The IP hops taken by NTP requests & responses may depend on UDP source and destination port numbers. It isn't unusual to find the delays associated with such paths differing by 10+ msec. Traceroute delays may not match those seen by NTP.
NTP delays can be surprisingly long. I commonly see round-trip delays between the US and Japan of over 20 seconds. There are some signs that NTP is being throttled. On Tue, Feb 21, 2017 at 1:59 AM, Ask Bjørn Hansen <[email protected]> wrote: > > > On Feb 20, 2017, at 16:54 , Peter <[email protected]> wrote: > > > > So, it's clearly something between this network and the monitor station. > > What I see on traceroutes is my home connection goes via NTT whereas the > > datacenter goes via a different route. > > You can do traceroutes the other direction with: > > https://trace.ntppool.org/traceroute/82.70.138.66 > https://trace.ntppool.org/traceroute/149.202.2.105 > > (Etc) > > > Ask > _______________________________________________ > pool mailing list > [email protected] > http://lists.ntp.org/listinfo/pool > _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool
