CloudEngine S5700 and S6700 V600R022C00 Configuration Guide - System Management
System Time Configuration
Overview of System Time
Definition
System time refers to the current time on a device and is an important parameter for device running.
Purpose
System time recorded in device logs and alarms enables administrators to identify when specific events occurred. In addition, a correctly configured system time ensures the accuracy and consistency of device collaboration when multiple devices interwork on a network.
Configuration Precautions for System Time Management
Licensing Requirements
System time is not under license control.
Hardware Requirements
|
Series |
Models |
|---|---|
S5732-H-V2 series |
S5732-H24S4X6QZ-TV2/S5732-H24S4X6QZ-V2/S5732-H24UM4Y2CZ-TV2/S5732-H24UM4Y2CZ-V2/S5732-H44S4X6QZ-TV2/S5732-H44S4X6QZ-V2/S5732-H48UM4Y2CZ-TV2/S5732-H48UM4Y2CZ-V2 |
S6730-H-V2 series |
S6730-H24X6C-TV2/S6730-H24X6C-V2/S6730-H28X6CZ-TV2/S6730-H28X6CZ-V2/S6730-H48X6C-TV2/S6730-H48X6C-V2/S6730-H48X6CZ-TV2/S6730-H48X6CZ-V2/S6730-H48Y6C-TV2/S6730-H48Y6C-V2 |
Feature Requirements
Feature |
Feature Requirements |
Series |
Models |
|---|---|---|---|
Date and time management |
The configured time cannot be earlier than the kernel compilation time. |
S5732-H-V2 series S6730-H-V2 series |
S5732-H24S4X6QZ-TV2/S5732-H24S4X6QZ-V2/S5732-H24UM4Y2CZ-TV2/S5732-H24UM4Y2CZ-V2/S5732-H44S4X6QZ-TV2/S5732-H44S4X6QZ-V2/S5732-H48UM4Y2CZ-TV2/S5732-H48UM4Y2CZ-V2 S6730-H24X6C-TV2/S6730-H24X6C-V2/S6730-H28X6CZ-TV2/S6730-H28X6CZ-V2/S6730-H48X6C-TV2/S6730-H48X6C-V2/S6730-H48X6CZ-TV2/S6730-H48X6CZ-V2/S6730-H48Y6C-TV2/S6730-H48Y6C-V2 |
Configuring the System Time
Context
System time is the current time that a device keeps track of and is recorded in timestamps of sent packets. Users in different regions can configure the system clock according to the following conventions:
System time = Coordinated Universal Time (UTC) + Time zone offset + Daylight saving time (DST) offset
The system time needs to be set correctly so that a device can coordinate properly with other devices. However, on networks that contain multiple devices, setting or adjusting the system time manually involves a heavy workload and may compromise the clock accuracy. To ensure that all devices enabled with clock synchronization can obtain the same time, you can configure the Network Time Protocol (NTP) feature. This allows devices to synchronize their clocks so that they can provide diverse applications based on consistent time.
Procedure
- Configure the time zone.
clock timezone time-zone-name { add | minus } offset
add: adds the specified time zone offset on the basis of the UTC time. The default system time (UTC time) plus the time zone offset (offset) is the time in the time zone specified by time-zone-name.
minus: subtracts the time zone offset (offset) from the UTC time. The remainder obtained by subtracting the time zone offset (offset) from the default system time (UTC time) is the time in the time zone specified by time-zone-name.
After a time zone is configured, the device adds timestamps to the local log in the format of original system time ± offset. An example is Apr 27 2020 22:36:09+08:00.
- Configure the current time.
clock datetime [ utc ] time date
The time format is HH:MM:SS, and the date format is YYYY-MM-DD.
If the configuration contains the keyword utc, the configured time is the UTC time. If the configuration does not contain the keyword utc and a time zone has been configured, the configured time is the system time.
If the configuration does not contain the keyword utc and no time zone has been configured, the system saves the configured time (UTC time) based on time zone 0. In this case, the configured time is the system time. If a time zone is configured later, the current time plus the time zone offset is the system time.
- (Optional) Configure the DST.
clock daylight-saving-time dstname one-year start-time start-date end-time end-date offset
or
clock daylight-saving-time dstname repeating start-time { { first | second | third | fourth | last } startweekday startmonth end-time { first | second | third | fourth | last } endweekday endmonth } offset [ startyear [ endyear ] ]
During configuration of periodic DST, the start time and end time can be configured in four modes: date+date, week+week, date+week, and week+date. For configuration details, see the clock daylight-saving-time command.
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If the current time is the DST time, you can set a time zone using the clock timezone time-zone-name { add | minus } offset command. However, the time zone name displayed in the display clock command output remains as the DST time zone name, which can be displayed as the configured time zone name only after the DST ends.
- (Optional) Set the date format of the device.
clock date-format { YYYY-MM-DD | MM-DD-YYYY }
By default, the date format of a device is YYYY-MM-DD.
YYYY-MM-DD indicates year-month-day, and MM-DD-YYYY indicates month-day-year.
