[170680] in North American Network Operators' Group
Re: BGPMON Alert Questions
daemon@ATHENA.MIT.EDU (Mark Tinka)
Thu Apr 3 10:13:15 2014
From: Mark Tinka <mark.tinka@seacom.mu>
To: Nick Hilliard <nick@foobar.org>
Date: Thu, 3 Apr 2014 16:12:29 +0200
In-Reply-To: <533D5ABB.7080601@foobar.org>
Cc: nanog@nanog.org
Reply-To: mark.tinka@seacom.mu
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Thursday, April 03, 2014 02:57:31 PM Nick Hilliard wrote:
> I'm currently seeing ~100 prefixes originating from 4761,
> and an additional 725 transited through 4761. This
> would not be difficult to handle with prefix lists,
> assuming some level of automation.
Indeed.
I, for example, have an upstream that filters only on=20
AS_PATH. Naturally, we are quite aggressive and insistent=20
about filtering both on AS_PATH and prefix list across=20
interconnects to our downstreams, but if things were to blow=20
up on our side, the upstream in question would not be=20
protected (unless, of course, they are relying on "max-
prefix" as well).
Mark.
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