[ipv6-wg] IPv6 on P2P links

On Thu, May 26, 2011 at 10:07:39AM +0200, Jasper Jans wrote:
> Can anyone give me some real world experience with IPv6 numbering on P2P links in their network?
> 
> I've seen the recommendations swing from '/64' to '/127 if your equipment can handle it' and even
> to 'do not assign anything at all just use link-local' and access your devices over the loopback
> which your IGP will distribute.
> 
> The last option seems interesting to me from a IP assignment point of few. It safes me having
> to allocate a block for this part of the infrastructure. I'm just wondering if in the long run
> it will not make life harder.
> 
> Jasper
> 

Hello, 

on our side we use /126 for P2P links. I've heard some others using /64 or /127.
Some allocate a /64 but configure a /126 to always have :1 and :2 in order to avoid mistakes by calculating the good hosts ip addresses.

Here is my point of view on how we can subnet an IPv6 subnet : http://www.as8218.eu/frnog-ipv6-subnetting.pdf

It's not intended to be a best practice but this is how I've done on AS8218 network (the example1 in the pdf from page 11 to 22).

Have a look at page 17-18.

Regards, 

-- 
Pierre-Yves Maunier
AS8218 IP/Project Engineer
tel +33 1 49 97 07 45
mob +33 6 30 92 18 36
fax +33 1 49 97 07 30
pymaunier at neotelecoms.com

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