Users Guide
Version Description
9.4(0.0) Introduced on the S-Series and Z9000.
Usage Information
You can use this command to associate a group of RADIUS servers with a VRF and source interface. You 
can congure the source interface only with the VRF attribute and source interface is optional with the VRF 
attributes.
If VRF is not congured on the RADIUS group, then the group is considered to be on the default VRF. It is 
possible to use the default VRF name; however, you cannot congure the source interface with the default 
VRF as such a conguration results in conicts between the source interfaces corresponding to the 802.1x 
supplicants on that default VRF.
RADIUS groups and VRFs have one-to-one mapping. If a VRF is congured with one RADIUS group, then 
you cannot use the same VRF with another RADIUS group. When the VRF is removed, then the 
corresponding RADIUS group is also removed automatically.
Example
Dell(conf)#radius-server group group1
Dell(conf-radius-group)#radius-server vrf vrf1 source-interface 
tengigabitethernet 1/40
Dell(conf)#radius-server group group2
Dell(conf-radius-group)#radius-server vrf default
TACACS+ Commands
Dell Networking OS supports TACACS+ as an alternate method for login authentication.
tacacs-server group
Creates a group of TACACS servers to be used for Authentication, Authorization, and Accounting..
Syntax
aaa tacacsgroup group-name
To delete a group of TACACS servers, use the no tacacs-server group group-name command
.
Parameters
group-name Enter the name of the TACACS server group.
Defaults Not congured.
Command Modes CONFIGURATION
Command History
This guide is platform-specic. 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 Description
9.7(0.0) Introduced on the S6000–ON.
Security
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