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Configuring 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 to the GM only.
To configure the cumulative offset between the UTC and TAI:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure the cumulative
offset between the UTC and
TAI.
ptp
utc
offset
utc-offset
The default is 0 seconds.
Configuring the correction date of the UTC
This task allows you to adjust the UTC at the last minute (23:59) of the specified date.
To configure the correction date of the UTC:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure the correction date
of the UTC.
ptp
utc
{
leap59-date
|
leap61-date
}
date
By default, the correction date of
the UTC is not configured.
This command takes effect only on
the GM.
Configuring the parameters of the Bits clock
Clock nodes in a PTP domain exchange announce messages through BMC to elect a GM. They compare
the parameters in the announce messages in the following sequence: priority 1, time class, time accuracy,
and priority 2. If all these parameters are the same, the clock node with a smaller port ID (consisting of
clock number and port number) wins.
To configure the clock parameters
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Configure priority 1 of the
clock.
ptp
priority
clock-source
{
bits1
|
bits2
|
local
}
priority1
pri1-value
Optional.
The default is 128.
3.
Configure the parameters of
the Bits clock.
ptp clock-source
{
bits1
|
bits2
}
{
accuracy
acc-value
|
class
class-value
|
time-source
ts-value
}
By default, the time accuracy is
254, the time class is 248, and the
attribute value is 160 for the Bits
clock.
4.
Configure the time accuracy
of the Bits clock.
ptp clock-source
{
bits1
|
bits2
}
accuracy
acc-value
Optional.
The default is 254.
Summary of Contents for 5920
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