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Re: using IRR tools for BGP route filtering
From: Danny McPherson <danny () tcb net>
Date: Thu, 22 Jun 2000 13:14:23 -0600

I agree with this, and have seen the document, and have worked for 
large providers that performed prefix filtering on customers long
before IOPS existed.  

However, if every ISP performed prefix-based filtering between one 
another, it'd be improved "a lot more".  I recall more than a few 
instances when providers inadvertently broke other providers customers 
by "mis-advertising" prefixes.  

And if every ISP performed SA verification between one another 
(presumably with the same filters) it would again be improved "a 
lot" more.


If every ISP does prefix based filtering on its
downstream customers, the integrity of the Internet
routing system will be improved a lot. The document
below proposes such a model:


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