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2. Configure the PTP settings.
Display the PTP page of the Configuration section (see page 67). Select your configuration and
click the Save All button to save and apply your settings. The most important PTP settings are:
a. PTP profile (General Settings tab): All PTP devices that should synchronize to each other must
use the same profile.
•
Use the Default E2E or Default P2P profile for industrial environments.
Default P2P (peer-to-peer) can only be used if the switches used in the network support and
are configured for operation as peer-to-peer transparent clocks as defined in
IEEE 1588-2008.
Use Default E2E (end-to-end) if standard switches are used in the network and the higher
synchronization error introduced by these switches is acceptable. The Default P2P profile
and the Power Profile according to IEEE C37.238-2011 will not work with those network
switches.
•
Use the Power systems profile for power utility environments where all devices are known
to use the Power Profile according to IEEE C37.238-2011 (OTMC 100p only).
b. Operation mode (General Settings tab): Always use the one step operation mode unless there
are devices in the network that do not correctly handle one step master clocks.
c. Domain number (Default Settings tab): All PTP devices that should synchronize to each other
must use the same domain number.
d. Transport (Port Settings tab): Select the transport mechanism according to the needs of your
network. All PTP devices that should synchronize to each other must use the same transport
mechanism.
Connection, Access & Initial Setup
25
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