Package ttcp

A tool for testing TCP connections

ftp://ftp.sgi.com/sgi/src/ttcp/

ttcp is a tool for testing the throughput of TCP connections. Unlike other
tools which might be used for this purpose (such as FTP clients), ttcp does
not read or write data from or to a disk while operating, which helps ensure
more accurate results.

General Commands
Command Description
ttcp test TCP and UDP performance