Cambium Networks PTP 820 Series User Manual page 597

Chapter 10: Synchronization
Figure 351 1588 Boundary Clock – Port Parameters – Edit Page
6. In the Admin field, select Enable.
7. In the Master Only field, select from the following options:
o
Yes – The port can only be used as the master port, which means the port acts as a PTP synchronization
source for other nodes.
o
No – The port can be used as either a master port or the slave port. The slave port receives PTP
synchronization input from an external grandmaster clock. The Best Master Clock Algorithm (BMCA)
determines the port's role, based on its determination of which is the best available grandmaster clock.
Only one slave port can exist in a single PTP 820 node at any one time.
8. Optionally, in the Local Priority field, select a value between 1-255. The default value is 128. The Local Priority
value is taken into account when two identical announce messages are received by at least two different
ports. In such a case, the Boundary Clock mechanism selects the slave port based on the best (lowest) Local
Priority.
9. In the Destination Mac Address field, select a MAC address for multicast re-transmission of PTP packets.
Options are:
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Configuring 1588 Boundary Clock