According to vSphere Basic System Administration, section SNMP and vSphere, VMWARE-VC-EVENT-MIB, vCenter can send out SNMP traps for diagnostic purposes
a) on request
b) on a periodic basis
"The vCenter Server SNMP agent sends this trap when vCenter Server starts or is restarted, or when a test notification is requested. vCenter Server can be configured to send this trap periodically at regular intervals."
Does anyone know how to do so? The manual says it can be done, but doesn't explain how to (neither the on demand nor the periodic one). I know that I can manually trigger an alarm (e.g. on VM power state), but now that I stumbled upon the test trap description it seems as if there should be a more straight-forward way (and even one which can be used to periodically verify the vCenter trap handling).