ntptrace4(1M) System Administration Commands ntptrace4(1M)NAMEntptrace4 - trace a chain of NTP hosts back to their master time source
SYNOPSIS
/usr/sbin/ntptrace4 [-n] [-m maxhosts] [server]
DESCRIPTIONntptrace4 determines from where a given Network Time Protocol (NTP)
server gets its time, and follows the chain of NTP servers back to
their master time source. If given no arguments, it starts with local‐
host.
OPTIONS
The following options are supported:
-n Turns off the printing of host names; instead, host IP
addresses are given.
-m maxhosts Sets the maximum number of levels up the chain that will
be followed.
EXAMPLES
Example 1 Sample Output From the ntptrace4 Command
The following example shows the output from the ntptrace4 command:
% ntptrace4
localhost: stratum 4, offset 0.0019529, synch distance 0.144135
server2.bozo.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):
o The server's host name
o The server's stratum
o The time offset between that server and the local host (as
measured by ntptrace4; this is why it is not always zero for
localhost)
o The host's synchronization distance
o The reference clock ID (only for stratum-1 servers)
All times are given in seconds. Synchronization distance is a measure
of the goodness of the clock's time.
NOTES
Source for ntptrace4 is available in the SUNWntp4S package.
The package name that delivers this program will be changed in the next
release and should not be relied on. The name of this program will also
change at that time, and should not be relied on.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWntp4u │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Volatile Obsolete │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOntpq4(1M), ntpd(1M), ntpdc(1M), attributes(5))
ntptrace4(1M)