Ptp Version 2 (Tc) (Ms20/Ms30, Powermice) - Hirschmann RS20 Reference Manual

Time
Parameter Meaning
V1 Hardware Some devices from other manufac-
Compatibility turers require PTP messages of
specific length.
If the UDP/IPv4 network protocol is
selected and the function is active,
the device extends the PTP mes-
sages.
Asymmetry Correction of the runtime asymme-
try in [ns]. A runtime measurement
value of x ns corrupted by asymmet-
rical transmission values corre-
sponds to an asymmetry of x*2 ns
Table 23: Port Dialog Version 2(BC)
3.2.4 PTP Version 2 (TC)
(MS20/MS30, PowerMICE)
In strongly cascaded networks in particular, the transparent clock (TC) intro-
duced in PTP Version 2 provides a noticeable increase in precision.
The combination with the P2P runtime mechanism (simultaneous runtime
measurement at all ports) enables "seamless" reconfiguration.
The following settings enable you to also use the TC for Unicast PTP
messages:
– Selecting the E2E mechanism
– Syntonize disabled
– PTP Management disabled.
You select the PTP version you want to use in the Time:PTP:Global
dialog.
RM Web L2E
Release 5.0 04/09
3.2 PTP (IEEE 1588)
Value range
auto, on, off
Default setting
auto
65