Get SNMP Variable

Applies To: Opalis 6.3

The Get SNMP Variable object will query a network device for the value of variable that is assigned to the Management Information Base address that you specify.

You can use the Get SNMP Variable object to retrieve information about a network device to determine if an administrator needs to be notified.

To configure SNMP version 3 security in the client, on the Options menu click SNMP.

Configuring the Get SNMP Variable Object

To configure the Get SNMP Variable object you need to know the IP address of the device as well as the port number, SNMP MIB, SNMP Version, and the credentials required to retrieve the variable. The Opalis OIS.mib file is located in the Support\SNMP directory.

To configure the Get SNMP Variable object

  1. From the Objects pane, drag a Get SNMP Variable object to the active Policy.

  2. Double-click the Get SNMP Variable object icon. The Properties dialog opens.

  3. For information about the settings on the Details tab and the Advanced tab, see the following tables.

  4. For information about the settings on the General tab, the Run Behavior tab, and other tabs if applicable, see Common Tabs.

Details Tab

Element Configuration Instructions

Name or IP address

Type the name of the computer or IP address of the device hosting the MIB variable.

Port

Type port used to communicate with the network device.

MIB

Type the MIB identifier of the variable whose value you want to retrieve.

SNMP Version

Select the SNMP version to use when connecting to the network device.

Community string/User name

If you selected the SNMPv1 or SNMPv2c option from the SNMP Version drop-down list, the Community string box appears. Type the community string that will be used to authenticate against the network device. The community should have rights of Read only or higher.

If you selected SNMPv3 option from the SNMP Version drop-down list, the User name and Context boxes appear. Specify the name of the user whose credentials will be used to authenticate the operator. The list of available users is found on the Options > SNMP menu.

This element is case-sensitive.

Context

Type the context that the user specified in the User name box belongs to. You can only specify this option when SNMPv3 is selected from the SNMP Version drop-down list.

AdvancedTab

Element Configuration Instructions

Timeout

Type the number of seconds the Get SNMP Variable will wait for a response from the network device. If the operation times out, then it will attempt to retry the action. The number of retries is specified in the Retry box.

Retry

Type the number of times to attempt to retrieve the SNMP variable

Get SNMP Variable Published Data

The following table lists the element names and descriptions for the data published by this object. For information about the published data elements that are common to all objects, see Policy Workflow Rules.

Element Name Description

MIB identifier

The MIB identifier of the variable that was retrieved.

MIB value

The value of the variable that was retrieved.

Device IP address

The IP address of the device where the variable was retrieved.

Timeout

The timeout period specified in the Get SNMP variable operator interface.

Retry attempts

The number of attempts made to retrieve the SNMP Variable.

SNMP Version

The SNMP version that was specified to retrieve this variable. This value can be SNMPv1, SNMPv2c, or SNMPv3.

Community string

The community string that was used to authenticate against this SNMP variable.

Request port

The port used to communicate to the SNMP device.