10
Configuring Port-Based and Client-Based
Access Control (802.1X)
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
Why Use Port-Based or Client-Based Access Control? . . . . . . . . . . . 10-3
General Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
User Authentication Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5
General 802.1X Authenticator Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 10-8
Example of the Authentication Process . . . . . . . . . . . . . . . . . . . . . . . . 10-8
VLAN Membership Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-9
General Operating Rules and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11
General Setup Procedure for Port-Based Access Control (802.1X) . . . . 10-13
Do These Steps Before You Configure 802.1X Operation . . . . . . . . 10-13
Overview: Configuring 802.1X Authentication on the Switch . . . . . 10-13
Configuring Switch Ports as 802.1X Authenticators . . . . . . . . . . . . . . . . 10-15
1. Enable 802.1X Authentication on Selected Ports . . . . . . . . . . . . . 10-15
3. Configure the 802.1X Authentication Method . . . . . . . . . . . . . . . . 10-19
4. Enter the RADIUS Host IP Address(es) . . . . . . . . . . . . . . . . . . . . . 10-20
5. Enable 802.1X Authentication on the Switch . . . . . . . . . . . . . . . . 10-21
802.1X Open VLAN Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-21
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-21
VLAN Membership Priorities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22
Use Models for 802.1X Open VLAN Modes . . . . . . . . . . . . . . . . . . . . 10-23
Operating Rules for Authorized-Client
and Unauthorized-Client VLANs
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-27
Setting Up and Configuring 802.1X Open VLAN Mode . . . . . . . . . . . 10-31
802.1X Open VLAN Operating Notes . . . . . . . . . . . . . . . . . . . . . . . . . 10-35
10-1