Allied Telesis AT-GS950/8 - Manual (Page 296)

Chapter 22: RMON
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2. From the RMON folder, select Alarm.
The RMON Alarm Configuration Page is displayed. See Figure 106.
Figure 106. RMON Alarm Configuration Page
3. The following fields are listed:
Index - This parameter specifies the ID number of the new group. The
range is 1 to 65535.
Interval - This parameter specifies the time (in seconds) over which
the data is sampled. Its range is 1 to 2147483647 seconds.
Variable - This parameter specifies the RMON MIB object that the
event is monitoring.
Sample type - This parameter defines the type of change that has to
occur to trigger the alarm on the monitored statistic. There are two
choices from the pull-down menu - DELTA value and ABSOLUTE
value. The DELTA setting compares a threshold against the difference
between the current and previous values of the statistic, while the
ABSOLUTE setting compares a threshold against the current value of
the statistic.
Rising Threshold - This parameter specifies a specific value or
threshold level of the monitored statistic. When the value of the
monitored statistic becomes greater than this threshold level, an alarm
event is triggered. The parameter’s range is 1 to 2147483647
Falling Threshold - This parameter specifies a specific value or
threshold level of the monitored statistic. When the value of the
monitored statistic becomes less than this threshold level, an alarm
event is triggered. The parameter’s range is 1 to 2147483647.