Chap 4
Switch: cut-through, store-and-forward
cut-through: fast forward, fragment-free

Basic functions: learning (from source MAC)
	          forwarding (to another port)
	          filtering (blocking)
	          buffering (asymmetric network)

Latency (delay): time needed from souce to destination

slot time for IEEE 802.3=51.2 micro sec
time = (total bits)/speed

Chap 5