D-Link DES-3550 Command Line Interface Reference Manual page 271

create authen server_host
Purpose Used to create an authentication server host.
Syntax
create authen server_host <ipaddr> protocol [tacacs | xtacacs | tacacs+ |
radius] {port <int 1-65535> | key [<key_string 254> | none] | timeout <int 1-
255> | retransmit < 1-255>}
Description This command will create an authentication server host for the
TACACS/XTACACS/TACACS+/RADIUS security protocols on the Switch. When
a user attempts to access the Switch with authentication protocol enabled, the
Switch will send authentication packets to a remote
TACACS/XTACACS/TACACS+/RADIUS server host on a remote host. The
TACACS/XTACACS/TACACS+/RADIUS server host will then verify or deny the
request and return the appropriate message to the Switch. More than one
authentication protocol can be run on the same physical server host but,
remember that TACACS/XTACACS/TACACS+/RADIUS are separate entities
and are not compatible with each other. The maximum supported number of
server hosts is 16.
server_host <ipaddr> - The IP address of the remote server host to add.
Parameters
protocol – The protocol used by the server host. The user may choose one of
the following:
port <int 1-65535> - Enter a number between 1 and 65535 to define the virtual
port number of the authentication protocol on a server host. The default port
number is 49 for TACACS/XTACACS/TACACS+ servers and 1812 and 1813 for
RADIUS servers but the user may set a unique port number for higher security.
key <key_string 254> - Authentication key to be shared with a configured
TACACS+ or RADIUS server only. Specify an alphanumeric string up to 254
characters.
timeout <int 1-255> - Enter the time in seconds the Switch will wait for the server
host to reply to an authentication request. The default value is 5 seconds.
retransmit <int 1-255> - Enter the value in the retransmit field to change how
many times the device will resend an authentication request when the server
does not respond.
Restrictions Only administrator-level users can issue this command.
DES-3550 Layer 2 Fast Ethernet Switch
tacacs – Enter this parameter if the server host utilizes the TACACS
protocol.
xtacacs - Enter this parameter if the server host utilizes the XTACACS
protocol.
tacacs+ - Enter this parameter if the server host utilizes the TACACS+
protocol.
radius - Enter this parameter if the server host utilizes the RADIUS
protocol.
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