System Time Settings on ESW2 350G Series Managed Switches

Objective

The system clock on ESW2 350G Switches can be set in two different ways: manually or synchronized via Simple Network Time Protocol (SNTP). SNTP is a protocol used to synchronize the clocks of devices on the same data network. When the device uses a local server, the device receives updates to the time at preset intervals. However, the device also supports the use of an SNTP server, which assures accurate (up to the millisecond) network device clock time synchronization.

This article explains how to configure system time settings on ESW2 350G Switches.

Applicable Devices

• ESW2-350G-52
• ESW2-350G-52DC

Software Version

• 1.3.0.62

System Time

Step 1. Log in to the web configuration utility and choose Administration > Time Settings > System Time. The System Time page opens:

The Actual Time (Static)  field shows the system time on the switch. It displays the acronym for the user-defined timezone or the DHCP timezone.

The Last Synchronized Server field shows the address and type of the SNTP server from which the time was last configured.

Step 2. In the Main Clock Source (SNTP Servers) field check the Enable check box to dynamically synchronize the switch time with time from a SNTP server. If you check the Enable check box the manual settings becomes dimmed, so skip to Step 6.

Step 3. In the Alternate Clock Source (PC via active HTTP/HTTPS sessions) field, check the Enable check box to synchronize the time via PC. 

Step 4. In the Date field, enter the date in YYYY-MMM-DD format. 

Step 5. In the Local time field, enter the time in HH:MM:SS format.

Note: You can also click the here link to import the time and date from the PC currently in use.

Step 6. . In the Get Time Zone from DHCP field check the Enable check box to dynamically configure the timezone and the Daylight Saving Time (DST) from a DHCP server if one is available. 

In the Time Zone from DHCP field the acronym of the time zone configured from the DHCP server is displayed.

Step 7. From the Time Zone Offset drop-down list choose the time difference that indicates the difference in hours between Greenwich Mean Time and the local time. It is set as Coordinated Universal Time (UTC) by default.

Step 8. In the Time Zone Acronym field enter the acronym of the time zone up to four characters. For example CST for (Central Time) or MST for (Mountain Time).

Step 9. In the Daylight Savings field check the Enable checkbox to enable Daylight Saving Time (DST).

Timesaver: If you do not require the Daylight Savings Settings, uncheck the Enable check box which makes all other DST settings undeditable. You can skip to Step 16.

Step 10. In the Time Set Offset field enter the number of minutes, from 1 to 1440, to offset from the GMT. It is set as 60 by default.

Step 11. In the Daylight Savings Type field click the radio button for the desired type of DST type to be used.

• USA — If the user is located in the United States of America and wants to observe Daylight Saving Time automatically on the switch as per country/area standards.

• European — If the user is located in a European country and wants to observe Daylight Saving Time automatically on the switch as per country/area standards.

• By dates — If the user wants to observe Daylight Savings through specific dates.

• Recurring — Choose this option if certain Daylight Savings settings are observed periodically.

Note: If you click By dates as the Daylight Savings Type then the first From and To parameters become editable. 

Step 12. In the From field that corresponds to date and time, enter the date and time at which the DST starts. 

Step 13. In the To field that corresponds to date and time, enter the day and time at which the DST ends. 

Note: If you click Recurring as the Daylight Saving Type then the second From and To fields become available.

Step 14. Enter the day, week, month and time for which DST begins every year in the From fields.

Step 15. Enter the day, week, month, and time for which DST ends every year in the respective To fields.

Step 16. Click Apply to save the configuration.