Understanding Embedded Event Manager
because some problems compromise communication between the switch and the external network
management device. Network availability is improved if automatic recovery actions are performed
without rebooting the switch.
Figure 1-1
and the event subscribers (policies). The event publishers screen events and when there is a match on an
event specification that is provided by the event subscriber. Event detectors notify the EEM server when
an event occurs. The EEM policies then implement recovery based on the current state of the system and
the actions specified in the policy for the given event.
Figure 1-1
Core event publishers
Cisco
IOS
parser
text
CLI
event
detector
See the
deployment.
Event Detectors, page 1-3
•
Embedded Event Manager Actions, page 1-4
•
Embedded Event Manager Policies, page 1-4
•
Embedded Event Manager Environment Variables, page 1-5
•
EEM 3.2, page 1-5
•
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
1-2
shows the relationship between the EEM server, the core event publishers (event detectors),
Embedded Event Manager Core Event Detectors
Syslog
OIR
message
events
queue
SYSLOG
OIR
event
event
detector
detector
EMBEDDED EVENT MANAGER SERVER
EEM Configuration for Cisco Integrated Services Router Platforms Guide
Chapter 1
event
manager run
CLI command
NONE
event
detector
Event
subscribers
Configuring Embedded Event Manager
Hardware
timers
Timer
Counter
event
event
detector
detector
EEM POLICY DIRECTOR
Subscribes to receive events
and implements policy actions
EEM APPLET
EEM SCRIPT
for examples of EEM
OL-25303-03