>-----Original Message-----
>From: Joe Maimon [mailto:jmai...@ttec.com]
>Sent: Monday, May 04, 2009 10:04 AM
>To: Joe Greco
>Cc: nanog list
>Subject: Re: Where to buy Internet IP addresses
>
>
>
>Joe Greco wrote:
>
>> One of the goals of providing larger address spaces was to reduce (and
>> hopefully eliminate) the need to burn forwarding table entries where
>> doing so isn't strictly necessary. When we forget this, it leads us
>> to the same sorts of disasters that we currently have in v4.
>>
>> ... JG
>
>And if you are encouraging /48 handouts, /32 isnt large enough to prevent
that
>on the global level.
If you are handing out /48s then
if have more than 64k clients (or will in the next few years) then
You should ask (or should have asked) for more than a /32
(Need 128k clients? == /31)
...
(Need 512k clients? == /29)
...
...
...
(Need ~512,000k clients? == /19)
And, again, each of those clients has 64k subnets.
With each subnet supporting as many hosts as they want to put there.
And, we can allocate 2^16 (64k) of THOSE (/19) sized allocations from the
CURRENT (2000::)/3.
IMHO - While that should last us a "long time", we can follow that
up with 4000::/3 - and revisit policies then, as needed.
And, we could do something like use /56s for home-users and the math above
"shifts larger" ...
Ask, and ye shall receive.
/TJ
