Users Guide

Version Description
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
Dell(conf)# tacacs-server group group1
Dell(conf-tacacs-group)# tacacs-server host 1.1.1.1 key secr-et
Dell(conf-tacacs-group)# no tacacs-server host 1.1.1.1
Dell(conf-tacacs-group)#
Related
Commands
• aaa authentication login — specifies the login authentication method.
• tacacs-server key — configures a TACACS+ key for the TACACS server.
tacacs-server key
Configure a key for communication between a TACACS+ server and a client.
Syntax
tacacs-server key [encryption-type] key
Security 1766