[ntp:questions] SNTP server + ntpd 4.2.4 client

Maarten Wiltink maarten at kittensandcats.net
Tue Mar 25 11:15:25 UTC 2008

"Unruh" <unruh-spam at physics.ubc.ca> wrote in message
news:RHcFj.95365$FO1.58226 at edtnps82...
> Look, an SNTP client is not supposed to act as a server. Period.

Unless... its clock is disciplined by means external to NTP.
For example, by a reference clock. Not all reference clocks must
necessarily be NTP servers; there are other ways to use them to
make sure that some clock in the next computer over runs Very Close
to UTC.

It has been said right here that many if not most of the black box
stratum-1 servers operate by the exact mechanism you condemn: an
SNTP client polling a local refclock at some suitably short interval,
presumably with a simple feedback loop but without the full NTP and
its higher math & other assorted magic.

Maarten Wiltink

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