[lir-wg] Discussion about RIPE-261

On Mon, May 26, 2003 at 10:38:02AM -0700, Michel Py wrote:
> Folks,
> [consolidated answers]
> 
> > Hank Nussbacher wrote:
> > So don't assign wealth.
> 
> I never did.
> 
> > Use some number that has direct influence on IPv6
> > usage.  Among the possibilities:
> > - # of computer per capita
> 
> This would definitely have a direct bearing on IPv6 usage, but is
> subject to change a lot more rapidly than population. In China for
> example, I have seen some projections that say the number of connected
> computers per capita will be multiplied by 100 in the next 10 years.
> Compare this with the growth of the Chinese population.
> 

Even computers per capita may be an understatement. 
I believe at some point GSM people will wake up and realize how easy
IPv6 makes the upcoming data services as oposed to 10 million users 
NAT setups. 

> 
> I agree and I will add to this that even if you don't have the
> more-specific announcements the geography could be used to take an
> educated guess at traffic engineering. Example:
> 
> - You buy transit from to bigger ISPs, A and B. ISP A has dark fiber all
> over the place but not too much L3 infrastructure and they backhaul your
> circuit to Paris which is their main hub. You know that ISP B has a
> large number of peers in an IXP in Germany where lots of ISPs also peer.
> 
> - If you have no specific route to a prefix, it makes sense to send all
> traffic to German prefixes to ISP B, because the likeliness of ISP B
> having a shorter connection is greater.
> 

This is very valid. However there's the counter example
of doing engineering by looking at matrixes of pretty
much anonymous traffic flows. 

And then there's trying to influence the downstream which is 
hard-to-impossible in the agregated world. And the downstream is what most
ISPs traffic engineer - not the upstream. 

cheers

-- 
Carlos Morgado <chbm at cprm.net> - Internet Engineering - Phone +351 214146594
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