EXFO FTB-8500 Series for FTB-500 - Manual (Page 180)

Traffic Analyzer Tabs
166 FTB-8500 Series and FTB-8120NGE/8130NGE
Ethernet Statistics
Ethernet Statistics
Press TEST, Traffic Analyzer, and Eth. Stats.
Valid Frame Counts
Note: Valid Frame Counts is only available with Framed Layer 2.

Multicast: The number of Multicast frames transmitted/received
without any FCS errors. Broadcast frames are not counted as multicast
frames.

Broadcast: The number of Broadcast frames transmitted/received
without any FCS errors. Broadcast frames have a MAC address equal to
FF-FF-FF-FF-FF-FF.

Unicast: The number of Unicast frames transmitted/received without
any FCS errors.

N-Unicast (Non-Unicast): The sum of Multicast and Broadcast frames
transmitted/received without any FCS errors.

Total: The number of frames transmitted/received without any FCS
error.