DELL Version 5.3 User Manual

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Event Definitions | Key Portlets
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Alarm Propagation to Services and Customers: What 
Happens
The following describes the use cases where you Alarm Propagation to services and customers 
occurs. This describes the sequence of events / alarms.
Alarm state must propagate to associated entities for each step and might take some time to reach 
all of them, so matching mentioned below may not be instantaneous, depending on the complexity 
of the associations. This propagation to services and customers occurs through a background 
process, running on regular intervals. 
A resource can have several levels of services that depend on it, and then customers can depend on 
them, and so on. Potentially, several levels of dependency and a large database full of services and 
customers to propagate alarm states can exist, so propagation processing occurs in the background. 
By default, this process runs every 30 seconds, but you can configure this interval by setting the 
com.dorado.assure.propagation.AlarmPropagationInterval
 property. This value 
is in milliseconds. The following...
com.dorado.assure.propagation.AlarmPropagationInterval=60000
sets the interval at 60 seconds. Best practice is to put this property in 
\owareapps\installprops\lib\installed.properties
, so upgrading your Dell 
OpenManage Network Manager package does not overwrite any change you make. After changing 
this property, you must restart the application server for the change to take effect.
NOTE:
Only services associated with the alarmed subcomponents are affected by alarms on the subcomponent, 
not services connected to the rest of the device. You can also override default service affecting alarm 
behavior with an Event Processing Rule. See Event Processing Rules on page 136 for more about them.
A New Alarm Arrives, then...
Service Affecting Alarm Changes Source Alarm State: The new alarm changes the alarm state 
(higher or lower) of the resource that is its source.
Dependencies: If this resource has services or customers that depend on it, the alarm state 
matches for all such deployed, dependent services and their associated customers. Without 
such dependencies, no alarm state changes, besides that of the source.
Parent Resources: The alarm changes the alarm state of a child of the source and the alarm's 
Resource Propagation value is Impacts Subcomponents.
Dependencies: Child equipment matches the top level’s alarm state. All deployed services 
and their related customers depending on this particular resource component match the 
resource component’s alarm state. 
Child Resources: The alarm changes the alarm state of parent of the source and the alarm's 
Resource Propagation value is Impacts Top Level.