etsysIfMauExtMasterSlaveStatus 1.3.6.1.4.1.5624.1.2.59.1.1.2.1.1

If auto-negotiation is not enabled, the value of this object determines the master/slave state for this MAU. A value of master(1) will force the port to operate as a master. A value of slave(2) will force the port to operate as a slave.