Enabling and disabling login accounting (RADIUS)

Before enabling login (EXEC) accounting, at least one RADIUS server host must be configured on the device by using the radius-server host command.

From privileged EXEC mode, enter global configuration mode.
```
device# configure terminal
```
Enable accounting and send login information to a RADIUS accounting server.
```
device(config)# aaa accounting exec default start-stop radius
```
When this command is entered and a RADIUS server is not configured, an error message is displayed to indicate that no active RADIUS server exists to support accounting.
Return to privileged EXEC mode.
```
device(config)# exit
device#
```

Verify the AAA accounting configuration.

device# show running-config aaa accounting

aaa accounting exec default start-stop radius

(Optional) Once enabled, you can disable sending login information to a RADIUS accounting server.
The following example shows how to disable login accounting by using the no aaa acccounting command.
```
device# configure terminal
device(config)# no aaa accounting exec default start-stop 
device(config)# exit
```
The following example shows how to disable login accounting by using the aaa accounting command specifying the none option.
```
device# configure terminal
device(config)# aaa accounting exec default start-stop none
device(config)# exit
```

Example

The following example shows how to enable login accounting on a RADIUS server and verify the configuration.

device# configure terminal
device(config)# aaa accounting exec default start-stop radius
device(config)# exit
device# show running-config aaa accounting

aaa accounting exec default start-stop radius