[CAUSE] The tmnxIomEventOverflow notification is generated when tmnxIomResStateClr, tmnxIomResExhausted and tmnxIomResHighLimitReached occur more than 200 times because of resource usage fluctuation. The IOM raises the final trap to indicate overflow and stops logging traps. [EFFECT] Some FP notifications configured on the card may not be received. [RECOVERY] Notifications will resume once the Overflow clear is set.