Users Guide
Alarms | Alarms, Events, and Automation
290 OMNM 6.5.3 User Guide
Parent/Child Alarm Correlation: Alarm Details Panel
Like many other items managed by OpenManage Network Manager, the Alarms portlet has a
Details panel (see
Connected Devices
on page 191, for example). In addition to the items
mentioned above, the Alarm Details also have a
Correlations
panel.
Alarm parent/child correlation lets you correlate one alarm to another so you can conceal the child
alarm(s) in standard alarm views. You can also correlate one alarm to block resolution of another. In
effect, parent alarms conceal (or block) correlated child alarms. This can confine alarms that
appear or resolve to those requiring action only.
The
Correlations
panel lists the following:
Correlation Details
—The current correlation state of the current alarm. Attributes include:
Correlation Date, Correlated By,
and
Correlation State
along with information about the
correlated, parent alarm. In addition to manually removing the correlation, you can right-click
in this component to navigate to the details of the correlated alarm.
Caused Alarm(s)
—The alarms caused by this alarm. Right-click to add alarms to the table or to
remove them.
Blocked Alarm(s)
— The alarms that are currently blocked from resolution by this alarm. Right-
click add alarms to the table (and remove them).
When adding a correlated alarm, you can select any alarm that does not already have a parent
alarm, then click
Done
to make it a child alarm.
When you correlate correlating one alarm to another, OpenManage Network Manager understands
their correlation state as either
Caused By
or
Blocked By
. By default, the correlation state is
To p
Level Alarm
.
OpenManage Network Manager does not support multiple correlation states so one alarm cannot
be both
Caused By
and
Blocked By
. However, a parent alarm can have both
Caused By
and
Blocked
By
child alarms. A single alarm can also be both parent and child. Consider, for example, an alarm
that causes several other alarms but is
Blocked By
another alarm. Its parent alarm would appear in
the
Correlation
Details
panel too.
Alarms correlated as
Caused By
clear automatically when the parent alarm clears.
Blocked by
alarms
status as child alarms disappears when their parent alarm clear. This means they become visible
again within the alarm view's.