This is what my network look like:

AS65xxx - AS4xxx - ISP

-AS65xxx is my private AS with our public network address.
-AS3XXX is our registered AS
ISP will see my AS PATH :   1xx.xxxx.xxx.xxx        4xxx 65xxx

I just wanted to be able to strip 65xxx from AS path so ISP can only see
my public address at AS 4xxx.  If I configure community as Martin
suggested this will also take out the path to my network.  Thanks.

Andy


-----Original Message-----
From: owner-m...@openbsd.org [mailto:owner-m...@openbsd.org] On Behalf
Of Claudio Jeker
Sent: Wednesday, December 16, 2009 2:30 AM
To: misc@openbsd.org
Subject: Re: bgpd help!!

On Wed, Dec 16, 2009 at 09:55:40AM +0100, Henning Brauer wrote:
> * Stuart Henderson <s...@spacehopper.org> [2009-12-16 02:31]:
> > On 2009-12-16, Doran Mori <dhm...@gmail.com> wrote:
> > > Have you tried looking at the filter rules in bgpd.conf(5)?
> > >
> > > Off the top of my head something like:
> > >   deny to <isp ip> { AS 65xxx }
> >
> > the OP is probably looking for something that strips private AS out
> > of the path, but still advertises them, which isn't supported.
>
> we really gotta fix that.
>

I'm not a big fan of molesting AS pathes. This cries for doom in a way
only Bob may find the right words for. Blocking sure, reannouncing with
a
new path maybe but just removing AS from pathes is evil and the routing
loop fairy will come to you and sprinkle your network with its magic
powder.

Do we need to add every stupid button a cizzcoee has?
--
:wq Claudio

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