Extreme Networks Altitude 4700 Series Product Reference Manual page 205

6 Configure the Server Settings field as required to define address information for the authentication
server. The appearance of the Server Settings field varies depending on whether Internal or External
has been selected from the Radius Server drop-down menu.
Radius Server
Address
Altitude 4700 Series Access Point Product Reference Guide
If using an External RADIUS Server, specify the numerical
(non-DNS) IP address of a primary Remote Dial-In User
Service (RADIUS) server. Optionally, specify the IP
address of a secondary server. The secondary server acts
as a failover server if the primary server cannot be
contacted. An ISP or a network administrator provides
these addresses.
RADIUS is a client/server protocol and software enabling
remote-access clients to communicate with a server used
to authenticate users and authorize access to the
requested system or service. This setting is not available if
Internal has been selected from the RADIUS Server drop-
down menu.
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