HP-UX Internet Services Administrator's Guide (February 2007)
Table 4-7 An ntpq Output Indicating Known NTP Hosts
remote refid st t when poll reach delay offset disp
==================================================================
*GPS_HP(1) GPS 0 l 48 64 377 0.00 0.516 4.19
hpps.cup.hp cupertino 3 u 467 1024 377 7.20 -12.430 15.67
+server2 WWVB 1 u 173 256 377 279.95 20.56 16.40
+node1 node3 2 u 131 256 373 9.89 16.28 23.25
Each column in Table 4-7 is described as follows:
• The remote (server name) column depicts the hosts specified in the local host’s
configuration file plus other hosts that are configured as peers with the local host.
The host address can be preceded by the following special characters:
□ * indicates the current synchronization source.
□ # indicates that the host is selected for synchronization, but distance from the
host to the server exceeds the maximum value.
□ o indicates that the host is selected for synchronization, and the PPS signal is
in use.
□ + indicates the host included in the final synchronization selection set.
□ x indicates that the host is the designated false ticker by the intersection
algorithm.
□ . indicates that the host is selected from the end of the candidate list.
□ - indicates a host discarded by the clustering algorithm.
□ blank indicates a host is discarded due to high stratum and/or failed sanity
checks.
• The refid (reference identification) column indicates the current source of
synchronization for the remote host. .WWVB. indicates that the host uses a radio
clock that receives time signals from the U.S. government radio station WWVB.
• The st (stratum) column indicates the stratum level of the remote host.
• The t(types) column denotes the available types, which include
— l=local (such as a GPS clock)
— u=unicast (this is the common type)
— m = multicast
— b= broadcast
— - = netaddr (usually 0)
• The when column indicates the number of seconds since the remote host response
was received.
• The poll (poll period) column indicates the polling interval to the remote host,
as determined by xntpd. You can define the minimum polling interval with the
minpoll option in the peer, server, or broadcast definitions in the
/etc/ntp.conf file. Some popular values for network connections include 512
Advanced NTP Topics 71