Addendum

Enabling AAA Authentication — RADIUS
To enable authentication from the RADIUS server, and use TACACS as a backup, use the following
commands.
1. Enable RADIUS and set up TACACS as backup.
CONFIGURATION mode
aaa authentication enable default radius tacacs
2. Establish a host address and password.
CONFIGURATION mode
radius-server host x.x.x.x key some-password
3. Establish a host address and password.
CONFIGURATION mode
tacacs-server host x.x.x.x key some-password
To get enable authentication from the RADIUS server and use TACACS as a backup, issue the
following commands.
Example of Enabling Authentication from the RADIUS Server
FTOS(config)# aaa authentication enable default radius tacacs
Radius and TACACS server has to be properly setup for this.
FTOS(config)# radius-server host x.x.x.x key <some-password>
FTOS(config)# tacacs-server host x.x.x.x key <some-password>
To use local authentication for enable secret on the console, while using remote authentication on
VTY lines, issue the following commands.
Example of Enabling Local Authentication for the Console and Remote Authentication for VTY Lines
FTOS(config)# aaa authentication enable mymethodlist radius tacacs
FTOS(config)# line vty 0 9
FTOS(config-line-vty)# enable authentication mymethodlist
Server-Side Configuration
• TACACS+ — When using TACACS+, Dell Networking sends an initial packet with service type
SVC_ENABLE, and then sends a second packet with just the password. The TACACS server must have
an entry for username $enable$.
• RADIUS — When using RADIUS authentication, FTOS sends an authentication packet with the
following:
Username: $enab15$
Password: <password-entered-by-user>
Therefore, the RADIUS server must have an entry for this username.
RADIUS
Remote authentication dial-in user service (RADIUS) is a distributed client/server protocol.
This protocol transmits authentication, authorization, and configuration information between a central
RADIUS server and a RADIUS client (the Dell Networking system). The system sends user information to
the RADIUS server and requests authentication of the user and password. The RADIUS server returns one
of the following responses:
• Access-Accept — the RADIUS server authenticates the user.
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Security for M I/O Aggregator