Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.14.1.0 - Page 790

Enabling AAA Accounting The aaa accounting command allows you to create a record for any or all of the accounting functions monitored. To enable AAA accounting, use the following command. • Enable AAA accounting and create a record for monitoring the accounting function. CONFIGURATION mode aaa accounting {commands | exec | suppress | system level} {default | name} {start-stop | wait-start | stop-only} {tacacs+} The variables are: - system: sends accounting information of any other AAA configuration. - exec: sends accounting information when a user has logged in to EXEC mode. - command level: sends accounting of commands executed at the specified privilege level. - suppress: Do not generate accounting records for a specific type of user. - default | name: enter the name of a list of accounting methods. - start-stop: use for more accounting information, to send a start-accounting notice at the beginning of the requested event and a stop-accounting notice at the end. - wait-start: ensures that the TACACS+ security server acknowledges the start notice before granting the user's process request. - stop-only: use for minimal accounting; instructs the TACACS+ server to send a stop record accounting notice at the end of the requested user process. - tacacs+: designate the security service. Currently, Dell EMC Networking OS supports only TACACS+. Suppressing AAA Accounting for Null Username Sessions When you activate AAA accounting, the Dell EMC Networking OS software issues accounting records for all users on the system, including users whose username string is NULL because of protocol translation. 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 Configuring Accounting of EXEC and Privilege-Level Command Usage The network access server monitors the accounting functions defined in the TACACS+ attribute/value (AV) pairs. • Configure AAA accounting to monitor accounting functions defined in TACACS+. CONFIGURATION mode aaa accounting system default start-stop tacacs+ aaa accounting command 15 default start-stop tacacs+ System accounting can use only the default method list. 790 Security