NTP setup

To setup NTP on LTM 11.x,

GUI:
System -> Configuration -> Device -> NTP
Add the servers to the list and update.

Command:
SSH into LTM

#tmsh
/Common (tmos)#modify /sys ntp servers add {10.18.21.240 10.18.21.241}
/Common (tmos)#save /sys config
/Common (tmos)#list /sys ntp servers

To restart ntpd service, in case of issues,
#bigstart restart ntpd