stgNewCfgDefaultCfg 1.3.6.1.4.1.11.2.3.7.11.33.5.2.2.1.3.2.1.3

Setting the value to default-config(1) will set the default configuration as recommended by IEEE 802.1D for a particular Spanning Tree Group. default-config (1) is always returned When read, but it does not mean anything.