Active Directory - Windows Server 2012 R2

TechUser2020-6505 231 Reputation points

I want to update the NTP time source on my Domain Controllers as we're updating our NTP appliances. The commands I've seen to do this are:

w32tm.exe /config /syncfromflags:manual /manualpeerlist:,0x8,0x8 /reliable:yes /update

The question I have is what does the 0x8 do? Is it needed?

From reading below, I still don't know the difference between setting 0x8, 0x1 or something else.

Please advise

Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
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Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
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  1. JimmySalian-2011 38,621 Reputation points


    0x8 definition is as below:

    The 0x8 setting that is referenced in the command in the "Resolution" section sets Windows Time to use client mode.

    The valid settings for the mode used with the /manualpeerlist switch include:

    0x01 - use special poll interval SpecialInterval
    0x02 - UseAsFallbackOnly
    0x04 - send request as SymmetricActive mode
    0x08 - send request as Client mode


    Hope this helps.

    Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

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  1. TechUser2020-6505 231 Reputation points

    Thanks Jimmy,
    The bit I was missing was understanding the context, in essence if you're syncing with a non Windows NTP server, then use 0x8 for client mode?

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