[bdNOG] Fwd: Route leak in Bangladesh

Faisal Hasan hasansf at gmail.com
Tue Jun 30 22:01:04 BDT 2015


Hi All,

I see a lot of discussing is going on about the BD Route link at nanog. Did
anyone respond about it from BD side?

Thanks
Faisal
---------- Forwarded message ----------
From: Graham Beneke <graham at apolix.co.za>
Date: Tue, Jun 30, 2015 at 10:45 AM
Subject: Re: Route leak in Bangladesh
To: nanog at nanog.org


On 30/06/2015 17:09, Job Snijders wrote:
> If you were the network causing a leak of this type, prefix filters on
> inbound facing your customers might not have prevented this.
>
> If you are a network providing transit to the leak originator mentioned
> in the above paragraph, I believe a prefix based filter could have made
> a big difference.

We seem to be assuming that this leak occurred within the context of a
customer-provider BGP relationship.

But what if this is not the case?

What if this was a peering session - perhaps via a route server at an
exchange point. max-pref on a session with a route server is an
extremely blunt (and potentially ineffective) tool for the job.

In some regions the use to route servers and the lack of clue about
anything BGP beyond one session to the route server (and one session to
transit) is scary. We place our faith in the IXP operator, that they
know best, while there may be no evidence that they do... ;-)

--
Graham Beneke
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