[ntp:questions] Re: The asymmetry strikes again!

David L. Mills mills at udel.edu
Thu Jul 21 02:36:10 UTC 2005


Matt,

The mathematical answer is very simple: The error is half the actual 
delay difference between the outbound and return path.

Dave

Matt Kinard wrote:
> I'm still researching NTP issues over an asymmetric network, and I was
> wondering if I could get some suggestions as to what sort of accuracy
> I'm looking at sacrificing.
> 
> Are we talking 20 ms or are we talking about 1 or 2 seconds? Is it
> contingent upon how asymmetric my network is? What is the threshold?
> 
> For the particular application I'm studying, there is some acceptable
> risk in terms of lost accuracy, but I need some more concrete ideas.
> 
> Thanks all!
> Matt
> 
> 
> 
> 
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