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Re: [Idr] Part 2 of CAR/CT Adoption call (7/6 to 7/20) - Adoption of draft-dskc-bess-bgp-car-05.txt and draft-kaliraj-idr-bgp-classful-transport-planes-17.txt

Susan Hares <shares@ndzh.com> Mon, 18 July 2022 14:34 UTC

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From: Susan Hares <shares@ndzh.com>
To: Robert Raszuk <robert@raszuk.net>
CC: Julian Klaiber <julian.klaiber@ost.ch>, "idr@ietf.org" <idr@ietf.org>
Thread-Topic: [Idr] Part 2 of CAR/CT Adoption call (7/6 to 7/20) - Adoption of draft-dskc-bess-bgp-car-05.txt and draft-kaliraj-idr-bgp-classful-transport-planes-17.txt
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Date: Mon, 18 Jul 2022 14:34:40 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/fv0jmCFU58szoU7VwhfTeOiaXmA>
Subject: Re: [Idr] Part 2 of CAR/CT Adoption call (7/6 to 7/20) - Adoption of draft-dskc-bess-bgp-car-05.txt and draft-kaliraj-idr-bgp-classful-transport-planes-17.txt
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Robert:

Jeff Haas was very precise in his discussion of this topic based on
2 questions he discussed with both the CAR and CT authors.

Jeff Haas (IDR Co-chair) posted a summary on March 21, 2022
that for route resolution and route origination/propagation,
BGP-CAR and BGP-CT are functionally identical, but operationally different.
    ( https://mailarchive.ietf.org/arch/msg/idr/e69NRd9i2aG0WUxFkShEfQHZsHo/

I refer you to Jeff’s email for clarity on the term “functionally identical”.

If you wish to ask Jeff questions on that mail thread, you may.
Please do not re-open discussions on the topic of functionally identical on
this mail thread. The IDR chairs allowed discussion time for topic at IETF-113.

You may raise specific issues regarding operational differences on
Part 3 of the Adoption call.   The IDR chairs are looking for in put on
operational differences between CAR and CT.

Cheerily, Sue

From: Robert Raszuk <robert@raszuk.net>
Sent: Monday, July 18, 2022 9:42 AM
To: Susan Hares <shares@ndzh.com>
Cc: Julian Klaiber <julian.klaiber@ost.ch>; idr@ietf.org
Subject: Re: [Idr] Part 2 of CAR/CT Adoption call (7/6 to 7/20) - Adoption of draft-dskc-bess-bgp-car-05.txt and draft-kaliraj-idr-bgp-classful-transport-planes-17.txt

Hello Sue, As I was not sure if I formally answered your questions I took a stub at them. And pretty much failed at #1 ...  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌  ‌
External (robert@raszuk.net<mailto:robert@raszuk.net>)
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Hello Sue,

As I was not sure if I formally answered your questions I took a stub at them. And pretty much failed at #1 ...


  1.  Do you agree or disagree that these two drafts are functionally identical?

Thinking more .. I am not really sure what you are asking here.

Is OSPF and ISIS functionally identical ? Both give you a product of SPF ... but they do it in completely different ways.

or

Is a trip from Boston to New York by plane, by train or by car functionally identical ? All of them will get you to the final destination - perhaps all will even take roughly the same total time door to door - but how can we say that are functionally identical or not ?

Many thx,
Robert



  1.  If you agree, should we have just one draft or do the operational difference encourage us to have two drafts?
  2.  If you disagree, do the functional differences encourage us to have one or two drafts adopted?
Thank you,
Susan Hares

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