[ntp:questions] NTP servers redundancy

Brian Utterback brian.utterback at sun.com
Thu Jan 21 20:34:00 UTC 2010

David Woolley wrote:

> The clock frequency is based on the combined offset, so, unless you are
> using prefer flags, it should not jump when the system peer changes.

Not necessarily. It depends on the offsets, dispersions and root
dispersions. And the combining algorithm uses a weighting so one or
the other server can dominate and which one dominates can change.

Brian Utterback

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