20 Nov
1997
20 Nov
'97
11:09 p.m.
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