[ntp:questions] Multiple 'prefer' servers

Ron Frazier (NTP) timekeepingntplist at c3energy.com
Wed Mar 21 15:10:16 UTC 2012

I had this same question before and once found the answer.  I tried to 
find it again before writing this reply but couldn't  I THINK I found 
that, if there are multiple prefers, and if all are eligible clocks, 
that the top one in the config file takes priority.  Someone else might 
be able to confirm that.

You could try a google search with: prefer multiple site:ntp.org

You could also read this page, but I don't think the answer is in 
there.  I could be wrong.  Note also that this page is for an old 
version of NTP.




On 3/20/2012 11:20 PM, A C wrote:
> Out of curiosity, what does ntpd do when multiple servers are marked 
> 'prefer'.  Does it use its clock algorithm and attempt to select the 
> best server from the collection of 'prefers' or does it just hang onto 
> one and use it always?


(PS - If you email me and don't get a quick response, don't be concerned.
I get about 300 emails per day from alternate energy mailing lists and
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Ron Frazier
timekeepingdude AT c3energy.com

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