iES26GF
User’s
Manual
UM-iES26GF-1.2.3-EN.docx
Pages 115 of 169
AAA
AAA
–
Authentication Server Configuration
Authentication, Authorization and Accounting (AAA)
—
this page allows you to configure the AAA
server.
Figure 121 - Authentication Server Configuration interface
The following table describes the labels for the
Authentication Server Configuration
screen.
Label
Description
Timeout
The Timeout, which can be set to a number between 3 and 3600 seconds, is the
maximum time to wait for a reply from a server.
If the server does not reply within this time frame, we will consider it to be dead and
continue with the next enabled server (if any).
RADIUS servers are using the UDP protocol, which is unreliable by design. To cope
with lost frames, the timeout interval is divided into 3 subintervals of equal length. If
a reply is not received within the subinterval, the request is transmitted again. This
algorithm causes the RADIUS server to be queried up to 3 times before it is
considered to be dead.
Dead Time
The
Dead Time
, which can be set to a number between 0 and 3600 seconds, is the
period during which the switch will not send new requests to a server that has failed
to respond to a previous request. This will stop the switch from continually trying to
contact a server that it has already determined as dead.
Setting the
Dead Time
to a value greater than 0 (zero) will enable this feature, but
only if more than one server has been configured.
Radius Authentication Server Configuration
#
The RADIUS Authentication Server number for which the configuration below
applies.
Enabled
Enable the RADIUS Authentication Server by checking this box.
IP Address
The IP address of the RADIUS Authentication Server. IP address is expressed in
dotted decimal notation
.
Port
The UDP port to use on the RADIUS Authentication Server. If the port is set to 0
(zero), the default port (1812) is used on the RADIUS Authentication Server.
Secret
