Administrator Guide

Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100-ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100-ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000–ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.4.1.0 Added support for IPv6.
8.3.7.0 Introduced on the S4810.
7.7.1.0 Authentication key length increased to 42 characters.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
pre-6.2.1.1 Introduced on the E-Series.
Usage Information
To list multiple TACACS+ servers to be used by the aaa authentication login command, configure this
command multiple times.
If you are not configuring the switch as a TACACS+ server, you do not need to configure the port, timeout
and key optional parameters. If you do not configure a key, the key assigned in the tacacs-server key
command is used.
You can use duplicate host names or IP addresses among TACACS groups. However, you cannot use duplicate
host names or IP addresses within the same TACACS group.
If a VRF is not configured on the TACACS group, then servers configured in the group are considered to be on
the default VRF. TACACS servers that are configured in the CONFIGURATION mode are also considered to be on
the default VRF.
For AAA servers to use a group of TACACS servers, you must explicitly configure the group using the aaa
tacacs group group-name command. The order in which the TACACS servers are tried depends on the
order in which they are configured.
Example
DellEMC(conf)# tacacs-server group group1
DellEMC(conf-tacacs-group)# tacacs-server host 1.1.1.1 key secr-et
DellEMC(conf-tacacs-group)# no tacacs-server host 1.1.1.1
DellEMC(conf-tacacs-group)#
Related
Commands
• aaa authentication login — specifies the login authentication method.
• tacacs-server key — configures a TACACS+ key for the TACACS server.
1418 Security