The venerable mgen (http://cs.itd.nrl.navy.mil/work/mgen/) is another good option, provided you don't want lots of bandwidth. It has some flexibility in scripting the flows it creates. Jonathon -----Original Message----- From: Jason Leschnik [mailto:leschnik@gmail.com] Sent: Monday, 26 September 2011 11:21 p.m. To: Naiden Dimitrov Cc: nanog@nanog.org Subject: Re: flow generating tool Iperf is a good start http://iperf.sourceforge.net/ Would be interested in any other tools as well. -- Regards, Jason Leschnik. [m] 0432 35 4224 [w@] jason dot leschnik <at> ansto dot gov dot au<jason.leschnik@ansto.gov.au> [U@] jml974@uow.edu.au This email and attachments: are confidential; may be protected by privilege and copyright; if received in error may not be used, copied, or kept; are not guaranteed to be virus-free; may not express the views of Kordia(R); do not designate an information system; and do not give rise to any liability for Kordia(R).