[29422] in North American Network Operators' Group

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Re: using IRR tools for BGP route filtering

daemon@ATHENA.MIT.EDU (Danny McPherson)
Thu Jun 22 15:15:31 2000

Message-Id: <200006221914.NAA09567@tcb.net>
To: nanog@merit.edu
From: Danny McPherson <danny@tcb.net>
Reply-To: danny@tcb.net
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Date: Thu, 22 Jun 2000 13:14:23 -0600
Errors-To: owner-nanog-outgoing@merit.edu



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.

-danny

> 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:
> 
> http://www.iops.org/Documents/routing.html



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