What are the applications for 40G?

High speed, cost effective data intensive applications.
The better question is who will buy it or use it?
Companies who need 10GE or more but not 100GE
Much larger market than 100GE because it will be lower cost
Fast Ethernet – 171 M
Gigabit Ethernet – 78M
10 Gigabit Ethernet – 317K
(was 514k last July and 854k in Jan 06)
100 Gigabit Ethernet – None Yet
Worldwide Switched Ethernet Port Shipments in 2006 according to Dell’Oro