Cisco Catalyst 3560-X Series, Software Configuration Manual

Page: 333 / 1538

1-45
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring IEEE 802.1x Port-Based Authentication
Configuring 802.1x Authentication
Step 5
Re-authentication is performed, as necessary.
Step 6 The switch sends an interim accounting update to the accounting server that is based on the result of
re-authentication.
Step 7
The user disconnects from the port.
Step 8 The switch sends a stop message to the accounting server.
Beginning in privileged EXEC mode, follow these steps to configure 802.1x port-based authentication:
Command Purpose
Step 1 configure terminal Enter global configuration mode.
Step 2
aaa new-model Enable AAA.
Step 3 aaa authentication dot1x { default }
method1
Create an 802.1x authentication method list.
To create a default list that is used when a named list is not specified in
the authentication command, use the default keyword followed by the
method that is to be used in default situations. The default method list is
automatically applied to all ports.
For method1 , enter the group radius keywords to use the list of all
RADIUS servers for authentication.
Note Though other keywords are visible in the command-line help
string, only the
group radius keywords are supported.
Step 4
dot1x system-auth-control Enable 802.1x authentication globally on the switch.
Step 5 aaa authorization network { default }
group radius
(Optional) Configure the switch to use user-RADIUS authorization for all
network-related service requests, such as per-user ACLs or VLAN
assignment.
Note For per-user ACLs, single-host mode must be configured. This
setting is the default.
Step 6
radius-server host ip-address (Optional) Specify the IP address of the RADIUS server.
Step 7 radius-server key string (Optional) Specify the authentication and encryption key used between
the switch and the RADIUS daemon running on the RADIUS server.
Step 8 interface interface-id Specify the port connected to the client that is to be enabled for
IEEE 802.1x authentication, and enter interface configuration mode.
Step 9
switchport mode access (Optional) Set the port to access mode only if you configured the RADIUS
server in Step 6 and Step 7.
Step 10
dot1x port-control auto Enable 802.1x authentication on the port.
For feature interaction information, see the “802.1x Authentication
Configuration Guidelines” section on page 1-39 .
Step 11 dot1x pae authenticator Set the interface Port Access Entity to act only as an authenticator and
ignore messages meant for a supplicant.
Step 12
end Return to privileged EXEC mode.
Step 13 show authentication Verify your entries.
Step 14 copy running-config startup-config (Optional) Save your entries in the configuration file.