[134939] in North American Network Operators' Group
Re: IPv6 prefix lengths
daemon@ATHENA.MIT.EDU (Randy Carpenter)
Wed Jan 12 23:03:34 2011
Date: Wed, 12 Jan 2011 23:02:33 -0500 (EST)
From: Randy Carpenter <rcarpen@network1.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
If you are going to have each site connected separately to the outside world, you will want a /48 for each site.
If you are going to aggregate them internally, you can use whatever you want, although you should be able to get a /48 for each site anyway.
You don't want to announce anything longer than a /48 to the outside world.
-Randy
--
| Randy Carpenter
| Vice President - IT Services
| Red Hat Certified Engineer
| First Network Group, Inc.
| (800)578-6381, Opt. 1
----
----- Original Message -----
> 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?
>
> Thanks,
> --Richard
>
>
> [1] <http://bgp.potaroo.net/v6/as2.0/index.html>
