On Fri, Jan 2, 2009 at 4:58 PM, Christopher Morrow <[email protected]> wrote: > On Fri, Jan 2, 2009 at 3:19 PM, William Herrin <[email protected]> wrote: >> ARIN policy requires multihomed users to demonstrate a need to deploy >> 500 machines on the Internet in order to qualify for end-use IPv4 >> address assignments. This number was selected above the operations >> minimum of 125 addresses based on the IETF and NANOG advice that their >> assistance is required to conserve routing slots so as not to overload >> the BGP system. > > I believe actually if you can demonstrate a 'unique routing policy' > you can at least get a /24 from one provider, and an ASN from > ARIN/RIPE/APNIC and enjoy a routing slot in the DFZ all your own.
Hi Chris, Correct. Your ISP can justify giving you a /24 in their next request if you request the /24 for multihoming purposes. And ARIN will then give you an AS#. However, that /24 will often come from a /8 where ARIN has declared the minimum allocation size to be /20. Though fortunately few, some carriers treat all /24 cutouts in such blocks as traffic engineering and filter them out. This results in an incomplete multihoming solution which still consumes a slot in most folks' routing table. I'd be lying if I said I thought the policy was internally consistent. Nevertheless, it exists and it springs from the assurance by the IETF and NANOG that we really must suppress multihoming or else BGP will overload and collapse. Regards, Bill Herrin -- William D. Herrin ................ [email protected] [email protected] 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004 _______________________________________________ rrg mailing list [email protected] https://www.irtf.org/mailman/listinfo/rrg
