@classmethod
def get(cls, top, parent=None):
    """
        This will get all the loopback interfaces on the switch

        :param parent:
       :param top: the topSystem level json object
       :returns: list of loopback
        """
    cls.check_parent(parent)
    result = []
    data = top.get_class('l3LbRtdIf')
    for obj in data:
        lbif = cls()
        if 'l3LbRtdIf' in obj:
            lbif._populate_from_attributes(obj['l3LbRtdIf']['attributes'])
            lbif._get_oper_st(obj['l3LbRtdIf']['attributes']['dn'], top)
        result.append(lbif)
        if parent:
            lbif._parent = parent
            lbif._parent.add_child(lbif)
    return result
