In message <4d4eb93e.6000...@brightok.net>, Jack Bates writes: > On 2/5/2011 11:57 PM, Mark Andrews wrote: > > > > Rationalising to power of 2 allocations shouldn't result in requiring > > 256 times the space you were claiming with the 8 bits of shift on > > average. A couple of bits will allow that. > > > I didn't claim 8 bit average (if I accidentally did, my apologies). I > claimed a minimum of 8 bits. Somewhere between 12 and 16 is more likely. > However, with new ARIN proposals, we will see shorter shifts (yet still > over 8 bit shifts) as it does nibble allocations for everything (pop > assignments nibble aligned, ISP allocations nibble aligned, ISP to ISP > reallocation policies). It treats utilization as a 75% bar with nibble > alignments to allow for proper growth at the ISP level.
Why would a pop need to be nibble aligned? Customers should be nibble aligned as it requires a delegation in the DNS. A pop doesn't need a delegation in the DNS. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org
