Embedded Event Manager Environment Variables - Cisco WS-CBS3032-DEL Software Configuration Manual

Chapter 34 Configuring Embedded Event Manager
Cisco enhancements to TCL in the form of keyword extensions facilitate the development of EEM
policies. These keywords identify the detected event, the subsequent action, utility information, counter
values, and system information.
For complete information on configuring EEM policies and scripts, see the Cisco IOS Network Management
Configuration Guide, Release 12.4T.

Embedded Event Manager Environment Variables

EEM uses environment variables in EEM policies. These variables are defined in a EEM policy tool
command language (TCL) script by running a CLI command and the event manager environment
command.
User-defined variables
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Cisco-defined environment variables and Cisco system-defined environment variables might apply to
one specific event detector or to all event detectors. Environment variables that are user-defined or
defined by Cisco in a sample policy are set by using the event manager environment global
configuration command. You must defined the variables in the EEM policy before you register the
policy.
For information about the environmental variables that EEM supports, see the Cisco IOS Network
Management Configuration Guide, Release 12.4T.
EEM 3.2
EEM 3.2 is supported in Cisco IOS Release 12.2(52)SE and later and introduces these event detectors:
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OL-13270-06
Defined by the user for a user-defined policy.
Cisco-defined variables
Defined by Cisco for a specific sample policy.
Cisco built-in variables (available in EEM applets)
Defined by Cisco and can be read-only or read-write. The read-only variables are set by the system
before an applet starts to execute. The single read-write variable, _exit_status, allows you to set the
exit status for policies triggered from synchronous events.
Neighbor Discovery—Neighbor Discovery event detector provides the ability to publish a policy to
respond to automatic neighbor detection when:
a Cisco Discovery Protocol (CDP) cache entry is added, deleted, or updated.
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a Link Layer Discovery Protocol (LLDP) cache entry is added, deleted or updated.
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an interface link status changes.
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– an interface line status changes.
Identity—Identity event detector generates an event when AAA authorization and authentication is
successful, when failure occurs, or after normal user traffic on the port is allowed to flow.
Mac-Address-Table—Mac-Address-Table event detector generates an event when a MAC address is
learned in the MAC address table.
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
Understanding Embedded Event Manager
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