Re: [Idr] I-D Action: draft-ietf-idr-deprecate-as-set-confed-set-02.txt

Ondrej Zajicek <santiago@crfreenet.org> Mon, 04 November 2019 21:27 UTC

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Date: Mon, 4 Nov 2019 22:27:52 +0100
From: Ondrej Zajicek <santiago@crfreenet.org>
To: Job Snijders <job@ntt.net>
Cc: idr@ietf.org, claudio@openbsd.org
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Subject: Re: [Idr] I-D Action: draft-ietf-idr-deprecate-as-set-confed-set-02.txt
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On Mon, Nov 04, 2019 at 03:31:58AM +0000, Job Snijders wrote:
> Dear all,
> 
> It appears we now could use some running code that treats AS_SET and
> AS_CONFED_SET as withdraw, or at least provides a
> button/flag/knob/policy language hook to make it so!

Hi

Just added a patch [*] to BIRD to optionally reject AS_SETs (and AS_CONFED_SETs).

One thing that is not discussed in the draft is handling of AS_SETs in AS4_PATH.
It would make sense to also do treat-as-withdraw, but handling of inappropriate
AS_CONFED_* segments is already different in AS_PATH and AS4_PATH.

[*] https://gitlab.labs.nic.cz/labs/bird/commit/a52476c9be41e8d33e4a22e3dc733240ce791b42

-- 
Ondrej 'Santiago' Zajicek (email: santiago@crfreenet.org)