Notes On Ntp Server; Notes On The Ntp Server Referring To The Local Clock - Fujitsu Sparc Enterpise M8000 Product Notes

Notes on NTP Server

We recommend the domain to use the XSCF Unit as NTP server. In this case, pay
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attention to the following points:
XSCF must be connected to an external NTP server
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When you connect one or more NTP servers in addition to XSCF, connect the
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same NTP server as XSCF is using
For details on NTP server, contact a service engineer. For details on NTP settings,
refer to the SPARC Enterprise M3000/M4000/M5000/M8000/M9000 Servers XSCF
User's Guide.

Notes on the NTP Server Referring to the Local Clock

When the NTP server which XSCF refers to is referring to the server's own system
time (local clock), and when the address of "127.127.1.0" is set to that local clock,
time synchronization in XSCF might fail.
The address of the XSCF's own local clock is fixed to "127.127.1.0." On the other
hand, when the address of the local clock of the NTP server which XSCF refers to
is set to "127.127.1.0," the address of the clock source (refid) has the same value as
the address of the XSCF's own local clock. An NTP server like this is excluded
from the target of XSCF time synchronization.
You can execute the showntp -l command to refer to the address of the NTP
server's own clock source which is set in XSCF and the address of the XSCF's own
local clock.
XSCF> showntp -l
remote refid st t when poll reach delay offset jitter
==============================================================================
192.168.1.2 LOCAL(0) 3 u 10 1024 377 0.000 0.000 0.000
*127.127.1.0 .LOCL. 5 l 28 64 377 0.000 0.000 0.008
Of the two NTP server outputs, the upper (192.168.1.2) indicates the NTP server
which is set by using the setntp(8) command. The refid is LOCAL(0), which
means that the local clock which has the address of "127.127.1.0" is set to the clock
source of this NTP server. On the other hand, the lower indicates the XSCF's own
local clock. The address of the XSCF's own local clock is fixed to "127.127.1.0."
Due to this, the NTP server (192.168.1.2) is excluded from the target of XSCF time
synchronization; which results in the XSCF synchronizes with its own local clock.
With any of the following measures to avoid the trouble, time can be correctly
synchronized with the NTP server which is set by using the setntp(8) command.
General Information About XCP 1092 7