IPv6 portability between gateways

[Mark Smith]

On Wed, 12 Jan 2011 13:30:39 +0100
Gert Doering <gert at space.net> wrote:

> Hi,
> 
> On Wed, Jan 12, 2011 at 01:16:30PM +0100, Roger Wiklund wrote:
> > What's your take on this, how are you doing in your network? Can you
> > move the IPv6 address range between any gateway? Do you only care
> > about aggregation in the edge of your network?
> 
> I think internal aggregation is a hard MUST, otherwise the sheer number
> of, say, /56s in a /32 are going to kill you... (or /48 in DT's /19...).
> 
> Now, regarding customer migration, my personal approach would be to 
> permit it to happen, accepting some level of deaggregation - under 
> the assumption that physical relocation is not *that* frequent, and that
> people might change their contract at the same time to a new ISP, or
> to a new product offering (which might require renumbering anyway), etc.
> 

You could also offer something like a 3 to 6 month window for them
migrate away from the original /48 to a new local one. IPv6's preferred
and valid lifetime and multiple concurrent addressing support helps
with that migration. See RFC4162, "Procedures for Renumbering an IPv6
Network without a Flag Day".



> Since this is crystal ball stuff, I might be horribly wrong...
> 
> (Disclaimer: we're not a large-scale DSL/cable/... access ISP, so I 
> don't have good numbers regarding customer relocation, customer churn,
> etc. - I just spent some time thinking on how this might work out)
> 
> Gert Doering
>         -- NetMaster
> -- 
> did you enable IPv6 on something today...?
> 
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