Firmware with Rapid Spanning Tree: The value of this object is equal to the status of the object dot1dStpPortEnable. When Rapid Spanning Tree is operating this objects handles the behaviour of the port regarding bridge protocol data units (BPDUs). Set this object to disable(1) the interface doesn't send BPDUs when Rapid Spanning Tree operation is enabled. BPDUs will be send by this interface if the object is set to enable(2). Firmware with Spanning Tree: When spanning tree has been activated (see object flSwitchCtrlSpanTree) this object handles the behaviour of the port regarding bridge protocol data units (BPDUs). Set this object to disable(1) the interface doesn't send BPDUs when Spanning Tree operation is enabled. BPDUs will be send by this interface if the object is set to enable(2). When the port stp status has been set to disable(1) the port uses fast forwarding to change from the port state disabled into the port state forwarding immediately (see object dot1dStpPortState of the bridge mib (rfc 1493).