Re: [Sidrops] Reason for Outage report (was: Re: ARIN RPKI Service Impact - 12 August 2020 - manifest issue - resolved)

"Jakob Heitz (jheitz)" <jheitz@cisco.com> Thu, 27 August 2020 17:30 UTC

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From: "Jakob Heitz (jheitz)" <jheitz@cisco.com>
To: Mikael Abrahamsson <swmike=40swm.pp.se@dmarc.ietf.org>, Martin Hoffmann <martin@opennetlabs.com>
CC: John Curran <jcurran@arin.net>, "sidrops@ietf.org" <sidrops@ietf.org>, Job Snijders <job@ntt.net>
Thread-Topic: [Sidrops] Reason for Outage report (was: Re: ARIN RPKI Service Impact - 12 August 2020 - manifest issue - resolved)
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Date: Thu, 27 Aug 2020 17:30:54 +0000
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References: <DE33EFAE-FBD2-478F-92A9-1FBD81CCC43F@arin.net> <727F6FBD-F73C-4F58-AE2D-0276B2A183A3@arin.net> <20200826160001.GF95612@bench.sobornost.net> <20200826202442.232829fc@grisu.home.partim.org> <alpine.DEB.2.20.2008271422560.11025@uplift.swm.pp.se>
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Subject: Re: [Sidrops] Reason for Outage report (was: Re: ARIN RPKI Service Impact - 12 August 2020 - manifest issue - resolved)
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-----Original Message-----
From: Mikael Abrahamsson
Sent: Thursday, August 27, 2020 5:30 AM

> If a ROA is gone, it doesn't cause an outage. It causes lack of protection.

Suppose a provider has a ROA for a large prefix and subdivides it into more specifics.
It allocates these more specifics to other ASes and those ASes publish ROAs for
those more specifics.

If the ROAs for the more specifics are gone, then the less specific ROA
for the larger prefix will invalidate announcements for the more specific prefixes.

That's an outage.

Regards,
Jakob.