243
Parameter
Description
Timeout:
Timeout is the maximum time to wait for a reply from a server. It can be
set to a number between 3 and 3600 seconds.
If the server does not reply within this timeframe, we will consider it to be dead and
continue with the next enabled server (if any).
The RADIUS servers are using the UDP protocol. It is unreliable by design. In order 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:
Dead Time is the period during which the switch will not send new
requests to a server that has failed to respond to a previous request. It can be set to
a number between 0 and 3600 seconds. 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.
Authorization and Accounting Configuration
Authorization
:
Every CLI commands will be authorized by the server when
it’s enabled. The authorization table on the server is able to configure
which CLI command can pass successfully. For example, the server is set to
accept the STP command but deny the VLAN command. The server will block the
command related to the STP which is entered by user, but it can allow the VLAN
command to configure successfully when user enters the VLAN command.
Fallback to Local Authorization:
Enabled to allow the user who typed the wrong
account or password to login successfully when the user account is on the local
authorization list of the local switch. For example, when the user entered the wrong
account or password, the server will refer to the account information on
the local end of switch. If the account is recorded on the local switch, the user will
be authorized to login with the privilege level set on the local switch.
Accounting:
Enabled to record all the commands that the user entered. All the log
data will be recorded on the server when it’s enabled. For instance, login time, log
out time, IGMP setting, VLAN setting, etc.
RADIUS Authentication Server Configuration
The table has one row for each RADIUS authentication server and a number of
columns, which are:
#:
The RADIUS authentication server number for which the configuration below
applies.
Enabled:
Enables the RADIUS authentication server by checking this box.
IP Address/Hostname:
The IP address or hostname of the RADIUS authentication
server. The IP address is expressed in dotted decimal notation.
Port:
The UDP port used 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:
The secret - up to 29 characters long - shared between the RADIUS
authentication server and the switch stack.