CommandHistoryThis guide is platform-specific. For command information about other platforms,refer to the relevant Dell Networking OS Command Line Reference Guide.The following is a list of the Dell Networking OS version history for this command.Version 9.5(0.0) Added support for roles on the Z9000, S6000, S4820T,S4810, MXL.Version 9.2(1.0) Introduced on the Z9500.Version 9.0.2.0 Introduced on the S6000.Version8.3.19.0Introduced on the S4820T.Version 8.3.11.1 Introduced on the Z9000.Version 8.3.7.0 Introduced on the S4810.Version 7.6.1.0 Introduced on the S-Series.Version 7.5.1.0 Introduced on the C-Series.Version 6.3.1.0 Introduced on the E-Series.RelatedCommandsaaa accounting — enables AAA Accounting and creates a record for monitoring theaccounting function.aaa accounting suppressPrevent the generation of accounting records of users with the user name value of NULL.S4810Syntax aaa accounting suppress null-usernameTo permit accounting records to users with user name value of NULL, use the noaaa accounting suppress null-username command.Defaults Accounting records are recorded for all users.CommandModesCONFIGURATIONCommandHistoryThis guide is platform-specific. For command information about other platforms,refer to the relevant Dell Networking OS Command Line Reference Guide.The following is a list of the Dell Networking OS version history for this command.Version 9.0.2.0 Introduced on the S6000.Version8.3.19.0Introduced on the S4280T.Version 8.3.11.1 Introduced on the Z9000.Security 1443