nanog mailing list archives
kooky BGP tricks
From: "E.B. Dreger" <eddy+public+spam () noc everquick net>
Date: Wed, 8 Oct 2003 03:49:47 +0000 (GMT)
Greetings all, Time for the "kooky routing idea of the year" post... Scenario: AS65000 is a bandwidth provider. One of their downstreams wishes to peer with AS65100, or to multihome with AS65100 as a second upstream. The obvious and 100% correct answer is for $downstream to register their own ASN, that anyone ready to multihome or peer can afford $500 up front and a few bucks per year. We all know this. However, $downstream wishes to advertise the routes without registering an ASN. AS65100 decides to advertise $downstream's prefixes as 65100 65000 ? exactly as if 65000 were sending only $downstream's routes to 65100. From a technical perspective, this works. Yes, there are issues with more-specifics and perhaps loop detection. The question: What would your reaction be if you were AS65000? Note that this is a political/admin question, _not_ a technical one. My thoughts:
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- kooky BGP tricks E.B. Dreger (Oct 07)
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- Re: kooky BGP tricks E.B. Dreger (Oct 08)