North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: A proposal for reducing routes due to multihoming
Alexis Rosen wrote: >Bill Simpson claims that this idea is ~10 years old, but if so perhaps >it's time to air it again.... >It's dead simple, really: Assign address blocks to pairs of providers. >Both providers announce those blocks all the time, and assign addresses >out of those blocks to customers who multihome between those two >providers. That idea also assumes that providers exchange specifics within shared blocks. Otherwise it won't work. Doesn't sound like big savings... And is certainly a hell to manage. I demonstrated some time ago that the lower boundary on the routing table size given today's Internet topology is about 300 routes. That was done by analyzing AS-paths -- i.e. the assumption was that everything can be aggregated down to 1 route per AS. The result generally indicates that 90% of routes can be eliminated by renumbering and aggregation. The rest is simply too few to worry about. --vadim - - - - - - - - - - - - - - - - -
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