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Advanced Alarm Configuration 3-13
Alarm Configuration
The Þelds in the Alarms Watch display include:
Index The index is a number that uniquely identiÞes each
alarm. Index numbers are user-deÞned; you can use any
indexing scheme that works for you. These numbers are
permanently assigned to their associated alarms;
however, index numbers made available by the deletion
of existing alarms can be assigned to new alarms, as
needed. Note that indices 2000 to 3999 are reserved and
unavailable.
Interval Indicates the amount of time, in seconds, over which the
selected variable will be sampled. At the end of the
interval, the sample value is compared to both the rising
and falling thresholds conÞgured for the alarm.
Sample Indicates whether the sample value to be compared to
the thresholds is an absolute, or total value Ñ that is, the
total value counted for the selected variable Ñ or a
relative, or delta value Ñ the difference between the
value counted at the end of the current interval and the
value counted at the end of the previous interval.
LoThrshld Indicates the set value for the low, or falling threshold.
Event # Indicates the event index number that the falling
threshold points to: this is the event that will be triggered
if the falling threshold is met or crossed. If the value for
this Þeld is zero, no event will be triggered.
HiThrshld Indicates the set value for the high, or rising threshold.
Event # Indicates the event index number that the rising
threshold points to: the event that will be triggered if the
rising threshold is met or crossed. If the value for this
Þeld is zero, no event will be triggered.
Status Indicates the status of the alarm: valid, invalid, or
underCreation. An alarm that is invalid is not functional;
it may be referring to a MIB component that is inactive
(such as the Hosts component), not present, or
unreachable, or it may have been deleted by software but
not yet removed from memory at the device. An alarm
that is underCreation is in the process of being
conÞgured (possibly by another management station),
and should not be modiÞed until its status is valid; if it
never reaches valid status, it will eventually be removed.
Alarm Variable Indicates the variable that is being watched. You can use
the scroll bar, if necessary, to view the complete name.