Iperf is an essential tool for bandwidth calculation and monitoring. This tutorials will teach you the way to use the iperf command line to determine various parameters of link.
1 – Local Loop back.
Link Capacity: 1.32 GBytes
Link Performance: 1.13 Gbits/sec
2-Client / Server
Link Capacity: 107 MBytes
Link Performance: 89.3 Mbits/sec
3- LAN client / Server
Link Capacity: 111 MBytes
Link Performance: 93.4 Mbits/sec
4- WAN client / server
Link Capacity: 1.30 MBytes
Link Performance: 1.08 Mbits/sec
5- WAN client / server (another Link)
Link Capacity: 376 KBytes
Link Performance: 298 Kbits/sec