[29363] in North American Network Operators' Group
Re: using IRR tools for BGP route filtering
daemon@ATHENA.MIT.EDU (Peter Francis)
Mon Jun 19 18:09:50 2000
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Date: Mon, 19 Jun 2000 15:07:21 -0700
To: Joe Rhett <jrhett@isite.net>
From: Peter Francis <peter@softaware.com>
Cc: nanog@merit.edu
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My mistake in the original post.
I am looking for the list of (for instance) customers of Sprint that are purely "downstream" of Sprint.
Now that I think about there may not be any easy way to distinguish between a small ISP that is multi-homed to Sprint and some other provider (their traffic I would want to send to Sprint) and BBN (who also appear to be one AS hop behind Sprint from my networks perspective and whose traffic I do not want to send to Sprint.)
I know I can come up with a list of "major" backbone AS's and filter their traffic off by hand but I was looking for a "cleaner" solution by using the IRR.
I hope that clarifies what I am trying to accomplish.
Peter
At 2:35 PM -0700 6/19/00, Joe Rhett wrote:
> > How would one extract the following information from the IRR:
>
>> the list of AS's which are non-transit customers of a given backbone provider
>
>Wish upon a star?
>
>If they are non-transit customers, then their networks won't be announced
>outside of that provider's own network. So unless you can access that
>provider's own BGP tables directly you can't know this information.
>
>--
>Joe Rhett Chief Technology Officer
>JRhett@ISite.Net ISite Services, Inc.
>
>PGP keys and contact information: http://www.noc.isite.net/Staff/
