[146024] in North American Network Operators' Group
Re: using IPv6 address block across multiple locations
daemon@ATHENA.MIT.EDU (Justin M. Streiner)
Mon Oct 31 10:43:27 2011
Date: Mon, 31 Oct 2011 10:42:33 -0400 (EDT)
From: "Justin M. Streiner" <streiner@cluebyfour.org>
To: Dmitry Cherkasov <doctorchd@gmail.com>
In-Reply-To: <CAP5kh1B9SbeA0T7EYtC2=PakUucyLk2WkxjwYaE470=jHGeMVA@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Mon, 31 Oct 2011, Dmitry Cherkasov wrote:
> The problem we ran across is that ISP in US does not wish to accept
> prefixes longer then /48 from us.
> Need your advice: is this normal to distribute /48 by /56 parts across
> locations or should we obtain separate /48 for each of them? Or maybe
> we need /32 that can be split into multiple /48? Anyway we are not ISP
> so /48 looks quite reasonable and sufficient for all our needs.
Think of a /48 the same way you'd use a /24 of IPv4 space in a multi-homed
design. /48 is the smallest v6 block that you can reasonably expect to be
globally reachable. Many providers will not accept anything smaller,
unless it's from one of their own blocks, in which case it will likely get
aggregated into their larger prefix.
jms
