[ntp:questions] Basic Question - How often does Client poll Server?
brad at stop.mail-abuse.org
Mon Mar 21 18:03:05 UTC 2005
At 7:05 AM -0800 2005-03-21, zev wrote:
> My question is regarding the amount of traffic the NTP protocol will
> generate on the network. How often does an NTP Client poll the NTP
> Server? Unlike other IP protocols there doesnt seem to be a fixed
> timer interval.
It depends on the implementation. In theory, the NTP client
should start querying at a short interval initially (on the order of
every sixteen seconds or so), but as it gathers more data, it should
be able to increase that interval and then maintain a longer interval
as it continues to run (on the order of 1024 seconds).
However, some poor implementations can do really, really bad
things, like querying every second -- or worse. Even with good
implementations, it may be possible to mis-configure them so that
they behave poorly.
So, it all depends on your implementation, and your configuration.
Brad Knowles, <brad at stop.mail-abuse.org>
"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."
-- Benjamin Franklin (1706-1790), reply of the Pennsylvania
Assembly to the Governor, November 11, 1755
SAGE member since 1995. See <http://www.sage.org/> for more info.
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