Ptp (Ieee 1588) - Hirschmann RS20 Reference Manual

Time

3.3 PTP (IEEE 1588)

Precise time management is required for running time-critical applications via
a LAN.
The IEEE 1588 standard with the Precision Time Protocol (PTP) describes a
procedure that determines the best master clock in a LAN and thus enables
precise synchronization of the clocks in this LAN.
Devices without PTP hardware support

Devices without PTP hardware support, which only have ports absent a
time stamp unit, support the PTP simple mode. This mode gives a less
accurate division of time.
With these devices

enable/disable the PTP function in the PTP Dialog,

select PTP mode in the PTP Dialog.
– Select v1-simple-mode if the reference clock uses PTP
Version 1.
– Select v2-simple-mode, if the reference clock uses PTP
Version 2.
Note: In the simple mode a device synchronizes itself with PTP
messages received. This mode provides a precision comparable to SNTP
absent other functions, such as PTP management or runtime measuring.
If you want to transport PTP time accurately through your network, only
use devices with PTP hardware support on the transport paths.
RM GUI L2E
Release 8.0 05/2013
3.3 PTP (IEEE 1588)
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