Advanced Alarm Configuration 4-13
Alarm Configuration
The fields in the Alarms Watch display include:
Index The index is a number that uniquely identifies each alarm.
Index numbers are user-defined; 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 configured for the alarm.
Sample Indicates whether the sample value to be compared to the
thresholds is an absolute, or total value — that is, the total
value counted for the selected variable during the interval — or
a relative, or delta value — the difference between the value
counted during the current interval and the value counted
during 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 field 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 field 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 configured (possibly by another management
station), and should not be modified 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.
Note that the information provided in this screen is static once it is displayed; for updated
information, click on the Refresh button. Adding or modifying an alarm automatically
updates the list.