Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - SYSTEM BASICS CONFIGURATION GUIDE 2010-10-04 Configuration Manual page 550

JunosE 11.3.x System Basics Configuration Guide
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Peer—IP address of server, status of the server: configured, master, selected,
candidate, correct, or unusable
configured—Confirmation that you assigned this NTP server to the system
master—System has chosen this server as the master
selected—System will consider this server when it chooses the master
candidate—System may consider this server when it chooses the master
correct—System considers the server's clock to be reasonably correct
unusable—Server does not meet the initial criteria for the master
stratum—Number of hops between the server and its stratum 1 server
Peer is a Broadcast/Configured Server—Type of NTP server: one that broadcasts
NTP messages or one you have configured for NTP services
version—Version of NTP on the server
polled every—Time between NTP requests from the system to the server
polls every—Time between NTP requests from the server to its NTP servers
Root Delay—Round-trip time between the server and its stratum 1 root server
Root Dispersion—Measure of all the errors associated with the network hops and
servers between the server and its stratum 1 server
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
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