Re: [Idr] One Administrative Domain using BGP (Fwd: I-D Action: draft-uttaro-idr-bgp-oad-00.txt)

Hi Alvaro,

I have one practical question to the proposed draft.

Today a lot of implementations already support features like
next-hop-unchanged on EBGP, or AIGP attribute etc ...

Would it not be just much cleaner to enumerate explicitly those features on
today's EBGP sessions between ASNs under the same administrative domains ?

Practical aspect is that while you can define the expected behaviour of OAD
session today - but tomorrow we will likely introduce more BGP protocols
extensions which will not going to be reflected in this OAD document. So it
is going to be really hard to keep track on what sides really intend to do
when declaring on their edge OAD session type.

IMHO explicitly enabling exceptions for plane EBGP sessions will be far
more practical approach.

Cheers,
R.

On Mon, Mar 13, 2023 at 4:47 PM Alvaro Retana <alvaro.retana@futurewei.com>
wrote:

> [Individual Participant]
>
>
> Dear WG:
>
> We just published a draft [1] to propose a new BGP session type called
> EBGP-OAD.
>
> As the name suggests, it is a session between two different ASNs that
> belong to the same operator.  Many idr documents call this grouping a
> Single Administrative Domain, we're calling it One Administrative Domain
> (OAD).
>
> An EBGP-OAD session combines properties of EBGP and IBGP: it is an EBGP
> session with the ability to also announce and receivex IBGP-only or
> non-transitive attributes.
>
> I'm sure this first version needs some more work, so we would really
> appreciate comments on the list.  We have requested agenda time at IETF
> 116, but, as we all know, that may be tight.
>
> Thanks in advance!
>
>
> Alvaro.
>
>
>
> [1] https://datatracker.ietf.org/doc/html/draft-uttaro-idr-bgp-oad
>
> On March 13, 2023 at 10:38:39 AM, internet-drafts@ietf.org (
> internet-drafts@ietf.org) wrote:
>
>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>
> Title : One Administrative Domain using BGP
> Authors : Jim Uttaro
> Avinash Lingala
> Keyur Patel
> Dhananjaya Rao
> Bin Wen
> Alvaro Retana
> Srihari Sangli
> Pradosh Mohapatra
> Filename : draft-uttaro-idr-bgp-oad-00.txt
> Pages : 8
> Date : 2023-03-10
>
> Abstract:
> This document defines a new External BGP (EBGP) peering type known as
> EBGP-OAD. EBGP-OAD peering is used between two EBGP peers that
> belong to One Administrative Domain (OAD).
>
> The IETF datatracker status page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-uttaro-idr-bgp-oad/
>
> There is also an HTML version available at:
> https://www.ietf.org/archive/id/draft-uttaro-idr-bgp-oad-00.html
>
> Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts
>
>
>
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