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

["David Smith (djsmith)" <[e-mail]>]

Hi Susan,

Per the WG adoption call below, I support adoption of the BGP-CAR draft and oppose the BGP-CT draft. As for your three specific questions:

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

I disagree as there are significant differences between the two. CT's use of VPN semantics for "transport" prefixes and its limited native encaps support (i.e., classic MPLS only; not SR-MPLS and SRv6) are two examples.

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

n/a

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

I recommend a single draft based on BGP-CAR.

Regards,

/dave

________________________________
From: Idr <[e-mail]> on behalf of Susan Hares <[e-mail]>
Sent: Wednesday, July 6, 2022 2:16 PM
To: [e-mail] <[e-mail]>
Subject: [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


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/)

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

(https://datatracker.ietf.org/doc/draft-kaliraj-idr-bgp-classful-transport-planes/)

The associated drafts may be useful in your consideration.

CAR:

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

https://datatracker.ietf.org/doc/ draft-ietf-spring-segment-routing-policy/



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

https://datatracker.ietf.org/doc/ 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/

CT

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

https://datatracker.ietf.org/doc/draft-hegde-spring-mpls-seamless-sr/



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

(https://datatracker.ietf.org/doc/draft-kaliraj-idr-multinexthop-attribute/)



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

(https://datatracker.ietf.org/doc/draft-kaliraj-bess-bgp-sig-private-mpls-labels/)



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/



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/

  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?