On Mon, 08 Oct 2007 21:32:50 EDT, "Patrick W. Gilmore" said:
On Oct 8, 2007, at 6:45 PM, Justin M. Streiner wrote:
I never said it was. My experience, both in my previous life as the operator of a regional ISP and since then in other capacities is that having disjoint origins for a chunk of some provider's address space is basically asking for trouble, and it's the kind of trouble that may ony pop up when something breaks.
I'm afraid your experience is not the same as many, many people.
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....