[116706] in North American Network Operators' Group

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Re: IPv6 Addressing Help

daemon@ATHENA.MIT.EDU (Jon Lewis)
Fri Aug 14 12:44:14 2009

Date: Fri, 14 Aug 2009 12:40:34 -0400 (EDT)
From: Jon Lewis <jlewis@lewis.org>
To: David Freedman <david.freedman@uk.clara.net>
In-Reply-To: <4A85878A.2000208@uk.clara.net>
Cc: Nanog <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

On Fri, 14 Aug 2009, David Freedman wrote:

> Will keep it simple, this is what I (and I suspect many others) do
>
> /128 - Loopback (what else?)
> /126 - Router p2p
> /112 - Router LAN shared segments (p2mp)

Why even go that big on LAN segments?  i.e. If you have a LAN/VLAN where 
you have say 20 devices (routers, switches, etc.) and know you'll never 
have more than say 50-100 devices, why not go as far as using a /120?

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  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
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