Guest Jeroen Wijnands Posted May 16, 2008 Posted May 16, 2008 I've got a small customer domain consisting oft 4 windows 2000 member servers, 1 windows 2000 domain controller and, since a few months 2 windows 2003 domain controllers. 2 of the member servers are running an application that requires these 2 servers to agree on time. Since there was upto a 50 seconds discrepancy I was asked to investigate. I followed http://support.microsoft.com/kb/816042 to set the windows 2003 server that was the pdc emulator to use an external timesource. After this I stopped the w32time service on all the servers, did a w32tm -s and started the service again. All the windows 2000 servers now agree on the correct time. The 2003 servers are almost a minute ahead of them. I then did a net time on the servers and noticed that all, including my pdc emulator, gave the name and time of the windows 2000 dc. So I figured that that server may be serving logon requests. According to Set that windows 2000 DC wasn't my logon server but the pdc emulator was. Now, my laptop here is a member of a much, much larger domain. My logon server is a DC here in the country but net time lists a server in dubai. For my collegue on the next desk net time gives a DC in australia. Who can shed some light on this?
Guest Bjarne Duelund Posted May 17, 2008 Posted May 17, 2008 Re: confused about time synchronisation Are any of the DC's virtual ? I have seen problems when virtual DC's was automatically time synced with the host. You could try this command on the 2003 member servers/DC's not PDC: w32tm /config /syncfromflags:domhier /update And restart the timeservice: net stop w32time net start w32time - Bjarne Duelund "Jeroen Wijnands" <jeroen.wijnands@gmail.com> skrev i meddelelsen news:08955a6f-48fd-41c3-94a4-f175a479acb7@k37g2000hsf.googlegroups.com... > I've got a small customer domain consisting oft 4 windows 2000 member > servers, 1 windows 2000 domain controller and, since a few months 2 > windows 2003 domain controllers. > > 2 of the member servers are running an application that requires these > 2 servers to agree on time. Since there was upto a 50 seconds > discrepancy I was asked to investigate. I followed http://support.microsoft.com/kb/816042 > to set the windows 2003 server that was the pdc emulator to use an > external timesource. After this I stopped the w32time service on all > the servers, did a w32tm -s and started the service again. > > All the windows 2000 servers now agree on the correct time. The 2003 > servers are almost a minute ahead of them. > I then did a net time on the servers and noticed that all, including > my pdc emulator, gave the name and time of the windows 2000 dc. So I > figured that that server may be serving logon requests. According to > Set that windows 2000 DC wasn't my logon server but the pdc emulator > was. > > Now, my laptop here is a member of a much, much larger domain. My > logon server is a DC here in the country but net time lists a server > in dubai. For my collegue on the next desk net time gives a DC in > australia. > > Who can shed some light on this?
Guest Jeroen Wijnands Posted May 20, 2008 Posted May 20, 2008 Re: confused about time synchronisation Thanks for the reply Bjarne. There's no virtual DC's in this environment so that's not it. I've got the time sync issue sorted now but what still baffles me is how it is determined which server will respond to a net time command. On May 17, 4:58 pm, "Bjarne Duelund" <duelund (at) danbbs.dk> wrote: > Are any of the DC's virtual ? > I have seen problems when virtual DC's was automatically time synced with the host. > > You could try this command on the 2003 member servers/DC's not PDC: > w32tm /config /syncfromflags:domhier /update > > And restart the timeservice: > net stop w32time > net start w32time > > - Bjarne Duelund > > "Jeroen Wijnands" <jeroen.wijna...@gmail.com> skrev i meddelelsennews:08955a6f-48fd-41c3-94a4-f175a479acb7@k37g2000hsf.googlegroups.com... > > > I've got a small customer domain consisting oft 4 windows 2000 member > > servers, 1 windows 2000 domain controller and, since a few months 2 > > windows 2003 domain controllers. > > > 2 of the member servers are running an application that requires these > > 2 servers to agree on time. Since there was upto a 50 seconds > > discrepancy I was asked to investigate. I followedhttp://support.microsoft.com/kb/816042 > > to set the windows 2003 server that was the pdc emulator to use an > > external timesource. After this I stopped the w32time service on all > > the servers, did a w32tm -s and started the service again. > > > All the windows 2000 servers now agree on the correct time. The 2003 > > servers are almost a minute ahead of them. > > I then did a net time on the servers and noticed that all, including > > my pdc emulator, gave the name and time of the windows 2000 dc. So I > > figured that that server may be serving logon requests. According to > > Set that windows 2000 DC wasn't my logon server but the pdc emulator > > was. > > > Now, my laptop here is a member of a much, much larger domain. My > > logon server is a DC here in the country but net time lists a server > > in dubai. For my collegue on the next desk net time gives a DC in > > australia. > > > Who can shed some light on this?
Recommended Posts