[ntp:questions] Re: What does 18.104.22.168 refer to?
david at djwhome.demon.co.uk
Wed Nov 9 06:30:50 UTC 2005
In article <pan.2005.11.08.12.20.42.84922 at mail.localhost.invalid>,
"Tim <tim at mail.localhost.invalid>" wrote:
> as it's clock via the DHCP daemon (a local server for the LAN). The local
> clock setting is a manual thing left in so NTP carries on running if the
> network is down.
NTP continues to run regardless of whether or not the network is up, and
regardless of whether there is a local clock configured. Local clocks
should never be used on leaf nodes. Also, it is conventional to use a
stratum more like 10, to minimise the damage if anything does try and
synch to a machine using a free running local clock.
When used as a fallback on servers, local clocks compromise the ability
to estimate the uncertainty in the time, because root dispersion and delay
are reset when the local clock is selected.
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