[ntp:questions] NTP request retry?
cswiger at mac.com
Mon Jan 27 19:03:59 UTC 2014
On Jan 27, 2014, at 10:10 AM, Rob <nomail at example.com> wrote:
> Despite lots of tracing I still cannot really pinpoint the problem.
> The only thing I see is that ping has absolutely zero loss and all
> usual protocols work fine, but ntp indicates a high loss when there
> is no other network activity.
> When the network is kept busy, ntp works fine as well.
> Very strange.
That's odd. Are the NTP servers and your client subnet-local or remote?
If they're remote, then ARP probably isn't involved unless you're having
issues finding your default gateway. Set up an /etc/ethers entry  for it,
or for your subnet-local NTP servers if you have them around, and see whether
it makes a difference.
Otherwise, tcpdump/wireshark/etc captures should be informative.
: I'm assuming a Unix-like OS, but adjust as needed.
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