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From: Derek Fawcus <dfawcus@cisco.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] peering
Date: Tue, 27 Jan 2004 23:26:14 +0000	[thread overview]
Message-ID: <20040127232614.D16382@edinburgh.cisco.com> (raw)
In-Reply-To: <000b01c3e40d$e3fb2260$9214598a@mars>; from aletko@iname.com on Mon, Jan 26, 2004 at 08:11:18AM -0500

On Mon, Jan 26, 2004 at 08:11:18AM -0500, Artem Letko wrote:
> AT&T does inbound filtering on the Cisco's.
>
> Art.

Not to mention any specifics... but I believe the above sort of thing is
correct.  The routes exchanged are run through a filter to remove crap.

where crap can be invalid routes (bogons),  routes for prefixes that
are too long (or short),  and routes that violate a given policy.

Then there are all sort of other fudges,  like manipulating the path
you receive from,  or supply to a given peer (i.e. inserting/removing ASNs).

DF

>
> ----- Original Message -----
> From: "David Presotto" <presotto@closedmind.org>
> To: <9fans@cse.psu.edu>
> Sent: Sunday, January 25, 2004 8:26 PM
> Subject: [9fans] peering
>
>
> > Anyone out there connect to an ISP peering point (exchange, MAE,
> whatever)?
> > I'm interested in what you do to avoid crappy BGP routes.  Anyone have
> > experience with rtConfig, either good or bad?
>


      reply	other threads:[~2004-01-27 23:26 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-26  1:26 David Presotto
2004-01-26 13:11 ` Artem Letko
2004-01-27 23:26   ` Derek Fawcus [this message]

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