1. Stop the ntp services
#stopsrc –s xntpd
2. Sync the time with ntp, login as root, type
#ntpdate <ip_address of the NTP
server>
#ntpdate –d <ip_address of the NTP
server>
3. Make a copy of the file /etc/ntp.conf
#cp /etc/ntp.conf /etc/ntp.conf_bak
4. Edit file /etc/ntp.conf and append
#broadcastclient --Comment out
server <ip_address of the NTP
server> prefer
server
<ip_address of the NTP server>
driftfile /etc/ntp.drift
tracefile /etc/ntp.trace
6. Create the file /etc/ntp.drift with the following
entry:
0.0
7. After creating the drift file, ensure that it has the
right ownership and permissions:
-rw-r--r--
1 ntp ntp 6 Mar 2 11:09 drift
8. Start the NTP sercice
#startsrc –s xntpd
NOTE: If the server runs databases, use the -x flag to prevent the clock from changing in a
negative direction. Enter the following
# startsrc -s xntpd -a "-x"
9. Take backup and uncomment xntpd from /etc/rc.tcpip. so
it will start on a reboot.
#cp –p /etc/rc.tcpip /etc/rc.tcpip_bak
#vi /etc/rc.tcpip
Uncomment the following line
Start /usr/sbin/xntpd “$src-running”
10. Verify that the server is synched.
#lssrc -ls xntpd
ntpdate –q <ntpserver> should
not show the time difference more than 1 sec.
Reference:
broadcastclient
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Specifies that the
local server listen for broadcast messages on the local network in order to
discover other servers on the same subnet. When the local server hears a
broadcast message for the first time, it measures the nominal network delay
using a brief client/server exchange with the remote server, then enters
the broadcastclient mode, where it listens for and
synchronizes to succeeding broadcast messages.
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