Defining an SNMP monitor requires the name or IP address of the machine to be monitored, as well as the connection port. The standard access port for SNMP parameters is port 161.

The connection is made through an SNMP community. The community name is required for authentication and to allow NeoLoad to retrieve the SNMP counter values. The default community name is "public".

You may create a new monitor either using the new monitored machine wizard, or from an existing monitored machine.

Adding SNMP counters is done via a dedicated pane. Each counter is defined by an OID.

To choose the OID, an MIB may be loaded. A MIB is an information base containing all the OIDs defined for an SNMP component type. For example, router manufacturers such as Cisco provide MIBs containing the OIDs monitoring open or waiting connections.

To load a MIB, click on the "Load MIB" button, then navigate to the MIB file. The OID tree for the MIB is then displayed in the left-hand pane. Click on the nodes to obtain a description of the OID.

A MIB may be defined by OIDs present in other MIBs. For the MIB to load correctly, these other MIBs must be available in the same directory.

An OID also may be entered directly in the "SNMP commands" box.

Once the OID has been specified, several commands may be executed that send requests to the server: