ALR0620E The Invalid Transmission Word Rate of port port name in device device name was measured to be measured value cnt/s, which violated the defined critical-stress boundary value of boundary value cnt/s.
Explanation
Invalid Transmission Word Rate measures the average number of invalid transmission words that were detected by the port, per second. Transmission words are primitive elements used by the fibre channel protocol for transmission of data. A frame consists of between 10 and 537 transmission words. A threshold was defined on this metric, which causes the measured value to be compared to the defined boundaries for each set of performance statistics collected from the storage system or switch.
This message indicates that a threshold boundary violation occurred. In this case, the specified port in the storage system or switch has an Invalid Transmission Word Rate that is greater than or equal to the critical-stress boundary that was defined for the related threshold.
Action
The threshold violation might indicate that a hardware or configuration problem exists either for this port or for the connected fabric. Isolated errors can be ignored in most cases, but if the error rate remains consistently high over time, this may be a cause for concern. Follow the trouble-shooting guidelines for the storage system or switch, and for the connected entity (storage system, switch, or server HBA).
Because isolated temporary errors can be ignored in most cases, consider enabling the alert suppression option "Suppress alerts unless the triggering condition has been violated continuously for a specified length of time" for this threshold. This can greatly reduce the number of unnecessary alerts.