Time Cluster With External Time Servers - Fujitsu Siemens Computers SX series User Manual

Functions of the SX server entry-level models

5.5 Time cluster with external time servers

In principle, the use of an external time server in BS2000 is not necessary because BS2000
is automatically synchronized with the Solaris time of the X2000 carrier system. When
requirements relating to accuracy of the time reference used are tightened, however, the
use of an external timer for X2000 is recommended.
On entry-level models the X2000 carrier system is a direct NTP client of an NTP server in
the network.
If an external time server is used, the NTP configuration file /etc/inet/ntp.conf must be
created and the IP address of this server must be made known to the system. For this
purpose the file must contain at least the following entries:
server xxx.xxx.xxx.xxx prefer
server 127.127.1.0
fudge
driftfile /var/ntp/ntp.drift
Other entries are optional (see the example in the section
page 95).
The changes in the NTP configuration file become effective automatically the next time
Solaris starts up. In order to activate changes in the NTP configuration file during ongoing
operation, the administrator must start the NTP daemon again:
#/etc/rc2init.d/S74xntpd stop <RETURN>
#/etc/rc2init.d/S74xntpd start <RETURN>
!
For the diagnostic commands ntpq, xntpdcand ntptrace see the section
commands (for the SMC and the partitions)" on page
U41272-J-Z385-3-76
127.127.1.0 stratum 5
WARNING!
This action must not be performed when the BS2000 system is running because a
time jump may then occur.
Time cluster with external time servers
# IP address of the NTP server
# Select a medium stratum value
"NTP client (partitions)" on
95.
"NTP diagnostic
131