cuiinc
asked on
confirm that ntp is working
I understand that my domain contoller and backup DC are automatically set up as NTP servers. How do I confirm that NTP is working correctly on them. My investigations online found commands like ntpq -p, but these definitely don't work from a command line. Any suggestions?
(i'm using Windows Server 2008 R2)
(i'm using Windows Server 2008 R2)
ASKER
hmm. several questions:
I had previously ran Windows "fix-it-for-me" app, configuring the server to use an external time source, on my BACKUP DC, not on my PDC. (http://support.microsoft.com/kb/816042).
When I run W32tm /query /configuration on my PDC, I get the following (see below). Should I run W32tm /unregister on the backup DC and W32tm /register on my PDC?
Primary Domain Controller:
C:\Users\manager>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\w32tim
Enabled: 1 (Local)
InputProvider: 1 (Local)
CrossSiteSyncFlags: 2 (Local)
AllowNonstandardModeCombin
ResolvePeerBackoffMinutes:
ResolvePeerBackoffMaxTimes
CompatibilityFlags: 2147483648 (Local)
EventLogFlags: 1 (Local)
LargeSampleSkew: 3 (Local)
SpecialPollInterval: 3600 (Local)
Type: NT5DS (Local)
NtpServer (Local)
DllName: C:\Windows\system32\w32tim
Enabled: 1 (Local)
InputProvider: 0 (Local)
AllowNonstandardModeCombin
VMICTimeProvider (Local)
DllName: C:\Windows\System32\vmicti
Enabled: 1 (Local)
InputProvider: 1 (Local)
I had previously ran Windows "fix-it-for-me" app, configuring the server to use an external time source, on my BACKUP DC, not on my PDC. (http://support.microsoft.com/kb/816042).
When I run W32tm /query /configuration on my PDC, I get the following (see below). Should I run W32tm /unregister on the backup DC and W32tm /register on my PDC?
Primary Domain Controller:
C:\Users\manager>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\w32tim
Enabled: 1 (Local)
InputProvider: 1 (Local)
CrossSiteSyncFlags: 2 (Local)
AllowNonstandardModeCombin
ResolvePeerBackoffMinutes:
ResolvePeerBackoffMaxTimes
CompatibilityFlags: 2147483648 (Local)
EventLogFlags: 1 (Local)
LargeSampleSkew: 3 (Local)
SpecialPollInterval: 3600 (Local)
Type: NT5DS (Local)
NtpServer (Local)
DllName: C:\Windows\system32\w32tim
Enabled: 1 (Local)
InputProvider: 0 (Local)
AllowNonstandardModeCombin
VMICTimeProvider (Local)
DllName: C:\Windows\System32\vmicti
Enabled: 1 (Local)
InputProvider: 1 (Local)
It sounds pretty obvious, but I've always tested by actually changing the time by a few seconds and checking back at whatever the polling interval was.
This is the only way to insure a full test to insure the system is properly configured & operational.
This is the only way to insure a full test to insure the system is properly configured & operational.
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
http://technet.microsoft.com/en-us/library/cc773263(v=ws.10).aspx