Specifications

339
Choose the menu SNMP→RMON→Alarm to load the following page.
Figure 15-12 Alarm Config
The following entries are displayed on this screen:

Alarm Table
Select:
Select the desired entry for configuration.
Index:
Displays the index number of the entry.
Variable:
Select the alarm variables from the pull-down list.
Statistics
Select the RMON statistics entry from which we get the value of
the selected alarm variable.
Sample Type:
Specify the sampling method for the selected variable and
comparing the value against the thresholds.
• Absolute: Compares the v
alues directly with the thresholds
at the end of the sampling interval.
• Delta:
Subtracts the last sampled value from the current
value. The difference in the values is compared to the
threshold.
Rising Threshold:
Enter the rising counter value that trigge
rs the rising threshold
alarm, ranging from 1 to 2147483647.
Rising Event:
Select the index of the corresponding event which will be
triggered if the sampled value is larger than the rising Threshold.
Falling Threshold:
Enter the falling counter value t
hat triggers the falling threshold
alarm, ranging from 1 to 2147483647.
Falling Event:
Select the index of the corresponding event which will be
triggered if the sampled value is lower than the Falling
Threshold.
Alarm Type:
Specify the type of the alarm.
• Rising:
When the sampled value exceeds the Rising
Threshold, an alarm event is triggered.
• Falling:
When the sampled value is under the Falling
Threshold, an alarm event is triggered.
• All:
The alarm event will be triggered either the sampled
value excee
ds the Rising Threshold or is under the Falling
Threshold.