[130930] in North American Network Operators' Group
Re: Definitive Guide to IPv6 adoption
daemon@ATHENA.MIT.EDU (Jack Bates)
Mon Oct 18 12:59:12 2010
Date: Mon, 18 Oct 2010 11:59:05 -0500
From: Jack Bates <jbates@brightok.net>
To: Randy Carpenter <rcarpen@network1.net>
In-Reply-To: <1778891850.11261.1287420469464.JavaMail.root@zimbra.network1.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 10/18/2010 11:47 AM, Randy Carpenter wrote:
>
> Unfortunately, it is not as easy as that in practice.
>
> I recently worked with a customer that has ~60,000 customers
> currently. We tried to get a larger block, but were denied. ARIN said
> they would only issue a /32, unless immediate usage could be shown
> that required more than that. Their guidelines also state /56 for
> end-users. I am a big proponent of nibble boundaries, too. I think if
> you are too big to use only a /32, you should get a /28, /24, and so
> forth. It would make routing so much nicer to deal with. /31 and
> such is just nasty.
>
>
ARIN does reservations (unsure at what length, but at least down to
/31). If you were to fill the /32 quickly, you could easily request the
next block. To my knowledge, they've only handed out 1 or 2 networks
shorter than /32.
Correct me if I'm wrong, but isn't 60,000 customers at /56 2^24
assignments from a /32? Seems plenty. Even at /48 assignments, you'd get
65,536 assignments. So how can you justify more than a /32?
Jack
