proc StopDeviceGroupNgpf { deviceGroupName } {
    foreach topology [ixNet getList [ixNet getRoot] topology] {
	foreach deviceGroup [ixNet getList $topology deviceGroup] {
	    set currentDgName [ixNet getAttribute $deviceGroup -name]
	    if {[regexp -nocase $deviceGroupName $currentDgName]} {
		puts "\nStopDeviceGroup: $currentDgName"
		ixNet exec stop $deviceGroup
		ixNet commit
	    }
	}
    }
}