Troubleshooting the SLSA Subsystem

802.3 Send Stats
Transmit Underruns is the number of frames that had their transmission aborted because
memory could not be accessed quickly enough to allow transmission.
Defer Packets is the number of frames that could not be transmitted immediately because
the LAN was in use.
Send Late Collision is the number of frames that had their transmission aborted because
a collision occurred before the completion of the retry process.
Total Collision Frames is the number of frames that had at leat one collision during
transmission.
Excessive Collisions is the number of frames that had their transmission aborted after
having 15 collisions.
Total Collisions is the total number of collisions detected during transmission of frames to
the LAN.
Heartbeat Check Errors is the number of times a heartbeat error occurred.
Loss of Carrier Sense is the number of frames that had their transmission aborted
because carrier sense was lost.
802.3 Receive Stats
Receive Overruns is the number of frames discarded because memory could not be
accessed fast enough to allow reception.
CRC Errors is the number of frames discarded because of frame checksum errors.
Receive Late Collision is the number of frames discarded because a collision occurred
before the completion of the retry process.
Alignment Errors is the number of frames discarded because the frame did not end on a
byte boundary.
Receive Long Frame is the number of frames discarded because the length of the frame
was greater than the maximum frame size.
Receive Short Frame is the number for frames discarded becasue the length of the frame
was smaller than the minimum frame size.
802.5 (Token-Ring) Stats
Line Errors indicates that the adapter repeated or copied a frame or token and a violation
of the hardware-clocking protocol was detected. A high count in this field might indicate a
hardware problem with the upstream neighbor of this adapter.