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Catalyst 3750 SwitchSoftware Configuration Guide
OL-8550-09
Chapter33 Configuring Embedded Event Manager
Understanding Embedded Event Manager
Note The stack member switch does not generate events and does not support memory threshold notifications
or IOSWdSysmon event detectors.
•Application-specific event detector—Allows any EEM policy to publish an event.
•IOS CLI event detector—Generates policies based on the commands entered through the CLI.
•Generic Online Diagnostics (GOLD) event detector—Publishes an event when a GOLD failure
event is detected on a specified card and subcard.
•Counter event detector—Publishes an event when a named counter crosses a specified threshold.
•Interface counter event detector— Publishes an event when a generic Cisco IOS interface counter
for a specified interface crosses a defined threshold. A threshold can be specified as an absolute
value or an incremental value. For example, if the incremental value is set to 50 an event would be
published when the interface counter increases by 50.
This detector also publishes an event about an interface based on the rate of change for the entry and
exit values.
•None event detector—Publishes an event when the event manager run CLI command executes an
EEM policy. EEM schedules and runs policies on the basis on an event specification within the
policy itself. An EEM policy must be manually identified and registered before the event manager
run command executes.
•Online insertion and removal event detector—Publishes an event when a hardware insertion or
removal (OIR) event occurs.
•Resource threshold event detector—Generates policies based on global platform values and
thresholds. Includes resources such as CPU utilization and remaining buffer capacity. This only to
the master switch.
•Remote procedure call (RPC) event detector—Invokes EEM policies from outside the switch over
an encrypted connecting using Secure Shell (SSH) and uses Simple Object Access Protocol (SOAP)
data encoding for exchanging XML-based messages. It also runs EEM policies and then gets the
output in a SOAP XML-formatted reply.
•SNMP event detector—Allows a standard SNMP MIB object to be monitored and an event to be
generated when
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The object matches specified values or crosses specified thresholds.
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The SNMP delta value, the difference between the monitored Object Identifier (OID) value at
the beginning the period and the actual OID value when the event is published, matches a
specified value.
•SNMP notification event detector—Intercepts SNMP trap and inform messages received by the
switch. The event is generated when an incoming message matches a specified value or crosses a
defined threshold.
•Syslog event detector—Allows for screening syslog messages for a regular expression pattern
match. The selected messages can be further qualified, requiring that a specific number of
occurrences be logged within a specified time. A match on a specified event criteria triggers a
configured policy action.
•Timer event detector—Publishes events for
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An absolute-time-of-day timer publishes an event when a specified absolute date and time
occurs.
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A countdown timer publishes an event when a timer counts down to zero.