nanog mailing list archives

Re: Route leak in Bangladesh


From: "Justin M. Streiner" <streiner () cluebyfour org>
Date: Tue, 30 Jun 2015 10:39:56 -0400 (EDT)

On Tue, 30 Jun 2015, Matsuzaki Yoshinobu wrote:

Randy Bush <randy () psg com> wrote
A friend in AS58587 confirmed that this was caused by a configuration
error - it seems like related to redistribution, and they already
fixed that.

7007 all over again.  do not redistribute bgp into igp.  do not
redistribute igp into bgp.

I also suggested them to implement BGP community based route filtering
in their outbound policy.  Any other suggestions or thoughts to
prevent such incidents in general?

At a minimum, AS-PATH filtering of outgoing routes to just your ASN(s) and your downstream customer ASNs. Whether this is done manually, built using AS-SETs from your route registry of choice, or through some other
automated means is another story.

jms


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