code: def map_pvc(self, port1, vpi1, vci1, port2, vpi2, vci2):
          
  
          if port1 not in self._nios:
              return
  
          if port2 not in self._nios:
              return
  
          nio1 = self._nios[port1]
          nio2 = self._nios[port2]
  
          yield from self._hypervisor.send('atmsw create_vcc "{name}" {input_nio} {input_vpi} {input_vci} {output_nio} {output_vpi} {output_vci}'.format(name=self._name,
                                                                                                                                                         input_nio=nio1,
                                                                                                                                                         input_vpi=vpi1,
                                                                                                                                                         input_vci=vci1,
                                                                                                                                                         output_nio=nio2,
                                                                                                                                                         output_vpi=vpi2,
                                                                                                                                                         output_vci=vci2))
  
          log.info('ATM switch "{name}" [{id}]: VCC from port {port1} VPI {vpi1} VCI {vci1} to port {port2} VPI {vpi2} VCI {vci2} created'.format(name=self._name,
                                                                                                                                                  id=self._id,
                                                                                                                                                  port1=port1,
                                                                                                                                                  vpi1=vpi1,
                                                                                                                                                  vci1=vci1,
                                                                                                                                                  port2=port2,
                                                                                                                                                  vpi2=vpi2,
                                                                                                                                                  vci2=vci2))
  
          self._active_mappings[(port1, vpi1, vci1)] = (port2, vpi2, vci2)
docs: Creates a new Virtual Channel connection (unidirectional).
  
          :param port1: input port
          :param vpi1: input vpi
          :param vci1: input vci
          :param port2: output port
          :param vpi2: output vpi
          :param vci2: output vci