[ntp:questions] NTP stratum-1 architecture

Nero Imhard nim at pipe.nl
Wed Dec 5 18:32:44 UTC 2007


Groenewoud, Raymond wrote:

> * Three stratum-1 NTP-servers, geographically dispersed * Each 
> stratum-1 NTP-server has a peering relation with each other stratum-1
>  NTP-server * Two stratum-1 NTP servers use GPS as stratum-0. * Two 
> stratum-1 NTP servers use Rubidium as stratum-0. * (So consequently, 
> one stratum-1 server uses both).

If I read this correctly, you are exclusively relying on GPS as a time
source (Rubidium is a frequency source). I would suggest that you use
different *independent* time sources, and as many as practical. Radio
signals from DCF77 and MSF both have very good signal quality in The
Netherlands.

N




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