EXFO AXS-200/850 Ethernet Test Set - Manual (Page 165)

Traffic Generation & Monitoring
Ethernet Test Set 155
Summary Results
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Frame Loss (F.Loss): A frame loss event is declared when a sequence
number is not received after 20 ms of the previously received frame or
packet.
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Out-of-Sequence (OOSeq): An out-of-sequence event is declared
when the received frame sequence number is smaller than the
expected frame sequence number.
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Pause: Pause frames are received to declare the event when valid flow
control frames are injected to interrupt the packet transmission for the
requested pause time.