IBM SC30-3681-08 manual Multiple collisions, Total collisions, Failed, excess collisions

Using Ethernet Network Interfaces

the second transmission attempt. This data is exported via SNMP as the dot3StatsSingleCollisionFrames counter.

multiple collisions

The Multiple Collisions counter increments when a packet has multiple collisions before being successfully transmitted. This data is exported via SNMP as the dot3MultipleCollisionFrames counter.

total collisions

The Total Collisions counter increments by the number of collisions a packet incurs.

failed, excess collisions

The Failed, Excess Collisions counter increments when a packet transmission fails due to 16 successive collisions. This error indicates a high volume of network traffic or hardware problems with the network. This data is exported via SNMP as the dot3StatsExcessiveCollisions counter.

failed, FIFO underrun

The Failed, FIFO Underrun counter increments when packet transmission fails due to the inability of the interface to retrieve packets from the local packet buffer fast enough to transmit them onto the network.

failed, carrier check or failed, carrier sense error

The Failed, Carrier Check counter increments when a packet collides because carrier sense is disabled. This error indicates a problem between the interface and its Ethernet transceiver. This data is exported via SNMP as the dot3StatsCarrierSenseErrors counter.

CD heartbeat error or SQE test error

The CD (Collision Detection) Heartbeat Error or SQE (Signal Quality Error) counter increments when the interface sends a packet but detects that the transceiver has no heartbeat. The packet is treated as successfully transmitted because some transceivers do not generate heartbeats. This data is exported via SNMP as the dot3StatsSQETestErrors counter.

internal mac tx errors or internal MAC trans errors

Transmit errors that are not late, excessive, or carrier check collisions. This data is exported via SNMP as the dot3StatsInternalMacTransmitErrors counter. This statistic is the sum of the FIFO Underruns.

RISC Microcode Version:

This gives the version of the microcode running in the RISC controller of the communications processor module.

Chapter 18. Using the Ethernet Network Interface 249