Re: using IRR tools for BGP route filtering

[Peter Francis]

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/