Moving time source to another DC

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i have 1 windows 2003 sp2 dc , 4 windows 2008r2 dc’s.  the 2003 dc (call olddc) had 5 fsmo roles, , time source our single-domain forest.  it set sync linux server (ip address 192.168.1.100) in our environment syncs external time source.  i moved of fsmo roles 1 of 2008r2 dc’s (call primedc), ran following on primedc make time source forest:

w32tm /config /manualpeerlist:192.168.1.100 /syncfromflags:manual /reliable:yes /update

net stop w32time

net start w32time

 

i ran following commands on olddc:

w32tm /config /syncfromflags:domhier /reliable:no /update

net stop w32time

net start w32time

 

i checked registry on these 2 servers.  on primedc, setting hklm\system\currentcontrolset\services\w32time\parameters\ntpserver changed 192.168.1.100, there no tag (0x8, 0x9, or 0x1) associated it.  this setting on olddc had been “192.168.1.100,0x8”.   setting hklm\system\currentcontrolset\services\w32time\parameters\type changed nt5ds ntp.

on olddc, setting hklm\system\currentcontrolset\services\w32time\parameters\type changed ntp nt5ds, setting hklm\system\currentcontrolset\services\w32time\parameters\ntpserver not changed, , remains @ “192.168.1.100,0x8”.  

do need manually add tag “0x8” ntpserver key on primedc?  also, setting ntpserver key on olddc matter since type key set nt5ds, or should manually change well?

thank help.

hi logan,

as using linux machine ntp server, some ntp servers not run windows respond requests use client mode.

try below command set in client mode:

  • w32tm /config /manualpeerlist:ntp_server_ip_address,0x8 /syncfromflags:manual /reliable:yes /update

the mode windows time uses send requests set following registry subkey:
hkey_local_machine\system\currentcontrolset\services\w32time\timeproviders\ntpserver
if value of enabled entry in subkey 1, windows time uses symmetric active mode. otherwise, windows time uses client mode.

the 0x8 setting referenced in command in "resolution" section sets windows time use client mode.

the valid settings mode used the /manualpeerlist switch include following:
  • 0x01 - use special poll interval specialinterval
  • 0x02 - useasfallbackonly
  • 0x04 - send request symmetricactive mode
  • 0x08 - send request client mode

source: 

time synchronization may not succeed when try synchronize non-windows ntp server in windows server 2003

http://support.microsoft.com/kb/875424

regards,
rafic

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Windows Server  >  Windows Server General Forum



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