HP-UX Internet Services Administrator's Guide (May 2010)

For more information on configuring external clocks, type man 1M xntpd at the HP-UX
prompt.
Figure 4-4 shows the peer, server, and broadcast statements that are configured for all
the servers.
Figure 4-4 Example Configurations
You must configure the time server in the client system. For example, if Penelope is
a client for Bonita, you must configure the name or IP address of Bonita on
Penelope. You need not configure Penelope as a client on Bonita.
Configuring a Driftfile
The xntpd daemon computes the clock frequency error for a local host, and stores the
frequency error in a driftfile. xntpd computes an accurate estimate of the frequency
error after running for one or more days. When xntpd restarts, the driftfile allows
xntpd to reinitiate itself to the estimate stored in the driftfile; thus, helping xntpd to
save time in recomputing the frequency estimate. You can specify a name and path for
the driftfile.
NOTE: xntpd must be running continuously; if you wish to stop xntpd, it must be
for a short duration.
You can use the following option to specify the driftfile:
driftfile driftfile
where, driftfile specifies the file name used to record the frequency offset of the local
clock oscillator. HP recommends the location /etc/ntp.drift for storing the driftfile.
The following is an example of a driftfile statement:
driftfile /etc/ntp.drift
Advanced NTP Topics 63