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28-2
Catalyst 2950 Desktop Switch Software Configuration Guide
78-14982-01
Chapter28 Troubleshooting
LRE Statistics
Table 28-1 Ethernet Port Statistics
Statistic Type Explanation
Transmit
Unicast Frames The total number of well-formed unicast frames sent by a port. It excludes frames sent with
errors or with multicast or broadcast destination addresses.
Multicast Frames The total number of well-formed multicast frames sent by a port. It excludes frames sent with
errors or with unicast or broadcast destination addresses.
Broadcast Frames The total number of well-formed broadcast frames sent by a port. It excludes frames sent with
errors or with unicast or multicast destination addresses.
Too old The total number of transmit frames discarded because they have exceeded their age limit.
Deferred 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.
Total Collision Frames The total number of frames sent without error after having 1 to 15 collisions. It includes
frames of all destination address types and excludes frames discarded because of insufficient
resources or late collisions.
Excessive Collision Frames The total number of frames that failed to be sent after 16 collisions. It includes frames of all
destination address types.
Late Collision Frames The total number of frames discarded because of late collisions detected during transmission.
It includes all transmit frames that had a collision after the transmission of the frame's 64th
byte. The preamble and SFD are not included in the frame's byte count.
VLAN discard frames Counts the number of transmit frames that were tagged with an 802.1q tag and discarded
during transmission.
Control frames Incremented each time a pause control frame is transmitted.
Tagged frames Counts the number of transmit frames that were tagged with an 802.1q tag.
Aborted frames Incremented for each packet for which transmission was started but aborted due to various
transmission errors such as excessive collisions.
Pause frames Incremented for each MAC pause control frame transmitted.
Single deferred frames Incremented for each frame which was deferred on its first transmission attempt but did
experience any subsequent collisions during transmission.
Multiple deferred frames Incremented for each frame that was deferred multiple times during its transmission attempt
due to collisions.
Single collisions Incremented for each frame that experienced exactly one collision during its transmission
attempt.
2-15 collisions Incremented for each frame that experienced between 2 and 15 inclusive collisions during its
transmission attempt.
Receive
Unicast Frames The total number of well-formed unicast frames received by a port. It excludes frames
received with errors, with multicast or broadcast destination addresses, or with oversized or
undersized frames. Also excluded are frames discarded or without a destination.