Administrator Guide

Security Commands 998
Syntax
server-key [0 | 7] key-string
no server-key
• 0—An unencrypted key is to be entered.
• 7—An encrypted key is to be entered.
• key-string—The key string in encrypted or unencrypted form. In encrypted
form, it must be 256 characters in length. In unencrypted form, it may be
up to 128 characters in length. Enclose the key string in quotes to use
special characters or embedded blanks.
Default Configuration
By default, no global server key is configured.
Command Modes
Dynamic Radius Configuration
User Guidelines
Only one global server key may be defined. Use the server-key parameter in
the client command to configure a unique server key for each client.
Command History
Introduced in version 6.2.0.1 firmware.
Example
The following example configures RADIUS servers at 1.1.1.1, 2.2.2.2, and
3.3.3.3. It sets the front panel ports to use 802.1x MAC-based authentication.
CoA is configured for two RADIUS servers located at 1.1.1.1 and 2.2.2.2 using
a global shared secret and a third server 3.3.3.3 using a server specific shared
secret. CoA and disconnect requests are accepted from these servers. Any
authentication type is allowed for CoA and disconnect requests.
console#configure terminal
console(config)# aaa new-model
console(config)# aaa authentication dot1x default radius
console(config)# dot1x system-auth-control
console(config)# interface range gi1/0/1-24
console(config-if)# dot1x port-control mac-based