Configuration using Web Based Management and Command Line Interface
4.5 The Switch menu
SCALANCE X-300 / X-400
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Configuration Manual, 10/2014, C79000-G8976-C187-22
4.5.20
Precision Time Protocol (PTP) complying with IEEE 1588
Introduction
The Precision Time Protocol (PTP) complying with IEEE 1588v2 allows the time-of-day
synchronization of devices (time slaves) connected to the ports of a SCALANCE X300.
These devices forward the synchronization frames through the network using the
"Transparent Clock" (TC) mechanism. The connection mechanisms "end-to-end" and "peer-
to-peer" are supported.
Note
PTP is supported only by the following devices of the SCALANCE X300 product line:
•
The device X308-2M.
•
All devices of the X300 EEC product group.
•
All devices of the XR300 product group.
•
All devices of the XR300 EEC product group.
Delay request response mechanism
A device in the network takes over the function of the time master (Best Master Clock, BMC)
that sets the reference time for all other devices. The master sends synchronization