EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 - Manual (Page 186)

Test Setup - Test Configurator, Timer, and System
174 FTB/IQS-88000 Series
RFC 2544 - Subtests
Frame Loss Configuration
The objective of this test is to find the percentage of frames that are lost
due to lack of resources. Starting at the specified maximum rate (Max.
Rate), the test is performed for a specific frame size and for the specified
duration (Trial Duration). The test is repeated by decreasing the rate by
the specified granularity (Granularity), then the test is repeated again until
there are two successive trials in which no frames are lost. The test is
performed for the defined number of trials (Trials). The test is performed
for each defined frame size.

Max. Rate is the maximum rate the test should begin with, in terms of
a percentage of the line rate (%), Mbit/s, or Gbit/s. The accepted
values are as shown in the Max. Rate table on page 171. For Dual Test
Set, Max. Rate is configurable for both local to remote (L -> R) and
remote to local (R -> L) directions. For Dual Port topology, Max. Rate
is configurable for both P1 to P2 (P1->P2) and P2 to P1 (P2->P1)
directions.

Trial Duration represents the time value for each trial in
minutes:seconds: 1 second to 30 minutes (default is 00:01).

Trials represents the number of times the test will be generated:
1 (default) to 50 trials.

Granularity corresponds to the percentage interval between each
throughput value used for the test: 1% to 10% (RFC) - (default). For
example, 10% granularity means that the test will be performed for
100%, 90%, 80%... of the rate value.