[ntp:questions] Implementing NTP in a legacy system

Uwe Klein uwe at klein-habertwedt.de
Wed Dec 12 16:02:28 UTC 2012

andreas.ames at de.transport.bombardier.com wrote:
> Dear all,
> I'm rather new to NTP so please forgive me, if my question is trivial.
> I'm maintaining a legacy system with its own proprietary time 
> synchronisation protocols.  Now I want to add a new subsystem which 
> requires a NTP daemon to be available.  I have added a gateway device 
> which will be used to run an NTP daemon to provide NTP based time 
> synchronisation to the newly added subsystem.
> My questions are:
> 1. I want to use my legacy time synchronisation protocol/mechanism as the 
> reference clock of the NTP daemon on the gateway device.  In my limited 
> understanding this means that the NTP daemon on the gateway would become a 
> stratum 1 server, right? Are there ways to "easily" add new reference 
> clocks in popular implementations like ntpd preferably without setting the 
> system time on the gateway?
> 2. Is it possible to prevent ntpd on the gateway from setting the system 
> time on the gateway?
3. What are the ramifications in view of this being a certified system?
( just guessing, is this something that has a "Bahntechnische Zulassung" ? )


More information about the questions mailing list