[Idr] Re: BGP Origin Scrubbing (draft-marenamat-idr-scrub-bgp-origin-00)

[Robert Raszuk <[e-mail]>]

All,

First I disagree that this ORIGIN attribute has been "out of use for
years". For sure all implementations I am aware of use it.

The real question however here to answer is if deprecating it is a good
thing.

Today it seems that the main role of ORIGIN servers is to prefer routes
originated with network command from routes injected to BGP via
redistribution. Is treating them in the same way a good thing ? I am not
sure.

I am not convinced stuffing 0 there will not break some path selections (by
break meaning will result in suboptimal path selection across domain
boundaries) as compared with today.

Regards,
Robert

On Mon, Nov 3, 2025 at 11:49 PM Maria Matejka <maria.matejka=
[e-mail]> wrote:

> Hello!
>
> Moving on from James Bensley’s talk at RIPE 91, this is a proposal to
> start a deprecation process of the BGP ORIGIN attribute.
>
> Comments and suggestions appreciated.
>
> Maria
>
> On Mon, Nov 03, 2025 at 02:43:38PM -0800, [e-mail] wrote:
>
> A new version of Internet-Draft
> draft-marenamat-idr-scrub-bgp-origin-00.txt has been successfully submitted
> by Maria Matejka and posted to the IETF repository.
>
> Name:     draft-marenamat-idr-scrub-bgp-origin
> Revision: 00
> Title:    Scrubbing BGP ORIGIN Attribute
> Date:     2025-11-03
> Group:    Individual Submission
> Pages:    7
> URL:      https://www.ietf.org/archive/id/draft-marenamat-idr-scrub-bgp-origin-00.txt
> Status:   https://datatracker.ietf.org/doc/draft-marenamat-idr-scrub-bgp-origin/
> HTML:     https://www.ietf.org/archive/id/draft-marenamat-idr-scrub-bgp-origin-00.html
> HTMLized: https://datatracker.ietf.org/doc/html/draft-marenamat-idr-scrub-bgp-origin
>
> Abstract:
>
> The BGP Origin attribute in its original meaning has been out of use for
> years. Yet, the BGP Origin attribute has high priority in the best route
> selection algorithm, right after the AS Path length, and it’s being used
> inconsistently over the Internet to manipulate the route preference.
>
> This document updates RFC 4271 and RFC 7606 by making the BGP Origin
> attribute half-optional and explicitly allowing its scrubbing to zero (IGP).
>
> –
> Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.
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