Interlogix NS3500-28T-4S User Manual - Manual (Page 81)

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Figure 4-3-5 Ethernet link Counters Page Screenshot
Object Description
 Alignment Errors The number of alignment errors (miss synchronized data packets).
 FCS Errors A count of frames received on a particular interface that are an integral number
of octets in length but do not pass the FCS check. This count does not include
frames received with frame-too-long or frame-too-short error.
 Single Collision
Frames
The number of successfully transmitted frames for which transmission is
inhibited by exactly one collision.
 Multiple Collision
Frames
A count of successfully transmitted frames for which transmission is inhibited
by more than one collision.
 Deferred
Transmissions
A count of frames for which the first transmission attempt on a particular
interface is delayed because the medium was busy.
 Late Collision The number of times that a collision is detected later than 512 bit-times into the
transmission of a packet.
 Excessive Collision A count of frames for which transmission on a particular interface fails due to
excessive collisions. This counter does not increment when the interface is
operating in full-duplex mode.
 Frame Too Longs A count of frames received on a particular interface that exceeds the maximum
permitted frame size.