A、Fast switching reducesa routers CPU utilization， compared to process switching

B、All packets of a flow， except for the first packet， use the information in the fast cache

C、It can be enabled with the interface command ip route-cache

D、Fast switching uses a fast cache maintained in a router’s control plane

E、The fast cache contains information about how traffic from different data flows should beforwarded

F、Even though the fast switching is enabled， the first packet of a flow is still process switched