[ntp:questions] Re: Philosophical question about strata
Lee Sailer
lee.sailer at direcway.com
Thu Oct 13 00:08:36 UTC 2005
First, thanks to everybody for replying. However, my original question
was not as clear as it could have been. Let me continue...
My company has 6 GPS time sources at various worldwide locations. They
are stratum 1.
Every once in awhile, one or the other of them has a harddware problem.
As a result, that one will drift a little. That is, its offset will
be 1, 2, or more seconds different from the other five. When we detect
this, we replce the hardware as a matter of course.
Now, it seems to me that a stratum 2 server will never have this
problem. It gets time from several places, and uses the various
algorithms to try to make sense. The stratum 1 gets time from a bunch
of satellites, and then if it screws up the calculation or has some
sort of hardware glitch, then it is screwed.
Therefore, I conclude:
1. If everything is working, stratum 1 is better than stratum 2.
2. If the stratum 1 hardware is suffering a slow degradation
breakdown, then the stratum 2 will be better.
Whaddya think 8-)
lee
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