In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] (David Woolley) wrote: > In article <[EMAIL PROTECTED]>, > Davide Bolcioni <[EMAIL PROTECTED]> wrote:
> > *ntp1.test.xxx 1.2.3.4 2 u 26 512 77 81.371 885.281 265.723 > > +ntp2.other.xx 1.2.3.5 2 u 25 512 73 232.661 483.476 285.616 > The error bands on these two don't overlap so one, or both, of them has to > be bad. I'm not sure why either of them are shown as selected, especially I wasn't strictly correct there, in that I ignored the root delay and root dispersion, which extend the error bands. However, even if you assume that the local hop delays are zero in one direction for one and zero for the other for the other, you still end up with the upstream servers differing by 157ms, and if one assumes that the 81 ms round trip is near minimal, 237ms. 237ms would make at least one of them outside the 128ms step out limit! Even 157ms means one must be more than half that limit away from true time. They might not be about to step, because they may have very assymmetric delays themselves, but at least one of them is certainly too far from true time to be safe operating as a stratum 2 server! _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
