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

Time
Parameter Meaning
V1 Hardware Some devices from other
Compatibility manufacturers require PTP
messages of specific length.
If the UDP/IPv4 network protocol is
selected and the function is active,
the device extends the PTP
messages.
Asymmetry Correction of the runtime asymmetry
in ns. A runtime measurement value
of x ns corrupted by asymmetrical
transmission values corresponds to
an asymmetry of x·2 ns
Table 24: 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)
introduced 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 will use in the Time:PTP:Global dialog.
RM Web L2E
Release 6.0 07/2010
3.2 PTP (IEEE 1588)
Possible Values
auto, on, off
Default Setting
auto
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