Configure NTP (Network Time Protocol) clients on AIX

How to configure NTP on client with a NTP server .Our NTP servers  are   time_server01 and  time_server02

1. Verify that you have a server suitable for synchronization offset  must  be smaller  then 1000 ms 
   #ntpdate -d time_server01
2. Check if it is  running  or  not (configured  before)
   #lssrc -ls xntpd
3. Specify your ntp servers in /etc/ntp.conf  .Comment out the “broadcastclient” line (if applicable )
   #vi /etc/ntp.conf
   
   server    time_server01 prefer
   server    time_server02
   driftfile /etc/ntp.drift
   tracefile /etc/ntp.trace
   #broadcastclient
4. Be sure  that  you can rach time servers .if you define  a server  name  (not an IP be sure that you can  reach it ).You can add it  in /etc/hosts
   
   #vi /etc/hosts
   10.1.1.10       time_server01
   10.1.1.11       time_server02
   
   #ping  time_server01
   #nslookup time_server01
5. start  stop
   #stopsrc -s xntpd
   #startsrc -s xntpd
6. check  if it is  running  and  Sys peer should display the IP address or name of your xntp server. This process may take up to 15 minutes
   
   #lssrc -ls xntpd
   #lssrc -ls xntpd|grep "Sys peer"
   #ntpq -p
7. Uncomment xntpd from /etc/rc.tcpip so it will start on a reboot.
   
   # vi /etc/rc.tcpip
   Uncomment the following line:
   start /usr/sbin/xntpd "$src_running"