Configuring 802.1X Authentication - Cisco Catalyst 2975 Software Configuration Manual

Configuring 802.1x Authentication

Command
Step 4
interface interface-id
Step 5
switchport mode access
Step 6 authentication violation shutdown |
restrict | protect | replace}
or
dot1x violation-mode {shutdown |
restrict | protect}
Step 7 end
Step 8 show authentication
or
show dot1x
Step 9
copy running-config startup-config
Configuring 802.1x Authentication
To configure 802.1x port-based authentication, you must enable authentication, authorization, and
accounting (AAA) and specify the authentication method list. A method list describes the sequence and
authentication method to be queried to authenticate a user.
To allow VLAN assignment, you must enable AAA authorization to configure the switch for all
network-related service requests.
This is the 802.1x AAA process:
A user connects to a port on the switch.
Step 1
Authentication is performed.
Step 2
VLAN assignment is enabled, as appropriate, based on the RADIUS server configuration.
Step 3
The switch sends a start message to an accounting server.
Step 4
Re-authentication is performed, as necessary.
Step 5
The switch sends an interim accounting update to the accounting server, that is based on the result of
Step 6
re-authentication.
The user disconnects from the port.
Step 7
The switch sends a stop message to the accounting server.
Step 8
Catalyst 2975 Switch Software Configuration Guide
10-40
Chapter 10
Purpose
Specify the port connected to the client that is to be enabled for 802.1x
authentication, and enter interface configuration mode.
Set the port to access mode.
Configure the violation mode. The keywords have these meanings:
shutdown–Error disable the port.
•
restrict–Generate a syslog error.
•
protect–Drop packets from any new device that sends traffic to the
•
port.
replace–Removes the current session and authenticates with the new
•
host.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Configuring IEEE 802.1x Port-Based Authentication
OL-19720-02