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 <[e-mail]>]

Miya:

Thank you for your feedback!   You provide an interesting comment on the origins of the each technology.

Would you post a message to  Part 1 of the CAR/CT Adoption call answering the questions?

[Idr] Part 1 of CAR/CT Adoption call (7/6 to 7/20) - Informational Questions (ietf.org)<https://mailarchive.ietf.org/arch/msg/idr/FhoK04HsSy9tR7ioV7AD0Vv6Ir4/>
(https://mailarchive.ietf.org/arch/msg/idr/FhoK04HsSy9tR7ioV7AD0Vv6Ir4/)

Also, I’d love to hear about any customer use cases you deal with.

Cheers, Sue

From: Miya Kohno <[e-mail]>
Sent: Friday, July 15, 2022 10:43 AM
To: Susan Hares <[e-mail]>
Cc: [e-mail]
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

Dear Sue, I support the adoption of BGP-CAR. > 1. Do you agree or disagree that these two drafts are functionally identical? Basically yes. But I would say they have different origins. BGP-CT is MP
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Dear Sue,

I support the adoption of BGP-CAR.

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

Basically yes. But I would say they have different origins. BGP-CT is MPLS-native, whereas BGP-CAR is SR-native.
From the SR/SRv6 operation point of view, CAR is simpler, more scalable/extensible and more consistent with SR Policy.  BGP-CT's indirection and the need for the Mapping Community seems unnecessarily complex.

> 2. If you agree, should we have just one draft or do the operational difference encourage us to have two drafts?

One draft is preferable. And BGP-CAR is a more natural extension, especially for SR/SRv6, which is characterized by simplicity.

> 3. If you disagree, do the functional differences encourage us to have one or two drafts adopted?

Thanks,
Miya

On Thu, Jul 7, 2022 at 3:17 AM Susan Hares <[e-mail]<mailto:[e-mail]>> wrote:
This begins a 2-week WG Adoption call (7/6/2022 to 7/20/2022) for the following drafts:

  *   draft-dskc-bess-bgp-car-05.txt

(https://datatracker.ietf.org/doc/draft-dskc-bess-bgp-car/<https://shared.outlook.inky.com/link?domain=datatracker.ietf.org&t=h.eJxFzDsSgyAUheGtONQR5EZQrNzK5aE4qDhAiiSTvSdUac9_5nuTR9rJ1BBfypUnxiwWLAlNcIluriw0ppXZaJhNuJTW5mBa7XJu9Xq1BhMjt4aEKpyu_L68E6NUHFj2mFyeT_vy1MSDCS4AQANIscBw5ziqUfMBoO-1s6JjXIphVJKrnsq-qq6qx_ZEGqI_47weuO3VqtHW-F8-XytuPRU.MEUCIGxh5rqzM27fl7P14cdaD5UORkEpQnL5n7voxo6Fht9HAiEAlo-d4j66aLVEFbEZR4uqkCMN_ilXAyqt1JOuU0sKJlM>)

  *   draft-kaliraj-idr-bgp-classful-transport-planes-17.txt

(https://datatracker.ietf.org/doc/draft-kaliraj-idr-bgp-classful-transport-planes/<https://shared.outlook.inky.com/link?domain=datatracker.ietf.org&t=h.eJxFzEsSwiAQRdGtWIwFpA3kM3IrnUASDIFUgwO13LsycvpuvfNmDwpsOLG1lCMPUlosWAinzZHwrswi0SJtmqQlnAvfMHjCO_eW-LgcfAqY8_wI_PeJ-UhU-BEwuizZ-cS2KkdXfoa66M70CmRekVy-RftaxZR2qZUGgBHA6Bnaq8Ku70bVAjTN6Ky-SGV02_VG9Y0wTVVdVXf_RLGlNabbsqMP1arR1vhfPl8BaEbR.MEYCIQCN8BBQ2-jbOT7XmKRvQvnPSEVXYQ9ZffPMQZRegCsBzQIhALySmStT2ieggwX8LAOYDu2w7-Wc29YNP-Rd9VMwRYgz>)
The associated drafts may be useful in your consideration.
CAR:

  *   draft-ietf-spring-segment-routing-policy-22

https://datatracker.ietf.org/doc/<https://shared.outlook.inky.com/link?domain=datatracker.ietf.org&t=h.eJxFjMsOwiAQAH_FcDZsdwUKPfVXtoWWpg8MxYMa_105eZ2ZzFs88ia6i4il3M8OwHPhknlcQ5ZLKJNMeQafRhDXi1hreYTyY9hoaxwSnJFzOPvDv6Ic0w4aNRENREZP1N6QrbMDtkRKDcHrBtDo1jqDTkmj6jXU6748Wa4pHqmfd162-qrSV_knny_BXTRg.MEUCIEFJ5ZKpTJByRi2b_Sv3Y-lCKQrNJVzA3XcF8k3rZAHUAiEAnE_CyrNGXeMGaakBcHMWvzEZiMNmO4nJj7oRpVh_wag> draft-ietf-spring-segment-routing-policy/



  *   draft-ietf-idr-segment-routing-te-policy-18

https://datatracker.ietf.org/doc/<https://shared.outlook.inky.com/link?domain=datatracker.ietf.org&t=h.eJxFjMsOwiAQAH_FcDZsdwUKPfVXtoWWpg8MxYMa_105eZ2ZzFs88ia6i4il3M8OwHPhknlcQ5ZLKJNMeQafRhDXi1hreYTyY9hoaxwSnJFzOPvDv6Ic0w4aNRENREZP1N6QrbMDtkRKDcHrBtDo1jqDTkmj6jXU6748Wa4pHqmfd162-qrSV_knny_BXTRg.MEUCIEFJ5ZKpTJByRi2b_Sv3Y-lCKQrNJVzA3XcF8k3rZAHUAiEAnE_CyrNGXeMGaakBcHMWvzEZiMNmO4nJj7oRpVh_wag> draft-ietf-idr-segment-routing-te-policy/



  *   draft-dskc-bess-bgp-car-problem-statement-05.txt

https://datatracker.ietf.org/doc/draft-dskc-bess-bgp-car-problem-statement/<https://shared.outlook.inky.com/link?domain=datatracker.ietf.org&t=h.eJxFzEsSwiAQRdGtWIwFQhtI4sitNND5VEJIAQ7Ucu-GkdN3650Pe6aN3S9sLuXIdyk9FiwJ3UpJLFRGEdMkfXTSJxwL93l13FLO3E4Hd5j4kaLdKPB8_ijQXiS7XthazZ3K-VaN7s2gQOYZE-XH7t-zcDFIrTQAWACjR-huCvuht6oDaFtLXjdSGd31g1FDK0xbVapqWF4o1jjv8TEFXLZq1ehr_C_fH9kbRDU.MEQCIGbaIv00FXuXT9u7zRen5aOlA48TO7EJo4X1pC_XMhnKAiBsMyt7mgUtuzQdjoK5t5V1_1Zq9c5e3_Et1z4vqQHjSg>
CT

  *   draft-hegde-spring-mpls-seamless-sr-06.txt

https://datatracker.ietf.org/doc/draft-hegde-spring-mpls-seamless-sr/<https://shared.outlook.inky.com/link?domain=datatracker.ietf.org&t=h.eJxFzEEOgyAUBNCrNKwryK-guPIqX_mKUcQAXbRN715ZdTeZybwPe8ad9Tfmcj5TL4TFjDnitFHkK-WZh7gIGyZhI865crRYqtIZ12Op_LmnKhH6ndIVomD3G9uKdlC-frJWnTYSRHIYKQ2HfTs-BS-UVAAwAmg1Q_uQ2JlulC1A04xkVS2kVm1ntDQN101Rqah-fSHfgjvCsHhc92KV0Zbx33x_C15CDw.MEQCIDNW8d0L3mygmgQkOZMsjw2jJOjTPYWihxjUX5vgQRBiAiAt1tEaGpaOyKguOmIvutqFzu3mTND6jPbpF_QItiNk_A>



  *   draft-kaliraj-idr-multinexthop-attribute-02.txt

(https://datatracker.ietf.org/doc/draft-kaliraj-idr-multinexthop-attribute/<https://shared.outlook.inky.com/link?domain=datatracker.ietf.org&t=h.eJxFzMsOgyAQheFXaVhXkKmgdtVXGQWFesGMY9JL-u4tq27Pn_O9xUGzuJ5EYN72q1IOGZmwnzzJ6HmQiUblUq8c4cDFhHMkvBfRUbEcM8fVPzikrUBmit3BXonzSUyZXD3_zro0jW01qD0g-f22uleQfVqU0QYAOgBrBqgvGpu26XQNUFWdd6ZU2pq6aa1uK2mrrPqsLvGJckphTbdxwThnK0eX43_5fAHqdER2.MEQCIFP_7f9WI1jAxENJNXB5KFMQlVzoJTht-yOm7iSPPk7nAiAwXYd42IKMlIP0lhRTgsE6CIHtffEoU8xWsheipKwEow>)



  *   draft-kaliraj-bess-bgp-sig-private-mpls-labels-04

(https://datatracker.ietf.org/doc/draft-kaliraj-bess-bgp-sig-private-mpls-labels/<https://shared.outlook.inky.com/link?domain=datatracker.ietf.org&t=h.eJxFzEEOwiAQQNGrGNYCMhbauvIqQ5m2WFoaQBM13l1Zuf0_eW92T4FdDmwuZc8XKR0WLAmHhZLwVEYR0yRdHKRLOBa-YPAJb9xSztxOO89-4nvyDyzE1z1kHtBSyJIdD2yp8EblR6iT7kyvQOYZE-Xr5l6zGOIqtdIAYAGMHqE9K-z6zqoWoGksOX2Syui2643qG2GaqlJVV_9EscR5i9dpRR-qVaer818-X3P4Rgw.MEYCIQDiP8U2aKqIJ0k5QCCZ0pZaz95K9WvWf8f9wwzKzLsSXQIhALJFA_GGWyuct88BjhaYdyu0DaMGyW6CxUGbgzbr-kbk>)


You may discuss adoption of one or both the main drafts (CAR or Classful-Transport (CT)) in your response, and the associate drafts.
A few caveats on your discussion:

  1.  Please do not worry whether the drafts belong in BESS or IDR.

Both BESS and IDR work on creating relevant quality standards in BGP,

and the chairs will work this out.



  1.  The IDR has spent time over 2020-2022 discussing these drafts.

For background information, see the following links below.

You can refer to these previous presentations or email discussions in your responses.



  1.  Please constrain your discussion to whether these drafts should be adopted.

I’ve started another email thread on whether path establishment/distribution

for a color (aka QOS/SLA/Transport Class) should be done via a

specific BGP route (i.e., per-color NLRI) rather than as per-color attributes on a route.
https://mailarchive.ietf.org/arch/msg/idr/FhoK04HsSy9tR7ioV7AD0Vv6Ir4/<https://shared.outlook.inky.com/link?domain=mailarchive.ietf.org&t=h.eJxFjssKwjAUBX9Fspbc5ppH40pBRHGn4D61sQm2jSSxoOK_a1ZuZzjDeZNH7MlyRlzO97QEGIzvTbw4P1nqbb7SEDsoAIbUgW8jbF04VHyXTk-dj8qHs1pvqvMk95EDmc_IreRGm39DVolaaoaQnIk2rcb25eglDCCYQMQGUYorqgUzta4bphA5b2wrKmBSqFpLpjmVvFRtqQ7-aegtuDGsunK0tIpsi_yTzxcv0EBu.MEUCIDWpLoybcfQC1Vxy4UC0_nFfc54XtkFejDranchGCehaAiEAwE8AvWEZGGOcAUgX3AbAdCK-BMLVgP61X4yk0KumLTQ>

Questions (to consider) for these drafts:
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/<https://shared.outlook.inky.com/link?domain=mailarchive.ietf.org&t=h.eJxFjssOwiAUBX_FsDbcci20dOXGx8pEjTFxR4UWUlsMVOMj_ruycjuTMzlvcgsXUk2IHcdrrAB65S4qnK27G-rM2FAfWkgA-tiC0wGMkJudlg7VKjseHstubxfNdn2Kaw9kOiFdyg1m_A1ZxkshGUK0Kpg4H_TL0rPvgTOOiDWi4A0WM6ZKWdasQMzz2mieARO8KKVgMqciT1WTqr17Ktp5O_h5m46mVpI6yT_5fAFSkEC2.MEUCIGee5fi1Tr3QbNf2YuLxw7Swhp_MflvrLzve1PPhk8L7AiEA3MkUfMeCqdGQGY4cJhq5Amw3yfgdkUsNGd9BQqchL4o>

  1.  Do you agree or disagree that these two drafts are functionally identical?
  2.  If you agree, should we have just one draft or do the operational difference encourage us to have two drafts?
  3.  If you disagree, do the functional differences encourage us to have one or two drafts adopted?


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