[134942] in North American Network Operators' Group
Re: IPv6 prefix lengths
daemon@ATHENA.MIT.EDU (William Pitcock)
Wed Jan 12 23:41:36 2011
Date: Wed, 12 Jan 2011 22:39:47 -0600
From: William Pitcock <nenolod@systeminplace.net>
To: Richard Barnes <richard.barnes@gmail.com>
In-Reply-To: <AANLkTimPTPk7TFw2=CucUrVe0VTAGETckXVZvhy13XDo@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Hi,
On Wed, 12 Jan 2011 22:49:15 -0500
Richard Barnes <richard.barnes@gmail.com> wrote:
> Hi all,
>
> What IPv6 prefix lengths are people accepting in BGP from
> peers/customers? My employer just got a /48 allocation from ARIN, and
> we're trying to figure out how to support multiple end sites out of
> this (probably around 10). I was thinking about assigning a /56 per
> site, but looking at the BGP table stats on potaroo.net [1], it looks
> like this is not too common (only .29% of prefixes). Thoughts?
Traditionally, /48s are per-site. You should get a /48 for each site,
in reality something like a /44 will do nicely giving you two
additional /48 for growth.
William
