Solved

How to configure NTP server

Posted on 2011-02-18
5
1,195 Views
Last Modified: 2012-08-13
Hi guys

I have the following scenario

FOREST ROOT-> DC1 -> PDC EMULATOR (NTP)
                        -> DC2 -> Gets time from different source (?)
CHILD DOMAIN -> DC1 -> Gets time from PDC Emulator
                         -> DC2 -> Gets time from a network router (?)

I heard that you could sync NTP time with network devices, but is this the best practice? as far as I know you should sync time with the forest root domain holding the PDC emulator role. Am I correct? is that configuration in the child domain to sync the time with a network device correct?

Thanks very much!
0
Comment
Question by:M7K
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 27

Expert Comment

by:KenMcF
ID: 34924927
Only the PDCe in the root domain should be getting its time from an external time source. See this blog article that explains this and the steps to configure.

http://blogs.dirteam.com/blogs/jorge/archive/2010/09/27/configuring-and-managing-the-windows-time-service-part-1.aspx
0
 

Author Comment

by:M7K
ID: 34925142
Hi Ken
Thanks very much for that

Question, what would happen if one of the dcs in the child domain is syncing time with a network device? what could be the consecuences?
And also, the PDC emulator is syncing time with an Atomic clock which is very reliable, how I should configure the NTP server to the child domains? is that something that I should do by GPO or is being done automatically?

Thanks again!
0
 
LVL 11

Expert Comment

by:MichaelVH
ID: 34925217
As long as the DCs in the child domain don't get out the time-reach of your PDC that wouldn't be much of a problem (though not supported nor adviced!)

You should setup other servers to sync with your PDC (and it is set like that by default).
0
 
LVL 27

Accepted Solution

by:
KenMcF earned 500 total points
ID: 34925225
It could cause major issues. One example would be if the network device had a corupt config and the time converted back or forward. This would cuase replication issues, tombstone of objects, ect..
One way to prevent this is to adjust the regisrty settings in this article below. I would sugest to only have your Root ODCe sync with a reliable external time source and then let windows sync the rest.


http://support.microsoft.com/kb/884776
0
 

Author Comment

by:M7K
ID: 34925261
Brilliant thanks a lot
0

Featured Post

Revamp Your Training Process

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains the steps required to use the default Photos screensaver to display branding/corporate images
Recently, Microsoft released a best-practice guide for securing Active Directory. It's a whopping 300+ pages long. Those of us tasked with securing our company’s databases and systems would, ideally, have time to devote to learning the ins and outs…
Attackers love to prey on accounts that have privileges. Reducing privileged accounts and protecting privileged accounts therefore is paramount. Users, groups, and service accounts need to be protected to help protect the entire Active Directory …
This video shows how to use Hyena, from SystemTools Software, to update 100 user accounts from an external text file. View in 1080p for best video quality.

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question