[AusNOG] IPv6 Addressing

[Mark Andrews]

In message <D0D2F0DBA66F264F98BC1B4B7923C5D40771A947 at xmb-hkg-411.apac.cisco.com
>, "Michael Christie (micchris)" writes:
> I would suggest:
> 
> 1) It makes your design simpler: /64 everywhere
> 2) There are 18,446,744,073,709,551,616 /64s available*

Or 281,474,976,710,656 /48 sites supporting up to 65536 subnets.
The end user assignment is a site.

> *apart from special/reserved ranges.
> 
> -----Original Message-----
> From: ausnog-bounces at lists.ausnog.net
> [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Graham Maltby
> Sent: Wednesday, 6 April 2011 1:28 PM
> To: ausnog at lists.ausnog.net
> Subject: Re: [AusNOG] IPv6 Addressing
> 
> I am probably showing my complete lack of IPv6 knowledge here but can
> someone explain the logic or reasoning behind allocating
> 18,446,744,073,709,551,616 address to a point to point link?  Or suggest
> some reading that might clarify that.
> 
> Graham
> 
> 
> 
> On 5/04/2011 8:27 AM, John Edwards wrote:
> > The "safe" way to do it appears to be to administratively allocate a 
> > /64 anyway, even if you configure for a longer prefix.
> >
> > This way if you need to replace interfaces with some equipment that 
> > doesn't support a /127 for some reason, or runs more optimally with a 
> > /64, or the management software gui insists on it - you don't have to 
> > renumber.
> >
> > John
> >
> >
> > On 04/04/2011, at 11:16 PM, Mark Grinceri wrote:
> >
> >> I have received our IPv6 allocation from APNIC. Now the question is 
> >> what is everyone doing for there point to point links /64, /126 or 
> >> /127
> >>
> >> From what I can gather most articles are just saying use /64, however
> 
> >> I'm heading towards /126 but I'd like to know what the majority of
> >> IPv6 networks are assigning (ie Internode). I only want to do this
> once.
> >
> >
> >
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org