[135470] in North American Network Operators' Group
Re: Using IPv6 with prefixes shorter than a /64 on a LAN
daemon@ATHENA.MIT.EDU (Owen DeLong)
Tue Jan 25 18:30:17 2011
From: Owen DeLong <owen@delong.com>
In-Reply-To: <65421.1295994750@localhost>
Date: Tue, 25 Jan 2011 15:26:29 -0800
To: Valdis.Kletnieks@vt.edu
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Jan 25, 2011, at 2:32 PM, Valdis.Kletnieks@vt.edu wrote:
> On Tue, 25 Jan 2011 14:21:12 PST, Leo Bicknell said:
>=20
>> If you were allocating individual /48's, perhaps. But see, I'm a
>> cable company, and I want a /48 per customer, and I have a couple
>> of hundred thousand per pop, so I need a /30 per pop. Oh, and I
>> have a few hundred pops, and I need to be able to aggreate =
regionally,
>> so I need a /24.
>>=20
>> By my calculations I just used 16M /48's and I did it in about 60
>> seconds to write a paragraph. That's about 279,620 per second, so
>> I'm well above your rate.
>=20
> Fine. You got ARIN or somebody to allocate your *first* /24 in under =
a minute.
> Now how long will it take you to actually *deploy* that many =
destinations? And
> where do you plan to get your customers for the next 4 or 5 /24's, and =
how long
> will *those* deploys take?
>=20
> Face it Leo, you can't *sustain* that growth rate.
>=20
>> building in a lot of aggregation. Remember the very first IPv6
>> addressing proposals had a fully structured address space and only
>> 4096 ISP's at the top of the chain!
>=20
> How many Tier-1's are there now, even if you include all the wannabes?
> And how long would it take at current growth rates of Tier-1 status to =
run
> out the *other* 4,087 entries?
RIRs allocate to lots of non-Tier-1 organizations, so, that count is =
pretty
meaningless no matter what definition of "tier 1" you decide to use.
I suspect that there are probably somewhere between 30,000
and 120,000 ISPs world wide that are likely to end up with a /32
or shorter prefix.
Owen
