[ntp:questions] NTPD sync now

David Woolley david at djwhome.demon.co.uk
Thu Nov 2 22:25:22 UTC 2006


In article <3ltp14-tse.ln1 at robert.houseofmax.de>,
Uwe Klein <uwe_klein_habertwedt at t-online.de> wrote:

> what irks me is that ntp allways creates extra slots in between.

That's a problem with your demand dial software.  You should use software
that you can configure to transmit NTP when the link is up but not bring
it up for NTP, nor keep it up for NTP.  (Good demand dial software will
also do things like varying the timeout depending on the type of packet
and whether there are open TCP connections.)

Alternatively, you can, but only after getting explicit permission
from the people who operate your servers (you will probably find this
limits you to your ISP and your own company), use the burst option,
which should try enough polls with enough gaps to ensure that the later
polls get through.  Using burst without permission is considered as
serious abuse and may get you blocked by the server.

Generally, though, ntpd and demand dial don't go together particularly
well.




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