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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter       Administering the Wireless Device
Controlling Access Point Access with RADIUS
8. copy running-config startup-config
9. aaa authorization exec radius
DETAILED STEPS
Command Purpose
Step 1
configure terminal Enters global configuration mode.
Step 2
aaa new-model Enables AAA.
Step 3
radius-server host {hostname | 
ip-address} [auth-port port-number] 
[acct-port port-number] [timeout 
seconds] [retransmit retries] [key 
string]
Specifies the IP address or hostname of the remote RADIUS server host.
• (Optional) For auth-port port-number, specify the user datagram 
protocol (UDP) destination port for authentication requests.
• (Optional) For acct-port port-number, specify the UDP destination 
port for accounting requests.
• (Optional) For timeout seconds, specify the time interval that the 
wireless device waits for the RADIUS server to reply before 
retransmitting. The range is 1 to 1000. This setting overrides the 
radius-server timeout global configuration command setting. If no 
timeout is set with the radius-server host command, the setting of 
the radius-server timeout command is used.
• (Optional) For retransmit retries, specify the number of times that a 
RADIUS request is resent to a server if that server is not responding 
or responding slowly. The range is 1 to 1000. If no retransmit value is 
set with the radius-server host command, the setting of the 
radius-server retransmit global configuration command is used.
• (Optional) For key string, specify the authentication and encryption 
key used between the wireless device and the RADIUS daemon 
running on the RADIUS server. 
Note The key is a text string that must match the encryption key that is 
used on the RADIUS server. Always configure the key as the last 
item in the radius-server host command. Leading spaces are 
ignored, but spaces within and at the end of the key are used. If 
you use spaces in your key, do not enclose the key in quotation 
marks unless the quotation marks are part of the key.
To configure the wireless device to recognize more than one host entry 
that is associated with a single IP address, enter this command as many 
times as necessary, making sure that each UDP port number is different. 
The wireless device software searches for hosts in the order in which you 
specify them. Set the timeout, retransmit, and encryption key values to use 
with the specific RADIUS host.
Step 4
aaa group server radius group-name Defines the AAA server-group with a group name.
This command puts the wireless device in a server group configuration 
mode.
Step 5
server ip-address  Associates a particular RADIUS server with the defined server group. 
Repeat this step for each RADIUS server in the AAA server group.
Each server in the group must be previously defined in Step 2.