[ntp:questions] Problem with NTP multicast server configuration

[ntp:questions] Problem with NTP multicast server configuration

Post by Brad Knowl » Mon, 17 Jan 2005 10:11:45

Use either one server or at least three. Two servers is the
worst possible configuration, see
< http://www.yqcomputer.com/ #Section_4.3.3.>.

Other than that, if you want the servers (and clients) to keep
reasonably accurate time, you'd need to add an external refclock.

A GPS with OXCO (Oven Stabilized Crystal Oscillator) would be
ideal, but that would require a connection to the outside world,
albeit not to the Internet. Other alternatives of this sort would
include a radio refclock (DCF77, CHU, WWV/WWVB/WWVH, etc...), a CDMA
refclock, or even simple dial-up ACTS modem service.

If you cannot have any kind of connection to an outside source,
then you could have an OXCO or TXCO (Thermally Compensated Crystal
Oscillator), and at least that would have less drift and less
variation in drift than the standard CPU clocks that you have in your

But you really should read through all of
< http://www.yqcomputer.com/ ;, and
ideally also the rest of the stuff at
< http://www.yqcomputer.com/ ;.

Of course, there's also the NTP FAQ at
< http://www.yqcomputer.com/ ;, and the official NTP
documentation at
< http://www.yqcomputer.com/ ~mills/ntp/html/index.html>.

Brad Knowles, < XXXX@XXXXX.COM >

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."

-- Benjamin Franklin (1706-1790), reply of the Pennsylvania
Assembly to the Governor, November 11, 1755

SAGE member since 1995. See < http://www.yqcomputer.com/ ; for more info.