12
Configuring Port-Based and
User-Based Access Control (802.1X)
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
Why Use Port-Based or User-Based Access Control? . . . . . . . . . . . . 12-3
General Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
User Authentication Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-4
802.1X User-Based Access Control . . . . . . . . . . . . . . . . . . . . . . . . 12-4
802.1X Port-Based Access Control . . . . . . . . . . . . . . . . . . . . . . . . 12-5
Alternative To Using a RADIUS Server . . . . . . . . . . . . . . . . . . . . . 12-6
Accounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6
General 802.1X Authenticator Operation . . . . . . . . . . . . . . . . . . . . . . 12-9
Example of the Authentication Process . . . . . . . . . . . . . . . . . . . . . . . . 12-9
VLAN Membership Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-10
General Operating Rules and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . 12-12
General Setup Procedure for 802.1X Access Control . . . . . . . . . . 12-15
Do These Steps Before You Configure 802.1X Operation . . . . . . . . 12-15
Overview: Configuring 802.1X Authentication on the Switch . . . . . 12-18
Configuring Switch Ports as 802.1X Authenticators . . . . . . . . . . . 12-19
1. Enable 802.1X Authentication on Selected Ports . . . . . . . . . . . . . 12-20
A. Enable the Selected Ports as Authenticators and Enable
the (Default) Port-Based Authentication . . . . . . . . . . . . . . . . . . 12-20
B. Specify User-Based Authentication or Return to
Port-Based Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-21
Example: Configuring User-Based 802.1X Authentication . . . . 12-22
Example: Configuring Port-Based 802.1X Authentication . . . . 12-22
2. Reconfigure Settings for Port-Access . . . . . . . . . . . . . . . . . . . . . . . 12-22
12-1
