Cisco Cisco IOS Software Release 12.2(27)SBC

When using the RADIUS automated tester, verify that the test packets being sent by the network access 
server (NAS) to the AAA servers are being responded to. If the servers are not configured correctly, the 
packets may be dropped and the server erroneously marked dead.

It is recommended that a test user, one that is not defined on the RADIUS server, be used for RADIUS 
server automated testing to protect against security issues that may arise if the test user is not correctly 
configured.

If you want to check load balancing transactions at a specific point in time, you can use the 
test aaa group command.

This section contains the following procedures that allow you to configure load balancing:

Use the following task to enable RADIUS server load balancing for a named server group.

configure terminal

radius-server host {hostname | ip-address} [test username user-name] [auth-port port-number] 
[ignore-auth-port] [acct-port port-number] [ignore-acct-port] [idle-time seconds]

aaa group server radius group-name

load-balance method least-outstanding [batch-size number] [ignore-preferred-server] 

Router> enable

Enables privileged EXEC mode. 

Enter your password if prompted.

 terminal

Router# configure terminal

Enters global configuration mode.