HP 441877-00B Software And Configuration Manual page 39

Link Status Change Count
This counter indicates the number of times the link status has been changed.
Rx CRC Error Count
This counter indicates the number of receive packets with CRC errors. Packets less than 64 bytes are
not counted in this statistic.
Alignment Errors
This counter holds the number of receive packets with alignment errors. In order for a packet to be
counted, it must pass address filtering and must be 64 bytes or greater in length. If receives are not
enabled, then this counter does not increment. This counter is valid only in MII mode during 10/100
Mbps operation.
Rx Symbol Error Count
This counter indicates the number of symbol errors between reads. The count increases for every bad
symbol received, whether or not a packet is currently being received and whether or not the link is
up. This counter will increment along with the Rx Sequence Error Count when either the fiber cable is
disconnected or the connector is not seated completely. Also, during driver load, this counter will
increments minimally.
Rx Error Count
This counter indicates the number of packets received in which I_RX_ER was asserted by the PHY. In
order for a packet to be counted, it must pass address filtering and must be 64 bytes or greater
(from <Destination Address> through <CRC>, inclusively) in length. If receives are not enabled, then
this counter does not increment. In TBI mode, this counter increments on the reception of /V/ codes.
Rx Missed Packets Count
This counter indicates the number of missed packets. Packets are missed when the hardware receive
FIFO has insufficient space to store the incoming packet. This could be the result of having too few
buffers allocated or because there is insufficient bandwidth on the IO bus. These packets are also be
counted in the Total Packets Received counter as well as in Total Octets Received.
Tx Single Collision Count
This counter indicates the number of times that a transmitted packet encountered a single collision.
This counter increments only if the device is in half-duplex mode.
Tx Excessive Collisions Count
This counter indicates when 16 or more collisions have occurred on a packet. This counter
increments only if the device is in half-duplex mode.
Tx Multiple Collision
This counter indicates the number of times that a transmitted packet encountered more than one
collision but less than 16. This counter increments only if the device is in half-duplex mode.
Tx Late Collisions Count
This counter indicates collisions that occur after 512 bit (64 byte) times. This counter increments only
if the device is in half-duplex mode.
Tx TOTAL Collision
This counter indicates the total number of collisions seen by the transmitter. This counter increments
only if the device is in half-duplex mode.
Tx DMA Underruns
Installation 39