Re: Small IX IP Blocks

[Brendan Halley <brendan () halley net au>]

IPv4 and IPv6 subnets are different. While a single IPv4 is taken to be a
single device, an IPv6 /64 is designed to be treated as an end user subnet.

https://tools.ietf.org/html/rfc3177 section 3.
On 05/04/2015 9:05 am, "Mike Hammett" <nanog () ics-il net> wrote:

> That makes sense. I do recall now reading about having that 8 bit
> separation between tiers of networks. However, in an IX everyone is
> supposed to be able to talk to everyone else. Traditionally (AFAIK), it's
> all been on the same subnet. At least the ones I've been involved with have
> been single subnets, but that's v4 too.
>
>
>
>
> -----
> Mike Hammett
> Intelligent Computing Solutions
> http://www.ics-il.com
>
>
>
> ----- Original Message -----
>
> From: "Valdis Kletnieks" <Valdis.Kletnieks () vt edu>
> To: "Mike Hammett" <nanog () ics-il net>
> Cc: "NANOG" <nanog () nanog org>
> Sent: Saturday, April 4, 2015 5:49:37 PM
> Subject: Re: Small IX IP Blocks
>
> On Sat, 04 Apr 2015 16:06:02 -0500, Mike Hammett said:
>
> > I am starting up a small IX. The thought process was a /24 for every IX
> > location (there will be multiple of them geographically disparate), even
> though
> > we nqever expected anywhere near that many on a given fabric. Then okay,
> how do
> < we d o v6? We got a /48, so the thought was a /64 for each.
>
> You probably want a /56 for each so you can hand a /64 to each customner.
>
> That way, customer isolation becomes easy because it's a routing problem.
> If customers share a subnet, it gets a little harder....