Configuring NTP Broadcast Mode on a C Series Controller (C-Web Interface)
To configure NTP to operate in broadcast mode:
Click Configure, expand System, and click NTP.
The NTP pane appears.
In the Create new list, select Broadcast. Type an IP address or a hostname on one of the local networks or a multicast address assigned to NTP. Click OK.
Enter information as described in the Help text in the main pane, and click Apply.
If the remote system has authentication enabled, specify an authentication key and value. The system transmits the specified authentication key when transmitting packets.