question on net time before demoting old servers

charle kentser 61 Reputation points
2020-10-04T22:13:50.983+00:00

at the point where we are going to demote our old 2008r2 DCs and just use 2012.

noticed if we run net time on workstations "some" still point towards the old 2008r2 servers.

is that anything to worry about, or will they update one the two old 2008r2s are removed?

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  1. Dave Patrick 426.1K Reputation points MVP
    2020-10-04T22:27:35.237+00:00

    Some general info

    If the 2012 is the PDC emulator then you can run

    w32tm /unregister
    net stop w32time
    w32tm /register
    net start w32time
    w32tm /config /manualpeerlist:<external ntp address> /syncfromflags:manual /reliable:yes /update
    net stop w32time
    net start w32time
    then check
    w32tm /query /source
    w32tm /query /configuration

    All others

    w32tm /unregister
    net stop w32time
    w32tm /register
    net start w32time
    w32tm /config /syncfromflags:domhier /update
    net stop w32time
    net start w32time
    then check
    w32tm /query /source
    w32tm /query /configuration

    --please don't forget to Accept as answer if the reply is helpful--

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  2. charle kentser 61 Reputation points
    2020-10-04T22:29:35.31+00:00

    actually, the PDC (2012) points to the OLD pdc for time (2008r2)any idea why that would happen?  the FSMO roles are all transferred and looks good.

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  3. Dave Patrick 426.1K Reputation points MVP
    2020-10-04T22:31:39.66+00:00

    Sounds like it is currently using NT5DS instead of NTP
    you can check it (post results)
    w32tm /query /source
    w32tm /query /configuration

    --please don't forget to Accept as answer if the reply is helpful--

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  4. charle kentser 61 Reputation points
    2020-10-04T23:35:16.283+00:00

    got this from the commands: source is one of the 2008r2 servers, see below:

    C:\>w32tm /query /source
    2008-2.mydomain.com

    C:\>w32tm /query /configuration
    [Configuration]

    EventLogFlags: 2 (Local)
    AnnounceFlags: 10 (Local)
    TimeJumpAuditOffset: 28800 (Local)
    MinPollInterval: 6 (Local)
    MaxPollInterval: 10 (Local)
    MaxNegPhaseCorrection: 172800 (Local)
    MaxPosPhaseCorrection: 172800 (Local)
    MaxAllowedPhaseOffset: 300 (Local)

    FrequencyCorrectRate: 4 (Local)
    PollAdjustFactor: 5 (Local)
    LargePhaseOffset: 50000000 (Local)
    SpikeWatchPeriod: 900 (Local)
    LocalClockDispersion: 10 (Local)
    HoldPeriod: 5 (Local)
    PhaseCorrectRate: 7 (Local)
    UpdateInterval: 100 (Local)

    [TimeProviders]

    NtpClient (Local)
    DllName: C:\Windows\system32\w32time.DLL (Local)

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