In addition to an unspecified duplex mode setting, the following properties also determine whether a network adapter is monitored for utilization:
If the network adapter is unmanaged, it is not monitored.
If the network adapter uses the description of “*Vlan” for a Cisco device, it is not monitored.
If the interface is a subinterface, it is not monitored unless subinterface performance analysis is enabled, which is explained in the Generic Interface/Port Performance setting or the Ethernet Interface/Port Performance setting. The VMware Smart Assurance IP Management Suite Configuration Guide describes these settings.