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User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
127
Transmit Discarded Packets
The number of outbound packets which were chosen to be discarded eventhough
no errors had been detected to prevent their being transmitted. One possible
reason for discarding such a packet could be to free up buffer space.
Transmit Errors
The number of outbound packets that could not be transmitted because of errors.
Etherlike Statistics
Alignment Errors
The number of alignment errors (missynchronized data packets).
Late Collisions
The number of times that a collision is detected later than 512 bit-times into the
transmission of a packet.
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.
Excessive Collisions
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.
Single Collision Frames
The number of successfully transmitted frames for which transmission isinhibited
by exactly one collision.
Internal MAC Transmit
Errors
A count of frames for which transmission on a particular interface fails due to an
internal MAC sublayer transmit error.
Multiple Collision Frames
A count of successfully transmitted frames for which transmission is inhibited by
more than one collision.
Carrier Sense Errors
The number of times that the carrier sense condition was lost or never asserted
when attempting to transmit a frame.
SQE Test Errors
A count of times that the SQE TEST ERROR message is generated by the PLS
sublayer for a particular interface.
Frames Too Long
A count of frames received on a particular interface that exceed the maximum
permitted frame size.
Deferred Transmissions
A count of frames for which the first transmission attempt on a particularinterface
is delayed because the medium was busy.
Internal MAC Receive
Errors
A count of frames for which reception on a particular interface fails due to an
internal MAC sublayer receive error.
RMON Statistics
Drop Events
The total number of events in which packets were dropped due to lack of
resources.
Jabbers
The total number of frames received that were longer than 1518 octets(excluding
framing bits, but including FCS octets), and had either an FCS or alignment error.
Received Bytes
Total number of bytes of data received on the network. This statistic can be used
as a reasonable indication of Ethernet utilization.
Collisions
The best estimate of the total number of collisions on this Ethernet segment.