Hirschmann GREYHOUND GRS1020, Справочное руководство

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Synchronizing the system time in the network
9.1 Basic settings
107
UM Config GRS
Release 8.0 09/2019
9.1.1 Setting the time
When no reference time source is available to you, you have the option to set the time in the device.
After a cold start or reboot, if no real-time clock is available or the real-time clock contains an invalid
time, then the device initializes its clock with January 1, 00:00h. After the power supply is switched
off, the device buffers the settings of the real-time clock up to 24 hours.
Alternatively, you configure the settings in the device so that it automatically obtains the current
time from an SNTP server.
Perform the following steps:

Open the Time > Basic Settings dialog.

The System time (UTC) field displays the current UTC (Universal Time Coordinated) of the
device. UTC is the time relating to the coordinated world time measurement. UTC is the
same worldwide and does not take local time shifts into account.

The time in the System time field comes from the System time (UTC) plus the Local offset [min]
value and a possible shift due to daylight saving time.

In order to cause the device to apply the time of your PC to the System time field, click the
Set time from PC button.
Based on the value in the Local offset [min] field, the device calculates the time in the System
time (UTC) field: The System time (UTC) comes from the System time minus the Local offset
[min] value and a possible shift due to daylight saving time.

The Time source field displays the origin of the time data. The device automatically selects
the source with the greatest accuracy.
The source is initially local .
When SNTP is active and the device receives a valid SNTP packet, the device sets its time
source to sntp .

The Local offset [min] value specifies the time difference between the local time and the
System time (UTC) .

In order to cause the device to determine the time zone on your PC, click the Set time from
PC button. The device calculates the local time difference from UTC and enters the
difference into the Local offset [min] field.
Note: The device provides the option to obtain the local offset from a DHCP server.

To save the changes temporarily, click the button.
enable Change to the Privileged EXEC mode.
configure Change to the Configuration mode.
clock set <YYYY-MM-DD> <HH:MM:SS> Set the system time of the device.
clock timezone offset <
-
780..840> Enter the time difference between the local time
and the received UTC time in minutes.
save Save the settings in the non-volatile memory (
nvm
)
in the “selected” configuration profile.