WESM zl Management and Configuration Guide WT.01.03 and greater

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Configuring the ProCurve Wireless Edge Services zl Module
Enabling Secure Network Time Protocol (NTP)
Figure 2-97. Add Neighbor Screen
3. Select Broadcast Server for the neighbor type.
4. In the IP Address field, enter the broadcast address for the module’s
subnetwork.
For example, you want the module to run the broadcast server on its VLAN
8 interface, which has the address 10.4.8.30/24. Enter 10.4.8.255.
5. In the NTP Version field, use the drop-down menu to select the version of
NTP to use with this configuration.
Although the latest version of the NTP implementation is NTPv4, the
official Internet standard is NTPv3.
6. Choose the authentication mode required by clients: No Authentication
or Symmetric Key Authentication.
When you implement NTP in broadcast mode, it is recommended should
configure your clients to require authentication. Otherwise, they might
receive the time from a rogue server.
Autokey authentication is not an option for broadcast services on the
Wireless Edge Services zl Module.