On Tue, 25 Jan 2011 07:02:30 +0100 (CET) sth...@nethelp.no wrote: > > > IPv6 is classless; routers cannot blindly make that assumption for > > > "performance optimization". > > > > > Blindly, no. However, it's not impractical to implement fast path switching > > that > > handles things on /64s and push anything that requires something else > > to the slow path. > > Any vendor who was stupid enough to do *hardware* switching for up to > /64 and punted the rest to software would certainly not get any sales > from us. >
Actually, they'd most likely punt the rest to exact match rather than longest match cams. Exact match cams are cheaper because they're simpler, and have been made even more so because they've been for more than a decade layer 2 switches, and they're are far many more of them than there are routers. > 128 bits. No magic. > "magic" is another way of describing progress. Electric start cars would have been "magic" to owners of Motorwagens.
