Spectracom SecureSync User Reference Manual page 407

Top panel settings
Bottom panel: tabs
Main tab settings
CHAPTER •
5 SecureSync User Reference Guide Rev. 18
Enable PTP : Enables/Disables PTP. Check the box to enable PTP. Uncheck it to disable
PTP.
Profile — offers a choice of:
Default (incl. Enterprise)
Telecom
Main : These settings pertain to network connectivity.
Contract : These settings pertain to the unicast contract.
Advanced : These setting pertain to time Sync information.
Domain Number : Sets the current PTP Domain Number, as defined in IEEE Std 1588-
2008 Section 7.1
Clock Mode : PTP has two ways to transmit the initial T1 timestamp of the Sync packet
transmission from the Master to the Slave:
One-Step Master: The Sync packet is timestamped, then the timestamp is inserted
into the Sync packet in real-time, as it is transmitted.
Two-Step Master : The Sync packet is timestamped, but the timestamp value in the
Sync packet is ignored. The actual T1 value is transmitted in a "Follow-Up" packet
after the Sync packet.
NOTE –
The default mode is one-step.
Enable DHCP : This is a checkbox to enable or disable the delivery of IP addresses from a
DHCP Server. The default setting is enabled (the box is checked).
Static IP Address : When a DHCP server is not requested or is requested but not available,
the PTP Module will use this IP address. In the format "#.#.#.#" with no leading zeroes or
spaces, where each '#' is a decimal integer from the range [0,255].
Network Mask : When a DHCP server is not requested or is requested but not available,
the PTP Module will use this Network Mask. In the format "#.#.#.#" with no leading zeroes
or spaces, where each '#' is a decimal integer from the range [0,255].
Default Gateway : When a DHCP server is not requested or is requested but not available,
the PTP Module will use this Default Gateway. In the format "#.#.#.#" with no leading zer-
oes or spaces, where each '#' is a decimal integer from the range [0,255].
PTP Masters must select one mode or the other to operate in.
5.5 Network Interface Option Cards
391