Slave loosing lock after ~20-30 hours when synchronized to GM
Anders reports that in his ~1000km WR link once in a while Slave looses lock:
- slave has clearly lost PLL lock. But it is not completely
free-running, rather it drifts by some small amount such as +/-4ns/s or
similar. However the slave PTP software shows TRACK_PHASE, so it thinks
it is locked and everything is OK.
- after the event I see that the GM input-clock and GM look OK, i.e. no
permanent loss of lock on the GM side.