[116812] in North American Network Operators' Group
Re: Anyone else seeing "(invalid or corrupt AS path) 3 bytes E01100" ?
daemon@ATHENA.MIT.EDU (Nathan Ward)
Thu Aug 20 07:52:45 2009
From: Nathan Ward <nanog@daork.net>
To: nanog list <nanog@nanog.org>
In-Reply-To: <000901ca2035$cfcc03d0$0a00000a@nil.si>
Date: Thu, 20 Aug 2009 23:52:21 +1200
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 19/08/2009, at 6:58 AM, Ivan Pepelnjak wrote:
> No. You cannot influence the inbound traffic apart from not
> advertising some
> of your prefixes to some of your neighbors or giving them hints with
> BGP
> communities or AS-path prepending. Whatever you do with BGP on your
> routers
> influences only the paths the outbound traffic is taking. What you'd
> actually need is remote-triggered black hole. Search the Nanog
> archives for
> RTBH, you'll find a number of links in a message from Frank Bulk
> sent a few
> days ago.
Or, you can prepend your advertisement with the troublesome ASN.
Works for one or two troublesome ASNs as a quick hack at 3am - don't
do it unless you understand why it works and why you shouldn't do it.
--
Nathan Ward
