Cisco Catalyst 2960 Series, Configuration Manual

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The SNMP event detector and the syslog action commands used in this task are just representing any event
detector and action commands. For examples using other event detectors and action commands, see the
Embedded Event Manager Applet Configuration Examples, on page 1744 .
EEM Environment Variables
EEM environment variables for EEM policies are defined using the EEM
event manager environment
configuration command. By convention, all Cisco EEM environment variables begin with “ _ ” . In order to
avoid future conflict, customers are urged not to define new variables that start with
“
_
”
.
You can display the EEM environment variables set on your system by using the show event manager
environment privileged EXEC command.
For example, you can create EEM policies that can send e-mails when an event occurs. The table below
describes the e-mail-specific environment variables that can be used in EEM policies.
Table 160: EEM E-mail-Specific Environmental Variables
Example Description Environment Variable
The e-mail server
name--Mailservername-- can be in
any one of the following template
formats:
• username:password@host
• username@host
• host
A Simple Mail Transfer Protocol
(SMTP) mail server used to send
e-mail. _email_server
engineering@example.com The address to which e-mail is sent. _email_to
devtest@example.com The address from which e-mail is
sent. _email_from
manager@example.com The address to which the e-mail is
copied. _email_cc
Alphabetical Order of EEM Action Labels
An EEM action label is a unique identifier that can be any string value. Actions are sorted and run in ascending
alphanumeric (lexicographical) key sequence using the label as the sort key. If you are using numbers as labels
be aware that alphanumerical sorting will sort 10.0 after 1.0, but before 2.0, and in this situation we recommend
that you use numbers such as 01.0, 02.0, and so on, or use an initial letter followed by numbers.
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
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How to Write EEM Policies Using the Cisco IOS CLI