def _get_default_metric(self):
return self.__default_metric<EOL>
Getter method for default_metric, mapped from YANG variable /network_instances/network_instance/protocols/protocol/state/default_metric (uint32)

    YANG Description: The default metric within the RIB for entries that are
installed by this protocol instance. This value may
be overridden by protocol specific configuration options.
The lower the metric specified the more preferable the RIB
entry is to be selected for use within the network instance.
Where multiple entries have the same metric value then these
equal cost paths should be treated according to the specified
ECMP path selection behaviour for the instance