The MIB Browser utility of OpUtils software enables you to load and browse MIBs and perform SNMP operations. With this tool you can perform all SNMP-related operations like GET, GET-NEXT,SET etc. The above SNMP operations can be performed on the specified agent. For more details read the following sections.
MIB Browser allows you to load MIBs directly. Whenever the files are loaded, they are compiled and then loaded.
To load a MIB
Click the Settings -> Tools tab -> MIB Browser.
Select a MIB from the Select MIB combo box. The Selected MIB gets loaded below.
If you want to load a MIB that is not available by default, click the Add MIB button. In the Add MIB dialog that appears, use the Browse button to choose the MIB, and click the Add button. If a MIB has any dependent MIBs ensure that all the dependent MIBs are also added to avoid errors. Click Close to close the dialog. Check if the MIB that is loaded is displayed in the list box.
Retrieving the value of an SNMP variable using GET operation
The operation is used by the SNMP manager applications to retrieve one or more values from the managed objects maintained by the SNMP agent. The applications typically perform an SNMP GET request by providing the host name of the agent and one or more OIDs along with the specific instance of the OID. The agent responds with a return value or with an error.
The SNMP GET operation is normally used to query the scalar variables in a MIB. Each scalar variable is identified by its OID and its instance. The instance is used to identify the specific instance of the scalar variable. It is specified by appending a ".0" to its OID. To proceed
Load the MIB file.
Select the desired node in the MIB tree.
Click the Get button.
This operation gets all objects under the selected MIB object, or the specific object if the MIB instance is specified.
Retrieving values of multiple SNMP variables using GETNEXT operation
The operation retrieves the value of the next OID in the tree. The GETNEXT operation is particularly useful for retrieving the table data and also for variables that cannot be specifically named. It is used for traversing the MIB tree.To proceed
Follow the steps as given for retrieving the value of an SNMP Variable.
Click the Get Next button.
This operation gets the value of the next object, under the selected MIB variable.