66..99..22 Test SetupTest Setup
Restriction of Number of StepsRestriction of Number of Steps
RFC 2544 measures the throughput, frame loss, latency, and burst while
changing the load applied to the DUT by changing the transmission rate and
size of the Ethernet frame. In addition to the final results, Network Master
retains the measurement results at each load as an intermediate results, but
500 steps are retained at maximum. Depending on the setting of the steps, it is
possible to retain more than 500 steps, but in that case the oldest measurement
result(s) will be discarded.
Also, depending on the setting, only the results of one category (throughput,
frame loss, latency, or burst) may be retained in large amount
disproportionately. In order to avoid this, Network Master organizes the results
so that results at least 100 steps remain as shown in the examples below.
Example 1
TestTest
Number of Steps set inNumber of Steps set in
SetupSetup
Number of steps in whichNumber of steps in which
the measurement resultsthe measurement results
are retainedare retained
Throughput 100 100
Frame loss 200 200
Burst 500 200*
*: Measurement results for the first 300 steps are discarded.
Example 2
TestTest
Number of Steps set inNumber of Steps set in
SetupSetup
Number of steps in whichNumber of steps in which
the measurement resultsthe measurement results
are retainedare retained
Throughput 500
300*
1
Frame loss 200
100*
2
Burst 100 100
*1: Measurement results for the first 200 steps are discarded.
*2: Measurement results for the first 100 steps are discarded.
However, when the test mode is End to End, results up to 100 steps are
retained.
Example 3 When the test mode is End to EndEnd to End.
TestTest
Number of Steps set inNumber of Steps set in
SetupSetup
Number of steps in whichNumber of steps in which
the measurement resultsthe measurement results
are retainedare retained
Throughput 100 100
Frame loss 200
100*
1
Burst 500
100*
2
*1: Measurement results for the first 100 steps are discarded.
*2: Measurement results for the first 400 steps are discarded.
In the test setting, the total number of steps can be set to more than 500. In this
case, a warning is displayed on the Summary screen when the measurement is
started.
The number of test steps can be calculated by the following formula.
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