[ntp:questions] Very rapid polling

gary.limanapier at elisys.co.uk gary.limanapier at elisys.co.uk
Sun Feb 15 10:08:20 UTC 2009


On Feb 15, 9:15 am, Uwe Klein <uwe_klein_habertw... at t-online.de>
wrote:
> gary.limanap... at elisys.co.uk wrote:
> > Just joining this discussion as we have noticed NTP request from our
> > Authorised Server every 300ms on our LAN. They occur only between the
> > Time Server and the WiFi Tablet during a socket connection while there
> > is a low signal strength. The Tablet sends its own NTP request with a
> > Poll Interval of 4 (16 seconds). The server returns its response
> > increasing the Poll Interval to 10 (1024 secs). The server then keeps
> > sending this same packet every 300-500ms.
>
> Does the ntp process submit these packets repeatedly or
> are you seeing some (uncalled for) "collision/resend" action due to
> issues with the wlan connection?
>
> uwe

Would it matter if the packet colided? NTP is using UDP and I can't
see from the packet analyser that it is expects a response back. When
it does work with a known good machine there is no acknowledgement of
the packet being sent. Do you think that there another level of
operation in the network that I am not seeing with the packet analyser?




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