http://www.ixchariot.com/products/datasheets/qcheck.html
 
 Qcheck, the network troubleshooting utility from Ixia, quickly checks network response time, throughput, and streaming performance. It even runs anywhere-to-anywhere traceroute!
 

 endpoint 
 
 QChenck and IxChariot tests use endpoints (unobtrusive software agents) installed at the source and destination points of a test. An IxChariot traffic pair is the two endpoints needed for one traffic session

 Web: www.ixiacom.com
 The latest versions of the endpoints are always available for
 free at http://www.ixiacom.com/support/endpoint_library/