hwdot1dStpPortPointToPoint 1.3.6.1.4.1.43.45.1.2.23.1.6.1.5.1.3

It is the administrative value indicates whether the port can be connected to a point-to-point link or not. If the value is 'auto', the operative value of a point-to-point link state is determined by device itself, and can be read from hwdot1dStpOperPortPointToPoint.