We can build bigger doors (MTU) but the conveyer belts are stuck
at 100Mm/sec. We need faster conveyer belts!
We have them now.
(waiting for HPPI-64 or G-Ether technologies w/ baited breath
No need to wait.
(Oh, and it would be better if your breath were bated rather than baited 
And then watch out 2-4Gbps backplanes... (that is aggregate right?)
--
--bill
There are technologies that already have aggregate throughput of 20+Gbps.
--Kent
speaking as a L2 agnostic and PacBell NAP consultant