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would not have been feasible to use this mode to number of packets larger than several tens. One
may see in the previous example, the total number of packets received was 7681 for a 60 seconds
test at only 94 kbps.
The essence of the Network Measurement System was to smooth the performance of such tests,
both from the user operation and data availability point of view. As you will see, measurement
experiments using the Network Measurement System are based on the same concepts. However,
a regular user essentially will care just about setting up the experimental stage, schedule the
experiment to run now or at some time in the future and then, collecting the data which is already
available in different formats by the test is done. In the meanwhile, he or she can focus on some
other things, such as interpreting the results and drawing conclusions from experiments already
finished.
The next chapter will start presenting some theoretical aspects, needed to understand the
foundation of this work related to QoS measurements.
The third chapter contains the foundation of the Network Measurement System architecture, how
you could setup the experiment described before but this time using NMS. Then, this
presentation approaches the management related technologies involved in the operation of NMS,
such as the SNMP management, the session and scheduling mechanism, the results collections
and much more.
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