Show Event Manager Policy Registered

Whilst studying EEM I discovered the command  show event manager policy registered it basically shows you the policies you have registered on your device.

When you create a policy it just needs and event and an action and it will self register.

Lets create a simple script that will look for a command being typed onto the CLI and then action on it.

This policy will monitor for anyone typing router ospf, and then if they do, will not action the command and then put up a syslog message saying No OPSF here!

Let’s break this down line by line

1. First  you have to define an applet – event manager applet OSPF
2. Next  you define an event, in this case we are matching a cli pattern of router os* so basiclaly anything starting router os
The next two command are very important from the cli options
no   Policy and CLI will run asynchronously
yes  Run policy and the result determines whether to run CLI
Basically if you put no the command will not run, if  you put yes the command will run

3. When the cli pattern is matched a syslog message will be generated

To check what EEM scripts  you have registered on your device you enter the command
show event manager policy registered
the output can be seen above