IPv6 end user addressing

Mon Aug 8 14:12:00 UTC 2011

On Mon, 8 Aug 2011, Valdis.Kletnieks at vt.edu wrote:

> On Mon, 08 Aug 2011 10:15:17 +0200, Mohacsi Janos said:
>
>> - Home users - they usually don't know what is subnet. Setting up
>> different subnets in their SOHO router can be difficult. Usually the
>> simple 1 subnet for every device is enough for them. Separating some
>> devices into  a separate subnets is usually enough for the most
>> sophisticated home users. If  not then he can opt for business service....
>
> You don't want to make the assumption that just because Joe Sixpack doesn't
> know what a subnet is, that Joe Sixpack's CPE doesn't know either.
>
> And remember that if it's 3 hops from one end of Joe Sixpack's internal net to
> the other, you're gonna burn a few bits to support heirarchical routing so you
> don't need a routing protocol. So if Joe's exterior-facing CPU gets handed a
> /56 by the provider, and it hands each device it sees a /60 in case it's a
> device that routes too, it can only support 14 devices.  And if one of the

more exactly 16 routing devices. You don't have to count the all 0 and all 
1 as reserved.... maybe each deeice can see /57 or /58 or /59.... 
depending of capabilities your devices....

I think daisy chaining of CPE routers is bad idea - as probably done in 
several IPv4 home networks. Why would you build several hierarchy into you 
network if it is unnecessary?

Best Regards,
 			Janos Mohacsi