Dell POWERCONNECT 6200 SERIES Configuration Manual page 119

Figure 5-3. RADIUS Servers in a Network
When a user attempts to log in, the switch prompts for a username and password. The switch then
attempts to communicate with the primary RADIUS server at 10.10.10.10. Upon successful connection
with the server, the login credentials are exchanged over an encrypted channel. The server grants or
denies access, which the switch honors, and either allows or does not allow the user to access the switch.
If neither of the two servers can be contacted, the switch searches its local user database for the user.
console(config)#radius-server host 10.10.10.10
console(Config-radius)#key secret1
console(Config-radius)#priority 1
console(Config-radius)#exit
console(config)#radius-server host 11.11.11.11
console(Config-radius)#key secret2
console(Config-radius)#priority 50
console(Config-radius)#exit
console(config)#aaa authentication login radiusList radius local
console(config)#aaa authentication dot1x default radius
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Device Security