You can edit a system trap to increase or decrease the severity and enablement of a trap so that traps are either sent out to receivers or withheld.

When the Module, SNMP OID, or SNMP trap enabled column value appears as --, it means that those events have not been allocated a trap OID. Therefore, a trap for these events is not going to be sent out.

A system trap has several columns that list different aspects of a system event.



Event Code

Static event code associated with an event.


Summary describing the event.


Sub component that triggers an event.


Level of an event can be informational, low, medium, major, critical, or high.

By default when the SNMP service is enabled, traps are sent out for only critical and high severity events to highlight the traps that require immediate attention.


Represents the individual OID and this OID is sent out when a system event is raised.

Group notification is enabled by default. When group notifications is enabled, the events or traps under this group show the OID of the group the event or trap belongs to.

For example, group notification OID categorized under configuration group has the OID

SNMP trap enabled

Shows whether sending out of the trap for this event is enabled or disabled.

You can toggle the icon to individually an event or trap enablement. When group notification is enabled, you cannot toggle the trap enablement.


Search terms to filter the system traps.


Verify that the SNMP settings are available. See Configure SNMP Settings.


  1. Log in to the vSphere Web Client.
  2. Select Networking & Security > Networking & Security Inventory > NSX Managers.
  3. Select an NSX Manager IP address.
  4. Select the Manage > System Events tabs.
  5. Select a system event under the System Traps section.
  6. Click the Edit (Edit icon) icon.

    Editing a trap enablement is not allowed when group notification is enabled. You can change the enablement of traps that do not belong to a group.

  7. Change the severity of the system event from the drop-down menu.
  8. If you change the severity from Informational to critical, check the Enable as SNMP Trap checkbox.
  9. Click OK.
  10. (Optional) Click the Enable (Enable icon) icon or Disable (Disable icon) icon in the header to enable or disable sending a system trap.
  11. (Optional) Click the Copy (Copy icon) icon to copy one or more event rows to your clipboard.