Re: ISP IPv6 Deployment Scenarios in Broadband Access

[Gert Doering <gert@space.net>]

Hi,

On Fri, Nov 05, 2004 at 08:42:14AM +0200, Pekka Savola wrote:
> An operator which has deployed bridged-mode DSL ('RBE') said that the 
> only solution for providing bulk v6 access at the moment is requiring 
> the use of DHCPv6 for address assignment (i.e.: because DHCPv4 is 
> snooped for v4, the vendors seem to have implemented the same kind of 
> snooping for v6 w/ DHCPv6).
[..]
>  4) putting all the customers' v6 prefix information in a RADIUS or 
> similar database, so that the advertisement information could be 
> digged up from there.  A lot of work, and does not work automatically. 
> This would also need some glue between bulk config and RADIUS.

How are people envisioning "bulk access with IPv6" anyway?

I'm wondering specifically about the nature of the IPv6 allocations 
- are "operators" planning to do dynamic IPv6 allocations (today you get
a dynamic IPv4 /32, in the future you get a dynamic IPv6 /64)?  

Or are people planning to assign static /48s?

We do the latter, so we need to couple RADIUS and IP(v4/v6) address
management anyway - no big difference here for IPv6 access.  

OTOH, we have no "bulk access with RBE" anyway.   Bulk DSL is done with 
PPPoE/L2TP, which works fine (on Cisco) with IPv6 address pools for
assignment, or static assignments coming from radius.

Gert Doering
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