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Re: [Sidrops] Call for SIDROPS WG Agenda Items

Andrei Robachevsky <andrei.robachevsky@gmail.com> Fri, 13 July 2018 09:00 UTC

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To: Tim Bruijnzeels <tim@nlnetlabs.nl>
Cc: Alexander Azimov <aa@qrator.net>, Keyur Patel <keyur@arrcus.com>, "sidrops@ietf.org" <sidrops@ietf.org>, George Michaelson <ggm@algebras.org>
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From: Andrei Robachevsky <andrei.robachevsky@gmail.com>
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Date: Fri, 13 Jul 2018 10:59:57 +0200
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Subject: Re: [Sidrops] Call for SIDROPS WG Agenda Items
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Tim Bruijnzeels wrote on 12/07/2018 10:32:
> It’s this paragraph in section 5 that threw me off a bit:
> 
>    If the output of the AS_PATH verification procedure is 'unverifiable'
>    it means that AS_PATH can't be fully verified.  Such routes should be
>    treated with caution and MAY be processed the same way as "invalid"
>    routes.
> 
> 'MAY be processed the same way as  “invalid” routes’ indicates a local choice, which is fine I believe. But, under partial deployment this can lead to routes being dropped a little too aggressively, no? Reading your comments in the email thread the advice during partial deployment would be to accept, rather than drop, right?

Yes, that is correct. A partly validated path is slightly better that
non-validated and is much better than a path contradicting with ASPAs.

Andrei

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