[ntp:questions] Compensating for asymmetric delay on a per-peer/server basis?

Martin Burnicki martin.burnicki at meinberg.de
Mon Sep 15 08:06:25 UTC 2014

Rob schrieb:
> Paul <tik-tok at bodosom.net> wrote:
>> On Fri, Sep 12, 2014 at 4:03 AM, Martin Burnicki
>> <martin.burnicki at meinberg.de> wrote:
>>> +1
>>> However, path asymmetry includes
>> I think you're abusing the conventional notion of asymmetric latency.
>> Uncorrected bandwidth asymmetry will result in offsets between
>> truechimers.  Offsets between clocks that we hope are truechimers
>> doesn't mean link-speed asymmetry.
> No, not link-speed asymmetry but propagation-time asymmetry that may
> be the result of link-speed asymmetry but also could be caused by
> other asymmetries like interleaving in one direction, medium access
> protocols that do time-slotting in one direction, etc.

I just meant that there can be different overall propagation delays for 
a packet from the client ntpd and to a server ntpd, and from the server 
back to the client, and a possible ADSL connection is only is only one 
component of the overall asymmetry.

Martin Burnicki

Meinberg Funkuhren
Bad Pyrmont

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