# Ethernet Errors

The CiscoView Monitor Port window displays the following error information for an Ethernet port:

MAC Tx (dot3StatsInternalMacTransmitErrors)

MAC Rx (dot3StatsInternalMacReceiveErrors)

SQE Test (dot3StatsSQETestErrors)

Carrier Sense (dot3StatsCarrierSenseErrors)

Giant Frames (dot3StatsFrameTooLongs)

Late Collisions (dot3StatsLateCollisions)

Alignment Check Errs (dot3StatsAlignmentErrors)

MAC Tx (dot3StatsInternalMacTransmitErrors)

Number of frames for which transmission failed because of an internal MAC layer transmit error. (These are transmit errors that were not picked up in any other count.)

MAC Rx (dot3StatsInternalMacReceiveErrors)

Number of frames for which reception failed because of an internal MAC layer receive error. (These are receive errors that were not picked up in any other count.)

SQE Test (dot3StatsSQETestErrors)

Number of times the PLS sub-layer generated the Signal Quality Error for a particular interface.

Carrier Sense (dot3StatsCarrierSenseErrors)

Number of transmission attempts that failed because the carrier sense condition was lost or never asserted.

Giant Frames (dot3StatsFrameTooLongs)

Number of received frames that are bigger than maximum permitted size.

A giant frame indicates that a nonlocal software error occurred or that a protocol using nonstandard frame lengths is in use.

Late Collisions (dot3StatsLateCollisions)

Number of times a collision was detected later than 64 octets into the transmission. (The total number of late collisions included in the collision count.)

Late collisions indicate either that the network has too large a propagation delay between the reporting station and other stations, or that some other station is not detecting/responding to collisions correctly.

Alignment Check Errs (dot3StatsAlignmentErrors)

Number of frames with alignment errors. An alignment error occurs when the frame length is not an integral number of octets and the frame cannot pass the FCS test.

Alignment errors are usually caused by a nonlocal network problem.