Technical data

RackSwitch G8000 ISCLI Reference
Chapter 3: Statistics Commands
 77BMD00128, September 2009
dot3StatsSingle-
CollisionFrames
A count of successfully transmitted frames on a particular interface for
which transmission is inhibited by exactly one collision.
A frame that is counted by an instance of this object is also counted by the
corresponding instance of either the ifOutUcastPkts, ifOutMul-
ticastPkts, or ifOutBroadcastPkts, and is not counted by the
corresponding instance of the dot3StatsMultipleCollision-
Frame object.
dot3StatsMultiple-
CollisionFrames
A count of successfully transmitted frames on a particular interface for
which transmission is inhibited by more than one collision.
A frame that is counted by an instance of this object is also counted by the
corresponding instance of either the ifOutUcastPkts, ifOutMul-
ticastPkts, or ifOutBroadcastPkts, and is not counted by the
corresponding instance of the dot3StatsSingleCollision-
Frames object.
dot3StatsLate-
Collisions
The number of times that a collision is detected on a particular interface
later than 512 bit-times into the transmission of a packet.
Five hundred and twelve bit-times corresponds to 51.2 microseconds on a
10 Mbit/s system. A (late) collision included in a count represented by an
instance of this object is also considered as a (generic) collision for pur-
poses of other collision-related statistics.
dot3StatsExcessive
Collisions
A count of frames for which transmission on a particular interface fails
due to excessive collisions.
dot3StatsInternal-
MacTransmitErrors
A count of frames for which transmission on a particular interface fails
due to an internal MAC sub layer 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 dot3Stats-
CarrierSenseErrors 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.
Table 3-6 Ethernet Statistics for Port
Statistics Description