[ntp:questions] Number of Stratum 1 & Stratum 2 Peers

Martin Burnicki martin.burnicki at meinberg.de
Fri Dec 5 13:15:31 UTC 2014

David Taylor wrote:
> On 04/12/2014 20:03, Rob wrote:
> []
>> It is not good practice to use "pool" on 100-1000 internal systems,
>> presumably via NAT, to poll time from internet.
>> Simple advice is: setup 1 NTP server when you are always monitoring,
>> or 2 servers when you cannot always be on watch to fix the one server,
>> and keep them mutually synchronized.
>> That will work OK in a company.  Maybe not in the head of a thought
>> experimenter, but that is normally not what companies are after.
> I was thinking of the general user.
> For internal systems I would want four servers minimum, two on-site, and
> two on the company WAN, and that's what we tried to set up.

You may run into problems if your WAN connection has asymmetric delays, 
and thus to 2 servers on the WAN *seem* to have the same offset which 
differs from the offset provided by the 2 servers on the local network.


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