User's Manual

32 Working with wireless communities and authentication
One server acts as a primary, while the others act as backup servers. The network type (IPv4 or
IPv6) and accounting mode are common across all configured global RADIUS servers. For
example, you can configure four IPv4 servers or four IPv6 servers, but not a combination of
IPv4 and IPv6 servers.
Note Additional IPv4 or IPv6 RADIUS servers can be configured for each wireless community when
802.1X/Dynamic WEP or WPA-Enterprise is used as the authentication protocol. See 802.1X/
Dynamic WEP on page 37 and WPA Enterprise on page 40.
Global RADIUS servers are configured on the Wireless > Communities page. Select + to the
left of Global RADIUS server settings.
RADIUS IP address type
Select IPv4 or IPv6. All configured RADIUS servers must be of the selected type.
RADIUS IP address/1/2/3
Enter up to four server IP addresses of the selected type. The first address is the primary RADIUS
server. If it is unavailable, the M220 will attempt to use the others in sequence.
RADIUS key/1/2/3
The RADIUS key is the shared secret key for the global RADIUS server. The first key corresponds
to the first IP address, and so on. Enter up to 64 alphanumeric and special characters. The key
is case-sensitive, and you must configure the same key on the AP and on your RADIUS server.
Enable RADIUS accounting
When selected, the RADIUS server will track and measure the resources a particular user has
consumed, such as system time, the amount of data transmitted and received, and so on.