...
However, geographic addressing could give us aggregation with provider
independece. If you examine European routes in the routing table of a
router on the American west coast, you'll see that the vast majority of
those routes point towards the same next hop. So if you could express
an aggregate that encompasses all those routes and point that aggregate
towards that next hop, you could filter out all those specific routes
and the routing table in that one router would be a lot smaller. At
each hop the number of routes that have a different next hop than the
aggregate increases, until at some point the aggregate doesn't serve a
useful purpose anymore. But by then you're in Europe or at least on the
American east coast, where you can heavily aggregate Asia.
You'll have to produce the BGP4 table for a pretty compelling simulation
model of a worldwide Internet with a hundred million enterprise customers
and ten billion total hosts to convince me. I'm serious.
Brian
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