HP Integrity BL860c i2 Server-Blade - Manual (Page 136)

Hardware information screens 136
Port Statistic Description
Dot3StatsDeferredTransmissions A count of frames for which the first transmission attempt on a
particular interface is delayed because the medium is busy. The count
represented by an instance of this object does not include frames
involved in collisions. This counter does not increment when the
interface is operating in full-duplex mode.
Dot3StatsLateCollisions The number of times that a collision is detected on a particular
interface later than one slotTime into the transmission of a packet. A
(late) collision included in a count represented by an instance of this
object is also considered as a (generic) collision for purposes of other
collision-related statistics. This counter does not increment when the
interface is operating in full-duplex mode.
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.
Dot3StatsInternalMacTransmitError
s
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.