gary.limanap...@elisys.co.uk wrote: > On Feb 15, 9:15 am, Uwe Klein <uwe_klein_habertw...@t-online.de> > wrote: >> gary.limanap...@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?
How would an NTP packet collide? With what? NTP packets are always unique. If a client sends a packet to the server it will get a response (if it responds at all) with an identical-looking packet. If there is no response either the server is dropping the request or there is a firewall in the way dropping the requests. This is not an ethernet packet and the nature of UDP is that there is no automatic resend. Danny _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
