If you've worked on networks long enough, you're probably familiar with Iperf. This application is great for testing throughput between two computers on your network. Unfortunately, if you find yourself in a situation where you have less than two computers to test with, Iperf is less than ideal.

Fortunately, Cisco includes TTCP on most of its platforms. TTCP is a networking tool for measuring throughput between 2 systems. It is very similar to Iperf, and most users accustomed to the operation of Iperf should find TTCP very easy to work with.

Be aware that the ttcp command is hidden in Cisco IOS and will not be found in the normal command lists. Like, Iperf, you will need to set up both a client and server. Either side can be a PC or a Cisco device. For more information, see Cisco's Using Test TCP (TTCP) to Test Throughput.