Ensure that the DHCP server is on and available on the
VLAN/subnet to which the device is connected. If the
device still fails to get a valid IP address, you can reboot it to
see if the problem is resolved.
Ensure that the server is running and is reachable from the
network to which the device is attached. If there is a firewall
or a router with ACLs enabled between the device and the
server, ensure that the traffic is allowed on UDP port 3851.
Use the server IP-based discovery and ensure that you have
correctly entered the DNS name, wifi-security-server, on
the DNS server. Also, ensure that the DNS server IP
addresses are either correctly configured on the, or are
provided by the DHCP server.
It is also possible that the AP is unable to connect to the
server because it has failed to authenticate with the server.
In this case, an 'Authentication failed for ' event is raised on
the server. Refer to the event for recommended action.