def _set_circuit_type(self, v, load=False):
    """
    Setter method for circuit_type, mapped from YANG variable /isis_state/interface_brief/isis_intf_brief/circuit_type (isis-circ-type)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_circuit_type is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_circuit_type() directly.

    YANG Description: Type of ISIS Circuit
    """
    if hasattr(v, "_utype"):
      v = v._utype(v)
    try:
      t = YANGDynClass(v,base=RestrictedClassType(base_type=unicode,                                     restriction_type="dict_key",                                     restriction_arg={u'is-circ-lan': {'value': 2}, u'is-circ-ptpt': {'value': 1}, u'is-circ-unknown': {'value': 0}},), is_leaf=True, yang_name="circuit-type", rest_name="circuit-type", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, namespace='urn:brocade.com:mgmt:brocade-isis-operational', defining_module='brocade-isis-operational', yang_type='isis-circ-type', is_config=False)
    except (TypeError, ValueError):
      raise ValueError({
          'error-string': """circuit_type must be of a type compatible with isis-circ-type""",
          'defined-type': "brocade-isis-operational:isis-circ-type",
          'generated-type': """YANGDynClass(base=RestrictedClassType(base_type=unicode,                                     restriction_type="dict_key",                                     restriction_arg={u'is-circ-lan': {'value': 2}, u'is-circ-ptpt': {'value': 1}, u'is-circ-unknown': {'value': 0}},), is_leaf=True, yang_name="circuit-type", rest_name="circuit-type", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, namespace='urn:brocade.com:mgmt:brocade-isis-operational', defining_module='brocade-isis-operational', yang_type='isis-circ-type', is_config=False)""",
        })

    self.__circuit_type = t
    if hasattr(self, '_set'):
      self._set()