Configuring Snmp Library Extensions - Cisco Catalyst 2960 series Configuration Manual

How to Write EEM Policies Using the Cisco IOS CLI
match is one two three
submatch 1 is one

Configuring SNMP Library Extensions

Depending on your release, the SNMP Library Extensions feature allows you to perform the following
configurations.
Prerequisites
To use this feature, you must be running Cisco IOS Release 12.4(22)T or a later release.
SNMP Get and Set Operations
The SNMP Library Extensions feature extends the EEM applet action info and Tcl
sys_reqinfo_snmpcommands to include functionality for SNMP get-one, get-next, getid and set-any operations.
SNMP Get Operation
The SNMP event manager performs the SNMP get operation to retrieve one or more variables for the managed
objects. Using the action info type snmp oid get-typeand action info type snmp getidcommands, you can
configure the SNMP event manager to send an SNMP get request by specifying the variables to retrieve, and
the IP address of the agent.
For example, if you want to retrieve the variable with the OID value of 1.3.6.1.2.1.1.1, you should specify
the variable value, that is 1.3.6.1.2.1.1.1. If the specified values do not match, a trap will be generated and an
error message will be written to the syslog history.
The action info type snmp oid get-type command specifies the type of the get operation to be performed.
To retrieve the exact variable, the get operation type should be specified as exact. To retrieve a lexicographical
successor of the specified OID value, the get operation type should be set to next.
The table below shows the built-in variables, in which the values retrieved from SNMP get operation are
stored.
Table 161: Built-in Variables for action info type snmp oid Command
Built-in Variable
_info_snmp_oid
_info_snmp_value
GetID Operation
The action info type snmp getid command retrieves the following variables from the SNMP entity:
• sysDescr.0
• sysObjectID.0
• sysUpTime.0
• sysContact.0
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
1724
Description
The SNMP object ID.
The value string of the associated SNMP data
element.