Line Load (Mbps)
User defined
Check boxes for the following predefined sizes are available: 64, 128,
256, 512, 768, 1024, 1280, 1518 and 1519 to 16000(Using the field at
right bottom).
Stepped
Setup of Start frame size, End frame size and Step frame size is
available. The frame size starts at Start frame size and
increases/decreases in intervals of Step frame size until the frame size is
above/below End frame size (the increase or decrease depending on the
specified start and end values).
Constant
A Frame size field for specifying the constant size is available.
The 'stepped' mode is convenient for testing different frame sizes consistently
and equally distributed. As a consequence it produces more smooth and
detailed graphs when the step frame size is arbitrarily low. The test extends in
time for smaller step frame sizes.
Frame size is protocol headers and payload combined. Frame size does not
include preamble and interframe gap.
The different test line loads used in the test are specified as a Minimum
(Min) and Maximum (Max) - varied in intervals of the value specified in the
Step field. The test always starts at Maximum line load and decreases until
the line load is less than Minimum. The results can be presented in either
Mbps or as Percent.
Valid range of Min, Max, Step depends on the unit and Ethernet interface.
Percent
0.0008 to 100.0000 %.
Mbps
10M interface: 0.00008 to 10.000 Mbps *
1
100M interface: 0.0008 to 100.00 Mbps *
1
1G interface: 0.008 to 1000.00 Mbps *
1
10G interface: 0.08 to 10000.00 Mbps *
2
*1: Setting is only available with the Ethernet 10/100/1000 interface.
*2: Setting is only available when the Ethernet 10 Gig option is installed.
Stop on no frame loss at maximum utilization
The test will continue to test the next frame size if the current test step at a
specific line load and frame size does not have any frames lost.
Auto search
Allows you to let the test automatically find the maximum line load that gives
zero frame loss, using a specified resolution. Auto Search can run in one of
the two following modes:
Smart that assumes that there is a higher probability of frame loss
occurring closer to Max, and therefore makes a skewed binary search
searching the higher line loads first.
Binary that will perform a binary search of the specified line load
interval from Max to Min.
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