ALR0637W The Loss of Sync Rate of port port name in device device name was measured to be measured value cnt/s, which violated the defined warning-stress boundary value of boundary value cnt/s.
Explanation
The Loss of Sync Rate measures the rate at which the port lost synchronization with its partner port. These types of errors usually indicate physical link problems, caused by faulty SFP modules or cables, or caused by faulty connections at the switch or patch panel. However in some cases this can also occur due to mismatching port speeds between the partner ports, when auto-negotiation of link speed is disabled. 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 storage system or switch has a Loss of Sync 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 port. 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.