Cabletron Systems SmartSTACK ELH100 - Manual (Page 101)

9033060 Web-Based Management 83
Alarm
The Alarm and Event Groups allow you to record important events or
immediately respond to critical network problems. The Alarm and Event
Control Tables are used together to define specific criteria that will
generate response events. Remember that the Web Agent can only
display control entries. To define a specific entry, you must use third-party
network management software. Select “Alarm” then “Alarm Entry” to
display the items listed in the control table for monitoring.
Item Description
Alarm Index An index that uniquely identifies an entry in the alarm table.
Each such entry defines a diagnostic sample at a particular
interval for an object on the device.
Interval Interval in seconds over which the data is sampled and
compared with the rising and falling thresholds.
Variable Object identifier of the particular variable to be sampled.
Sample Type Method of sampling the selected variable and calculating the
value to be compared against the thresholds. If the value of this
object is absoluteValue(1), the value of the selected variable
will be compared directly with the thresholds at the end of the
sampling interval. If the value of this object is deltaValue(2), the
value of the selected variable at the last sample will be
subtracted from the current value, and the difference compared
with the thresholds.
Value Value of the statistic during the last sampling period.
Startup Alarm If the first sample (after this entry becomes valid) is greater than
or equal to the risingThreshold AND alarmStartupAlarm is
equal to risingAlarm(1) or risingOrFallingAlarm(3), then a single
rising alarm will be generated. If the first sample (after this entry
becomes valid) is less than or equal to the fallingThreshold
AND alarmStartupAlarm is equal to fallingAlarm(2) or
risingOrFallingAlarm(3), then a single falling alarm will be
generated.
Rising Threshold When the current sampled value is greater than or equal to this
threshold, and the value at the last sampling interval was less
than this threshold, a single event will be generated. A single
event will also be generated if the first sample after this entry
becomes valid is greater than or equal to this threshold and the
associated alarmStartupAlarm is equal to risingAlarm(1) or
risingOrFallingAlarm(3). After a rising event is generated,
another such event will not be generated until the sampled
value falls below this threshold and reaches the
alarmFallingThreshold.