Hirschmann RS20 User Manual page 193

Operation Diagnosis
The device allows you to detect this situation and report it to the network
management station. In the process, the device evaluates the error counters
of the port in the context of the port settings.
Possible Causes of Port Error Events
The following table lists the duplex operating modes for TX ports together
with the possible error events. The terms in the table mean:
Collisions: In half-duplex mode, collisions mean normal operation.
Duplex problem: Duplex modes do not match.
EMI: Electromagnetic interference.
Network extension: The network extension too great, or too many
hubs are cascaded.
Basic Configuration
Release 6.0 07/2010
9.5 Event Counter at Port Level
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