On 19-nov-04, at 18:40, Owen DeLong wrote:
Now I hate to be the bearer of bad news, but having unaggregatable globally routable address space just doesn't scale and there are no routing tricks that can make it scale, whatever you put in the IP version bits, so learn to love renumbering.
This is patently false. If it were true, then I would have to renumber every time I changed telephone companies. I don't, so, obviously, there is some solution to this problem.
Well, the old saying is that there is no problem in computer science that can't be solved by adding a layer of indirection. Apparently this applies to telephone networks as well, because your phone number is no longer an address these days: it's more like a domain name. When you dial a number it's looked up in a big database to see where the call should go to. And don't forget that you still have to change your phone number when you move a great enough distance. In IP we somehow feel it's important that there are no geographical constraint on address use at all. That's a shame, because even if we aggregate by contintent that would save up to four times in the number of entries in the routing table of any router.