HP 1.10GB Virtual Connect Ethernet Module for c-Class BladeSystem - Manual (Page 170)

Hardware information screens 170
Port Statistic Description
Dot3StatsExcessiveCollisions 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.
Dot3StatsInternalMacTransmitErrors A count of frames for which transmission on a particular interface fails due
to an internal MAC sublayer transmit error. A frame is only counted by an
instance of this object if it is not counted by the corresponding instance of
either the dot3StatsLateCollisions object, the dot3StatsExcessiveCollisions
object, or the dot3StatsCarrierSenseErrors object. The precise meaning of
the count represented by an instance of this object is
implementation-specific. In particular, an instance of this object may
represent a count of transmission errors on a particular interface that are
not otherwise counted.
Dot3StatsCarrierSenseErrors The number of times that the carrier sense condition was lost or never
asserted when attempting to transmit a frame on a particular interface.
The count represented by an instance of this object is incremented, at
most, once per transmission attempt, even if the carrier sense condition
fluctuates during a transmission attempt. This counter does not increment
when the interface is operating in full-duplex mode.
Dot3StatsFrameTooLongs A count of frames received on a particular interface that exceeds the
maximum permitted frame size. The count represented by an instance of
this object is incremented when the frameTooLong status is returned by the
MAC service to the LLC (or other MAC user). According to the conventions
of IEEE 802.3 Layer Management, received frames for which multiple
error conditions are obtained are counted exclusively according to the
error status presented to the LLC.
Dot3StatsInternalMacReceiveErrors A count of frames for which reception on a particular interface fails due to
an internal MAC sublayer receive error. A frame is only counted by an
instance of this object if it is not counted by the corresponding instance of
either the dot3StatsFrameTooLongs object, the dot3StatsAlignmentErrors
object, or the dot3StatsFCSErrors object. The precise meaning of the
count represented by an instance of this object is implementation-specific.
In particular, an instance of this object may represent a count of receive
errors on a particular interface that are not otherwise counted.
Dot3StatsSymbolErrors For an interface operating at 100 Mb/s, the number of times an invalid
data symbol occurred when a valid carrier was present. For an interface
operating in half-duplex mode at 1000 Mb/s, the number of times the
receiving media is non-idle (a carrier event) for a period of time equal to
or greater than slotTime, and during which there was at least one
occurrence of an event that causes the PHY to indicate 'Data reception
error' or 'carrier extend error' on the GMII.
For an interface operating in full-duplex mode at 1000 Mb/s, the number
of times the receiving media is non-idle (a carrier event) for a period of
time equal to or greater than minFrameSize, and during which there was
at least one occurrence of an event that causes the PHY to indicate 'Data
reception error' on the GMII. The count represented by an instance of this
object is incremented, at most, once per carrier event, even if multiple
symbol errors occur during the carrier event. This count does not increment
if a collision is present.
Dot3ControllnUnknownOpcodes A count of MAC Control frames received on this interface that contain an
opcode that is not supported by this device.
Dot3InPauseFrames A count of MAC Control frames received on this interface with an opcode
indicating the PAUSE operation. This counter does not increment when the
interface is operating in half-duplex mode.