NOTE: The Secondary Server section is only visible if you selected the Enable backup
RADIUS server check box earlier.
• IP Address: Type the IP address of the secondary AAA server.
• Port: Type the port number of the secondary AAA server port number. The default RADIUS
server port number is 1812 and the default RADIUS Accounting server port number is
1813.
• Shared Secret: Type the AAA shared secret.
• Confirm Secret: Retype the shared secret to confirm.
11. Configure the Health Check Policy options.
These options define the health monitoring settings of the primary and secondary RADIUS
servers, when the controller is configured as RADIUS proxy for RADIUS Authentication and
Accounting messages.
DescriptionOption
Set the time (in seconds) after which, if the AAA server does not respond to
a request, the controller will initiate the "zombie period" (see below). If the
Response
Window
primary AAA server does not respond to RADIUS messages sent after
Response Window expires, the controller will forward the retransmitted RADIUS
messages to the secondary AAA server. Note that the zombie period is not
started immediately after the Response Window expires, but after the
configured Response Window plus ¼ of the configured Zombie Period. The
default Response Window is 20 seconds.
Set the time (in seconds) after which, if the AAA server does not respond to
ANY packets during the zombie period, it will be considered to inactive or
Zombie
Period
unreachable. An AAA server that is marked "zombie" (inactive or unreachable)
will be used for proxying with a low priority. If there are other live AAA servers,
the controller will attempt to use these servers first instead of the zombie AAA
server. The controller will only proxy requests to a zombie server only when
there are no other live servers. Any request that is proxied to an AAA server
will continue to be sent to that AAA server until the home server is marked
inactive or unreachable. At that point, the request will fail over to another server,
if a live AAA server is available. The default Zombie Period is 40 seconds.
Set the time (in seconds) after which, if no RADIUS messages are proxied to
the AAA server after it has been marked as inactive or unreachable, the
Revive
Interval
controller will mark the AAA server as active again (and assume that it has
become reachable again). The default Revive Interval is 120 seconds.
Click Yes to respond with a reject message to the NAS if no response is
received from the RADIUS server. Click No to skip sending a response.
CAUTION: To ensure that the RADIUS failover mechanism functions correctly,
either accept the default values for the Response Window, Zombie Period,
No
Response
Fail
and Revive Interval, or make sure that the value for Response Window is
always higher than the value for RADIUS NAS request timeout multiplied by
the value for RADIUS NAS max number of retries. For information on configuring
SmartCell Gateway 200/Virtual SmartZone High-Scale for Release 3.4.1 Administrator Guide
390
Overview of the Captive Portal
Configuring the Captive Portal
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