Address clustering intuition

Jim Dixon jdd at
Fri Nov 10 07:17:31 UTC 1995

On Thu, 9 Nov 1995, Alan Hannan wrote:

> ] I've formed an intuition that, if all IP addresses were portable (ie.
> ] independent of ISP) and assigned on a strictly geographic basis, then
> ] there would *automatically* be clustering of addresses equivalent to
> ] that obtained from CIDRization as a result of marketplace forces and
> ] the practicalities of technology.
>  While this would perhaps increase the 'possibility' of aggregation
>  increase, it ignores the fact that networks are laid out w/ wires
>  and planned logically wrt tariff issues and existing infrastructure
>  and capacity.

I don't see that this is relevant.  If I call PacBell in San Jose,
it's a 408 number.  In San Francisco, it's a 415 number.  What does
this have to do with wires etc?  The point is that every telephone
company knows where 408 is and how to route traffic to it.
Jim Dixon                                           jdd at
VBCnet GB Ltd       +44 117 929 1316       fax +44 117 927 2015
VBCnet West Inc      +1 408 971 2682       fax +1  408 971 2684

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