[134938] in North American Network Operators' Group
Re: IPv6 prefix lengths
daemon@ATHENA.MIT.EDU (Mark Andrews)
Wed Jan 12 23:01:41 2011
To: ml@kenweb.org
From: Mark Andrews <marka@isc.org>
In-reply-to: Your message of "Wed, 12 Jan 2011 22:54:23 CDT."
<4D2E776F.2080400@kenweb.org>
Date: Thu, 13 Jan 2011 15:01:13 +1100
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
In message <4D2E776F.2080400@kenweb.org>, ML writes:
> On 1/12/2011 10:49 PM, Richard Barnes 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?
> >
> > Thanks,
> > --Richard
> >
> >
> > [1]<http://bgp.potaroo.net/v6/as2.0/index.html>
> >
>
> Are you talking about assigning /56s per POP, enterprise site?
>
> If /56s are just in your iBGP..shouldn't be a problem. You're going to
> aggregate and just announce your /48 to your eBGP peers, yes??
If there are multiple indendent end sites then get a /48 for each of them.
A /48 is for a SITE not a ENTERPRISE.
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka@isc.org
