Ntp Configuration And Time Synchronization; Table 1-4 Xscf Unit And Domain Time Synchronization - Fujitsu SPARC Enterprise M4000 User Manual

1.3.2

NTP Configuration and Time Synchronization

The system uses the XSCF Unit clock for the system standard time.
The domains in the server synchronize their times based on the XSCF Unit clock
when the domains are started. The XSCF Unit clock can be adjusted to the exact time
through a network connection to an external NTP server. In that way, the XSCF Unit
becomes the NTP server and an NTP client.
Only domains may specify XSCF as an NTP server.
Note – Alternatively, the domains can synchronize their times through a connection
to an external NTP server. However, there is a possibility that time differences exist
between the XSCF and the domain. If you connect the domain to an external NTP,
please connect the high rank NTP server that supplies the time of the same accuracy
as the domain as for XSCF.
For details about NTP server setting, see
TABLE 1-4
XSCF Unit and Domain Time Synchronization
TABLE 1-4
Client Primary NTP Server
Domain XSCF Unit
External NTP server
XSCF No connection
External NTP server
Note – For details on the setdate (8) command, see the XSCF Reference Manual.
outlines XSCF and domain time synchronization methods.
Time Synchronization Method
The domain time is adjusted to the XSCF Unit clock time.
XSCF Unit operates as the NTP server.
The domain time is adjusted to the standard time of the external NTP
server.
The XSCF Unit time is the time in initial system settings or the time
set by the setdate (8) command. (Note)
The XSCF Unit time is adjusted to the standard time of the external
NTP server.
Chapter 2.
Chapter 1 XSCF Overview 1-17