[12011] in North American Network Operators' Group
Re: Filters and reality
daemon@ATHENA.MIT.EDU (Paul G. Donner)
Tue Aug 26 21:21:06 1997
Date: Fri, 26 Sep 1997 16:08:10 -0700
To: "David R. Conrad" <davidc@apnic.net>, Sean Donelan <SEAN@sdg.dra.com>
From: "Paul G. Donner" <pdonner@cisco.com>
Cc: nanog@merit.edu, davidc@apnic.net
At 08:32 AM 8/27/97 +0900, David R. Conrad wrote:
>[Apologies for an (almost technical) post from outside NA to NANOG]
>
>Hi,
>
>>Should we continue to poke holes in our filters to let Sprint's customer's
>>customer routes through, or should we keep trying to explain to the Sprint
>>NOC why their customer's customers could use shorter prefix length
>>announcements?
>
>I suppose it depends on what slope you want the graph at
>http://www.iepg.org/ops/bgptable.html to have. Regardless of whether
>the filters are a "good idea" or not, they do tend to limit routing
>table growth and its implications, if for no other reason than smaller
>sites are "encouraged" to go to their providers for address space due
>to fear of being filtered.
No argument there, but what about more consistency in filtering which *might*
lead to more predictability in routing behavior? Given, diversity in
address assignment (as well as policy) serves as a cause the variation in
filtering policy.
- donner
>
>Regards,
>-drc
>
>
