Hirschmann RS20 Reference Manual page 98

Time
Parameters Meaning
Runtime Mechanism for measuring the
Measuring message runtime. Enter the same
Mechanism mechanism for the PTP device
connected to this port.
A PTP slave port measures the
runtime of the entire transmission
path to the master. The device
displays the measured value in the
PTP:Version 2(BC):Global
dialog
The device itself measures the
runtime to all the PTP devices
connected. If a reconfiguration is
performed, this eliminates the need
to determine the runtime again.
For the MACH 104 and MACH
1040 devices:
Such as E2E with the following
characteristics:
 The device only transmits the
PTP slaves' delay queries to the
master, even though these
queries are multicast frames.
In this way, the device relieves
the other clients from
unnecessary multicast queries.
 With changes in the PTP
master-slave topology, the
device relearns the port for the
PTP master as soon as it has
received a frame from another
PTP master.
 If the device does not recognize
a PTP master, it also floods
delay queries received in the
E2E Optimized mode.
For the MACH 104 and
MACH 1040 devices:
The device does not allow runtime
measurement, i.e., it discards
frames received, which are used for
measuring runtime.
Primary Assignment of the clock to a PTPv2
Domain domain.
Network Network protocol for P2P and
Protocol management messages.
Table 54: Function IEEE 1588 / PTPv2 TC
98
(see on page 91 "Global").
3.3 PTP (IEEE 1588)
Possible values Default setting
E2E (end-to-end):
P2P (peer-to-peer)
E2E Optimized
(end-to-end,
optimized)
Disabled
0-225 0
UDP/IPv4, UDP/IPv4
IEEE 802.3
RM GUI L2E
Release 8.0 05/2013