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C H A P T E R
2
Configuring and Managing Embedded Event
Manager Policies
The Cisco IOS XR Software Embedded Event Manager (EEM) functions as the central clearing house for
the events detected by any portion of the Cisco IOS XR Software processor failover services. The EEM is
responsible for detection of fault events, fault recovery, and process reliability statistics in a Cisco IOS XR
Software system. The EEM events are notifications that something significant has occurred within the system,
such as:
•
Operating or performance statistics outside the allowable values (for example, free memory dropping
below a critical threshold).
•
Online insertion or removal (OIR).
•
Termination of a process.
The EEM relies on software agents or event detectors to notify it when certain system events occur. When
the EEM has detected an event, it can initiate corrective actions. Actions are prescribed in routines called
policies
. Policies must be registered before an action can be applied to collected events. No action occurs
unless a policy is registered. A registered policy informs the EEM about a particular event that is to be
detected and the corrective action to be taken if that event is detected. When such an event is detected, the
EEM enables the corresponding policy. You can disable a registered policy at any time.
The EEM monitors the reliability rates achieved by each process in the system, allowing the system to detect
the components that compromise the overall reliability or availability.
This module describes the new and revised tasks you need to configure and manage EEM policies on your
the Cisco ASR 9000 Series Router and write and customize the EEM policies using Tool Command Language
(Tcl) scripts to handle Cisco IOS XR Software faults and events.
For complete descriptions of the event management commands listed in this module, see the
Documents, on page 92
section of this module.
Note
Cisco ASR 9000 Series Aggregation Services Router System Monitoring Configuration Guide, Release 4.2.x
41