This paper studies the performance of the precision time protocol (PTP) of the IEEE 1588 standard for drifting slave frequencies. The error expression for the master time estimate at the n th  slave is analytically derived and demonstrated in simulation runs. We show that single-slave frequency drift is very benign compared to master frequency drift, which is only matched by all slaves drifting.
['Ruxandra Lupas Scheiterer', 'Chongning Na', 'Dragan Obradovic', 'Günter Steindl', 'Franz-Josef Goetz']
Synchronization performance of the Precision Time Protocol in the face of slave clock frequency drift