[ntp:questions] Implementing NTP in a legacy system

andreas.ames at de.transport.bombardier.com andreas.ames at de.transport.bombardier.com
Wed Dec 12 10:34:59 UTC 2012

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?

Thanks in advance,


Bombardier Transportation GmbH 
Vorsitzender des Aufsichtsrats / Chairman of Supervisory Board: Prof. Dr. 
Wilhelm Bender 
Geschäftsführung / Executive Board: Michael Clausecker 
(Vorsitzender/Chairman), Dr. Susanne Kortendick, Luc Charlemagne, 
Gregorius Peters 
Sitz der Gesellschaft / Principal Office: Berlin 
Registergericht / Registration Court: Amtsgericht Charlottenburg, HRB 


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