code: def _add_vrfs(self, settings):
          
          for vrf_settings in settings:
              LOG.debug('Adding VRF settings: %s', vrf_settings)
              try:
                  self.speaker.vrf_add(**vrf_settings)
              except RuntimeConfigError as e:
                  LOG.exception(e)
docs: Add BGP VRFs from the given settings.
  
          All valid VRFs are loaded.
          Miss-configured VRFs are ignored and errors are logged.