North American Network Operators Group
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Re: Geographic v. topological address allocation

  • From: Kent W. England
  • Date: Thu Nov 20 23:16:09 1997 
At 10:25 AM 17-11-97 -0500, Sean M. Doran wrote:
>...  Hierarchical routing is the only known means of
>scaling IP addresses as they exist now, and therefore the
>only hierarchy that can be imposed on IP addresses is
>strictly topological.
>

This is true, but the definition of the top of the hierarchy is arbitrary
and is the nexus of the debate about "topological" versus geographical
addressing, which I interpret as "ISP at top" versus "exchange point at
top" hierarchies. Both are valid topological hierarchies.

--Kent