[143339] in North American Network Operators' Group
Re: IPv6 end user addressing
daemon@ATHENA.MIT.EDU (Owen DeLong)
Sat Aug 6 16:11:29 2011
From: Owen DeLong <owen@delong.com>
In-Reply-To: <CAAAwwbUa3marVD0jO9QWYG=tY=xa71Vcdc_Vc_=_=BNPpfmRiw@mail.gmail.com>
Date: Sat, 6 Aug 2011 13:05:44 -0700
To: Jimmy Hess <mysidia@gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Aug 6, 2011, at 11:44 AM, Jimmy Hess wrote:
> On Sat, Aug 6, 2011 at 1:28 PM, William Herrin <bill@herrin.us> wrote:
>=20
>> On Fri, Aug 5, 2011 at 12:17 PM, Brian Mengel <bmengel@gmail.com> =
wrote:
>>=20
>=20
>=20
>> On the flip side, /56 allows for 16M end-users in your /32 ISP
>> allocation. After which you can trivially get as many additional =
/32's
>> as you want. Is there any reason you want to super-optimize to get
>> 268M end-users squashed in that /32?
>>=20
>=20
> Arguably, if you only have one /32, and you ever get 65,536 =
customers
> each with a /48, getting as many /32s as you need should be no =
problem,
> also.
>=20
> But you might want to give them /56s, so you have more bits to =
logically
> divide those customers by region, or some other criteria to =
enable
> more efficient aggregation.
>=20
Policy supports you getting those bits left of the /32 instead now.
Look at ARIN 2011-3 which was adopted and ratified by the board and
is awaiting implementation by staff.
If you like this idea, support APNIC prop 98, too, please.
> That's the problem with the RIR's choice of issuing only /32s from =
which
> /48s are to be assigned.
> The customer has 80 bits to work with in organizing their hosts.
>=20
The /32 is only the default minimum for an ISP. A small ISP can probably =
work
with 16 bits. Larger ISPs were always expected to get more than a /32.
> But the ISP has only 16 bits in a /32 to work with.
>=20
Only if they're very small or not very intelligent in their RIR =
application.
Owen
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