Configuring System Time

Use the System Time page to configure the current time, time zone, DST, and the time source.

CAUTION    

The switch does not have an internal clock that updates this value. If the system time is set manually and the switch is rebooted, the manual time settings must be reentered.

To define system time:

  1. Click Administration> Time Settings > System Time. The System Time page opens.
  2. Enter the parameters.
  3. Clock Source Settings--Select the source used to set the system clock.

    • Main Clock Source (SNTP Servers)--The system time is obtained from an SNTP server. To use this feature, you must also add an SNTP server and enable SNTP Broadcast mode by using the SNTP Settings page. Optionally, enforce authentication of the SNTP sessions by using the SNTP Authentication page. This feature does not function when the switch is in layer 3 mode.
    • Alternate Clock Source (PC via active HTTP/HTTPS sessions)--Select to set the date and time from the configuring computer using the HTTP protocol.

    NOTE     If Alternate Clock Source is selected, the time will be taken from the PC running the GUI. Each time you log into the GUI, the time is taken from your PC.

    Manual Settings--Set the date and time manually, or click here to import them from your computer. The local time is used when there is no alternate source of time, such as an SNTP server:.

    • Date--Enter the system date.
    • Local Time--Enter the system time.

    Time Zone Settings--The local time is used via DHCP or Time Zone offset.

    • Get time zone from DHCP--Select to enable dynamic configuration of the time zone and the DST from the DHCP server. Whether one or both of these parameters can be configured depends on the information found in the DHCP packet. If this option is enabled, you must also enable DHCP client on the switch. To do this, set the IP Address Type to Dynamic in the IPv4 Interface page.
    • Time Zone Offset--Select the difference in hours between Greenwich Mean Time (GMT) and the local time. For example, the Time Zone Offset for Paris is GMT +1, while the Time Zone Offset for New York is GMT – 5.

    Daylight Savings Settings--Select how DST is defined:

    • Daylight Savings--Check to enable daylight Savings Time.
    • Time Zone Offset--Enter the number of minutes offset from GMT ranging from 1--1440. The default is 60.
    • Daylight Savings Type--Click one of the following:
      • USA--DST will be set according to the dates used in the USA
      • European--DST will be set according to the dates used by the European Union and other countries that use this standard.
      • By Dates--DST will be set manually, typically for a country other than the USA or a European country. Enter the following parameters:
      • Recurring--DST occurs on the same date every year. Enter the following parameters:

    Selecting By Dates allows customization of the start and stop of DST:

    • From--Day and time that DST starts.
    • To--Day and time that DST ends.

    Selecting Recurring allows further customization of the start and stop of DST:

    • From--Date when DST begins each year.
      • Day--Day of the week on which DST begins every year.
      • Week--Week within the month from which DST begins every year.
      • Month--Month of the year in which DST begins every year.
      • Time--The time at which DST begins every year.
    • To--Date when DST ends each year. For example, DST ends locally every fourth Friday in October at 5:00 am. The parameters are:
      • Day--Day of the week on which DST ends every year.
      • Week--Week within the month from which DST ends every year.
      • Month--Month of the year in which DST ends every year.
      • Time--The time at which DST ends every year.
  4. Click Apply. The system time values are defined, and the Running Configuration file is updated.

The time settings are displayed in the Actual Time Details block.