EXFO ETS-1000 - Manual (Page 45)

Typical Tasks and Solutions
Ethernet Tester Analyzer 37
RFC 2544 Methodology
Back-to-back
The test allows estimating the time during which the DUT is capable to
manage the maximum load.
The analyzer sends a burst of frames with minimum interframe gap to the
DUT and then counts the number of frames forwarded by the DUT. If the
count of transmitted frames is equal to the number of frames forwarded,
the time of transmission is being increased and the test is being rerun until
there are two trials succeeded with no frame lost. If the number of
forwarded frames is less than the number of transmitted ones, the time of
transmission is being reduced and the test is being rerun.