Specifications

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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-5260-01
Chapter 12 Configuring RADIUS and TACACS+ Servers
Configuring and Enabling RADIUS
Selecting the CSID Format
You can select the format for MAC addresses in Called-Station-ID (CSID) and Calling-Station-ID
attributes in RADIUS packets. Use the dot11 aaa csid global configuration command to select the CSID
format. Table 12-1 lists the format options with corresponding MAC address examples.
To return to the default CSID format, use the no form of the dot11 aaa csid command, or enter
dot11 aaa csid default.
Note You can also use the wlccp wds aaa csid command to select the CSID format.
Configuring Settings for All RADIUS Servers
Beginning in privileged EXEC mode, follow these steps to configure global communication settings
between the access point and all RADIUS servers:
Table 12-1 CSID Format Options
Option MAC Address Example
default 0007.85b3.5f4a
ietf 00-07-85-b3-5f-4a
unformatted 000785b35f4a
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
radius-server key string Specify the shared secret text string used between the access point and all
RADIUS servers.
Note The key is a text string that must match the encryption key used on
the RADIUS server. 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.
Step 3
radius-server retransmit retries Specify the number of times the access point sends each RADIUS request
to the server before giving up. The default is 3; the range 1 to 1000.
Step 4
radius-server timeout seconds Specify the number of seconds an access point waits for a reply to a
RADIUS request before resending the request. The default is 5 seconds; the
range is 1 to 1000.
Step 5
radius-server deadtime minutes Use this command to cause the Cisco IOS software to mark as “dead” any
RADIUS servers that fail to respond to authentication requests, thus
avoiding the wait for the request to time out before trying the next
configured server. A RADIUS server marked as dead is skipped by
additional requests for the duration of minutes that you specify, up to a
maximum of 1440 (24 hours).
Note If you set up more than one RADIUS server, you must configure the
RADIUS server deadtime for optimal performance.