Re: using IPv6 address block across multiple locations

[Joel jaeggli <joelja () bogus com>]

On 10/31/11 05:59 , Owen DeLong wrote:
> Ideally, you should put a /48 at each location.
>
> Owen
>
> On Oct 31, 2011, at 12:56 AM, Dmitry Cherkasov wrote:
>
> > Hello,
> >
> > Please advice what is the best practice to use IPv6 address block
> > across distributed locations.
> >
> > Recently we obtained our PI /48 from RIPE. The idea was to assign
> > partial slices from this block to different locations (we have
> > currently 3 offices in Europe and 2 in USA). All locations are
> > interconnected with static VPNs. Each location is supposed to
> > establish BGP session with local ISP. Partial prefix /56 + aggregate
> > /48 (with long AS PATH) are to be announced by each office.
> >
> > The problem we ran across is that ISP in US does not wish to accept
> > prefixes longer then /48 from us.
> > Need your advice: is this normal to distribute /48 by /56 parts across
> > locations or should we obtain separate /48 for each of them? Or maybe
> > we need /32 that can be split into multiple /48? Anyway we are not ISP
> > so /48 looks quite reasonable and sufficient for all our needs.

It's not because it can't be de-aggregated further in general. if you
have 5 discreet site you really need at /45. if you can tthe
announcements of the regions to something less specific than a /48 e.g.
a /46  then by all means do so.

> > Thank you.
> >
> > Dmitry Cherkasov