rootFolder).searchManagedEntity("HostSystem", hostname);
HostNetworkSystem hns = host.getHostNetworkSystem();
// add a virtual switch
HostVirtualSwitchSpec spec = new HostVirtualSwitchSpec();
spec.setNumPorts(8);
hns.addVirtualSwitch(switchName, spec);
// add a port group
HostPortGroupSpec hpgs = new HostPortGroupSpec();
hpgs.setName(portGroupName);