old_contents: from oslo.config import cfg
  
  """ Configuration for the datacom switch.
  
  The options are used to locate datacom switches and identify
  openstack. The dm_username and dm_password are the credentials
  and the dm_host is the IP for the switch. The region name is the
  identifier for the controller.
  """
  
  DATACOM_DRIVER_OPTS = [
      cfg.StrOpt('dm_username',
                 default='',
                 help=_('(required) Username for the dm connection.'
                        'If not set, the identification will fail.')),
      cfg.StrOpt('dm_password',
                 default='',
                 secret=True,  # do not expose value in the logs
                 help=_('(required) Password for the dm connection.'
                        'If not set, the identification will fail.')),
      cfg.StrOpt('dm_host',
                 default='',
                 help=_('(required) IP to be connected to..'
                        'If not set, the identification will fail.')),
      cfg.StrOpt('region_name',
                 default='RegionOne',
                 help=_('If multiple OpenStack/Neutron controllers are involved,'
                        'region_name identifies each one. Most of the times the '
                        'value will be "RegionOne", which is the default value '))
  ]
  
  
  def setup_config():
      cfg.CONF.register_opts(DATACOM_DRIVER_OPTS, "ml2_datacom")
  
new_contents: from oslo.config import cfg
  
  """ Configuration for the datacom switch.
   
  The options are used to locate datacom switches and identify
  openstack. The dm_username and dm_password are the credentials
  and the dm_host is the IP for the switch. The region name is the
  identifier for the controller.
  """
  
  DATACOM_DRIVER_OPTS = [
      cfg.StrOpt('dm_username',
                 default='',
                 help=_('(required) Username for the dm connection.'
                        'If not set, the identification will fail.')),
      cfg.StrOpt('dm_password',
                 default='',
                 secret=True,  # do not expose value in the logs
                 help=_('(required) Password for the dm connection.'
                        'If not set, the identification will fail.')),
      cfg.StrOpt('dm_host',
                 default='',
                 help=_('(required) IP to be connected to..'
                        'If not set, the identification will fail.')),
      cfg.IntOpt('dm_port',
                 default=443,
                 help=_('Port to be connected to, default is 443.')),
      cfg.StrOpt('dm_method',
                 default='https',
                 help=_('Connection method (default is https)')),
      cfg.StrOpt('region_name',
                 default='RegionOne',
                 help=_('If multiple OpenStack/Neutron controllers are involved,'
                        'region_name identifies each one. Most of the times the '
                        'value will be "RegionOne", which is the default value '))
  ]
  
  def setup_config():
      cfg.CONF.register_opts(DATACOM_DRIVER_OPTS, "ml2_datacom")
  
subject: Add port and method to config file.