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893-741-B A2-21
Configuring the Model 5390 Server
Using the Time Server
The Model 5390 server maintains a UNIX-style time-of-day clock, which is based on the Internet
date and time server. The Model 5390 distribution includes source code for a time server if one is
not available on the preferred load host. The Model 5390 server synchronizes its clock by requesting
the time from a time server.
The time server expresses time in the number of seconds since midnight (00:00:00), January 1,
1970, Greenwich Mean Time (GMT). The Model 5390 server converts the time of the time server
to local time and uses it to log events to syslog and to calculate the time of a boot and/or dump. The
CLI stats and who commands display this time; the local file system ls command displays the time
the files were last modified.
The Model 5390 server requests the time when it boots and synchronizes its clock with a server
every 30 minutes. It always queries the preferred load host first if one is defined. If a time server
does not respond, the Model 5390 server displays unknown in place of its time.
By default, if a time server is not available on the preferred load host, the Model 5390 server does
not broadcast for the time. However, you can enable broadcasting for a time server by setting the
time_broadcast parameter to Y. Most UNIX systems provide a time server with the inetd daemon.
The Model 5390 server does not reset its time by more than 10 minutes based on an answer to a
broadcast request. If the time returned to the broadcast query was greater than 10 minutes from the
Model 5390 server’s current time, the Model 5390 server only resets its time by a maximum of 10
minutes. If the time server is on the preferred load host, the Model 5390 server adjusts to the time
reported by the time server, regardless of the time interval.
info Starting and ending of CLIs and of Model 5390 jobs
created by the rlogin and telnet commands and the ping
and tap superuser CLI commands.
debug Activation and exit of all Model 5390 processes.
CAUTION: Every host on the network that has a time server will
respond to a broadcast for the time.
Table A2-2. Priority Levels for the syslog_mask Parameter (continued)
Level Description