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4 – Managing Switches
Managing Alarms
4-8 59048-01 A
6. Enter values for the rising and falling thresholds. The rising threshold is the
count above which an alarm is generated. When the count exceeds the
rising threshold, one alarm is generated. The switch will not generate
another alarm for that event until the count descends below the falling
threshold, resetting the eligibility, and again exceeds the rising threshold.
The switch will down a port if an alarm condition is not cleared within three
consecutive sample intervals The default sample interval is 30 seconds. An
alarm is cleared when the threshold monitoring detects that the error rate
has fallen below the falling threshold. Consider the example in Figure 4-3.
Figure 4-3. Alarm Threshold Example
7. Enter a sample interval in milliseconds. The sample interval defines the
period of time in which to count events.
8. Check the Enable box to make the alarm eligible for use. Repeat steps 3
through 8 for each alarm you want to configure or enable. You must also
check the Enable All Alarm Thresholds box, which is the master control for
all alarm configurations.
9. Choose the OK button to save all changes.
4.2.2
Exporting Alarm Log Information to a File
To save the switch alarm log to a file, open the faceplate display and do the
following:
1. Open the Switch menu and select Export Alarm Log.
2. In the Save window, enter a file name.
3. Choose the Save button.
Rising
Threshold
Falling
Threshold
Event
Count
Sample Interval
Eligibility is
reset
Generate alarm;
eligibility ends
Generate alarm;
eligibility ends