Just some quick instructions for configuring and enabling NTP client on Solaris 11.

Backup the existing ntp.conf file, if it exists:

if [ -r /etc/inet/ntp.conf ] ; then /bin/mv /etc/inet/ntp.conf /etc/inet/ntp.conf_`date +'%Y-%m-%d_%H%M%S'`

Create a new ntp.conf:

cat << EOF > /etc/inet/ntp.conf
server 0.pool.ntp.org
server 1.pool.ntp.org
server 2.pool.ntp.org
server 3.pool.ntp.org
driftfile /var/ntp/ntp.drift
statsdir /var/ntp/ntpstats/
filegen peerstats file peerstats type day enable
filegen loopstats file loopstats type day enable
EOF

Run time update once manually to verify connectivity:

# ntpdate 0.pool.ntp.org
 7 Oct 20:02:34 ntpdate[25549]: step time server 63.245.214.135 offset 153.036870 sec

Enable ntp client service and verify it is working:

svcadm enable ntp

root@solaris11:~# svcs | grep ntp
online         20:02:41 svc:/network/ntp:default

See what NTP client is doing:

root@solaris11:~# ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*tic.apt.cat     128.227.205.3    2 u   19   64  377   32.289   29.129   9.017
+ntp.awesomemari 216.66.0.142     3 u   21   64  377   22.788   18.035  15.603
xtime01.muskegon 204.9.54.119     2 u   13   64  377   33.524  -334.25  25.541
+sola-dal-09.ser 184.173.173.205  3 u   20   64  377   38.119   41.857  16.345