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How to Configure Microsoft Windows Server 2008 R2 as an Internal NTP Server for Cisco Devices

Here we are Configuring a Windows Server 2008 R2 as an NTP Server, I am configuring my Domain Controller as an NTP Server in my Production Environment. So you must be easy while changing some registry values as stated below to make the Windows Server as an NTP Server. (but only do what is directed here).Go to you Domain Controller Server,Click Start, In Run, Type Regedit and press Enter
Navigate to the default Registry Value of NTP Server in Windows Server
HKLM > System > CurrentControlSet > Services > W32Time > TimeProviders > NtpServer
A default installation of Windows Server 2008 R2 can be seen in below picture
Change the Registry Value of Enabled from 0 to 1.
Close the Registry Window
Go to Command Line Window and Type this Command in it w32tm /config /update and you are done.

Now go to your Cisco Device (switch/Router), and configure it to get time from this newly configured ntp server
Switch(Config-t)#ntp server 10.0.0.2
here the IP Address is the IP of NTP Server (Domain controller Configured above).

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