On Thu, 27 Dec 2007 12:11:54 +0100 Iljitsch van Beijnum <iljitsch@muada.com> wrote:
On 27 dec 2007, at 11:57, sthaug@nethelp.no wrote:
"Configure this stuff manually" may work for a small number of customers. It is highly undesirable (and probably won't be considered at all) in an environment with, say, 1 million customers.
Of course not. But RAs on a subnet with a million customers doesn't work either, nor does DHCP on a subnet with a million customers.
If we're talking about provisioning cable/DSL/FTTH users, that's a completely different thing. Here, DHCPv6 prefix delegation to a CPE which then provides configuration to hosts on its LAN side would be the most appropriate option. However, the specifics of that model need to be worked out as there are currently no ISPs and no CPEs that do that, as far as I know.
I haven't had a chance to test it, but according to "Deploying IPv6 Networks", IOS can support DHCPv6 based prefix delegation. It even supports multiple downstream interfaces on the CPE - you configure the subnet number you want on each of the interfaces, and the CPE will configure the DHCP-PD learned /48 on the front of them automatically and then start announcing those prefixes in RAs out those interfaces. Regards, Mark. -- "Sheep are slow and tasty, and therefore must remain constantly alert." - Bruce Schneier, "Beyond Fear"