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radius-server host {hostname | ip-address} [auth-port port-number]
[retransmit retries] [timeout seconds] [key [encryption-type] key]
Configure the optional communication parameters for the specific host:
– auth-port port-number: the range is from 0 to 65335. Enter a UDP port number. The default is
1812.
– retransmit retries: the range is from 0 to 100. Default is 3.
– timeout seconds: the range is from 0 to 1000. Default is 5 seconds.
– key [encryption-type] key: enter 0 for plain text or 7 for encrypted text, and a string for the
key. The key can be up to 42 characters long. This key must match the key configured on the
RADIUS server host.
If you do not configure these optional parameters, the global default values for all RADIUS host are
applied.
To specify multiple RADIUS server hosts, configure the radius-server host command multiple times.
If you configure multiple RADIUS server hosts, the system attempts to connect with them in the order in
which they were configured. When the switch authenticates a user, the software connects with the
RADIUS server hosts one at a time, until a RADIUS server host responds with an accept or reject response.
If you want to change an optional parameter setting for a specific host, use the radius-server host
command. To change the global communication settings to all RADIUS server hosts, refer to Setting
Global Communication Parameters for all RADIUS Server Hosts.
To view the RADIUS configuration, use the show running-config radius command in EXEC Privilege
mode.
To delete a RADIUS server host, use the no radius-server host {hostname | ip-address}
command.
Setting Global Communication Parameters for all RADIUS Server Hosts
You can configure global communication parameters (auth-port, key, retransmit, and timeout
parameters) and specific host communication parameters on the same system.
However, if you configure both global and specific host parameters, the specific host parameters override
the global parameters for that RADIUS server host.
To set global communication parameters for all RADIUS server hosts, use the following commands.
• Set a time interval after which a RADIUS host server is declared dead.
CONFIGURATION mode
radius-server deadtime seconds
– seconds: the range is from 0 to 2147483647. The default is 0 seconds.
• Configure a key for all RADIUS communications between the system and RADIUS server hosts.
CONFIGURATION mode
radius-server key [encryption-type] key
– encryption-type: enter 7 to encrypt the password. Enter 0 to keep the password as plain text.
– key: enter a string. The key can be up to 42 characters long. You cannot use spaces in the key.
• Configure the number of times the system retransmits RADIUS requests.
CONFIGURATION mode
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