39-20
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 39 Configuring the Switch Access Using AAA
Configuring Authentication on the Switch
To specify one or more TACACS+ servers, perform this task in privileged mode:
This example shows how to specify TACACS+ servers and verify the configuration:
Console> (enable) set tacacs server 172.20.52.3
172.20.52.3 added to TACACS server table as primary server.
Console> (enable) set tacacs server 172.20.52.2 primary
172.20.52.2 added to TACACS server table as primary server.
Console> (enable) set tacacs server 172.20.52.10
172.20.52.10 added to TACACS server table as backup server.
Console> (enable)
Console> (enable) show tacacs
Login Authentication: Console Session Telnet Session
--------------------- ---------------- ----------------
tacacs disabled disabled
radius disabled disabled
local enabled(primary) enabled(primary)
Enable Authentication: Console Session Telnet Session
---------------------- ----------------- ----------------
tacacs disabled disabled
radius disabled disabled
local enabled(primary) enabled(primary)
Tacacs key:
Tacacs login attempts: 3
Tacacs timeout: 5 seconds
Tacacs direct request: disabled
Tacacs-Server Status
---------------------------------------- -------
172.20.52.3
172.20.52.2 primary
172.20.52.10
Console> (enable)
Enabling TACACS+ Authentication
Note Specify at least one TACACS+ server before enabling TACACS+ authentication on the switch. For
information on specifying a TACACS+ server, see the “Specifying TACACS+ Servers” section on
page 39-19.
You can enable TACACS+ authentication for login and enable access to the switch. If desired, you can
use the console and telnet keywords to specify that TACACS+ authentication is used only on the console
or Telnet connections. If you are using both RADIUS and TACACS+, you can use the primary keyword
to force the switch to try TACACS+ authentication first.
Task Command
Step 1
Specify the IP address of one or more TACACS+
servers.
set tacacs server ip_addr [primary]
Step 2
Verify the TACACS+ configuration. show tacacs
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