System Time
System Time Options
Cisco Small Business 200 Series Smart Switch Administration Guide 53
6
System Time Options
System time can be set manually by the user, dynamically from an SNTP server, or
synchronized from the PC running the GUI. If an SNTP server is chosen, the manual
time settings are overwritten when communications with the server are
established.
As part of the boot process, the switch always configures the time, time zone, and
DST. These parameters are obtained from the PC running the GUI, SNTP, values
set manually, or if all else fails, from the factory defaults.
Time
The following methods are available for setting the system time on the switch:
• Manual—You must manually sets the time.
• From PC—Time can be received from the PC by using browser information.
The configuration of time from the computer is saved to the Running
Configuration file. You must copy the Running Configuration to the Startup
Configuration in order to enable the device to use the time from the
computer after reboot. The time after reboot is set during the first WEB login
to the device.
When you configure this feature for the first time, if the time was not already
set, the device sets the time from the PC.
This method of setting time works with both HTTP and HTTPS connections.
• SNTP—Time can be received from SNTP time servers. SNTP ensures
accurate network time synchronization of the switch up to the millisecond by
using an SNTP server for the clock source. When specifying an SNTP server,
if choosing to identify it by hostname, three suggestions are given in the GUI:
- time-a.timefreq.bldrdoc.gov
- time-b.timefreq.bldrdoc.gov
- time-c.timefreq.bldrdoc.gov
After the time has been set by any of the above sources, it is not set again by the
browser.
NOTE SNTP is the recommended method for time setting.
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