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Specifying the protocol for encapsulating PTP messages as
UDP (IPv4)
PTP messages can be encapsulated in IEEE 802.3/Ethernet packets or UDP packets.
To configure the protocol for encapsulating PTP messages as UDP (IPv4):
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Layer 2 Ethernet
interface view.
interface
interface-type
interface-number
N/A
3.
Configure the protocol for
encapsulating PTP
messages as UDP (IPv4).
ptp transport-protocol udp
By default, PTP messages are
encapsulated in IEEE
802.3/Ethernet packets.
Specifying the source IP address for UDP packets
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
ptp
source
ip-address
By default, no source IP address
is specified for PTP messages
encapsulated in UDP packets.
Setting the delay correction value
PTP performs time synchronization based on the assumption that the delays in sending and
receiving messages are the same. However, this is not practical. If you know the offset between the
delays in sending and receiving messages, you can configure the delay correction value for more
accurate time synchronization.
To configure the delay correction value for every clock node:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Layer 2 Ethernet
interface view.
interface
interface-type
interface-number
N/A
3.
Set delay correction value.
ptp
asym-correction
{
minus
|
plus
}
value
Optional.
The default is 0 nanoseconds,
which means delay correction is
not performed.
Setting the cumulative offset between the UTC and TAI
The time displayed on a device is based on the Coordinated Universal Time (UTC). There is an offset
between UTC and TAI (International Atomic Time in English), which is made public periodically. This
task allows you to adjust the offset between the UTC and TAI on the device. It is applicable only to
the GM.
To set the cumulative offset between the UTC and TAI:
