[ipv6-wg at ripe.net] What is a site?

On Fri, 6 May 2005, JORDI PALET MARTINEZ wrote:
> Hi,
> 
> Just one clarification. I was only trying to make an example, probably not
> the best one. The idea is that a subnet is not used for a single device, of
> course, but for a single set of them which are related, for example in terms
> of who is accessing that network. So the clarified example will be: If the
> same service provider (probably the manufacturer but it may be also a third
> party company, even the ISP itself) is responsible for keeping the
> maintenance of the freezer and the washing machine and the dish washing
> machine, they could be allocated in a single subnet, but a different one
> that the supermarket that will refill my beverage in the freezer, and a
> different one that will refill the fish.
> 
> Regarding your view of allowing a /60, I think if we want to go into that
> direction is better to seek for a /56 or even better, a /52. But I'm still
> convinced that we should stay with /48. Today SOHOs doesn't subnet because
> the need has not come thanks, unfortunately to NAT, which avoided the
> creation of innovation around Internet (those new services and applications
> that will come with IPv6 and end-to-end restoration).

<snip>

I've been on almost all levels when it comes to use of IPv6 in practice, 
end-user, tunnelbroker, LAN/site provider, ISP, transit provider and I've 
done two mistakes since I started to use IPv6 in 99 or was it 2000...

1.) I used /127, even some /128, that was really stupid and have caused 
me lots of pain, /64 are the easiest way. Or even /126 for some 
point-to-point links.

2.) I used /64 for end-users, not even for a singel LAN did this work out, 
I always had to give out extra /64 for someone/something running there.
So I changed to using /60 and it worked out flawless for all the typical 
situation, mostly end-users or LAN.


not sure there is any need for defining what a site is. What I see as a 
more important issue are an "agreement" about other sizes than /64 and 
/48.
I most cases are /64 too small (see above) and a /48 total waste of space. 
A /60 make sense now and in the next few years but I do see a need for 
something bigger, /56 seems to be a good choice. If you get any bigger 
a /48 are probably better to use anyway.



-- 

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Roger Jorgensen              |
rogerj at stud.cs.uit.no        | - IPv6 is The Key!
http://www.jorgensen.no      | roger at jorgensen.no
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