r1 - 2009-01-23 - 23:55:59 - JohannesMaximilianKuehnYou are here: NTP >  Dev Web > RefclockUpdateCheck
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Refclock Update Check

About two weeks ago (January 7th 2009) someone reported that ntpdate refuses to sync with ntp.nmi.nl. An interesting point here was that ntpdate refused to sync with this server while ntpd and sntp accepted it.

The cause that made ntpdate refuse this server's packets was that this server's ref clock hasn't been updated for more than 1 day. ntpdate got a sanity check which checks if the server's refclock has been updated during the last 24 hours according to the reference clock update timestamp.

In principle this checks looks like a wise thing to do. What do you guys think about this check? Shouldn't ntpd/sntp check for that in general (with a user defineable threshold and a sane default)?

-- JohannesMaximilianKuehn - 23 Jan 2009

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