OWAMP can refer to One-Way Active Measurement Protocol,
see http://tools.ietf.org/html/rfc4656, or the tool that follows
that protocol to measure one-way delay,
see http://www.internet2.edu/performance/owamp/
NREN, as stated before, means National Research and Education Network.
@unruh: yes, I was talking in the range of microseconds,
not single microsecond accuracy!
This is the current output of ntpq -p on X1 server:
[alias@x1 ntp]# ntpq -p
remote refid st t when poll reach delay offset jitter
=============================================
*time01.nren.pt .DCFa. 1 u 7 16 377 5.661 0.021 0.015
time02.nren.pt .DCFa. 1 u 6 16 377 1.240 0.078 0.026
time04.nren.pt .DCFa. 1 u 2 16 377 2.324 0.102 0.009
time03.nren.pt .DCFa. 1 u - 16 377 8.757 0.109 0.011
If the delay, offset and jitter values are shown in milliseconds,
I am led to believe X1 currently has an offset to time01 stratum
1 server of 21 microseconds, right? If S1 has the same offset,
I can expect a maximum error of 42 microseconds on the owd
measurements, ignoring the errors caused by the delay asymmetry.
Is this correct?
Pedro
On Saturday, October 27, 2012 5:19:09 PM UTC+1, Richard B. Gilbert wrote:
> On 10/26/2012 5:56 PM, pret3n...@gmail.com wrote:
>
> > Hi all, and thank you for your answers. I'm afraid I might not have
>
> > been clear about my objectives, so I'll try to explain clearer.
>
> > I'll also try and keep the lines smaller, and please, excuse me if
>
> > I make any mistakes, as english is not my native language.
>
> >
>
> > This project involves a NREN, which interconnects several institutions.
>
>
>
> I give up? WHAT IS "NREN"?????
>
>
>
> <snip>
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