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