1ntptrace(8)                 System Manager's Manual                ntptrace(8)
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NAME

6       ntptrace - trace a chain of NTP servers back to the primary source
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SYNOPSIS

10       ntptrace [ -n ] [ -m maxhosts ] [ server ]
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DESCRIPTION

14       ntptrace  determines  where  a given Network Time Protocol (NTP) server
15       gets its time from, and follows the chain of NTP servers back to  their
16       master  time  source.  If given no arguments, it starts with localhost.
17       Here is an example of the output from ntptrace:
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19       % ntptrace
20       localhost: stratum 4, offset 0.0019529, synch distance 0.144135
21       server2ozo.com: stratum 2, offset 0.0124263, synch distance 0.115784
22       usndh.edu: stratum 1, offset 0.0019298, synch distance 0.011993, refid 'WWVB'
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24       On each line, the fields are (left to right): the host name,  the  host
25       stratum,  the time offset between that host and the local host (as mea‐
26       sured by ntptrace; this is why it is not always zero for  "localhost"),
27       the host synchronization distance, and (only for stratum-1 servers) the
28       reference clock ID. All times are given in seconds. Note that the stra‐
29       tum  is  the server hop count to the primary source, while the synchro‐
30       nization distance is  the  estimated  error  relative  to  the  primary
31       source. These terms are precisely defined in RFC-1305.
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OPTIONS

35       -n      Turns  off  the  printing  of  host  names;  instead,  host  IP
36               addresses are given. This may be  useful  if  a  nameserver  is
37               down.
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BUGS

41       This  program  makes  no  attempt to improve accuracy by doing multiple
42       samples.
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SEE ALSO

46       ntpd(8)
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48       Primary source of documentation: /usr/share/doc/ntp-*
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50       This file was automatically generated from HTML source.
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