Spectracom SecureSync User Reference Manual page 429

1.
2.
Configuration as a Master Clock
To configure the IEEE-1588 (PTP) Module as a Master Clock, perform these steps:
General configuration steps:
In order to operate properly as a Master Clock, SecureSync must be synchronized to a non-PTP
reference. Confirm that the chosen reference transmits the following information (as reported by
the Time Properties on the PTP Status page, under the Advanced tab):
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From the PTP Status window under the Main tab, check that the Transmission/Clock
Mode is a Slave mode and that multicast/unicast/minicast state is correct.
Check that the Ethernet Transport Protocol set for the Slave Clock is the same as the
Transport Protocol of the Master Clock to which the Slave Clock must be synchronized
with. (Check the Transport Protocol on the PTP Edit window, under the Ethernet tab.)
Check that the Domain Numbe r set for the Slave Clock is the same as the Domain Num-
ber of the Master Clock to which the Slave Clock must be synchronized with. (Check the
Domain Number on the PTP Status window, under the Main tab.)
From the PTP Status window, under the Advanced tab, check that the Current IP
Address is valid.
From the PTP Edit window under the Advanced tab, check that the Time To Live (TTL) for
PTP packets is compatible with the network.
If in Multicast mode, check that the switches/routers are transparent to multicast frames
From the PTP Status window under the Advanced tab, check that the Clock Class is
"Master, In Sync."
NOTE – If DHCP is enabled and PTP was not successful in obtaining an IP address,
DHCP will need to be restarted to retry. To restart DHCP:
In the PTP Edit window under the Ethernet tab, select the Enable DHCP checkbox.
Click the Submit button at the bottom of the window.
Ensure the PTP port is connected to the network (check the Link Status in the PTP
Status/Network page).
Ensure the PTP port speed is 100 Mb/s (check the Port Speed in the PTP Status page
under the Advanced tab).
Be sure that valid time and 1PPS references are currently selected (go to
MANAGEMENT/OTHER/Time Management ).
5.5 Network Interface Option Cards
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