def CreateTopologyNgpfHlPy(topology_name='Topology', ports=''):
    ''' port_handle format = 12/1 '''

    print '\nCreateTopologyNgpfHlPy'
    status = ixia_ngpf.topology_config(
        topology_name = topology_name,
        port_handle = ports
        )
    
    if status['status'] != '1':
        return 1

    # /topology:1
    topology_handle = status['topology_handle']
    return topology_handle