This object identifies the default administrative port type, to be used in conjunction with the operational port type denoted by agentPortType. This object represents the administratively-configured type of the MAU. If auto-negotiation is not enabled or is not implemented for this MAU, the value of this object determines the operational type of the MAU. In this case, a set to this object will force the MAU into the specified operating mode. If auto-negotiation is implemented and enabled for this MAU, the operational type of the MAU is determined by auto-negotiation, and the value of this object denotes the type to which the MAU will automatically revert if/when auto-negotiation is later disabled. The valid values for this object are: dot3MauType10BaseTHD dot3MauType10BaseTFD dot3MauType100BaseTXHD dot3MauType100BaseTXFD dot3MauType100BaseFXFD dot3MauType1000BaseSXFD dot3MauType1000BaseTFD dot3MauType1000BaseXFD agentPortType2pt5GigBaseX dot3MauType10GigBaseX agentPortType20GigBaseX agentPortType25GigBaseX dot3MauType40GbaseCR4 dot3MauType100GbaseCR10