Owner's Manual

Events, Rules and Actions 813
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Events, Rules and Actions
Overview of Events, Rules and Actions
The following screens let you configure this application to react, according to rules, to internal
events, and implement configured actions. For example, you can configure the application to act
when a backup occurs (and, say, send an e-mail). You can also configure reactions to certain failures.
For example, if pushing a configuration file to a device fails, an event can trigger a rule with an
action to restore the last known good configuration. This provides powerful capabilities.
CAUTION:
Configuring circular or self-referred actions can severely impact this system’s performance.
The following sections describe correlating and configuring events, and their mapped actions.
Terms
The following terms appear throughout the explanations that follow:
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Action —The outcome of the event, after processed by any Event Processing Rules.
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Alarm —Some, but not all, events appear as alarms, notifying users in the Alarm display.
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Correlation —A general term describing the interaction of events. A redundant event that is also
an Alarm can simply increase the Alarm count, for example, rather than creating a new Alarm.
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Event —A message within the Element Management System (EMS). See Event Definitions on
page 825 for a description of configuring these.
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Event Processing Rules —Rules that specify the interaction between events, and any Action
outcome. See Event Processing Rules on page 815, and Actions Manager on page 835
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Reject —When you configure an event to be Reject ed, it goes no further in the EMS.
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Suppress —When you configure an event to be Suppress ed, it appears in the screen described in
Event History on page 832, but nowhere else.
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Message Template —Part of Event Definitions. These are messages to be matched when you
correlate events. See Message Template on page 829.
Some Example Use Cases
• Without any special configurations, when Alarms arrive at the same severity, they increment
the alarm count on the first one that arrives.