
>
> I have a few minor questions below.  I will put this into IETF Last Call
> as well while
> waiting for the authors to update the draft ASAP.   That gives a chance o=
f
> making it
> on to the June 30 telechat if the authors are responsive.
>
> Minor:
>
> 1) Sec 3.1:  "If this is supported, the IPv4 data plane MUST resolve
>      the layer-2 address using Address Resolution Protocol (ARP) on
>      multi-access networks and point-to-point over LAN [RFC5309] for
>      direct next-hops on different IPv4 subnets."
>
>      I believe it is the IPv4 (i.e. layer-3) address to be resolved with
> ARP - not the
>      layer-2 address.
>
>
> Ok - this text comes from me and I was viewing resolution from the
> standpoint of the =E2=80=9Cto=E2=80=9D address family rather than the =E2=
=80=9Cfrom=E2=80=9D address
> family. I agree the =E2=80=9Cfrom=E2=80=9D address family is probably a m=
ore common
> characterization.
>

Feel free to say "MUST resolve from the IPv4 address to the layer-2 address
using ARP...." if you
want extreme clearness.



>
>
> 2) Sec 3.3: "If IPv4 transport, as specified herein, is used for IPv6
> address
>      families, virtual links cannot be
>      supported. Hence, it is RECOMMENDED to use the IP transport
>      matching the address family in OSPF routing domains requiring
>      virtual links."
>
>      From this section, I was expecting that "cannot" would be a "can".
> Did
>      I miss something?  Can you clarify further?
>
>
> The draft doesn=E2=80=99t address virtual link support in deployments whe=
re the
> address-family doesn=E2=80=99t match the transport. Hence, the text is co=
rrect as
> written.
>

Ok - but the draft  just says
"Hence, it is RECOMMENDED to use the IP transport
     matching the address family in OSPF routing domains requiring
     virtual links."

Can you clean this up to be extremely clear?
With an IPv4 transport, IPv6 virtual links are not supported.
With an IPv4 transport, IPv4 virtual links are supported.

and vice versa.

I read the relaxation as applying to both IPv4 and IPv6; maybe I was
reading too fast, but a few clarifying
words would probably help.

3) Sec 1: 2nd to last paragraph: "In situations where the IPv6 deployment
> is a
>    proper superset of the IPv4 deployment, it is expected that OSPFv3
>    would be transported over IPv6."
>
>    I believe the "proper" should be removed.   If the IPv6 deployment is
> exactly the same
>    as the IPv4 deployment, then it is expected that OSPFv3 would be
> transported over
>    IPv6.     As it is,how the case of equal deployment is handled is
> unspecified.
>
>
> I agree. We will remove =E2=80=9Cproper".
>

thanks,
Alia

>
>


> Thanks,
> Acee
>
>
>
> Thanks,
> Alia
>
>

--001a113a64e08464c80534e05f90
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<div dir=3D"ltr">Hi Acee,<div class=3D"gmail_extra"><br><div class=3D"gmail=
_quote">On Thu, Jun 9, 2016 at 6:42 PM, Acee Lindem (acee) <span dir=3D"ltr=
">&lt;<a href=3D"mailto:acee@cisco.com" target=3D"_blank">acee@cisco.com</a=
>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0p=
x 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-c=
olor:rgb(204,204,204);padding-left:1ex">



<div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-size:14px;font-fam=
ily:Calibri,sans-serif">
<div>Hi Alia,=C2=A0</div>
<div><br>
</div>
<div>Thanks for the review - you caught some rather subtle points.=C2=A0</d=
iv></div></blockquote><div><br></div><div>thanks - this was a nice tractabl=
e draft to read in a short time.=C2=A0</div><div><br></div><div>=C2=A0</div=
><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border=
-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);=
padding-left:1ex"><div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-=
size:14px;font-family:Calibri,sans-serif"><div>
</div>
<span>
<div style=3D"font-family:Calibri;font-size:11pt;text-align:left;color:blac=
k;border-width:1pt medium medium;border-style:solid none none;padding:3pt 0=
in 0in;border-top-color:rgb(181,196,223)">
<span style=3D"font-weight:bold">From: </span>OSPF &lt;<a href=3D"mailto:os=
pf-bounces@ietf.org" target=3D"_blank">ospf-bounces@ietf.org</a>&gt; on beh=
alf of Alia Atlas &lt;<a href=3D"mailto:akatlas@gmail.com" target=3D"_blank=
">akatlas@gmail.com</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Thursday, June 9, 2016 at 3:5=
7 PM<br>
<span style=3D"font-weight:bold">To: </span>OSPF WG List &lt;<a href=3D"mai=
lto:ospf@ietf.org" target=3D"_blank">ospf@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>[OSPF] AD review of draft-=
ietf-ospf-transition-to-ospfv3-07<br>
</div><span>
<div><br>
</div>
<blockquote style=3D"BORDER-LEFT:#b5c4df 5 solid;PADDING:0 0 0 5;MARGIN:0 0=
 0 5">
<div>
<div>
<div dir=3D"ltr">
<div>As is customary, I have done my AD review of=C2=A0draft-ietf-ospf-tran=
sition-to-ospfv3-07.<br>
</div>
<div>First, I would like to thank the authors for their work on this docume=
nt.=C2=A0 It looks like</div>
<div>very useful technology.</div>
<div><br>
</div>
<div>I have a few minor questions below.=C2=A0 I will put this into IETF La=
st Call as well while</div>
<div>waiting for the authors to update the draft ASAP. =C2=A0 That gives a =
chance of making it</div>
<div>on to the June 30 telechat if the authors are responsive.</div>
<div><br>
</div>
<div>Minor:</div>
<div><br>
</div>
<div>1) Sec 3.1: =C2=A0&quot;If this is supported, the IPv4 data plane MUST=
 resolve<br>
=C2=A0 =C2=A0 =C2=A0the layer-2 address using Address Resolution Protocol (=
ARP) on<br>
=C2=A0 =C2=A0 =C2=A0multi-access networks and point-to-point over LAN [RFC5=
309] for<br>
=C2=A0 =C2=A0 =C2=A0direct next-hops on different IPv4 subnets.&quot;</div>
<div><br>
</div>
<div>=C2=A0 =C2=A0 =C2=A0I believe it is the IPv4 (i.e. layer-3) address to=
 be resolved with ARP - not the=C2=A0</div>
<div>=C2=A0 =C2=A0 =C2=A0layer-2 address. =C2=A0</div>
</div>
</div>
</div>
</blockquote>
</span></span>
<div><br>
</div>
<div>Ok - this text comes from me and I was viewing resolution from the sta=
ndpoint of the =E2=80=9Cto=E2=80=9D address family rather than the =E2=80=
=9Cfrom=E2=80=9D address family. I agree the =E2=80=9Cfrom=E2=80=9D address=
 family is probably a more common characterization.=C2=A0</div></div></bloc=
kquote><div><br></div><div>Feel free to say &quot;MUST resolve from the IPv=
4 address to the layer-2 address using ARP....&quot; if you</div><div>want =
extreme clearness.=C2=A0</div><div><br></div><div>=C2=A0</div><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1p=
x;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1=
ex"><div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-size:14px;font=
-family:Calibri,sans-serif"><span><div>
</div>
<div><br>
</div>
<span>
<blockquote style=3D"BORDER-LEFT:#b5c4df 5 solid;PADDING:0 0 0 5;MARGIN:0 0=
 0 5">
<div>
<div>
<div dir=3D"ltr">
<div><br>
</div>
<div>2) Sec 3.3:=C2=A0&quot;If IPv4 transport, as specified=C2=A0herein, is=
 used for IPv6 address=C2=A0</div>
<div>=C2=A0 =C2=A0 =C2=A0families, virtual links cannot be<br>
=C2=A0 =C2=A0 =C2=A0supported. Hence, it is RECOMMENDED to use the IP trans=
port<br>
=C2=A0 =C2=A0 =C2=A0matching the address family in OSPF routing domains req=
uiring<br>
=C2=A0 =C2=A0 =C2=A0virtual links.&quot;</div>
<div><br>
</div>
<div>=C2=A0 =C2=A0 =C2=A0From this section, I was expecting that &quot;cann=
ot&quot; would be a &quot;can&quot;.=C2=A0 Did</div>
<div>=C2=A0 =C2=A0 =C2=A0I miss something?=C2=A0 Can you clarify further?</=
div>
</div>
</div>
</div>
</blockquote>
</span>
<div><br>
</div>
</span><div>The draft doesn=E2=80=99t address virtual link support in deplo=
yments where the address-family doesn=E2=80=99t match the transport. Hence,=
 the text is correct as written.=C2=A0</div></div></blockquote><div><br></d=
iv><div>Ok - but the draft =C2=A0just says=C2=A0</div><div>&quot;Hence, it =
is RECOMMENDED to use the IP transport<br>=C2=A0 =C2=A0 =C2=A0matching the =
address family in OSPF routing domains requiring<br>=C2=A0 =C2=A0 =C2=A0vir=
tual links.&quot;</div><div><br></div><div>Can you clean this up to be extr=
emely clear?</div><div>With an IPv4 transport, IPv6 virtual links are not s=
upported.</div><div>With an IPv4 transport, IPv4 virtual links are supporte=
d.</div><div><br></div><div>and vice versa.</div><div><br></div><div>I read=
 the relaxation as applying to both IPv4 and IPv6; maybe I was reading too =
fast, but a few clarifying</div><div>words would probably help.</div><div><=
br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,2=
04,204);padding-left:1ex"><div style=3D"word-wrap:break-word;color:rgb(0,0,=
0);font-size:14px;font-family:Calibri,sans-serif"><span><div>
</div>
<span><blockquote style=3D"BORDER-LEFT:#b5c4df 5 solid;PADDING:0 0 0 5;MARG=
IN:0 0 0 5"><div><div><div dir=3D"ltr"><div>3) Sec 1: 2nd to last paragraph=
:=C2=A0&quot;In situations where the IPv6 deployment is a<br></div>
<div>=C2=A0 =C2=A0proper superset of the IPv4 deployment, it is expected th=
at OSPFv3<br>
=C2=A0 =C2=A0would be transported over IPv6.&quot; =C2=A0=C2=A0<br>
</div>
<div><br>
</div>
<div>=C2=A0 =C2=A0I believe the &quot;proper&quot; should be removed. =C2=
=A0 If the IPv6 deployment is exactly the same</div>
<div>=C2=A0 =C2=A0as the IPv4 deployment, then it is expected that OSPFv3 w=
ould be transported over</div>
<div>=C2=A0 =C2=A0IPv6. =C2=A0 =C2=A0 As it is,how the case of equal deploy=
ment is handled is unspecified.</div>
</div>
</div>
</div>
</blockquote>
</span>
<div><br>
</div>
</span><div>I agree. We will remove =E2=80=9Cproper&quot;.=C2=A0</div></div=
></blockquote><div><br></div><div>thanks,</div><div>Alia=C2=A0</div><blockq=
uote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-wi=
dth:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-=
left:1ex"><div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-size:14p=
x;font-family:Calibri,sans-serif"><div><span style=3D"font-family:arial,san=
s-serif;font-size:small;color:rgb(34,34,34)">=C2=A0</span></div></div></blo=
ckquote><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:=
0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left=
-color:rgb(204,204,204);padding-left:1ex"><div style=3D"word-wrap:break-wor=
d;color:rgb(0,0,0);font-size:14px;font-family:Calibri,sans-serif"><div>
</div>
<div>Thanks,</div>
<div>Acee=C2=A0</div>
<div><br>
</div>
<div><br>
</div>
<span>
<blockquote style=3D"BORDER-LEFT:#b5c4df 5 solid;PADDING:0 0 0 5;MARGIN:0 0=
 0 5">
<div>
<div>
<div dir=3D"ltr">
<div><br>
</div>
<div>Thanks,</div>
<div>Alia</div>
</div>
</div>
</div>
</blockquote>
</span>
</div>

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

--001a113a64e08464c80534e05f90--


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Alia Atlas <akatlas@gmail.com>
Thread-Topic: [OSPF] AD review of draft-ietf-ospf-transition-to-ospfv3-07
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From: Manav Bhatia <manav@ionosnetworks.com>
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Subject: [OSPF] RtgDir review: draft-smirnov-ospf-xaf-te
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--94eb2c122f241178820534e55d97
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Hello,

I have been selected as the Routing Directorate reviewer for this draft.
The Routing Directorate seeks to review all routing or routing-related
drafts as they pass through IETF last call and IESG review, and sometimes
on special request. The purpose of the review is to provide assistance to
the Routing ADs. For more information about the Routing Directorate, please
see http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir

Although these comments are primarily for the use of the Routing ADs, it
would be helpful if you could consider them along with any other IETF Last
Call comments that you receive, and strive to resolve them through
discussion or by updating the draft.

Document: draft-smirnov-ospf-xaf-te
Reviewer: Manav Bhatia
Review Date: 10/06/2016
IETF LC End Date: date-if-known
Intended Status: Standards Track

Summary: No issues found. This document is ready for publication.

The draft proposes something that prima facie appears reasonable -- using a
single OSPF instance to set up TE LSPs for both v4 and v6.

Comments:

The draft is quite simple and i see no technical issues. However, i would
like this to go through the regular IETF WG process before it gets pushed
to the publication pipeline.

Cheers, Manav

--94eb2c122f241178820534e55d97
Content-Type: text/html; charset=UTF-8
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<div dir=3D"ltr">Hello,<br><br>I have been selected as the Routing Director=
ate reviewer for this draft. The Routing Directorate seeks to review all ro=
uting or routing-related drafts as they pass through IETF last call and IES=
G review, and sometimes on special request. The purpose of the review is to=
 provide assistance to the Routing ADs. For more information about the Rout=
ing Directorate, please see <a href=3D"http://trac.tools.ietf.org/area/rtg/=
trac/wiki/RtgDir">http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir</a><=
br><br>Although these comments are primarily for the use of the Routing ADs=
, it would be helpful if you could consider them along with any other IETF =
Last Call comments that you receive, and strive to resolve them through dis=
cussion or by updating the draft.<br><br>Document: draft-smirnov-ospf-xaf-t=
e<br>Reviewer: Manav Bhatia<br>Review Date: 10/06/2016<br>IETF LC End Date:=
 date-if-known <br>Intended Status: Standards Track =C2=A0 <br><br>Summary:=
 No issues found. This document is ready for publication.<br><br>The draft =
proposes something that prima facie appears reasonable -- using a single OS=
PF instance to set up TE LSPs for both v4 and v6. <br><br>Comments: <br><br=
>The draft is quite simple and i see no technical issues. However, i would =
like this to go through the regular IETF WG process before it gets pushed t=
o the publication pipeline.<br><br>Cheers, Manav</div>

--94eb2c122f241178820534e55d97--


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Manav Bhatia <manav@ionosnetworks.com>, "<rtg-ads@ietf.org>" <rtg-ads@ietf.org>
Thread-Topic: [RTG-DIR] RtgDir review: draft-smirnov-ospf-xaf-te
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From nobody Mon Jun 13 16:46:09 2016
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Subject: [OSPF] I-D Action: draft-ietf-ospf-transition-to-ospfv3-08.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 Open Shortest Path First IGP of the IETF.

        Title           : OSPFv3 over IPv4 for IPv6 Transition
        Authors         : I. Chen
                          A. Lindem
                          R. Atkinson
	Filename        : draft-ietf-ospf-transition-to-ospfv3-08.txt
	Pages           : 10
	Date            : 2016-06-13

Abstract:
   This document defines a mechanism to use IPv4 to transport OSPFv3
   packets.  Using OSPFv3 over IPv4 with the existing OSPFv3 Address
   Family extension can simplify transition from an OSPFv2 IPv4-only
   routing domain to an OSPFv3 dual-stack routing domain.  This document
   updates RFC 5838 to support virtual links in the IPv4 unicast address
   family when using OSPFv3 over IPv4.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-ospf-transition-to-ospfv3-08

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ospf-transition-to-ospfv3-08


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 13 17:41:39 2016
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From nobody Wed Jun 15 15:47:25 2016
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Subject: [OSPF] IPR Disclosure Cisco Systems, Inc.'s Statement about IPR related to draft-ietf-ospf-segment-routing-extensions
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Dear Peter Psenak, Stefano Previdi, Clarence Filsfils, Wim Henderickx, Jeff Tantsura, Hannes Gredler, Rob Shakir:


An IPR disclosure that pertains to your Internet-Draft entitled "OSPF
Extensions for Segment Routing"
(draft-ietf-ospf-segment-routing-extensions) was submitted to the IETF
Secretariat on  and has been posted on the "IETF Page of Intellectual Property
Rights Disclosures" (https://datatracker.ietf.org/ipr/2808/). The title of the
IPR disclosure is "Cisco Systems, Inc.'s Statement about IPR related to
draft-ietf-ospf-segment-routing-extensions"


Thank you

IETF Secretariat


From nobody Wed Jun 15 16:09:17 2016
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From: Alia Atlas <akatlas@gmail.com>
Date: Wed, 15 Jun 2016 19:09:11 -0400
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To: OSPF List <ospf@ietf.org>, draft-ietf-ospf-segment-routing-extensions@ietf.org
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Subject: Re: [OSPF] IPR Disclosure Cisco Systems, Inc.'s Statement about IPR related to draft-ietf-ospf-segment-routing-extensions
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--94eb2c0c0a06b24b3c05355935c8
Content-Type: text/plain; charset=UTF-8

Stefano, Clarence, and Peter,

Could you please clarify if this IPR disclosure is simply updating the
previously
disclosed IPR or represents additional IPR?

I do see that there is at least some overlap.

Thanks,
Alia

On Wed, Jun 15, 2016 at 6:47 PM, IETF Secretariat <ietf-ipr@ietf.org> wrote:

> Dear Peter Psenak, Stefano Previdi, Clarence Filsfils, Wim Henderickx,
> Jeff Tantsura, Hannes Gredler, Rob Shakir:
>
>
> An IPR disclosure that pertains to your Internet-Draft entitled "OSPF
> Extensions for Segment Routing"
> (draft-ietf-ospf-segment-routing-extensions) was submitted to the IETF
> Secretariat on  and has been posted on the "IETF Page of Intellectual
> Property
> Rights Disclosures" (https://datatracker.ietf.org/ipr/2808/). The title
> of the
> IPR disclosure is "Cisco Systems, Inc.'s Statement about IPR related to
> draft-ietf-ospf-segment-routing-extensions"
>
>
> Thank you
>
> IETF Secretariat
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www.ietf.org/mailman/listinfo/ospf
>

--94eb2c0c0a06b24b3c05355935c8
Content-Type: text/html; charset=UTF-8
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<div dir=3D"ltr">Stefano, Clarence, and Peter,<div><br></div><div>Could you=
 please clarify if this IPR disclosure is simply updating the previously</d=
iv><div>disclosed IPR or represents additional IPR?</div><div><br></div><di=
v>I do see that there is at least some overlap.</div><div><br></div><div>Th=
anks,</div><div>Alia</div></div><div class=3D"gmail_extra"><br><div class=
=3D"gmail_quote">On Wed, Jun 15, 2016 at 6:47 PM, IETF Secretariat <span di=
r=3D"ltr">&lt;<a href=3D"mailto:ietf-ipr@ietf.org" target=3D"_blank">ietf-i=
pr@ietf.org</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" styl=
e=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Pe=
ter Psenak, Stefano Previdi, Clarence Filsfils, Wim Henderickx, Jeff Tantsu=
ra, Hannes Gredler, Rob Shakir:<br>
<br>
<br>
An IPR disclosure that pertains to your Internet-Draft entitled &quot;OSPF<=
br>
Extensions for Segment Routing&quot;<br>
(draft-ietf-ospf-segment-routing-extensions) was submitted to the IETF<br>
Secretariat on=C2=A0 and has been posted on the &quot;IETF Page of Intellec=
tual Property<br>
Rights Disclosures&quot; (<a href=3D"https://datatracker.ietf.org/ipr/2808/=
" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/ipr/280=
8/</a>). The title of the<br>
IPR disclosure is &quot;Cisco Systems, Inc.&#39;s Statement about IPR relat=
ed to<br>
draft-ietf-ospf-segment-routing-extensions&quot;<br>
<br>
<br>
Thank you<br>
<br>
IETF Secretariat<br>
<br>
_______________________________________________<br>
OSPF mailing list<br>
<a href=3D"mailto:OSPF@ietf.org">OSPF@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/ospf" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/ospf</a><br>
</blockquote></div><br></div>

--94eb2c0c0a06b24b3c05355935c8--


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Date: Thu, 16 Jun 2016 09:03:45 +0200
From: Peter Psenak <ppsenak@cisco.com>
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Subject: Re: [OSPF] IPR Disclosure Cisco Systems, Inc.'s Statement about IPR related to draft-ietf-ospf-segment-routing-extensions
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Alia,

On 6/16/16 01:09 , Alia Atlas wrote:
> Stefano, Clarence, and Peter,
>
> Could you please clarify if this IPR disclosure is simply updating the
> previously
> disclosed IPR or represents additional IPR?

we updated the previous IPR with additional patent application.

thanks,
Peter

>
> I do see that there is at least some overlap.
>
> Thanks,
> Alia
>
> On Wed, Jun 15, 2016 at 6:47 PM, IETF Secretariat <ietf-ipr@ietf.org
> <mailto:ietf-ipr@ietf.org>> wrote:
>
>     Dear Peter Psenak, Stefano Previdi, Clarence Filsfils, Wim
>     Henderickx, Jeff Tantsura, Hannes Gredler, Rob Shakir:
>
>
>     An IPR disclosure that pertains to your Internet-Draft entitled "OSPF
>     Extensions for Segment Routing"
>     (draft-ietf-ospf-segment-routing-extensions) was submitted to the IETF
>     Secretariat on  and has been posted on the "IETF Page of
>     Intellectual Property
>     Rights Disclosures" (https://datatracker.ietf.org/ipr/2808/). The
>     title of the
>     IPR disclosure is "Cisco Systems, Inc.'s Statement about IPR related to
>     draft-ietf-ospf-segment-routing-extensions"
>
>
>     Thank you
>
>     IETF Secretariat
>
>     _______________________________________________
>     OSPF mailing list
>     OSPF@ietf.org <mailto:OSPF@ietf.org>
>     https://www.ietf.org/mailman/listinfo/ospf
>
>


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From: Alia Atlas <akatlas@gmail.com>
Date: Thu, 16 Jun 2016 10:28:01 -0400
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To: Peter Psenak <ppsenak@cisco.com>
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Cc: draft-ietf-ospf-segment-routing-extensions@ietf.org, OSPF List <ospf@ietf.org>
Subject: Re: [OSPF] IPR Disclosure Cisco Systems, Inc.'s Statement about IPR related to draft-ietf-ospf-segment-routing-extensions
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--001a114e7322a8d4070535660b87
Content-Type: text/plain; charset=UTF-8

Peter,

On Thu, Jun 16, 2016 at 3:03 AM, Peter Psenak <ppsenak@cisco.com> wrote:

> Alia,
>
> On 6/16/16 01:09 , Alia Atlas wrote:
>
>> Stefano, Clarence, and Peter,
>>
>> Could you please clarify if this IPR disclosure is simply updating the
>> previously
>> disclosed IPR or represents additional IPR?
>>
>
> we updated the previous IPR with additional patent application.
>

Ok - this is after the confirmations on the list that there was no new IPR?
That sounds like new IPR to me.

While I realize that the company claiming IPR and the terms haven't
changed, since
the IPR has changed, I think this needs to go back to the WG for an
additional WGLC.

Regards,
Alia



> thanks,
> Peter
>
>
>> I do see that there is at least some overlap.
>>
>> Thanks,
>> Alia
>>
>> On Wed, Jun 15, 2016 at 6:47 PM, IETF Secretariat <ietf-ipr@ietf.org
>> <mailto:ietf-ipr@ietf.org>> wrote:
>>
>>     Dear Peter Psenak, Stefano Previdi, Clarence Filsfils, Wim
>>     Henderickx, Jeff Tantsura, Hannes Gredler, Rob Shakir:
>>
>>
>>     An IPR disclosure that pertains to your Internet-Draft entitled "OSPF
>>     Extensions for Segment Routing"
>>     (draft-ietf-ospf-segment-routing-extensions) was submitted to the IETF
>>     Secretariat on  and has been posted on the "IETF Page of
>>     Intellectual Property
>>     Rights Disclosures" (https://datatracker.ietf.org/ipr/2808/). The
>>     title of the
>>     IPR disclosure is "Cisco Systems, Inc.'s Statement about IPR related
>> to
>>     draft-ietf-ospf-segment-routing-extensions"
>>
>>
>>     Thank you
>>
>>     IETF Secretariat
>>
>>     _______________________________________________
>>     OSPF mailing list
>>     OSPF@ietf.org <mailto:OSPF@ietf.org>
>>     https://www.ietf.org/mailman/listinfo/ospf
>>
>>
>>
>

--001a114e7322a8d4070535660b87
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Peter,<div><br></div><div class=3D"gmail_extra"><div class=
=3D"gmail_quote">On Thu, Jun 16, 2016 at 3:03 AM, Peter Psenak <span dir=3D=
"ltr">&lt;<a href=3D"mailto:ppsenak@cisco.com" target=3D"_blank">ppsenak@ci=
sco.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D=
"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Alia,<span =
class=3D""><br>
<br>
On 6/16/16 01:09 , Alia Atlas wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Stefano, Clarence, and Peter,<br>
<br>
Could you please clarify if this IPR disclosure is simply updating the<br>
previously<br>
disclosed IPR or represents additional IPR?<br>
</blockquote>
<br></span>
we updated the previous IPR with additional patent application.<br></blockq=
uote><div><br></div><div>Ok - this is after the confirmations on the list t=
hat there was no new IPR?</div><div>That sounds like new IPR to me.</div><d=
iv><br></div><div>While I realize that the company claiming IPR and the ter=
ms haven&#39;t changed, since</div><div>the IPR has changed, I think this n=
eeds to go back to the WG for an additional WGLC.</div><div><br></div><div>=
Regards,</div><div>Alia</div><div><br></div><div>=C2=A0</div><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;p=
adding-left:1ex">
thanks,<br>
Peter<br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><span class=3D"">
<br>
I do see that there is at least some overlap.<br>
<br>
Thanks,<br>
Alia<br>
<br>
On Wed, Jun 15, 2016 at 6:47 PM, IETF Secretariat &lt;<a href=3D"mailto:iet=
f-ipr@ietf.org" target=3D"_blank">ietf-ipr@ietf.org</a><br></span><span cla=
ss=3D"">
&lt;mailto:<a href=3D"mailto:ietf-ipr@ietf.org" target=3D"_blank">ietf-ipr@=
ietf.org</a>&gt;&gt; wrote:<br>
<br>
=C2=A0 =C2=A0 Dear Peter Psenak, Stefano Previdi, Clarence Filsfils, Wim<br=
>
=C2=A0 =C2=A0 Henderickx, Jeff Tantsura, Hannes Gredler, Rob Shakir:<br>
<br>
<br>
=C2=A0 =C2=A0 An IPR disclosure that pertains to your Internet-Draft entitl=
ed &quot;OSPF<br>
=C2=A0 =C2=A0 Extensions for Segment Routing&quot;<br>
=C2=A0 =C2=A0 (draft-ietf-ospf-segment-routing-extensions) was submitted to=
 the IETF<br>
=C2=A0 =C2=A0 Secretariat on=C2=A0 and has been posted on the &quot;IETF Pa=
ge of<br>
=C2=A0 =C2=A0 Intellectual Property<br>
=C2=A0 =C2=A0 Rights Disclosures&quot; (<a href=3D"https://datatracker.ietf=
.org/ipr/2808/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ie=
tf.org/ipr/2808/</a>). The<br>
=C2=A0 =C2=A0 title of the<br>
=C2=A0 =C2=A0 IPR disclosure is &quot;Cisco Systems, Inc.&#39;s Statement a=
bout IPR related to<br>
=C2=A0 =C2=A0 draft-ietf-ospf-segment-routing-extensions&quot;<br>
<br>
<br>
=C2=A0 =C2=A0 Thank you<br>
<br>
=C2=A0 =C2=A0 IETF Secretariat<br>
<br>
=C2=A0 =C2=A0 _______________________________________________<br>
=C2=A0 =C2=A0 OSPF mailing list<br></span>
=C2=A0 =C2=A0 <a href=3D"mailto:OSPF@ietf.org" target=3D"_blank">OSPF@ietf.=
org</a> &lt;mailto:<a href=3D"mailto:OSPF@ietf.org" target=3D"_blank">OSPF@=
ietf.org</a>&gt;<br>
=C2=A0 =C2=A0 <a href=3D"https://www.ietf.org/mailman/listinfo/ospf" rel=3D=
"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/listinfo/ospf</=
a><br>
<br>
<br>
</blockquote>
<br>
</blockquote></div><br></div></div>

--001a114e7322a8d4070535660b87--


From nobody Fri Jun 17 06:04:34 2016
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Subject: [OSPF] I-D Action: draft-ietf-ospf-transition-to-ospfv3-09.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 Open Shortest Path First IGP of the IETF.

        Title           : OSPFv3 over IPv4 for IPv6 Transition
        Authors         : I. Chen
                          A. Lindem
                          R. Atkinson
	Filename        : draft-ietf-ospf-transition-to-ospfv3-09.txt
	Pages           : 10
	Date            : 2016-06-17

Abstract:
   This document defines a mechanism to use IPv4 to transport OSPFv3
   packets.  Using OSPFv3 over IPv4 with the existing OSPFv3 Address
   Family extension can simplify transition from an OSPFv2 IPv4-only
   routing domain to an OSPFv3 dual-stack routing domain.  This document
   updates RFC 5838 to support virtual links in the IPv4 unicast address
   family when using OSPFv3 over IPv4.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-ospf-transition-to-ospfv3-09

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ospf-transition-to-ospfv3-09


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 Sat Jun 18 15:14:24 2016
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Date: Sun, 19 Jun 2016 00:06:31 +0200
From: Anton Smirnov <asmirnov@cisco.com>
Organization: Cisco Systems
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Subject: Re: [OSPF] RtgDir review: draft-smirnov-ospf-xaf-te
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    Hi Manav,
    thanks for your review.

    I just published new revision of the draft addressing comments of 
the second Routing Directorate review (by Ice Wijnands). In brief, there 
is a mention of applicability to sub-LSPs of a Point-to-Multipoint LSP 
and rewritten example (hopefully, for better readability).

Anton


On 06/10/2016 06:56 AM, Manav Bhatia wrote:
> Hello,
>
> I have been selected as the Routing Directorate reviewer for this draft.
> The Routing Directorate seeks to review all routing or routing-related
> drafts as they pass through IETF last call and IESG review, and
> sometimes on special request. The purpose of the review is to provide
> assistance to the Routing ADs. For more information about the Routing
> Directorate, please see http://trac.tools.ietf.org/area/rtg/trac/wiki/RtgDir
>
> Although these comments are primarily for the use of the Routing ADs, it
> would be helpful if you could consider them along with any other IETF
> Last Call comments that you receive, and strive to resolve them through
> discussion or by updating the draft.
>
> Document: draft-smirnov-ospf-xaf-te
> Reviewer: Manav Bhatia
> Review Date: 10/06/2016
> IETF LC End Date: date-if-known
> Intended Status: Standards Track
>
> Summary: No issues found. This document is ready for publication.
>
> The draft proposes something that prima facie appears reasonable --
> using a single OSPF instance to set up TE LSPs for both v4 and v6.
>
> Comments:
>
> The draft is quite simple and i see no technical issues. However, i
> would like this to go through the regular IETF WG process before it gets
> pushed to the publication pipeline.
>
> Cheers, Manav


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Support as coauthor.

thanks,
Peter

On 6/20/16 15:40 , Acee Lindem (acee) wrote:
> We are doing an additional last WGLC due for the IPR update for
> https://www.ietf.org/id/draft-ietf-ospf-segment-routing-extensions-08.txt
>
> Here are links to the previous and current IPR disclosures:
>
>      Previous: https://datatracker.ietf.org/ipr/2401/
>      Updated: https://datatracker.ietf.org/ipr/2808/
>
> Please send any comments to his list before Tuesday July 5th, 2016.
>
> Thanks,
> Acee
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www.ietf.org/mailman/listinfo/ospf
> .
>


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Date: Tue, 21 Jun 2016 00:38:48 +0400
From: Jeff Tantsura <jefftant.ietf@gmail.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, OSPF WG List <ospf@ietf.org>
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Acee,

Support as co- author.

Thanks,
Jeff

>On 6/20/16 15:40 , Acee Lindem (acee) wrote:
>> We are doing an additional last WGLC due for the IPR update for
>> https://www.ietf.org/id/draft-ietf-ospf-segment-routing-extensions-08.txt
>>
>> Here are links to the previous and current IPR disclosures:
>>
>>      Previous: https://datatracker.ietf.org/ipr/2401/
>>      Updated: https://datatracker.ietf.org/ipr/2808/
>>
>> Please send any comments to his list before Tuesday July 5th, 2016.
>>
>> Thanks,
>> Acee
>>
>> _______________________________________________
>> OSPF mailing list
>> OSPF@ietf.org
>> https://www.ietf.org/mailman/listinfo/ospf
>> .
>>
>
>_______________________________________________
>OSPF mailing list
>OSPF@ietf.org
>https://www.ietf.org/mailman/listinfo/ospf



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From: Alia Atlas <akatlas@gmail.com>
Date: Mon, 20 Jun 2016 16:42:03 -0400
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Subject: Re: [OSPF] Working Group Last Call on IPR Update for OSPFv2 Segment Routing Extensions
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--94eb2c0c0a06ae14130535bbbc4b
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To be clear, this is a repeat WG Last Call due to additional IPR declared
after
the WGLC by a co-author.

If anyone has concerns as a result about the work progressing, please state
that.
Otherwise, we know that the WG was previously supportive.

Regards,
Alia

On Mon, Jun 20, 2016 at 4:38 PM, Jeff Tantsura <jefftant.ietf@gmail.com>
wrote:

> Acee,
>
> Support as co- author.
>
> Thanks,
> Jeff
>
> >On 6/20/16 15:40 , Acee Lindem (acee) wrote:
> >> We are doing an additional last WGLC due for the IPR update for
> >>
> https://www.ietf.org/id/draft-ietf-ospf-segment-routing-extensions-08.txt
> >>
> >> Here are links to the previous and current IPR disclosures:
> >>
> >>      Previous: https://datatracker.ietf.org/ipr/2401/
> >>      Updated: https://datatracker.ietf.org/ipr/2808/
> >>
> >> Please send any comments to his list before Tuesday July 5th, 2016.
> >>
> >> Thanks,
> >> Acee
> >>
> >> _______________________________________________
> >> OSPF mailing list
> >> OSPF@ietf.org
> >> https://www.ietf.org/mailman/listinfo/ospf
> >> .
> >>
> >
> >_______________________________________________
> >OSPF mailing list
> >OSPF@ietf.org
> >https://www.ietf.org/mailman/listinfo/ospf
>
>
> _______________________________________________
> OSPF mailing list
> OSPF@ietf.org
> https://www.ietf.org/mailman/listinfo/ospf
>

--94eb2c0c0a06ae14130535bbbc4b
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<div dir=3D"ltr">To be clear, this is a repeat WG Last Call due to addition=
al IPR declared after<div>the WGLC by a co-author.</div><div><br></div><div=
>If anyone has concerns as a result about the work progressing, please stat=
e that.</div><div>Otherwise, we know that the WG was previously supportive.=
</div><div><br></div><div>Regards,</div><div>Alia</div></div><div class=3D"=
gmail_extra"><br><div class=3D"gmail_quote">On Mon, Jun 20, 2016 at 4:38 PM=
, Jeff Tantsura <span dir=3D"ltr">&lt;<a href=3D"mailto:jefftant.ietf@gmail=
.com" target=3D"_blank">jefftant.ietf@gmail.com</a>&gt;</span> wrote:<br><b=
lockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px =
#ccc solid;padding-left:1ex">Acee,<br>
<br>
Support as co- author.<br>
<br>
Thanks,<br>
Jeff<br>
<div class=3D"HOEnZb"><div class=3D"h5"><br>
&gt;On 6/20/16 15:40 , Acee Lindem (acee) wrote:<br>
&gt;&gt; We are doing an additional last WGLC due for the IPR update for<br=
>
&gt;&gt; <a href=3D"https://www.ietf.org/id/draft-ietf-ospf-segment-routing=
-extensions-08.txt" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.o=
rg/id/draft-ietf-ospf-segment-routing-extensions-08.txt</a><br>
&gt;&gt;<br>
&gt;&gt; Here are links to the previous and current IPR disclosures:<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 Previous: <a href=3D"https://datatracker.ietf.=
org/ipr/2401/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.iet=
f.org/ipr/2401/</a><br>
&gt;&gt;=C2=A0 =C2=A0 =C2=A0 Updated: <a href=3D"https://datatracker.ietf.o=
rg/ipr/2808/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf=
.org/ipr/2808/</a><br>
&gt;&gt;<br>
&gt;&gt; Please send any comments to his list before Tuesday July 5th, 2016=
.<br>
&gt;&gt;<br>
&gt;&gt; Thanks,<br>
&gt;&gt; Acee<br>
&gt;&gt;<br>
&gt;&gt; _______________________________________________<br>
&gt;&gt; OSPF mailing list<br>
&gt;&gt; <a href=3D"mailto:OSPF@ietf.org">OSPF@ietf.org</a><br>
&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/ospf" rel=3D"nore=
ferrer" target=3D"_blank">https://www.ietf.org/mailman/listinfo/ospf</a><br=
>
&gt;&gt; .<br>
&gt;&gt;<br>
&gt;<br>
&gt;_______________________________________________<br>
&gt;OSPF mailing list<br>
&gt;<a href=3D"mailto:OSPF@ietf.org">OSPF@ietf.org</a><br>
&gt;<a href=3D"https://www.ietf.org/mailman/listinfo/ospf" rel=3D"noreferre=
r" target=3D"_blank">https://www.ietf.org/mailman/listinfo/ospf</a><br>
<br>
<br>
_______________________________________________<br>
OSPF mailing list<br>
<a href=3D"mailto:OSPF@ietf.org">OSPF@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/ospf" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/ospf</a><br>
</div></div></blockquote></div><br></div>

--94eb2c0c0a06ae14130535bbbc4b--


From nobody Mon Jun 20 17:23:00 2016
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Dear Rob Shakir, Hannes Gredler, Peter Psenak, Stefano Previdi, Clarence Filsfils, Wim Henderickx, Jeff Tantsura:


An IPR disclosure that pertains to your Internet-Draft entitled "OSPFv3
Extensions for Segment Routing"
(draft-ietf-ospf-ospfv3-segment-routing-extensions) was submitted to the IETF
Secretariat on  and has been posted on the "IETF Page of Intellectual Property
Rights Disclosures" (https://datatracker.ietf.org/ipr/2812/). The title of the
IPR disclosure is "Cisco Systems, Inc.'s Statement about IPR related to
draft-ietf-ospf-ospfv3-segment-routing-extensions"


Thank you

IETF Secretariat


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From: Alan Davey <Alan.Davey@metaswitch.com>
To: "Derek Man-Kit Yeung (myeung)" <myeung@cisco.com>, "draft-ietf-ospf-yang@ietf.org" <draft-ietf-ospf-yang@ietf.org>
Thread-Topic: draft-ietf-ospf-yang-03 questions and doubts
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Archived-At: <https://mailarchive.ietf.org/arch/msg/ospf/cvOuegcPLcwvjphPxiUhEl1cpcg>
Cc: OSPF WG List <ospf@ietf.org>
Subject: Re: [OSPF] draft-ietf-ospf-yang-03 questions and doubts
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--_000_SN1PR0201MB180776177276613412A5EE02F92B0SN1PR0201MB1807_
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Hi Derek

Did you have any thoughts on my email below?  I have not seen any response.

Thanks
Alan

From: Alan Davey
Sent: 12 April 2016 07:58
To: 'Derek Man-Kit Yeung (myeung)' <myeung@cisco.com>; draft-ietf-ospf-yang=
@ietf.org
Cc: OSPF WG List <ospf@ietf.org>
Subject: RE: draft-ietf-ospf-yang-03 questions and doubts

Hi Derek

Thanks for your email, apologies for the delay in getting back to you.  I h=
ave followed up on a couple of points from our email exchange.  Please let =
me know your thoughts on the following.

On the subject of separate containers for OSPFv2 and OSPFv3 interfaces, con=
ditional statements add complexity.

My analogy here is writing program code.  In a similar situation, to suppor=
t OSPFv2 and OSPFv3, I would have different top level functions for the two=
 versions and then call common functions where possible.  This gives a stra=
ightforward top-level with no conditional statements; simpler to write and =
easier to read and understand.

Therefore, I think that a simpler definition would follow from having versi=
on-specific top level containers which then include common and version-spec=
ific common definitions.

In interface-common-operation, I think that the DR and BDR information is p=
rovided to show the DR or BDR for a link as identified by the protocol.  Th=
erefore, for OSPFv3, this identification consists of the Router ID plus the=
 interface ID.  Note the following.


-          On the use of interface ID, as per RFC 5340, this is used in OSP=
Fv3 to uniquely identify (among its own interfaces) the DR's interface to t=
he link.  (Recall that a router may have multiple interfaces to the link.)

-          Using the link-local IPv6 address may not be the most user-frien=
dly way of identifying the link.  The link-local address is normally auto-g=
enerated by the system, not assigned by the user, and therefore the user is=
 likely to have to search the system configuration to identify the link to =
which it is associated.

-          The leaf bdr-ip-addr still has "type inet:ipv4-address" in versi=
on 04 of the draft.

Regards
Alan Davey

From: Derek Man-Kit Yeung (myeung) [mailto:myeung@cisco.com]
Sent: 03 March 2016 21:55
To: Alan Davey <Alan.Davey@metaswitch.com<mailto:Alan.Davey@metaswitch.com>=
>; draft-ietf-ospf-yang@ietf.org<mailto:draft-ietf-ospf-yang@ietf.org>
Cc: OSPF WG List <ospf@ietf.org<mailto:ospf@ietf.org>>
Subject: Re: draft-ietf-ospf-yang-03 questions and doubts

Hi Alan,

Please see DY> below.

From: Alan Davey <Alan.Davey@metaswitch.com<mailto:Alan.Davey@metaswitch.co=
m>>
Date: Thursday, February 18, 2016 at 3:28 AM
To: myeung <myeung@cisco.com<mailto:myeung@cisco.com>>, "draft-ietf-ospf-ya=
ng@ietf.org<mailto:draft-ietf-ospf-yang@ietf.org>" <draft-ietf-ospf-yang@ie=
tf.org<mailto:draft-ietf-ospf-yang@ietf.org>>
Cc: OSPF WG List <ospf@ietf.org<mailto:ospf@ietf.org>>
Subject: RE: draft-ietf-ospf-yang-03 questions and doubts

Hi Derek

Thank you for your response, and apologies for the delay in getting back to=
 you.  Have you considered distinct ospfv3-interface-operation and ospfv2-i=
nterface-operation?  Or even distinct "container ospfv2" and "container osp=
fv3"?

DY> No, we do not plan to have explicit ospfv2 and ospfv3 container. We use=
d when statement or if-feature to take care of OSPFv2 vs OSPFv3 specific fi=
elds in general.

There are a number of differences between the Interface Data Structure defi=
ned in RFC2328 and in RFC5340.  In particular, the following.  Do you plan =
to add all of these differences to the interface-operation grouping?


-          DR and BDR identification.

o   As you wrote, section 9 of RFC2328 specifies that the Interface Data St=
ructure includes the Router ID and IP address for the DR and BDR.

o   Section 4.1.2 of RFC5340 does not specify how to identify the DR and BD=
R, but given the OSPFv3 protocol, it seems reasonable that the router ID an=
d interface ID would be stored.

DY> In OSPFv3, the DR/BDR is still identified by a router ID. The interface=
 ID of the DR is used when generating LSA and by itself do not identify the=
 DR/BDR.
DY> Given the DR/BDR router ID/ip address, one can locate the corresponding=
 neighbor information and find the interface ID there.
DY> So we are not going the duplicate the interface ID of the DR in the int=
erface container again.


-          Section 4.1.2 of RFC5340 specifies a number of objects that do n=
ot appear in the RFC2328 version of the Interface Data Structure, as follow=
s.

o   Interface ID.

o   Instance ID.

DY> The two above will be added. It is missing now. To be clear. It is the =
interface ID of the local router, not the one of the DR,  for the interface=
.


o   List of LSAs with link-local scope.

DY> The model already have link-local LSA database.


o   List of IPv6 prefixes configured for the attached link.

DY> Understood that it is mentioned in the OSPFv3 RFC.
DY> However, looking at a few implementations there is no explicit display =
of such information with the interface related OSPF show command.
DY> The IPv6 prefixes (or IPv4 prefix in OSPFv2) advertised by the router c=
ould be found already either from the interface module (IPv4/IPv6 augment) =
or from the LSA database itself.
DY> Extracting it again in OSPF model interface operation data seems redund=
ant.
DY> We don't think we need it in the base model, but vendors could augment =
it if they find it useful.

Thanks,
- Derek

Regards
Alan

From: Derek Man-Kit Yeung (myeung) [mailto:myeung@cisco.com]
Sent: 04 February 2016 19:39
To: Alan Davey <Alan.Davey@metaswitch.com<mailto:Alan.Davey@metaswitch.com>=
>; draft-ietf-ospf-yang@ietf.org<mailto:draft-ietf-ospf-yang@ietf.org>
Cc: ospf@ietf.org<mailto:ospf@ietf.org>
Subject: Re: draft-ietf-ospf-yang-03 questions and doubts

Hi Alan,

Thanks for the comments.
As you have pointed out, there are OSPFv3 specific fields missing in the mo=
del now. For example, instance ID and interface ID. We will add them in the=
 next update.

As for the DR, DR is conceptually one of the neighbor.
In OSPFv2, the DR's router ID and IP address are used in protocol operation=
.
While in OSPFv3, the DR's router ID and interface ID are used in protocol o=
peration.
According to OSPFv2 and OSPFv3 RFC, the interface structure should keep bot=
h the DR's router ID and IP address.

We have the following in the current model.

  grouping interface-operation {
    leaf dr {
      type inet:ipv4-address;
      description "Designated Router (DR) IP address.";
    }
  }
  grouping neighbor-operation {
    leaf dr {
      type yang:dotted-quad;
      description
        "Designated Router.";
    }
  }

To better match the RFC and accommodate both OSPFv2 and OSPFv3 in a cleaner=
 way, we plan to make the following changes.

  grouping interface-operation {
    leaf dr-router-id {
      type yang:dotted-quad;
      description
        "Designated Router (DR) router ID.";
    }
    leaf dr-ip-address {
      type inet:ip-address;
      description "Designated Router (DR) IP address.";
    }
  }
  grouping neighbor-operation {
    leaf dr-router-id {
      type yang:dotted-quad;
      description
        "Neighbor's Designated Router (DR) router ID.";
    }
    leaf dr-ip-address {
      type inet:ip-address;
      description "Neighbor's Designated Router (DR) IP address.";
    }
  }

If one need the DR's interface ID in the OSPFv3 case, it could be found by =
locating the neighbor entry for the DR and get the interface ID (To be adde=
d) field there.

Comments welcome.

Thanks,
- Derek

From: Alan Davey <Alan.Davey@metaswitch.com<mailto:Alan.Davey@metaswitch.co=
m>>
Date: Tuesday, December 15, 2015 8:23 AM
To: "draft-ietf-ospf-yang@ietf.org<mailto:draft-ietf-ospf-yang@ietf.org>" <=
draft-ietf-ospf-yang@ietf.org<mailto:draft-ietf-ospf-yang@ietf.org>>
Cc: "ospf@ietf.org<mailto:ospf@ietf.org>" <ospf@ietf.org<mailto:ospf@ietf.o=
rg>>
Subject: draft-ietf-ospf-yang-03 questions and doubts

Folks

I have a doubt about draft-ietf-ospf-yang-03.  Please let me know your thou=
ghts on the following.

The text is OSPFv2-specific in places.  I think that it would be better to =
define separate top-level groupings and containers for OSPFv2 and OSPFv3 an=
d define common groupings and containers, where possible, that are used by =
both.

For example, grouping interface-operation contains the following, which is =
incorrect for OSPFv3.


-          leaf dr with type ipv4-address

-          leaf bdr with type ipv4-address.

I think that it would be better to define something along the following lin=
es.


-          ospfv3-interface-operation {

o   uses interface-config

o   uses ospf-common-interface-operation

o   leaf dr {

?  type if:interface-ref

?  description:

*                   "The remote interface ID used by the Designated Router =
on

*                   this link.  This is the interface index of the interfac=
e local to the DR.";

o   etc

-          ospfv2-interface-operation {

o   uses interface-config

o   uses ospf-common-interface-operation

o   leaf dr {

?           type inet:ipv4-address;

?           description "Designated Router (DR) IP address.";

o   etc.

Regards
Alan Davey


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</head>
<body lang=3D"EN-GB" link=3D"blue" vlink=3D"purple">
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hi Derek<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Did you have any thoug=
hts on my email below?&nbsp; I have not seen any response.<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Alan<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"mso-fareast-languag=
e:EN-GB">From:</span></b><span lang=3D"EN-US" style=3D"mso-fareast-language=
:EN-GB"> Alan Davey
<br>
<b>Sent:</b> 12 April 2016 07:58<br>
<b>To:</b> 'Derek Man-Kit Yeung (myeung)' &lt;myeung@cisco.com&gt;; draft-i=
etf-ospf-yang@ietf.org<br>
<b>Cc:</b> OSPF WG List &lt;ospf@ietf.org&gt;<br>
<b>Subject:</b> RE: draft-ietf-ospf-yang-03 questions and doubts<o:p></o:p>=
</span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hi Derek<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks for your email,=
 apologies for the delay in getting back to you.&nbsp; I have followed up o=
n a couple of points from our email exchange.&nbsp; Please let me know your=
 thoughts on the following.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">On the subject of sepa=
rate containers for OSPFv2 and OSPFv3 interfaces, conditional statements ad=
d complexity.&nbsp;
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">My analogy here is wri=
ting program code.&nbsp; In a similar situation, to support OSPFv2 and OSPF=
v3, I would have different top level functions for the two versions and the=
n call common functions where possible.&nbsp;
 This gives a straightforward top-level with no conditional statements; sim=
pler to write and easier to read and understand.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Therefore, I think tha=
t a simpler definition would follow from having version-specific top level =
containers which then include common and version-specific common definition=
s.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">In interface-common-op=
eration, I think that the DR and BDR information is provided to show the DR=
 or BDR for a link as identified by the protocol.&nbsp; Therefore, for OSPF=
v3, this identification consists of the Router
 ID plus the interface ID.&nbsp; Note the following.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l2 leve=
l1 lfo2"><![if !supportLists]><span style=3D"color:#1F497D"><span style=3D"=
mso-list:Ignore">-<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">On the use of =
interface ID, as per RFC 5340, this is used in OSPFv3 to uniquely identify =
(among its own interfaces) the DR&#8217;s interface to the link.&nbsp; (Rec=
all that a router may have multiple interfaces
 to the link.)<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l2 leve=
l1 lfo2"><![if !supportLists]><span style=3D"color:#1F497D"><span style=3D"=
mso-list:Ignore">-<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">Using the link=
-local IPv6 address may not be the most user-friendly way of identifying th=
e link.&nbsp; The link-local address is normally auto-generated by the syst=
em, not assigned by the user, and therefore
 the user is likely to have to search the system configuration to identify =
the link to which it is associated.<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l2 leve=
l1 lfo2"><![if !supportLists]><span style=3D"color:#1F497D"><span style=3D"=
mso-list:Ignore">-<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">The leaf bdr-i=
p-addr still has &#8220;type inet:ipv4-address&#8221; in version 04 of the =
draft.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Regards<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Alan Davey<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"mso-fareast-languag=
e:EN-GB">From:</span></b><span lang=3D"EN-US" style=3D"mso-fareast-language=
:EN-GB"> Derek Man-Kit Yeung (myeung) [<a href=3D"mailto:myeung@cisco.com">=
mailto:myeung@cisco.com</a>]
<br>
<b>Sent:</b> 03 March 2016 21:55<br>
<b>To:</b> Alan Davey &lt;<a href=3D"mailto:Alan.Davey@metaswitch.com">Alan=
.Davey@metaswitch.com</a>&gt;;
<a href=3D"mailto:draft-ietf-ospf-yang@ietf.org">draft-ietf-ospf-yang@ietf.=
org</a><br>
<b>Cc:</b> OSPF WG List &lt;<a href=3D"mailto:ospf@ietf.org">ospf@ietf.org<=
/a>&gt;<br>
<b>Subject:</b> Re: draft-ietf-ospf-yang-03 questions and doubts<o:p></o:p>=
</span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Hi Alan=
,</span><span style=3D"font-size:10.5pt;color:black;mso-fareast-language:EN=
-GB"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Please =
see DY&gt; below.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From: </span></b><spa=
n style=3D"color:black">Alan Davey &lt;</span><a href=3D"mailto:Alan.Davey@=
metaswitch.com">Alan.Davey@metaswitch.com</a><span style=3D"color:black">&g=
t;<br>
<b>Date: </b>Thursday, February 18, 2016 at 3:28 AM<br>
<b>To: </b>myeung &lt;</span><a href=3D"mailto:myeung@cisco.com">myeung@cis=
co.com</a><span style=3D"color:black">&gt;, &quot;</span><a href=3D"mailto:=
draft-ietf-ospf-yang@ietf.org">draft-ietf-ospf-yang@ietf.org</a><span style=
=3D"color:black">&quot; &lt;</span><a href=3D"mailto:draft-ietf-ospf-yang@i=
etf.org">draft-ietf-ospf-yang@ietf.org</a><span style=3D"color:black">&gt;<=
br>
<b>Cc: </b>OSPF WG List &lt;</span><a href=3D"mailto:ospf@ietf.org">ospf@ie=
tf.org</a><span style=3D"color:black">&gt;<br>
<b>Subject: </b>RE: draft-ietf-ospf-yang-03 questions and doubts<o:p></o:p>=
</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black"><o:p>&n=
bsp;</o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hi Derek</span><span s=
tyle=3D"color:black"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">&nbsp;</span><span sty=
le=3D"color:black"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thank you for your res=
ponse, and apologies for the delay in getting back to you.&nbsp; Have you c=
onsidered distinct ospfv3-interface-operation and ospfv2-interface-operatio=
n?&nbsp; Or even distinct &#8220;container ospfv2&#8221; and
 &#8220;container ospfv3&#8221;?</span><span style=3D"color:black"><o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">&nbsp;</span><span sty=
le=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; No, we do not plan to have explicit ospfv2 and o=
spfv3 container. We used when statement or if-feature to take care of OSPFv=
2 vs OSPFv3 specific fields in general.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">There are a number of =
differences between the Interface Data Structure defined in RFC2328 and in =
RFC5340. &nbsp;In particular, the following.&nbsp; Do you plan to add all o=
f these differences to the interface-operation
 grouping?</span><span style=3D"color:black"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">&nbsp;</span><span sty=
le=3D"color:black"><o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l0 leve=
l1 lfo4"><![if !supportLists]><span style=3D"color:black"><span style=3D"ms=
o-list:Ignore">-<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">DR and BDR ide=
ntification.</span><span style=3D"color:black"><o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l0 level2 lfo4">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">As you wrote, =
section 9 of RFC2328 specifies that the Interface Data Structure includes t=
he Router ID and IP address for the DR and BDR.</span><span style=3D"color:=
black"><o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l0 level2 lfo4">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">Section 4.1.2 =
of RFC5340 does not specify how to identify the DR and BDR, but given the O=
SPFv3 protocol, it seems reasonable that the router ID and interface ID wou=
ld be stored.</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; In OSPFv3, the DR/BDR is still identified by a r=
outer ID. The interface ID of the DR is used when generating LSA and by its=
elf do not identify the DR/BDR.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; Given the DR/BDR router ID/ip address, one can l=
ocate the corresponding neighbor information and find the interface ID ther=
e.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; So we are not going the duplicate the interface =
ID of the DR in the interface container again.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l0 leve=
l1 lfo4"><![if !supportLists]><span style=3D"color:black"><span style=3D"ms=
o-list:Ignore">-<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">Section 4.1.2 =
of RFC5340 specifies a number of objects that do not appear in the RFC2328 =
version of the Interface Data Structure, as follows.</span><span style=3D"c=
olor:black"><o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l0 level2 lfo4">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">Interface ID.<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l0 level2 lfo4">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">Instance ID.</=
span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; The two above will be added. It is missing now. =
To be clear. It is the interface ID of the local router, not the one of the=
 DR, &nbsp;for the interface.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l0 level2 lfo4">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">List of LSAs w=
ith link-local scope.</span><span style=3D"color:black"><o:p></o:p></span><=
/p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; The model already have link-local LSA database.<=
o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l0 level2 lfo4">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:#1F497D">List of IPv6 p=
refixes configured for the attached link.</span><span style=3D"color:black"=
><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; Understood that it is mentioned in the OSPFv3 RF=
C.&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; However, looking at a few implementations there =
is no explicit display of such information with the interface related OSPF =
show command.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; The IPv6 prefixes (or IPv4 prefix in OSPFv2) adv=
ertised by the router could be found already either from the interface modu=
le (IPv4/IPv6 augment) or from the LSA
 database itself.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; Extracting it again in OSPF model interface oper=
ation data seems redundant.<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">DY&gt; We don&#8217;t think we need it in the base mode=
l, but vendors could augment it if they find it useful.<o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">Thanks,<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">- Derek<o:p></o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">&nbsp;</span><span sty=
le=3D"color:black"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Regards</span><span st=
yle=3D"color:black"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Alan</span><span style=
=3D"color:black"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">&nbsp;</span><span sty=
le=3D"color:black"><o:p></o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"color:black;mso-far=
east-language:EN-GB">From:</span></b><span lang=3D"EN-US" style=3D"color:bl=
ack;mso-fareast-language:EN-GB"> Derek Man-Kit Yeung (myeung) [</span><a hr=
ef=3D"mailto:myeung@cisco.com"><span lang=3D"EN-US" style=3D"mso-fareast-la=
nguage:EN-GB">mailto:myeung@cisco.com</span></a><span lang=3D"EN-US" style=
=3D"color:black;mso-fareast-language:EN-GB">]
<br>
<b>Sent:</b> 04 February 2016 19:39<br>
<b>To:</b> Alan Davey &lt;</span><a href=3D"mailto:Alan.Davey@metaswitch.co=
m"><span lang=3D"EN-US" style=3D"mso-fareast-language:EN-GB">Alan.Davey@met=
aswitch.com</span></a><span lang=3D"EN-US" style=3D"color:black;mso-fareast=
-language:EN-GB">&gt;;
</span><a href=3D"mailto:draft-ietf-ospf-yang@ietf.org"><span lang=3D"EN-US=
" style=3D"mso-fareast-language:EN-GB">draft-ietf-ospf-yang@ietf.org</span>=
</a><span lang=3D"EN-US" style=3D"color:black;mso-fareast-language:EN-GB"><=
br>
<b>Cc:</b> </span><a href=3D"mailto:ospf@ietf.org"><span lang=3D"EN-US" sty=
le=3D"mso-fareast-language:EN-GB">ospf@ietf.org</span></a><span lang=3D"EN-=
US" style=3D"color:black;mso-fareast-language:EN-GB"><br>
<b>Subject:</b> Re: draft-ietf-ospf-yang-03 questions and doubts</span><spa=
n style=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><span style=3D"color:black">&nbsp;<o:p></o:p></span>=
</p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Hi Alan=
,</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Thanks =
for the comments.</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">As you =
have pointed out, there are OSPFv3 specific fields missing in the model now=
. For example, instance ID and interface ID. We will add them in the next u=
pdate.</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">As for =
the DR, DR is conceptually one of the neighbor.&nbsp;</span><span style=3D"=
color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">In OSPF=
v2, the DR's router ID and IP address are used in protocol operation.</span=
><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">While i=
n OSPFv3, the DR's router ID and interface ID are used in protocol operatio=
n.</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Accordi=
ng to OSPFv2 and OSPFv3 RFC, the interface structure should keep both the D=
R's router ID and IP address.</span><span style=3D"color:black"><o:p></o:p>=
</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">We have=
 the following in the current model.</span><span style=3D"color:black"><o:p=
></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
grouping interface-operation {</span><span style=3D"color:black"><o:p></o:p=
></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; leaf dr {</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; type inet:ipv4-address;</span><span style=3D"color:black"><o:=
p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; description &quot;Designated Router (DR) IP address.&quot;;</=
span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; }</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
}</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
grouping neighbor-operation {</span><span style=3D"color:black"><o:p></o:p>=
</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; leaf dr {</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; type yang:dotted-quad;</span><span style=3D"color:black"><o:p=
></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; description</span><span style=3D"color:black"><o:p></o:p></sp=
an></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; &nbsp; &quot;Designated Router.&quot;;</span><span style=3D"c=
olor:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; }</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
}</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">To bett=
er match the RFC and accommodate both OSPFv2 and OSPFv3 in a cleaner way, w=
e plan to make the following changes.</span><span style=3D"color:black"><o:=
p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
grouping interface-operation {</span><span style=3D"color:black"><o:p></o:p=
></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; leaf dr-router-id {</span><span style=3D"color:black"><o:p></o:p></s=
pan></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; type yang:dotted-quad;</span><span style=3D"color:black"><o:p=
></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; description</span><span style=3D"color:black"><o:p></o:p></sp=
an></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; &nbsp; &quot;Designated Router (DR) router ID.&quot;;</span><=
span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; }</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; leaf dr-ip-address {</span><span style=3D"color:black"><o:p></o:p></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; type inet:ip-address;</span><span style=3D"color:black"><o:p>=
</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; description &quot;Designated Router (DR) IP address.&quot;;</=
span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; }</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
}</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
grouping neighbor-operation {</span><span style=3D"color:black"><o:p></o:p>=
</span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; leaf dr-router-id {</span><span style=3D"color:black"><o:p></o:p></s=
pan></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; type yang:dotted-quad;</span><span style=3D"color:black"><o:p=
></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; description</span><span style=3D"color:black"><o:p></o:p></sp=
an></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; &nbsp; &quot;Neighbor's Designated Router (DR) router ID.&quo=
t;;</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; }</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; leaf dr-ip-address {</span><span style=3D"color:black"><o:p></o:p></=
span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; type inet:ip-address;</span><span style=3D"color:black"><o:p>=
</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; &nbsp; description &quot;Neighbor's Designated Router (DR) IP addres=
s.&quot;;</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
&nbsp; }</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp; =
}</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">If one =
need the DR's interface ID in the OSPFv3 case, it could be found by locatin=
g the neighbor entry for the DR and get the interface ID (To be added) fiel=
d there.</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Comment=
s welcome.</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Thanks,=
</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">- Derek=
</span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From: </span></b><spa=
n style=3D"color:black">Alan Davey &lt;</span><a href=3D"mailto:Alan.Davey@=
metaswitch.com">Alan.Davey@metaswitch.com</a><span style=3D"color:black">&g=
t;<br>
<b>Date: </b>Tuesday, December 15, 2015 8:23 AM<br>
<b>To: </b>&quot;</span><a href=3D"mailto:draft-ietf-ospf-yang@ietf.org">dr=
aft-ietf-ospf-yang@ietf.org</a><span style=3D"color:black">&quot; &lt;</spa=
n><a href=3D"mailto:draft-ietf-ospf-yang@ietf.org">draft-ietf-ospf-yang@iet=
f.org</a><span style=3D"color:black">&gt;<br>
<b>Cc: </b>&quot;</span><a href=3D"mailto:ospf@ietf.org">ospf@ietf.org</a><=
span style=3D"color:black">&quot; &lt;</span><a href=3D"mailto:ospf@ietf.or=
g">ospf@ietf.org</a><span style=3D"color:black">&gt;<br>
<b>Subject: </b>draft-ietf-ospf-yang-03 questions and doubts<o:p></o:p></sp=
an></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">&nbsp;<=
/span><span style=3D"color:black"><o:p></o:p></span></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"color:black">Folks<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"color:black">&nbsp;<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"color:black">I have a doubt about dra=
ft-ietf-ospf-yang-03.&nbsp; Please let me know your thoughts on the followi=
ng.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black">&nbsp;<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"color:black">The text is OSPFv2-speci=
fic in places.&nbsp; I think that it would be better to define separate top=
-level groupings and containers for OSPFv2 and OSPFv3 and define common gro=
upings and containers, where possible, that
 are used by both.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black">&nbsp;<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"color:black">For example, grouping in=
terface-operation contains the following, which is incorrect for OSPFv3.<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:black">&nbsp;<o:p></o:p></span>=
</p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l1 leve=
l1 lfo6"><![if !supportLists]><span style=3D"color:black"><span style=3D"ms=
o-list:Ignore">-<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">leaf dr with typ=
e ipv4-address<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l1 leve=
l1 lfo6"><![if !supportLists]><span style=3D"color:black"><span style=3D"ms=
o-list:Ignore">-<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">leaf bdr with ty=
pe ipv4-address.<o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black;mso-fare=
ast-language:EN-GB">&nbsp;</span><span style=3D"color:black"><o:p></o:p></s=
pan></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"color:black">I think that it would be=
 better to define something along the following lines.<o:p></o:p></span></p=
>
<p class=3D"MsoNormal"><span style=3D"color:black">&nbsp;<o:p></o:p></span>=
</p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l1 leve=
l1 lfo6"><![if !supportLists]><span style=3D"color:black"><span style=3D"ms=
o-list:Ignore">-<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">ospfv3-interface=
-operation {<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l1 level2 lfo6">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">uses interface-c=
onfig<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l1 level2 lfo6">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">uses ospf-common=
-interface-operation<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l1 level2 lfo6">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">leaf dr {<o:p></=
o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:108.0pt;text-indent:-18.=
0pt;mso-list:l1 level3 lfo6">
<![if !supportLists]><span style=3D"font-family:Wingdings;color:black"><spa=
n style=3D"mso-list:Ignore">&sect;<span style=3D"font:7.0pt &quot;Times New=
 Roman&quot;">&nbsp;
</span></span></span><![endif]><span style=3D"color:black">type if:interfac=
e-ref<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:108.0pt;text-indent:-18.=
0pt;mso-list:l1 level3 lfo6">
<![if !supportLists]><span style=3D"font-family:Wingdings;color:black"><spa=
n style=3D"mso-list:Ignore">&sect;<span style=3D"font:7.0pt &quot;Times New=
 Roman&quot;">&nbsp;
</span></span></span><![endif]><span style=3D"color:black">description: <o:=
p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:144.0pt;text-indent:-18.=
0pt;mso-list:l1 level4 lfo6">
<![if !supportLists]><span style=3D"font-family:Symbol;color:black"><span s=
tyle=3D"mso-list:Ignore">&middot;<span style=3D"font:7.0pt &quot;Times New =
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;The remote interface ID u=
sed by the Designated Router on<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:144.0pt;text-indent:-18.=
0pt;mso-list:l1 level4 lfo6">
<![if !supportLists]><span style=3D"font-family:Symbol;color:black"><span s=
tyle=3D"mso-list:Ignore">&middot;<span style=3D"font:7.0pt &quot;Times New =
Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this link.&nbsp; This is the in=
terface index of the interface local to the DR.&quot;;<o:p></o:p></span></p=
>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l1 level2 lfo6">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">etc<o:p></o:p></=
span></p>
<p class=3D"MsoListParagraph" style=3D"text-indent:-18.0pt;mso-list:l1 leve=
l1 lfo6"><![if !supportLists]><span style=3D"color:black"><span style=3D"ms=
o-list:Ignore">-<span style=3D"font:7.0pt &quot;Times New Roman&quot;">&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">ospfv2-interface=
-operation {<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l1 level2 lfo6">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">uses interface-c=
onfig<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l1 level2 lfo6">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">uses ospf-common=
-interface-operation<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l1 level2 lfo6">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">leaf dr {<o:p></=
o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:108.0pt;text-indent:-18.=
0pt;mso-list:l1 level3 lfo6">
<![if !supportLists]><span style=3D"font-family:Wingdings;color:black"><spa=
n style=3D"mso-list:Ignore">&sect;<span style=3D"font:7.0pt &quot;Times New=
 Roman&quot;">&nbsp;
</span></span></span><![endif]><span style=3D"color:black">&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;type inet:ipv4-address;<o:p></o:p></s=
pan></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:108.0pt;text-indent:-18.=
0pt;mso-list:l1 level3 lfo6">
<![if !supportLists]><span style=3D"font-family:Wingdings;color:black"><spa=
n style=3D"mso-list:Ignore">&sect;<span style=3D"font:7.0pt &quot;Times New=
 Roman&quot;">&nbsp;
</span></span></span><![endif]><span style=3D"color:black">&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;description &quot;Designated Router (=
DR) IP address.&quot;;<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:72.0pt;text-indent:-18.0=
pt;mso-list:l1 level2 lfo6">
<![if !supportLists]><span style=3D"font-family:&quot;Courier New&quot;;col=
or:black"><span style=3D"mso-list:Ignore">o<span style=3D"font:7.0pt &quot;=
Times New Roman&quot;">&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"color:black">etc.<o:p></o:p><=
/span></p>
<p class=3D"MsoNormal"><span style=3D"color:black">&nbsp;<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"color:black">Regards<o:p></o:p></span=
></p>
<p class=3D"MsoNormal"><span style=3D"color:black">Alan Davey<o:p></o:p></s=
pan></p>
<p class=3D"MsoNormal"><span style=3D"color:black">&nbsp;<o:p></o:p></span>=
</p>
</div>
</div>
</div>
</div>
</div>
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From: David Allan I <david.i.allan@ericsson.com>
To: "pim@ietf.org" <pim@ietf.org>, "spring@ietf.org" <spring@ietf.org>, "isis-wg@ietf.org list (isis-wg@ietf.org)" <isis-wg@ietf.org>, "ospf@ietf.org" <ospf@ietf.org>
Thread-Topic: Computed multicast for SPRING
Thread-Index: AdHNYvY29SUhPXzFRJC1ciwPb7brLA==
Date: Thu, 23 Jun 2016 15:34:20 +0000
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Subject: [OSPF] Computed multicast for SPRING
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Hi PIM, SPRING, OSPF, ISIS

FYI, We've posted an update to the framework draft, as well as OSPF and ISI=
S drafts. This documents the approach and changes required to implement mul=
ticast as a hybrid of unicast tunnels and replication points in a SPRING-MP=
LS network. In this approach the multicast trees and the resulting FIB  are=
 derived entirely from information in the IGP.

At this point, this constitutes a complete proposal that can be critiqued i=
n its entirety. We'd welcome folks to read it though and welcome comments a=
nd questions...

The drafts of interest are:
https://datatracker.ietf.org/doc/draft-allan-spring-mpls-multicast-framewor=
k/
https://datatracker.ietf.org/doc/draft-allan-isis-spring-multicast/
https://datatracker.ietf.org/doc/draft-allan-ospf-spring-multicast/

Cheers!

--_000_E6C17D2345AC7A45B7D054D407AA205C4BD26118eusaamb105erics_
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<p class=3D"MsoNormal">Hi PIM, SPRING, OSPF, ISIS<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">FYI, We&#8217;ve posted an update to the framework d=
raft, as well as OSPF and ISIS drafts. This documents the approach and chan=
ges required to implement multicast as a hybrid of unicast tunnels and repl=
ication points in a SPRING-MPLS network.
 In this approach the multicast trees and the resulting FIB &nbsp;are deriv=
ed entirely from information in the IGP.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">At this point, this constitutes a complete proposal =
that can be critiqued in its entirety. We&#8217;d welcome folks to read it =
though and welcome comments and questions&#8230;<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">The drafts of interest are:<o:p></o:p></p>
<p class=3D"MsoNormal"><a href=3D"https://datatracker.ietf.org/doc/draft-al=
lan-spring-mpls-multicast-framework/">https://datatracker.ietf.org/doc/draf=
t-allan-spring-mpls-multicast-framework/</a>
<o:p></o:p></p>
<p class=3D"MsoNormal"><a href=3D"https://datatracker.ietf.org/doc/draft-al=
lan-isis-spring-multicast/">https://datatracker.ietf.org/doc/draft-allan-is=
is-spring-multicast/</a><o:p></o:p></p>
<p class=3D"MsoNormal"><a href=3D"https://datatracker.ietf.org/doc/draft-al=
lan-ospf-spring-multicast/">https://datatracker.ietf.org/doc/draft-allan-os=
pf-spring-multicast/</a>
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Cheers!<o:p></o:p></p>
</div>
</body>
</html>

--_000_E6C17D2345AC7A45B7D054D407AA205C4BD26118eusaamb105erics_--


From nobody Fri Jun 24 09:04:03 2016
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Subject: [OSPF] ospf - Requested session has been scheduled for IETF 96
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Dear Acee Lindem,

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

ospf Session 1 (2:00:00)
    Friday, Morning Session I 1000-1200
    Room Name: Potsdam II size: 175
    ---------------------------------------------
    


Request Information:


---------------------------------------------------------
Working Group Name: Open Shortest Path First IGP
Area Name: Routing Area
Session Requester: Acee Lindem

Number of Sessions: 1
Length of Session(s):  2 Hours
Number of Attendees: 50
Conflicts to Avoid: 
 First Priority: idr bess isis rtgwg rtgarea spring bier pim netmod
 Second Priority: teas mboned



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


From nobody Fri Jun 24 23:00:25 2016
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Subject: Re: [OSPF] Working Group Last Call on IPR Update for OSPFv2 Segment Routing Extensions
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Also support as a co-author.

r.

On 20 June 2016 at 07:41:00, Acee Lindem (acee) (acee@cisco.com) wrote:

We are doing an additional last WGLC due for the IPR update for 
https://www.ietf.org/id/draft-ietf-ospf-segment-routing-extensions-08.txt 

Here are links to the previous and current IPR disclosures: 

Previous: https://datatracker.ietf.org/ipr/2401/ 
Updated: https://datatracker.ietf.org/ipr/2808/ 

Please send any comments to his list before Tuesday July 5th, 2016. 

Thanks, 
Acee 

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

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<html><head><style>body=7Bfont-family:Helvetica,Arial;font-size:13px=7D</=
style></head><body style=3D=22word-wrap: break-word; -webkit-nbsp-mode: s=
pace; -webkit-line-break: after-white-space;=22><div id=3D=22bloop=5Fcust=
omfont=22 style=3D=22font-family:Helvetica,Arial;font-size:13px; color: r=
gba(0,0,0,1.0); margin: 0px; line-height: auto;=22>Also support as a co-a=
uthor.</div><div id=3D=22bloop=5Fcustomfont=22 style=3D=22font-family:Hel=
vetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-he=
ight: auto;=22><br></div><div id=3D=22bloop=5Fcustomfont=22 style=3D=22fo=
nt-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin:=
 0px; line-height: auto;=22>r.</div> <br><p class=3D=22airmail=5Fon=22>On=
 20 June 2016 at 07:41:00, Acee Lindem (acee) (<a href=3D=22mailto:acee=40=
cisco.com=22>acee=40cisco.com</a>) wrote:</p> <blockquote type=3D=22cite=22=
 class=3D=22clean=5Fbq=22><span><div><div></div><div>We are doing an addi=
tional last WGLC due for the IPR update for
<br>https://www.ietf.org/id/draft-ietf-ospf-segment-routing-extensions-08=
.txt
<br>
<br>Here are links to the previous and current IPR disclosures:
<br>
<br>    Previous: https://datatracker.ietf.org/ipr/2401/
<br>    Updated: https://datatracker.ietf.org/ipr/2808/
<br>
<br>Please send any comments to his list before Tuesday July 5th, 2016.
<br>
<br>Thanks,
<br>Acee =20
<br>
<br>=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F
<br>OSP=46 mailing list
<br>OSP=46=40ietf.org
<br>https://www.ietf.org/mailman/listinfo/ospf
<br></div></div></span></blockquote></body></html>
--576e1def_62263fb0_11373--


From nobody Sat Jun 25 20:21:29 2016
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Subject: [OSPF] Spencer Dawkins' No Objection on draft-ietf-ospf-transition-to-ospfv3-09: (with COMMENT)
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Spencer Dawkins has entered the following ballot position for
draft-ietf-ospf-transition-to-ospfv3-09: No Objection

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email addresses included in the To and CC lines. (Feel free to cut this
introductory paragraph, however.)


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for more information about IESG DISCUSS and COMMENT positions.


The document, along with other ballot positions, can be found here:
https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/



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

This was nice work.

I did have one question - I don't think it would be a likely problem, but
is it worth pointing out that you're taking OSPFv3 payloads that might
have been sized for IPv6, and encapsulating them as IPv4 payloads that
might have a smaller MTU?

If you tell me this isn't a problem, I'll believe you, of course, but I
needed to ask :-)



From nobody Sat Jun 25 23:00:53 2016
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On 6/25/16 8:21 PM, Spencer Dawkins wrote:
> Spencer Dawkins has entered the following ballot position for
> draft-ietf-ospf-transition-to-ospfv3-09: No Objection
>=20
> When responding, please keep the subject line intact and reply to all
> email addresses included in the To and CC lines. (Feel free to cut this=

> introductory paragraph, however.)
>=20
>=20
> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.ht=
ml
> for more information about IESG DISCUSS and COMMENT positions.
>=20
>=20
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/
>=20
>=20
>=20
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>=20
> This was nice work.
>=20
> I did have one question - I don't think it would be a likely problem, b=
ut
> is it worth pointing out that you're taking OSPFv3 payloads that might
> have been sized for IPv6, and encapsulating them as IPv4 payloads that
> might have a smaller MTU?

Given that these devices have a common link mtu (otherwise they would
have trouble forming adjcency over the broadcast domain) the opfv3
payload will always be sized for the v6 network which means the ipv4
variant of the packet packet will always be 20 bytes smaller due to the
ipv6 header being 20 bytes larger then the v4 one..

> If you tell me this isn't a problem, I'll believe you, of course, but I=

> needed to ask :-)
>
>=20



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Subject: Re: [OSPF] Spencer Dawkins' No Objection on draft-ietf-ospf-transition-to-ospfv3-09: (with COMMENT)
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Date: Sun, 26 Jun 2016 06:22:43 -0500
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From: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
To: "Acee Lindem (acee)" <acee@cisco.com>
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Subject: Re: [OSPF] Spencer Dawkins' No Objection on draft-ietf-ospf-transition-to-ospfv3-09: (with COMMENT)
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Hi, Joel and Acee,

On Jun 26, 2016 06:15, "Acee Lindem (acee)" <acee@cisco.com> wrote:
>
>
>
> On 6/26/16, 2:00 AM, "joel jaeggli" <joelja@bogus.com> wrote:
>
> >On 6/25/16 8:21 PM, Spencer Dawkins wrote:
> >> Spencer Dawkins has entered the following ballot position for
> >> draft-ietf-ospf-transition-to-ospfv3-09: No Objection
> >>
> >> When responding, please keep the subject line intact and reply to all
> >> email addresses included in the To and CC lines. (Feel free to cut this
> >> introductory paragraph, however.)
> >>
> >>
> >> Please refer to
> >>https://www.ietf.org/iesg/statement/discuss-criteria.html
> >> for more information about IESG DISCUSS and COMMENT positions.
> >>
> >>
> >> The document, along with other ballot positions, can be found here:
> >> https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/
> >>
> >>
> >>
> >> ----------------------------------------------------------------------
> >> COMMENT:
> >> ----------------------------------------------------------------------
> >>
> >> This was nice work.
> >>
> >> I did have one question - I don't think it would be a likely problem,
> >>but
> >> is it worth pointing out that you're taking OSPFv3 payloads that might
> >> have been sized for IPv6, and encapsulating them as IPv4 payloads that
> >> might have a smaller MTU?
> >
> >Given that these devices have a common link mtu (otherwise they would
> >have trouble forming adjcency over the broadcast domain) the opfv3
> >payload will always be sized for the v6 network which means the ipv4
> >variant of the packet packet will always be 20 bytes smaller due to the
> >ipv6 header being 20 bytes larger then the v4 one..
>
> Agreed. Additionally, if necessary, OSPFv3 can avail IP fragmentation and
> reassembly.

Thanks for the quick responses!

The authors might consider making that assumption explicit, but this was a
comment, not a Discuss, so just do the right thing, whatever that is :-)

Spencer

> Thanks,
> Acee
> >
> >> If you tell me this isn't a problem, I'll believe you, of course, but I
> >> needed to ask :-)
> >>
> >>
> >
> >
>

--001a114146125f39a405362c9ffe
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<p dir="ltr">Hi, Joel and Acee,</p>
<p dir="ltr">On Jun 26, 2016 06:15, &quot;Acee Lindem (acee)&quot; &lt;<a href="mailto:acee@cisco.com">acee@cisco.com</a>&gt; wrote:<br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt; On 6/26/16, 2:00 AM, &quot;joel jaeggli&quot; &lt;<a href="mailto:joelja@bogus.com">joelja@bogus.com</a>&gt; wrote:<br>
&gt;<br>
&gt; &gt;On 6/25/16 8:21 PM, Spencer Dawkins wrote:<br>
&gt; &gt;&gt; Spencer Dawkins has entered the following ballot position for<br>
&gt; &gt;&gt; draft-ietf-ospf-transition-to-ospfv3-09: No Objection<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; When responding, please keep the subject line intact and reply to all<br>
&gt; &gt;&gt; email addresses included in the To and CC lines. (Feel free to cut this<br>
&gt; &gt;&gt; introductory paragraph, however.)<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; Please refer to<br>
&gt; &gt;&gt;<a href="https://www.ietf.org/iesg/statement/discuss-criteria.html">https://www.ietf.org/iesg/statement/discuss-criteria.html</a><br>
&gt; &gt;&gt; for more information about IESG DISCUSS and COMMENT positions.<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; The document, along with other ballot positions, can be found here:<br>
&gt; &gt;&gt; <a href="https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/">https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/</a><br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; ----------------------------------------------------------------------<br>
&gt; &gt;&gt; COMMENT:<br>
&gt; &gt;&gt; ----------------------------------------------------------------------<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; This was nice work.<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt; I did have one question - I don&#39;t think it would be a likely problem,<br>
&gt; &gt;&gt;but<br>
&gt; &gt;&gt; is it worth pointing out that you&#39;re taking OSPFv3 payloads that might<br>
&gt; &gt;&gt; have been sized for IPv6, and encapsulating them as IPv4 payloads that<br>
&gt; &gt;&gt; might have a smaller MTU?<br>
&gt; &gt;<br>
&gt; &gt;Given that these devices have a common link mtu (otherwise they would<br>
&gt; &gt;have trouble forming adjcency over the broadcast domain) the opfv3<br>
&gt; &gt;payload will always be sized for the v6 network which means the ipv4<br>
&gt; &gt;variant of the packet packet will always be 20 bytes smaller due to the<br>
&gt; &gt;ipv6 header being 20 bytes larger then the v4 one..<br>
&gt;<br>
&gt; Agreed. Additionally, if necessary, OSPFv3 can avail IP fragmentation and<br>
&gt; reassembly.</p>
<p dir="ltr">Thanks for the quick responses!</p>
<p dir="ltr">The authors might consider making that assumption explicit, but this was a comment, not a Discuss, so just do the right thing, whatever that is :-)</p>
<p dir="ltr">Spencer</p>
<p dir="ltr">&gt; Thanks,<br>
&gt; Acee<br>
&gt; &gt;<br>
&gt; &gt;&gt; If you tell me this isn&#39;t a problem, I&#39;ll believe you, of course, but I<br>
&gt; &gt;&gt; needed to ask :-)<br>
&gt; &gt;&gt;<br>
&gt; &gt;&gt;<br>
&gt; &gt;<br>
&gt; &gt;<br>
&gt;<br>
</p>

--001a114146125f39a405362c9ffe--


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From nobody Tue Jun 28 03:20:35 2016
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Mirja Kühlewind has entered the following ballot position for
draft-ietf-ospf-transition-to-ospfv3-09: No Objection

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

Nit: „Further work such as [ipsecospf] would be required to support IPsec
protection for OSPFv3 over IPv4 transport.“ -> I guess that should mean
OSPFv2 here...?



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Date: Tue, 28 Jun 2016 11:58:15 +0000
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From nobody Tue Jun 28 16:37:35 2016
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Subject: [OSPF] I-D Action: draft-ietf-ospf-ttz-04.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Open Shortest Path First IGP of the IETF.

        Title           : OSPF Topology-Transparent Zone
        Authors         : Huaimo Chen
                          Renwei Li
                          Alvaro Retana
                          Yi Yang
                          Vic Liu
                          Mehmet Toy
	Filename        : draft-ietf-ospf-ttz-04.txt
	Pages           : 26
	Date            : 2016-06-28

Abstract:
   This document presents a topology-transparent zone in an OSPF area.
   A topology-transparent zone comprises a group of routers and a number
   of links connecting these routers.  Any router outside of the zone is
   not aware of the zone.  The information about the links and routers
   such as a link down inside the zone is not advertised to any router
   outside of the zone.


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

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-ospf-ttz-04

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ospf-ttz-04


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From nobody Tue Jun 28 18:13:58 2016
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Subject: [OSPF] I-D Action: draft-ietf-ospf-transition-to-ospfv3-10.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 Open Shortest Path First IGP of the IETF.

        Title           : OSPFv3 over IPv4 for IPv6 Transition
        Authors         : I. Chen
                          A. Lindem
                          R. Atkinson
	Filename        : draft-ietf-ospf-transition-to-ospfv3-10.txt
	Pages           : 10
	Date            : 2016-06-28

Abstract:
   This document defines a mechanism to use IPv4 to transport OSPFv3
   packets.  Using OSPFv3 over IPv4 with the existing OSPFv3 Address
   Family extension can simplify transition from an OSPFv2 IPv4-only
   routing domain to an OSPFv3 dual-stack routing domain.  This document
   updates RFC 5838 to support virtual links in the IPv4 unicast address
   family when using OSPFv3 over IPv4.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-ospf-transition-to-ospfv3-10

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https://www.ietf.org/rfcdiff?url2=draft-ietf-ospf-transition-to-ospfv3-10


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:
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From nobody Tue Jun 28 18:14:15 2016
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From: Huaimo Chen <huaimo.chen@huawei.com>
To: Christian Hopps <chopps@chopps.org>, "rtg-ads@ietf.org" <rtg-ads@ietf.org>
Thread-Topic: RtgDir review: draft-ietf-ospf-ttz-03
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From nobody Tue Jun 28 20:41:24 2016
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----------------------------------------------------------------------
DISCUSS:
----------------------------------------------------------------------

I do think this is a good mechanism to transition from IPv4-only OSPFv2
to dual-stack capable OSPFv3 and I intend to switch to a Yes once my
discuss points are addressed. 

* The calculation for the checksum field in the OSPFv3 packet is not
specified in this document. The RFC5340 checksum calculation uses the
IPv6 pseudo-header mechanism for upper layer checksums as specified in
Section 8.1 of RFC2460. Since that obviously won't work here (as there
are no source and dest IPv6 addresses) some different mechanism needs to
be specified here.
* (based on the above) Why doesn't this document update RFC5340?


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

I do have one question that I am curious about. Can this mechanism be run
alongside OSPFv2 on the same router? If so, how does the demultiplexing
take place to dispatch the packet to either the OSPFv2 or the
OSPFv3-over-IPv4 implementation (as the endpoints are potentially the
same and the IP proto number 89 is usually dispatched to OSPFv2)? Does it
require inserting some sort of shim in the OSPFv2 implementation to
further dispatch on the version number octet?



From nobody Wed Jun 29 06:06:22 2016
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------



section 4: Just checking that I've gotten this right. Is the
following correct? 

If RFC7166 is being used then there is never a need to modify
packets in a way that would break the authentication. In other
words, am I correct that this draft doesn't envisage any middlebox
changing an OSPF packet in between the source (of authentication)
and destination(s)? 

If that is correct, then we're good. 

If that is not correct, then I think more needs to be said in
section 4, as it is not at all clear to me how a source could emit a
packet that a middlebox could modify, without having to share the
symmetric secret used for RFC7166 authentication with that
middlebox, which would be fairly clearly undesirable.



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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Stephen Farrell <stephen.farrell@cs.tcd.ie>, The IESG <iesg@ietf.org>
Thread-Topic: [OSPF] Stephen Farrell's No Objection on draft-ietf-ospf-transition-to-ospfv3-10: (with COMMENT)
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Date: Wed, 29 Jun 2016 14:11:40 +0000
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Subject: Re: [OSPF] Stephen Farrell's No Objection on draft-ietf-ospf-transition-to-ospfv3-10: (with COMMENT)
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From nobody Wed Jun 29 07:26:03 2016
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From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Subject: Re: [OSPF] Stephen Farrell's No Objection on draft-ietf-ospf-transition-to-ospfv3-10: (with COMMENT)
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On 29/06/16 15:11, Acee Lindem (acee) wrote:
> I think it would be undesirable for a middlebox to modify OSPF packets
> under any circumstances. I see no requirement for this and, if there we=
re,
> transport of OSPFv3 over IPv4 doesn=E2=80=99t expand or contract the ty=
pes of
> modifications that a middle box could perform without breaking RFC 7166=
=2E
> For both IPv4 and IPv6 transport, the source address is included in the=

> authentication digest calculation and cannot be modified.

Lovely!

Thanks,
S.


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From nobody Wed Jun 29 08:10:30 2016
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From: Suresh Krishnan <suresh.krishnan@ericsson.com>
To: "Acee Lindem (acee)" <acee@cisco.com>, The IESG <iesg@ietf.org>
Thread-Topic: Suresh Krishnan's Discuss on draft-ietf-ospf-transition-to-ospfv3-10: (with DISCUSS and COMMENT)
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Subject: Re: [OSPF] Suresh Krishnan's Discuss on draft-ietf-ospf-transition-to-ospfv3-10: (with DISCUSS and COMMENT)
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Hi Acee,=0A=
   Thanks for the quick turanround. All your proposed changes look good to =
=0A=
me. I will clear as soon as a new version posts. We can probably discuss th=
e =0A=
"Updates:" issue on the telechat but I do not have strong feelings about th=
is =0A=
one way or another.=0A=
=0A=
Cheers=0A=
Suresh=0A=
=0A=
On 06/29/2016 09:49 AM, Acee Lindem (acee) wrote:=0A=
> Hi Suresh,=0A=
>=0A=
> On 6/28/16, 11:41 PM, "Suresh Krishnan" <suresh.krishnan@ericsson.com>=0A=
> wrote:=0A=
>=0A=
>> Suresh Krishnan has entered the following ballot position for=0A=
>> draft-ietf-ospf-transition-to-ospfv3-10: Discuss=0A=
>>=0A=
>> When responding, please keep the subject line intact and reply to all=0A=
>> email addresses included in the To and CC lines. (Feel free to cut this=
=0A=
>> introductory paragraph, however.)=0A=
>>=0A=
>>=0A=
>> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.htm=
l=0A=
>> for more information about IESG DISCUSS and COMMENT positions.=0A=
>>=0A=
>>=0A=
>> The document, along with other ballot positions, can be found here:=0A=
>> https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/=
=0A=
>>=0A=
>>=0A=
>>=0A=
>> ----------------------------------------------------------------------=
=0A=
>> DISCUSS:=0A=
>> ----------------------------------------------------------------------=
=0A=
>>=0A=
>> I do think this is a good mechanism to transition from IPv4-only OSPFv2=
=0A=
>> to dual-stack capable OSPFv3 and I intend to switch to a Yes once my=0A=
>> discuss points are addressed.=0A=
>>=0A=
>> * The calculation for the checksum field in the OSPFv3 packet is not=0A=
>> specified in this document. The RFC5340 checksum calculation uses the=0A=
>> IPv6 pseudo-header mechanism for upper layer checksums as specified in=
=0A=
>> Section 8.1 of RFC2460. Since that obviously won't work here (as there=
=0A=
>> are no source and dest IPv6 addresses) some different mechanism needs to=
=0A=
>> be specified here.=0A=
>=0A=
> Agreed. We will add this - not sure how we missed it. Many IPv4 protocols=
=0A=
> (including OSPFv2 as described in RFC 2328) exclude the pseudo-header fro=
m=0A=
> the standard checksum calculation. Since we have it in OSPFv3 over IPv6=
=0A=
> with the RFC 2460 pseudo header, I feel we should retain it here lest we=
=0A=
> open up OSPFv3 to a documented OSPFv3 vulnerably when authentication is=
=0A=
> not used.=0A=
>=0A=
> I propose we just use a variant of the UDP pseudo header as described in=
=0A=
> RFC 768.=0A=
>=0A=
> For IPv4 transport, the pseudo-header used in the checksum calculation=0A=
> will=0A=
> contain the IPv4 source and destination addresses, the OSPFv3 protocol ID=
,=0A=
> and the OSPFv3 length from the OSPFv3 header (Appendix A.3.1 [RFC5340]).=
=0A=
> The format is similar to the UDP pseudo-header as described in [RFC768].=
=0A=
>=0A=
>=0A=
>   0                   1                   2                   3=0A=
>   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1=0A=
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=0A=
> |                       Source Address                          |=0A=
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=0A=
> |                    Destination Address                        |=0A=
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=0A=
> |     0         | Protocol (89) |     OSPFv3 Packet Length      |=0A=
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=0A=
>=0A=
>=0A=
>=0A=
>=0A=
>=0A=
>=0A=
>> * (based on the above) Why doesn't this document update RFC5340?=0A=
>=0A=
> It could. However, RFC 5340 solely describes OSPFv3 with IPv6 transport.=
=0A=
> Whether or not an enhancement that doesn=92t change an existing=0A=
> specification but augments it has always been a debate. We usually err on=
=0A=
> the side of updating. What is the IESG take on this?=0A=
>=0A=
>=0A=
>>=0A=
>>=0A=
>> ----------------------------------------------------------------------=
=0A=
>> COMMENT:=0A=
>> ----------------------------------------------------------------------=
=0A=
>>=0A=
>> I do have one question that I am curious about. Can this mechanism be ru=
n=0A=
>> alongside OSPFv2 on the same router? If so, how does the demultiplexing=
=0A=
>> take place to dispatch the packet to either the OSPFv2 or the=0A=
>> OSPFv3-over-IPv4 implementation (as the endpoints are potentially the=0A=
>> same and the IP proto number 89 is usually dispatched to OSPFv2)? Does i=
t=0A=
>> require inserting some sort of shim in the OSPFv2 implementation to=0A=
>> further dispatch on the version number octet?=0A=
>=0A=
> No shim is necessary since both OSPFv2 and OSPFv3 will check the version=
=0A=
> number in the first octet of the OSPF(v3) packet header. Commercial=0A=
> implementations normally would normally drop the packet before this stage=
=0A=
> unless one has both OSPFv2 and OSPFv3 running on the same interface.=0A=
> However, I think this should be discussed in a =93Management Consideratio=
ns=94=0A=
> section.=0A=
>=0A=
>   5.0 Management Considerations=0A=
>=0A=
>   5.1 Coexistence with OSPFv2=0A=
>=0A=
>   Since OSPFv2 [RFC2328] and OSPFv3 over IPv4 as described herein use=0A=
>   exactly the same protocol and IPv4 addresses, OSPFv2 packets may be=0A=
>   delivered to the OSPFv3 process and vice versa. When this occurs, the=
=0A=
>   mismatched protocol packets will be dropped due to validation of the=0A=
>   version in the first octet of the OSPFv2/OSPFv3 protocol header. Note=
=0A=
>   that this will not prevent the packets from being delivered to the=0A=
>   correct protocol process as standard socket implementations will=0A=
>   deliver a copy to each socket matching the selectors.=0A=
>=0A=
>   Implementations of OSPFv3 over IPv4 transport SHOULD implement=0A=
>   separate counters for a protocol mismatch and SHOULD provide=0A=
>   means to suppress the ospfIfRxBadPacket and ospfVirtIfRxBadPacket=0A=
>   SNMP notifications as described in [RFC4750] and the=0A=
>   ospfv3IfRxBadPacket and ospv3VirtIfRxBadPacket SNMP notifications=0A=
>   as described in [RFC5643] when an OSPFv2 packet is received by=0A=
>   the OSPFv3 process or vice versa.=0A=
>=0A=
> Thanks,=0A=
> Acee=0A=
>=0A=
>=0A=
>=0A=
>=0A=
>=0A=
>=0A=
>=0A=
>=0A=
>>=0A=
>>=0A=
>=0A=
>=0A=
=0A=


From nobody Wed Jun 29 11:26:59 2016
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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 Open Shortest Path First IGP of the IETF.

        Title           : OSPFv3 over IPv4 for IPv6 Transition
        Authors         : I. Chen
                          A. Lindem
                          R. Atkinson
	Filename        : draft-ietf-ospf-transition-to-ospfv3-11.txt
	Pages           : 11
	Date            : 2016-06-29

Abstract:
   This document defines a mechanism to use IPv4 to transport OSPFv3
   packets.  Using OSPFv3 over IPv4 with the existing OSPFv3 Address
   Family extension can simplify transition from an OSPFv2 IPv4-only
   routing domain to an OSPFv3 dual-stack routing domain.  This document
   updates RFC 5838 to support virtual links in the IPv4 unicast address
   family when using OSPFv3 over IPv4.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-ospf-transition-to-ospfv3-11

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-ospf-transition-to-ospfv3-11


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

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


From nobody Wed Jun 29 12:24:43 2016
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From nobody Wed Jun 29 15:11:45 2016
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

I support this document going forward.

However, in Section 4 it says:

   Consequently, an OSPFv3 packet
   transported within an IPv4 packet requires IPsec to provide
   authentication and confidentiality.  Further work such as [ipsecospf]
   would be required to support IPsec protection for OSPFv3 over IPv4
   transport.

And I had trouble understanding what you meant by this, exactly. IPsec is
required, but is not currently completely enough defined for OSPF to make
this possible? If so, I'd suggest using the words:

   Consequently, an OSPFv3 packet
   transported within an IPv4 packet requires IPsec to provide
   authentication and confidentiality.  However,  further work such as
[ipsecospf]
   would be required to support IPsec protection for OSPFv3 over IPv4
   transport.

But maybe I am misunderstanding what was meant here.



From nobody Wed Jun 29 16:13:03 2016
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

I do think this is a good mechanism to transition from IPv4-only OSPFv2
to dual-stack capable OSPFv3. Thanks for quickly addressing the issues in
my DISCUSS.



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Thanks Acee. Looks good to me. I have cleared.=0A=
=0A=
Regards=0A=
Suresh=0A=
=0A=
On 06/29/2016 03:24 PM, Acee Lindem (acee) wrote:=0A=
> Hi Suresh,=0A=
>=0A=
> We=92ve updated the draft.=0A=
>=0A=
> Thanks,=0A=
> Acee=0A=
>=0A=
> On 6/29/16, 11:10 AM, "Suresh Krishnan" <suresh.krishnan@ericsson.com>=0A=
> wrote:=0A=
>=0A=
>> Hi Acee,=0A=
>>    Thanks for the quick turanround. All your proposed changes look good=
=0A=
>> to=0A=
>> me. I will clear as soon as a new version posts. We can probably discuss=
=0A=
>> the=0A=
>> "Updates:" issue on the telechat but I do not have strong feelings about=
=0A=
>> this=0A=
>> one way or another.=0A=
>>=0A=
>> Cheers=0A=
>> Suresh=0A=
>>=0A=
>> On 06/29/2016 09:49 AM, Acee Lindem (acee) wrote:=0A=
>>> Hi Suresh,=0A=
>>>=0A=
>>> On 6/28/16, 11:41 PM, "Suresh Krishnan" <suresh.krishnan@ericsson.com>=
=0A=
>>> wrote:=0A=
>>>=0A=
>>>> Suresh Krishnan has entered the following ballot position for=0A=
>>>> draft-ietf-ospf-transition-to-ospfv3-10: Discuss=0A=
>>>>=0A=
>>>> When responding, please keep the subject line intact and reply to all=
=0A=
>>>> email addresses included in the To and CC lines. (Feel free to cut thi=
s=0A=
>>>> introductory paragraph, however.)=0A=
>>>>=0A=
>>>>=0A=
>>>> Please refer to=0A=
>>>> https://www.ietf.org/iesg/statement/discuss-criteria.html=0A=
>>>> for more information about IESG DISCUSS and COMMENT positions.=0A=
>>>>=0A=
>>>>=0A=
>>>> The document, along with other ballot positions, can be found here:=0A=
>>>> https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/=
=0A=
>>>>=0A=
>>>>=0A=
>>>>=0A=
>>>> ----------------------------------------------------------------------=
=0A=
>>>> DISCUSS:=0A=
>>>> ----------------------------------------------------------------------=
=0A=
>>>>=0A=
>>>> I do think this is a good mechanism to transition from IPv4-only OSPFv=
2=0A=
>>>> to dual-stack capable OSPFv3 and I intend to switch to a Yes once my=
=0A=
>>>> discuss points are addressed.=0A=
>>>>=0A=
>>>> * The calculation for the checksum field in the OSPFv3 packet is not=
=0A=
>>>> specified in this document. The RFC5340 checksum calculation uses the=
=0A=
>>>> IPv6 pseudo-header mechanism for upper layer checksums as specified in=
=0A=
>>>> Section 8.1 of RFC2460. Since that obviously won't work here (as there=
=0A=
>>>> are no source and dest IPv6 addresses) some different mechanism needs=
=0A=
>>>> to=0A=
>>>> be specified here.=0A=
>>>=0A=
>>> Agreed. We will add this - not sure how we missed it. Many IPv4=0A=
>>> protocols=0A=
>>> (including OSPFv2 as described in RFC 2328) exclude the pseudo-header=
=0A=
>>> from=0A=
>>> the standard checksum calculation. Since we have it in OSPFv3 over IPv6=
=0A=
>>> with the RFC 2460 pseudo header, I feel we should retain it here lest w=
e=0A=
>>> open up OSPFv3 to a documented OSPFv3 vulnerably when authentication is=
=0A=
>>> not used.=0A=
>>>=0A=
>>> I propose we just use a variant of the UDP pseudo header as described i=
n=0A=
>>> RFC 768.=0A=
>>>=0A=
>>> For IPv4 transport, the pseudo-header used in the checksum calculation=
=0A=
>>> will=0A=
>>> contain the IPv4 source and destination addresses, the OSPFv3 protocol=
=0A=
>>> ID,=0A=
>>> and the OSPFv3 length from the OSPFv3 header (Appendix A.3.1 [RFC5340])=
.=0A=
>>> The format is similar to the UDP pseudo-header as described in [RFC768]=
.=0A=
>>>=0A=
>>>=0A=
>>>    0                   1                   2                   3=0A=
>>>    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1=0A=
>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=0A=
>>> |                       Source Address                          |=0A=
>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=0A=
>>> |                    Destination Address                        |=0A=
>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=0A=
>>> |     0         | Protocol (89) |     OSPFv3 Packet Length      |=0A=
>>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>> * (based on the above) Why doesn't this document update RFC5340?=0A=
>>>=0A=
>>> It could. However, RFC 5340 solely describes OSPFv3 with IPv6 transport=
.=0A=
>>> Whether or not an enhancement that doesn=92t change an existing=0A=
>>> specification but augments it has always been a debate. We usually err=
=0A=
>>> on=0A=
>>> the side of updating. What is the IESG take on this?=0A=
>>>=0A=
>>>=0A=
>>>>=0A=
>>>>=0A=
>>>> ----------------------------------------------------------------------=
=0A=
>>>> COMMENT:=0A=
>>>> ----------------------------------------------------------------------=
=0A=
>>>>=0A=
>>>> I do have one question that I am curious about. Can this mechanism be=
=0A=
>>>> run=0A=
>>>> alongside OSPFv2 on the same router? If so, how does the demultiplexin=
g=0A=
>>>> take place to dispatch the packet to either the OSPFv2 or the=0A=
>>>> OSPFv3-over-IPv4 implementation (as the endpoints are potentially the=
=0A=
>>>> same and the IP proto number 89 is usually dispatched to OSPFv2)? Does=
=0A=
>>>> it=0A=
>>>> require inserting some sort of shim in the OSPFv2 implementation to=0A=
>>>> further dispatch on the version number octet?=0A=
>>>=0A=
>>> No shim is necessary since both OSPFv2 and OSPFv3 will check the versio=
n=0A=
>>> number in the first octet of the OSPF(v3) packet header. Commercial=0A=
>>> implementations normally would normally drop the packet before this=0A=
>>> stage=0A=
>>> unless one has both OSPFv2 and OSPFv3 running on the same interface.=0A=
>>> However, I think this should be discussed in a =93Management=0A=
>>> Considerations=94=0A=
>>> section.=0A=
>>>=0A=
>>>    5.0 Management Considerations=0A=
>>>=0A=
>>>    5.1 Coexistence with OSPFv2=0A=
>>>=0A=
>>>    Since OSPFv2 [RFC2328] and OSPFv3 over IPv4 as described herein use=
=0A=
>>>    exactly the same protocol and IPv4 addresses, OSPFv2 packets may be=
=0A=
>>>    delivered to the OSPFv3 process and vice versa. When this occurs, th=
e=0A=
>>>    mismatched protocol packets will be dropped due to validation of the=
=0A=
>>>    version in the first octet of the OSPFv2/OSPFv3 protocol header. Not=
e=0A=
>>>    that this will not prevent the packets from being delivered to the=
=0A=
>>>    correct protocol process as standard socket implementations will=0A=
>>>    deliver a copy to each socket matching the selectors.=0A=
>>>=0A=
>>>    Implementations of OSPFv3 over IPv4 transport SHOULD implement=0A=
>>>    separate counters for a protocol mismatch and SHOULD provide=0A=
>>>    means to suppress the ospfIfRxBadPacket and ospfVirtIfRxBadPacket=0A=
>>>    SNMP notifications as described in [RFC4750] and the=0A=
>>>    ospfv3IfRxBadPacket and ospv3VirtIfRxBadPacket SNMP notifications=0A=
>>>    as described in [RFC5643] when an OSPFv2 packet is received by=0A=
>>>    the OSPFv3 process or vice versa.=0A=
>>>=0A=
>>> Thanks,=0A=
>>> Acee=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>=0A=
>>>>=0A=
>>>>=0A=
>>>=0A=
>>>=0A=
>>=0A=
>=0A=
>=0A=
=0A=


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To: Jari Arkko <jari.arkko@piuha.net>
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Subject: Re: [OSPF] Jari Arkko's Yes on draft-ietf-ospf-transition-to-ospfv3-11: (with COMMENT)
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Hi Jari, 

> On Jun 29, 2016, at 6:11 PM, Jari Arkko <jari.arkko@piuha.net> wrote:
> 
> Jari Arkko has entered the following ballot position for
> draft-ietf-ospf-transition-to-ospfv3-11: Yes
> 
> When responding, please keep the subject line intact and reply to all
> email addresses included in the To and CC lines. (Feel free to cut this
> introductory paragraph, however.)
> 
> 
> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
> for more information about IESG DISCUSS and COMMENT positions.
> 
> 
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-ospf-transition-to-ospfv3/
> 
> 
> 
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
> 
> I support this document going forward.
> 
> However, in Section 4 it says:
> 
>   Consequently, an OSPFv3 packet
>   transported within an IPv4 packet requires IPsec to provide
>   authentication and confidentiality.  Further work such as [ipsecospf]
>   would be required to support IPsec protection for OSPFv3 over IPv4
>   transport.
> 
> And I had trouble understanding what you meant by this, exactly. IPsec is
> required, but is not currently completely enough defined for OSPF to make
> this possible? If so, I'd suggest using the words:
> 
>   Consequently, an OSPFv3 packet
>   transported within an IPv4 packet requires IPsec to provide
>   authentication and confidentiality.  However,  further work such as
> [ipsecospf]
>   would be required to support IPsec protection for OSPFv3 over IPv4
>   transport.
> 
> But maybe I am misunderstanding what was meant here.

I think I see your point. How about: 

As specified in [RFC5340], OSPFv3 relies on IPsec [RFC4301] for 
authentication and confidentiality. [RFC 4552] specifies how IPsec is used
with OSPFv3 over IPv6 transport. In order to use OSPFv3 with IPv4
transport as specified herein, further work such as [ipsecospf] would
 be required. 

Thanks,
Acee 




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


From nobody Thu Jun 30 00:52:08 2016
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Subject: Re: [OSPF] Jari Arkko's Yes on draft-ietf-ospf-transition-to-ospfv3-11: (with COMMENT)
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> I think I see your point. How about:
> 
> As specified in [RFC5340], OSPFv3 relies on IPsec [RFC4301] for
> authentication and confidentiality. [RFC 4552] specifies how IPsec is used
> with OSPFv3 over IPv6 transport. In order to use OSPFv3 with IPv4
> transport as specified herein, further work such as [ipsecospf] would
> be required.

That would be clear. Thanks.

Jari


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Shraddha Hegde <shraddha@juniper.net>, "draft-ietf-ospf-link-overload@ietf.org" <draft-ietf-ospf-link-overload@ietf.org>
Thread-Topic: [OSPF] "OSPF Link Overhead" - draft-ietf-ospf-link-overload-01
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