I have done QoS testing using Endace DAG cards - they can do capture as well as traffic generation. See http://www.endace.com/dag-8.1sx.html Jonathon 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).