On Tue, Oct 26, 2010 at 12:45:45PM -0700, George Bonser wrote:
But how do they multihome without an ASN?
Well, get space from one of your providers, and an LOA to get the other to announce the deaggregate for you. Or they've got legacy space, and never had an AS; just get their providers to announce it for them.
If they have an ASN, how did they get it without going to an RIR and paying a fee?
Legacy assignment...acquisition... And maybe they did, but just because they pay their RIR for an ASN doesn't mean they want to step up into the fees and documentation headaches of getting their own space. ($$$$) Some are even singlehomed with an ASN. (I can think of at least two regional providers that had an ASN while being singlehomed because they had downstream BGP speaking customers.) Just because you don't do it, doesn't mean someone else doesn't. It's a big world. --msa