[ntp:questions] Selection and Clustering of candidates

Mischanko, Edward T Edward.Mischanko at arcelormittal.com
Sun Jun 26 06:28:04 UTC 2011


I choose to poll 15 servers on my network for time synchronization.  NTP
is selecting over 10 servers and clustering them.  Some of the servers
NTP selects have offsets that are higher than the majority; in other
words, they do not have the correct time.  Why are they being selected?
Why are so many being selected when I really want the best 5 or 6.

# Miscellaneous stuff
tinker allan 7
tos minclock 4 minsane 3
#
driftfile "C:\Program Files\NTP\etc\ntp.drift"
#
enable stats
statsdir "C:\Program Files\NTP\etc\"     # directory for statistics
files
statistics loopstats
filegen loopstats file loopstats type day link enable
#
#    Need to set up time sources...
#
#
server 000.000.102.1 minpoll 4 maxpoll 10
server 000.000.106.1 minpoll 4 maxpoll 10
server 000.000.109.1 minpoll 4 maxpoll 10
server 000.000.110.1 minpoll 4 maxpoll 10
server 000.000.112.1 minpoll 4 maxpoll 10
server 000.000.120.1 minpoll 4 maxpoll 10
server 000.000.121.1 minpoll 4 maxpoll 10
server 000.000.122.1 minpoll 4 maxpoll 10
server 000.000.123.1 minpoll 4 maxpoll 10
server 000.000.124.1 minpoll 4 maxpoll 10
server 000.000.125.1 minpoll 4 maxpoll 10
server 000.000.126.1 minpoll 4 maxpoll 10
server 000.000.129.1 minpoll 4 maxpoll 10
server 000.000.131.1 minpoll 4 maxpoll 10
server 000.000.134.1 minpoll 4 maxpoll 10




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