[ntp:questions] NTP makes a time jump

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Thu Jul 11 20:39:24 UTC 2013

karpekin at gmail.com wrote:
> Any advices how to make them all behave and be closer to each other?

Better system oscillators (TCXO OCXO) for less drift?
External PPS Rubidium/Cesium/GPS/... Refclock for Servers &/or Clients?

# ntp.conf for ALL your (Clients and/or Servers)
tos cohort 1 orphan 11
restrict default limited kod nomodify notrap
restrict source nomodify
keys "/etc/ntp.keys" # e.g. contains: 123 M YOUR_MD5_KEY
trustedkey 123
manycastclient key 123 preempt
multicastclient key 123 preempt
pool pool.ntp.org preempt                # Won't hurt anything if the internet can't be reached
tinker step 0
server iburst maxpoll 6     # If you address servers by name append preempt
# Note: Don't set minpoll or maxpoll excessively low for servers that are not owned by you

# add to ntp.conf for your S1 Server
server iburst maxpoll 6
server iburst maxpoll 6
server iburst maxpoll 6

Don't use server

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