IP version Host address Port A node A path between two nodes The duration of the test Type of packets being sent Number of packets sent on network What algorithm is used to space packets Time between test packets, in seconds (for periodic tests) IP version Type of service (IP precedence) Differentiated services code point IPv6 option for QoS Threshold used to distinguish between a large finite delay and loss Amount of test traffic Are bytes moving memory to memory or disk to disk* Size of TCP buffers used Reno, Vegas, HSTCP, ScalableTCP, etc Number of parallel streams Additional user-defined parameters Attributes that apply to all (or nearly all) parameters If true, the value of this parameter should be reported in the response If "min", the parameter should be at least the given value; if "max", the parameter should be at most the given value; if "exact", the parameter should be exactly this value. The tool and optional command lines to use These elements indicate a request for various statistical summaries of data The interval provides a hint to the service as to the interval between measurements required if it is to make new measurements Request the raw data The maximum number of measurements to be returned If false, new measurements should not be made to satisfy this request If true, everything that can be reported, should be, otherwise individual report attributes are used The requested characteristic The subject of the measurement(s) to be returned The methodology to employ A request for statistics to be returned The endpoint to which the parameters apply FIXME: does this work? The measurement(s) should have been made using this tool, if this element is present The measurement(s) must have been made in this time period Tool parameters