Default Radius Configuration; Identifying The Radius Server Host - Cisco WS-C3550-12G Software Configuration Manual

Controlling Switch Access with RADIUS
software uses the first method listed to authenticate, to authorize, or to keep accounts on users; if that
method does not respond, the software selects the next method in the list. This process continues until
there is successful communication with a listed method or the method list is exhausted.
You should have access to and should configure a RADIUS server before configuring RADIUS features
on your switch.
This section contains this configuration information:
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Default RADIUS Configuration

RADIUS and AAA are disabled by default.
To prevent a lapse in security, you cannot configure RADIUS through a network management
application. When enabled, RADIUS can authenticate users accessing the switch through the CLI.

Identifying the RADIUS Server Host

Switch-to-RADIUS-server communication involves several components:
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You identify RADIUS security servers by their host name or IP address, host name and specific UDP
port numbers, or their IP address and specific UDP port numbers. The combination of the IP address and
the UDP port number creates a unique identifier, allowing different ports to be individually defined as
RADIUS hosts providing a specific AAA service. This unique identifier enables RADIUS requests to be
sent to multiple UDP ports on a server at the same IP address.
Catalyst 3550 Multilayer Switch Software Configuration Guide
6-20
Default RADIUS Configuration, page 6-20
Identifying the RADIUS Server Host, page 6-20
Configuring RADIUS Login Authentication, page 6-23
Defining AAA Server Groups, page 6-24
Configuring RADIUS Authorization for User Privileged Access and Network Services, page 6-26
(optional)
Starting RADIUS Accounting, page 6-27
Configuring Settings for All RADIUS Servers, page 6-28
Configuring the Switch to Use Vendor-Specific RADIUS Attributes, page 6-28
Configuring the Switch for Vendor-Proprietary RADIUS Server Communication, page 6-29
(optional)
Host name or IP address
Authentication destination port
Accounting destination port
Key string
Timeout period
Retransmission value
Chapter 6
(required)
(required)
(optional)
(optional)
(optional)
Administering the Switch
(optional)
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