Authenticating Users
Summit 200 Series Switch Installation and User Guide 65
Configuring TACACS+
Terminal Access Controller Access Control System Plus (TACACS+) is a mechanism for providing
authentication, authorization, and accounting on a centralized server, similar in function to the RADIUS
client. The ExtremeWare version of TACACS+ is used to authenticate prospective users who are
attempting to administer the switch. TACACS+ is used to communicate between the switch and an
authentication database.
NOTE
You cannot use RADIUS and TACACS+ at the same time.
You can configure two TACACS+ servers, specifying the primary server address, secondary server
address, and UDP port number to be used for TACACS+ sessions.
Table 20 describes the commands that are used to configure TACACS+.
Table 20: TACACS+ Commands
Command Description
config tacacs [primary | secondary] server
[<ipaddress> | <hostname>] {<udp_port>} client-ip
<ipaddress>
Configure the server information for a
TACACS+ server. Specify the following:
• primary | secondary — Specifies
primary or secondary server
configuration. To remove a server, use
the address 0.0.0.0.
• <ipaddress> | <hostname> —
Specifies the TACACS+ server.
• <udp_port> — Optionally specifies
the UDP port to be used.
• client-ip — Specifies the IP
address used by the switch to identify
itself when communicating with the
TACACS+ server.
config tacacs [primary | secondary] shared-secret
{encrypted} <string>
Configures the shared secret string used
to communicate with the TACACS+ server.
config tacacs-accounting [primary | secondary]
server [<ipaddress> | <hostname>] {<udp_port>}
client-ip <ipaddress>
Configures the TACACS+ accounting
server. You can use the same server for
accounting and authentication.
config tacacs-accounting [primary | secondary]
shared-secret {encrypted} <string>
Configures the shared secret string used
to communicate with the TACACS+
accounting server.
disable tacacs Disables TACACS+.
disable tacacs-accounting Disables TACACS+ accounting.
disable tacacs-authorization Disables CLI command authorization.
enable tacacs Enables TACACS+. Once enabled, all CLI
logins are sent to one of the two
TACACS+ server for login name
authentication and accounting.
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