Using the SNMP Trap Monitor

To configure an instance of the SNMP Trap Passive Monitor:

  1. Go to the Passive Monitor Library:
    • From the web interface, click GO. The GO menu appears.
    • If the WhatsUp section is not visible, click WhatsUp. The WhatsUp section of the GO menu appears.
    • Select Configure > Passive Monitor Library.

      - or -

      From the main menu of the console, select Configure > Passive Monitor Library.

  2. In the Passive Monitor Library, do one of the following:
    • Click New. The Select Passive Monitor Type dialog appears.
    • Select SNMP Trap from the list, then click OK. The SNMP Passive Monitor Instance dialog appears.

      - or -

    • Select an existing SNMP Trap from the list, then click Edit. The monitor properties dialog appears.
  3. Enter or select the appropriate information in the following fields.
    • Name. The name of the monitor as it appears in the Passive Monitor Library.
    • Description. The description of the monitor as it appears in the Passive Monitor Library.
    • Enterprise/OID. Use the browse (...) button to select the desired object identifier (OID) from the Enterprise section of the MIB. This OID is used to identify traps for a particular application. If you specify the OID rather than select it from the MIB, then an incoming trap only matches this rule if the trap enterprise field begins with the OID that you have specified. If you are unsure of the OID to use, or don't care to be specific, you can leave this field blank and it is ignored.

      Note: This option is only available if Generic Type is set to 6-EnterpriseSpecific.

    • Generic Type (Major). Select the generic type number to be used in this monitor. Each trap has a generic type number. This number is part of the rule that determines the matching criteria for an incoming trap. For more information, see Common SNMP Traps in the Help.

      Note: The definitions of 0 through 6 are not WhatsUp Gold definitions, but come from the SNMP specifications.

    • Specific Type (Minor). Enter a value. This value can be an integer from 0 to 4294967296. If you want to ignore this field, select "Any".

      Note: This option is only available if Generic Type is set to 6-EnterpriseSpecific.

    • Payload. Click Add to view the Expression Editor where you can create an expression, test it, and compare it to potential payloads. After creating an expression, click OK to insert that string into the list under Match On.

      Note: If you have multiple payload Match On expressions, they are linked by OR logic, not AND logic. If you have two expressions, one set to "AB" and the other to "BA", it will match against a trap containing any of the following: "AB" or "BA" or "ABBA".

      Tip: Select an expression from the list to Edit it or Remove it from the list.

  4. Click OK to save changes.