Administrator Guide

Suppressing AAA Accounting for Null Username
Sessions
When you activate AAA accounting, the Dell Networking OS software issues accounting records for all users on the system,
including users whose username string, because of protocol translation, is NULL.
An example of this is a user who comes in on a line where the AAA authentication login method-list none command is
applied. To prevent accounting records from being generated for sessions that do not have usernames associated with them,
use the following command.
● Prevent accounting records from being generated for users whose username string is NULL.
CONFIGURATION mode
aaa accounting suppress null-username
TACACS+ Commands
Dell Networking OS supports TACACS+ as an alternate method for login authentication.
TACACS+ Accounting
Enable AAA Accounting and create a record for monitoring the accounting function.
Syntax
aaa accounting {system | exec | commands level} {name | default}{start-stop
| wait-start | stop-only} {tacacs+}
To disable AAA Accounting, use the
no aaa accounting {system | exec | command level} {name | default}{start-
stop | wait-start | stop-only} {tacacs+}
command
Defaults.
Parameters
system Enter the keyword system to send accounting information of any other AAA
configuration.
exec Enter the keyword exec to send accounting information when a user has logged in
to EXEC mode.
commands level Enter the keyword command then a privilege level for accounting of commands
executed at that privilege level.
name | default Enter one of the following:
● For name, enter a user-defined name of a list of accounting methods.
● For default, the default accounting methods used.
start-stop Enter the keywords start-stop to send a “start accounting” notice at the beginning
of the requested event and a “stop accounting” notice at the end of the event.
wait-start Enter the keywords wait-start to ensure that the TACACS+ security server
acknowledges the start notice before granting the user’s process request.
stop-only Enter the keywords stop-only to instruct the TACACS+ security server to send a
“stop record accounting” notice at the end of the requested user process.
tacacs+ Enter the keyword tacacs+ to use TACACS+ data for accounting.
Dell Networking OS currently only supports TACACS+ accounting.
Defaults None
Command Modes CONFIGURATION
270 Security