[ntp:questions] Re: Question on NTP v3 and v4

John Pettitt jpp at cloudview.com
Fri Aug 12 19:08:55 UTC 2005


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derek.flake at bell.ca wrote:
> Are there any issues with a client running NTP v3 trying to sync to a
> Stratum 2 server running NTP v4 which is synced to a GPS Stratum1 clock?
> 
>  

Two things to consider

1) ntp v3 had some security issues.
2) in any config you really want at least 4 upstream servers to allow
for detection of falsetickers.

What you are suggesting will work but won't be reliable in the event
of one of the upstream boxes failing.

John
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