Re: BGP route hijack by AS10990

[Patrick Schultz <lists-nanog () schultz top>]

I'd like to direct you to Job's writeup on this :) https://mailman.nanog.org/pipermail/nanog/2017-August/191897.html
While these "optimizers" CAN be beneficial to the individual operator, they're apparently used incorrectly in some 
instances.
Telia should've filtered, that's for sure. But the leak shouldn't have occured in the first place.

Am 30.07.2020 um 20:09 schrieb Florian Brandstetter:
> Never read something that silly, bgp optimizers are perfectly fine
> and every network operator is well within the right to run optimizers,
> you should much more ask Telia as to why they accepted the prefixes,
> and EVEN MORE ask the operator of 7219 for what specific reason they
> are blowing out their full table to 1299. Anyone with a sane mind has
> export filters where a specific community or tag serves as some kind
> of "do advertise" sign, as opposed to announcing anything BUT external.
>
> May I know the specific reason for such poor attempt of shifting
> responsibility for this incident to bgp optimizers instead of those
> who clearly don't have a single clue about proper filtering policies?
>
> -- 
> Greetings,
>
> Florian Brandstetter
> Chief Executive Officer
> SquareFlow Corporation
> www.squareflow.net
>
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> On 2020-07-30 19:09, Patrick Schultz wrote:
> > so, bgp optimizers... again?
> >
> > -- 
> > Patrick
> > Am 30.07.2020 um 18:58 schrieb Töma Gavrichenkov:
> >
> > > Peace,
> > >
> > > On Thu, Jul 30, 2020, 5:48 AM Clinton Work <clinton () scripty com>
> > > wrote:
> > >
> > > > We saw a bunch of our IP blocks hijacked by AS10990 from 19:15 MDT
> > > > until 20:23 MDT.   Anybody else have problems with that.
> > >
> > > Here's what we discovered about the incident.  Hope that brings some
> > > clarity.
> > >
> > > https://radar.qrator.net/blog/as10990-routing-optimization-tale
> > >
> > > -- 
> > > Töma
> > >
> > > >