03-12-2009 03:09 AM - edited 03-06-2019 04:32 AM
We have been recommended to sync our networking-equipment to one of our Dc's
(not the PDCEmulator itself).
However my boss has stated that our DC's has plenty of workload, and furthermore
that our PDC synchronizes against a public pool of DNS-stratum-2 servers, which,
acording to MIT-analysis, seem to be inaccurate or unavailable to a certain degree.
He says that all our firewalls etc. need very precise timing and recommends
that we buy a standalone appliance ntp-server and synchronizes all of our
networking equipment against that one.
But in doing so, it occurs to me that our networking equipment and the rest
of our domain (clients, servers etc) could be disagreeing on what the time
is, and if i am understanding this topic correctly, this is NOT
recommended - having 2 different NTPsources.
What is best practice if we do not want to synchronise against our Pdc's or
Dc's due to risk of overloading them...???
I am very gratefull for you kindness and hope for an answer.
/T
03-12-2009 03:13 AM
I would recommend that you sync with an extermely accurate NTP server. There are plenty on the internet that are reachable - configure 1 of your internal devices to do this, once you have your time in sync - point all your internal devices to your ntp source.
HTH>
03-12-2009 02:35 PM
Here is a list NTP servers for Denmark and Europe:
http://www.pool.ntp.org/zone/europe
http://support.microsoft.com/kb/262680
Use the following commands to configure NTP on your appliance:
ntp server
ntp server
When you review your config a few hours later, if you see ntp clock
Hope this helps.
03-13-2009 01:24 AM
Thanks for the replys both!
You do not find it to be a problem if there exist 2 stratum 3 NTP servers on the same domain (and hence with 2 different times)?
/Jan Dk
03-15-2009 02:35 PM
No I don't. Because I always make it a point to configure one of them to be "prefer".
I always make sure that all the NTP servers are valid (and remove the dead ones).
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