The Client tab page displays the settings you can make to the time client function of the Windows Time service. If Domain Time II Server or Client
is installed, all options on this page will be disabled, since the Domain Time II service will be obtaining the time and managing the system clock.
The Windows Time service can be set to a variety of methods to obtain the time and set the local clock. Use the radio buttons to select the
method you prefer. Consult the Microsoft Windows Time documentation for a description of each of these options.
Disabled The client portion of Windows Time service will not be loaded.
NoSync The client portion of the Windows Time service is loaded, but does not attempt to obtain the time or synchronize
the clock. (Note, on Windows Server 2003, the service takes control of the NTP port 123 UDP, the Windows XP & 2000 versions do not).
This is the mode selected by default when a machine is a member of an Active Directory domain. It uses Active Directory to discover a time
server (called the "inbound time partner"), then uses either SNTP or LAN Manager to retrieve the time. NT5DS mode does not allow you to
specify the server, and on XP or above, the server must be a Windows Domain Controller that provides signed time packets.
This mode uses either the NT5DS and NTP methods to synchronize with a server. It tries NT5DS first, and if that fails (perhaps because your
machine isn't a member of a domain, or your machine's logon server is not available), it falls back to the list of manually-configured NTP/SNTP servers.
Special Interval: seconds
If Special Interval is selected as the NTP sync mode (see below), this field allows you to specify the number of seconds to wait between attempts
to synchronize the system clock. This setting corresponds to the SpecialPollInterval value in the [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClient] registry key.
Use the time source fields to enter the IP address or DNS name of NTP time sources you want the Windows Time service to synchronize with.
The Sync Mode dropdown box allows you to select the NTP sync mode to use:
Special Interval: As mentioned above, synchronizes using the Special Poll Interval setting
Fallback Only: Specifies this entry should be only used for fallback in the event other methods fail
Symmetric Active: Sends NTP sync requests using symmetric active packets (not compatible with all NTP servers)
NTP Client: Sends NTP sync requests using standard NTP Client packets
The button will instruct the Windows Time service to resynchronize with its time source. The sync may not occur immediately, it
happens according to the internal schedule of the time service.
Visual status indicators
The applet will constanly display the current clock variance of each selected source, as well as an indicator light showing the sync status of the local clock.
The currently selected time source (inbound time partner) is displayed as well.
Note: The variances shown are being displayed in the foreground by the applet itself. They will appear whether or not the Windows Time Service is running.