On Oct 18, 2010, at 10:53 PM, Jack Bates wrote: > On 10/18/2010 7:16 PM, Robert E. Seastrom wrote: >> You are to be commended for your leadership in conserving space. Our >> children will surely be grateful that thanks to your efforts they have >> 99.99999% of IPv6 space left to work with rather than the paltry >> 99.9975% that might have been their inheritance were it not for your >> efforts. Bravo! > > Thanks. Actually, I think people are following the RIR example. ARIN handed > out a /32 as standard for an ISP, so a /32 is the framework even a medium > sized ISP will use. > No... ARIN hands out a MINIMUM /32. A medium sized ISP should be asking for larger.
> Our routing/IP Numbering Plan: > <regional assignment><pop assignment><customer assignment> > > /40 regional assignment supporting 256 regional assignments > /44 for only 16 pop assignments? > /48 to customer for only 16 customers per pop assignment? > Or, better...If you're that large... Start with a /28 /36 regional assignment supporting 256 regional assignments /40 for 16 pops per region /48 for 256 customer end-sites per POP or, if you have larger POPs, start with a /24 and /32 regional assignment supporting 256 regional assignments /36 for 16 pops per region /48 for 4,096 customer end-sites per POP or, if you have larger regions and more POPs per region /28 regional assignment supporting 16 regions /36 for 256 pops per region /48 for 4,096 customer end-sites per POP > Perhaps another view > > /40 regional assignment supporting 256 regional assignments > /44 still for 16 pop assignments > /56 to customer for 4096 customer assignments > > I'm sorry, but I just couldn't find a way to make /48 to customers work > appropriately, and ARIN seems to think a /32 is fair, yet I have to design an > IP assignment plan up front to make for more efficient routing. I actually > expect a /42-/43 per pop, and /38 per region even in the /56 to customer > model. > ARIN thinks a /32 is the MINIMUM for an ISP. Not the Maximum. Several ISPs have received larger than /32 and all you need to do is show a reasonable justification for the space. Owen
