Test network throughput with TTCP

TTCP is hidden IOS command designed to measure network throughput. In order to use TTCP you need to configure a sender and a receiver. Keep in mind this will result in increased Router load.

R2#ttcp transmit 192.168.1.1
 
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001  tcp  -> 192.168.1.1
ttcp-t: connect (mss 1460, sndwnd 4128, rcvwnd 4128)
ttcp-t: 16777216 bytes in 75696 ms (75.696 real seconds) (~215 kB/s) +++
ttcp-t: 2048 I/O calls
ttcp-t: 0 sleeps (0 ms total) (0 ms average)

R1#ttcp receive
 
ttcp-r: buflen=8192, align=16384/0, port=5001
rcvwndsize=0, delayedack=yes  tcp
ttcp-r: accept from 192.168.1.2 (mss 1460, sndwnd 4128, rcvwnd 2668)
ttcp-r: 16777216 bytes in 75696 ms (75.696 real seconds) (~215 kB/s) +++
ttcp-r: 8330 I/O calls
ttcp-r: 0 sleeps (0 ms total) (0 ms average)