xylnatmClockingxCtrlSrcLevel 1.3.6.1.4.1.800.2.9.1.17.1.1.2

This object identifies which source entry type for this row in the table. Primary is the preffered source, if the primary source clock is not available, then the secondary source (if configured) will be used to drive the bus line. If the primary and secondary are both configured but not available, then the tertiary (if configured) source will be used. If no clock sources are available for this bus line, then all port configured to use the bus line for their local (transmit) clocking, then those ports will switch to their local on-board oscillator.