Network throughput test between 2 AIX servers

The simplest way to measure throughput between two AIX servers is by performing an FTP test using the dd command to generate data transfer. This method shows the transfer speed or throughput for the specified data size:
#src-system> ftp dst-system
…
…
ftp>  put "|dd if=/dev/zero bs=32k count=10000" /dev/null
200 PORT command successful.
150 Opening data connection for /dev/null.
10000+0 records in
10000+0 records out
226 Transfer complete.
327680000 bytes sent in 1.406 seconds (2.277e+05 Kbytes/s)
local: |dd if=/dev/zero bs=32k count=10000 remote: /dev/null
ftp>bye