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



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


SYNOPSIS
       ntptrace [ -n ] [ -m maxhosts ] [ server ]


DESCRIPTION
       ntptrace	 is a perl script that uses the ntpq utility program to follow
       the chain of NTP servers from a given host back	to  the	 primary  time
       source.	For  ntptrace  to  work	 properly,  each of these servers must
       implement the NTP Control and Monitoring Protocol specified in RFC 1305
       and enable NTP Mode 6 packets.

       If given no arguments, ntptrace starts with localhost. Here is an exam-
       ple of the output from ntptrace:

       % ntptrace
       localhost: stratum 4, offset 0.0019529, synch distance 0.144135
       server2ozo.com: stratum 2, offset 0.0124263, synch distance 0.115784
       usndh.edu: stratum 1, offset 0.0019298, synch distance 0.011993, refid 'WWVB'

       On each line, the fields are (left to right): the host name,  the  host
       stratum,	 the time offset between that host and the local host (as mea-
       sured by ntptrace; this is why it is not always zero for	 "localhost"),
       the host synchronization distance, and (only for stratum-1 servers) the
       reference clock ID. All times are given in seconds. Note that the stra-
       tum  is	the server hop count to the primary source, while the synchro-
       nization distance is  the  estimated  error  relative  to  the  primary
       source. These terms are precisely defined in RFC-1305.


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


BUGS
       This  program  makes  no	 attempt to improve accuracy by doing multiple
       samples.


SEE ALSO
       ntpd(8)

       The official HTML documentation.

       This file was automatically generated from HTML source.




								   ntptrace(8)