Iperf tests:
iPERF COMMAND ARGUMENTS
iperf -s	starts server

iperf -c  xxx.www.yyy.zzz     starts client to server at ip address xxx.www.yyy.zzz 

no arg.	Default settings
-b	Data format
-r	Bi-directional bandwidth
-d	Simultaneous bi-directional bandwidth
-w	TCP Window size
  	




-p, -t, -i		Port, timing and interval
-u, -b		UDP tests, bandwidth settings
-m		Maximum Segment Size display
-M		Maximum Segment Size settings
-P		Parallel tests
-h 		help