Re: IPv6: numbering of point-to-point-links

[Carlos Friacas <cfriacas () fccn pt>]

Hi Lasse,

We use /64s.
::1 for one end, ::2 for the second end.

Using /126s or /127s (or even /120s) is a result of going with the v4 
mindset of conservation.

With a /32 you have 65536 /48s, and then 65536 /64s.
Guess you only need 1 /48 for all the p-to-p links, no?

Regards,
Carlos

(portuguese NREN, 6deploy.eu project partner)


On Mon, 24 Jan 2011, Lasse Jarlskov wrote:

> Hi all.
>
>
>
> While reading up on IPv6, I've seen numerous places that subnets are now
> all /64.
>
> I have even read that subnets defined as /127 are considered harmful.
>
>
>
> However while implementing IPv6 in our network, I've encountered several
> of our peering partners using /127 or /126 for point-to-point links.
>
>
>
> What is the Best Current Practice for this - if there is any?
>
> Would you recommend me to use /64, /126 or /127?
>
> What are the pros and cons?
>
>
>
>
>
> --
>
> Best regards,
>
> Lasse Jarlskov
>
> Systems architect - IP
>
> Telenor DK