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Configure a manual time source for a selected client computer
Updated: March 2, 2005
Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2
Before you configure a manual time source for a client computer, you can determine the time difference between it and the source as a means to test basic NTP communication. After completing the configuration on the selected client computer, be sure to monitor the System log in Event Viewer for W32Time errors.
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| For more information about the w32tm command, type w32tm /? at a command prompt or see Windows Time Service Tools and Settings on the Microsoft Web site (http://go.microsoft.com/fwlink/?LinkId=42984). |
Administrative Credentials
To perform this procedure, you must be a member of the Administrators group on the local computer. To perform this procedure from a remote computer, you must be a member of the Domain Admins group.
To configure a manual time source for a selected client computer
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Open a Command Prompt.
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Type the following command to display the time difference between the local computer and a target computer, and then press ENTER:
w32tm /stripchart /computer: target /samples: n /dataonly
Value Definition target
Specifies the DNS name or IP address of the NTP server that you comparing the local computer's time against.
n
Specifies the number of time samples that will be returned from the target computer to test basic NTP communication.
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Open UDP port 123 for outgoing traffic on firewall if needed.
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Open UDP port 123 (or a different port you have selected) for incoming NTP traffic.
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Type the following command to configure a manual time source for the selected computer and then press ENTER:
w32tm /config /manualpeerlist: peers /syncfromflags:manual /update
where peers specifies the list of DNS names or IP addresses of the NTP time source(s) that the selected computer will synchronize from. When specifying multiple peers, use a space as the delimiter and enclose them in quotation marks.
 Tip |
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| For links to SNTP server lists, see article 262680 in the Microsoft Knowledge Base (http://support.microsoft.com/kb/262680). |
