ALR0645W The Discarded Class 3 Frame Rate of port port name in switch switch name was measured to be measured value cnt/s, which violated the defined warning-stress boundary value of boundary value cnt/s.
Explanation
The Discarded Class 3 Frame Rate measures the rate at which the port Discarded Class 3 Frames for any reason. Frames can be discarded due to many reasons, for example invalid addressing or header contents, or due to timeout caused by lack of buffer credits. Other error metrics may help in narrowing down the reason for the discards. 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 switch.
This message indicates that a threshold boundary violation occurred. In this case, the specified port in the switch has a Discarded Class 3 Frame Rate value that is greater than or equal to the warning-stress boundary, but less than 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 rate remains consistently high over time, this may be a cause for concern. Follow the trouble-shooting guidelines for the 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.