// Finally, a l-sized vector standing for the ports number with the lower level
boost::split(tmp, parameters[3], boost::is_any_of(","));
if (tmp.size() != this->levels_) {
// Finally, a l-sized vector standing for the ports number with the lower level
boost::split(tmp, parameters[3], boost::is_any_of(","));
if (tmp.size() != this->levels_) {