code: def get_port_name_list(self):
          
          command = ovs_vsctl.VSCtlCommand('list-ports', (self.br_name, ))
          self.run_command([command])
          return command.result
docs: Gets a list of all ports on OVS instance.
  
          This method is corresponding to the following ovs-vsctl command::
  
              $ ovs-vsctl list-ports <bridge>