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4 – Managing Switches
Configuring Port Threshold Alarms
59048-04 Rev. B 4-17
D
5. Enter a value for the rising trigger. A rising trigger alarm is generated when
the event count per interval exceeds the rising trigger. The switch will not
generate another rising trigger alarm for that event until the count descends
below the falling trigger and rises again above the rising trigger. Consider
the example in Figure 4-10.
6. Enter a value for the falling trigger. A falling trigger alarm is generated when
the event count per interval descends below the falling trigger.
Figure 4-10. Port Threshold Alarm Example
7. Enter a sample window in seconds. The sample window defines the period
of time in which to count events.
8. Repeat steps 3 through 7 for each alarm you want to configure or enable.
9. Click the OK button to save all changes.
Note: The switch will down a port if a rising trigger alarm is not cleared
after three consecutive sample windows.
Rising
Trigger
Falling
Trigger
Event
Count
Sample Window
Generate falling
trigger alarm;
eligibility is reset
Generate rising
trigger alarm;
eligibility ends
Generate rising
trigger alarm;
eligibility ends