Configuring Security
Configuring RADIUS Parameters
Cisco Small Business 300 Series Managed Switch Administration Guide  197
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• Server IP Address—Enter the TACACS+ server IP address.
• Priority—Enter the order that this TACACS+ server is used. Zero is the 
highest priority TACACS+ server and is the first server used. If it cannot 
establish a session with the high priority server, the switch will try the next 
highest priority server. 
• Key String—Enter the authentication and encryption key for the TACACS+ 
server. The key must match the encryption key configured on the TACACS+ 
server. Select Use Default to use the key string defined under the TACACS+ 
Default Parameters.
• Timeout for Reply—Enter the amount of time that passes before the 
connection between the switch and the TACACS+ server times out. Select 
Use Default to use the default value displayed on the page.
• Authentication IP Port—Enter the port number through which the 
TACACS+ session occurs. The default is port 49.
• Single Connection—Select to enable a single open connection between 
the switch and the TACACS+ server. 
STEP  4 Click Apply. The TACACS+ server is added, and the switch is updated.
Configuring RADIUS Parameters
Remote Authorization Dial-In User Service (RADIUS) servers provide a centralized 
802.1X or MAC-based network access control. The switch is a RADIUS client that 
relies on a RADIUS server to provide centralized security, authorizing and 
authenticating users attempting to access and administer the switch. 
For the RADIUS server to grant access to the web-based switch configuration 
utility, the RADIUS server must return cisco-avpair = shell:priv-lvl=15.
Use this page to enable the configuration of the RADIUS server parameters the 
switch uses to communicate with the servers.