Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X Configuration Manual page 565

host1# show ntp associations detail
Peer 10.6.129.58 is selected, stratum 3
Peer is a Broadcast Server, version 3, broadcasts every 64 sec
Root Delay 0.059052 sec, Dispersion 0.189056 sec, Sync Dist. 0.229679 sec
Peer Delay -0.000016 sec, Dispersion 0.009665 sec, Offset 0.050714 sec
Reachability 11111110, Precision 0.000000 sec
'Source' Interface : default (transmit interface)
Sync Dist. Measure of the total time error since the update in the path
to the stratum 1 server
Peer Delay Round-trip delay, with the lowest dispersion value in the
sample buffer, between the system and the server
Peer Dispersion Lowest measure, in the sample buffer, of the error
associated with the peer offset, based on the peer delay and precision
Offset Difference, with the lowest dispersion in the sample buffer,
between the system's clock and the server's clock
Reachability—8-bit number that shows whether or not the NTP server
responded to the last eight requests from the system; one indicates a
response; zero indicates no response. For example, 11111111 indicates
that the NTP server responded to the last eight requests. If the system
reaches one server less often than it does other servers, that server is
not a good choice for the master.
Precision Length of the clock tick (interrupt interval) of the server's
clock
Source IP address of the interface to which NTP servers should send
NTP responses
Timestamps of latest time samples from this peer; actual timestamps
displayed depends on how the server is configured
Root reference at Last time at which the stratum 1 server sent an NTP
reply to the server
Last request sent Last time at which the system sent an NTP request
to the server
Response/Broadcast was sent Last time at which the server sent an
NTP reply or broadcast to the system
Response/Broadcast received Last time at which the system received
an NTP reply or broadcast from this server
Sample buffer for this peer contains the following samples:
Delay Round-trip delay from client to server
Offset Difference between client's and server's clocks
Dispersion—Measure of the errors of the offset values, based on the
round-trip delay and the precisions of the system and the server
Example
Chapter 10: Configuring the System Clock
Monitoring NTP
535