On Oct 9, 2007, at 1:53 PM, Valdis.Kletnieks@vt.edu wrote:
There are currently ~1500 prefixes with inconsistent origin AS. These are trivially identifiable:
<http://www.cymru.com/BGP/incon_asn_list.html>
Some of them are obvious mistakes (I doubt HKSuper is supposed to originate 4/8). But many of them are not, and the Internet works just fine.
And as Justin said, some sizable fraction of those 1500 prefixes are quite possibly *appearing* to Work Just Fine currently, but if something breaks, that will be 1500 NOC monkeys facing some difficult-to-debug routing issues....
Considering the number of inconsistently originated prefixes has been non-trivial for at least a decade, I have trouble believing this is a huge threat to the internet. Or even those 1500 NOC monkeys. (And wouldn't it be 3K - at least 2 ASNs per prefix? :) -- TTFN, patrick