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Catalyst 2928 Switch Software Configuration Guide
OL-23389-01
Chapter 9 Configuring IEEE 802.1x Port-Based Authentication
Understanding IEEE 802.1x Port-Based Authentication
•
Using IEEE 802.1x Authentication with Guest VLAN, page 9-11
•
Using IEEE 802.1x Authentication with Restricted VLAN, page 9-12
•
Using IEEE 802.1x Authentication with Voice VLAN Ports, page 9-13
•
Using IEEE 802.1x Authentication with Port Security, page 9-13
•
Using IEEE 802.1x Authentication with MAC Authentication Bypass, page 9-14
•
Device Roles
With IEEE 802.1x port-based authentication, the devices in the network have specific roles, as shown in
.
Figure 9-1
IEEE 802.1x Device Roles
•
Client
—the device (workstation) that requests access to the LAN and switch services and responds
to requests from the switch. The workstation must be running IEEE 802.1x-compliant client
software such as that offered in the Microsoft Windows XP operating system. (The client is the
supplicant
in the IEEE 802.1x standard.)
Note
To resolve Windows XP network connectivity and IEEE 802.1x authentication issues, read
the Microsoft Knowledge Base article at this URL:
http://support.microsoft.com/support/kb/articles/Q303/5/97.ASP
•
Authentication server
—performs the actual authentication of the client. The authentication server
validates the identity of the client and notifies the switch whether or not the client is authorized to
access the LAN and switch services. Because the switch acts as the proxy, the authentication service
is transparent to the client. In this release, the RADIUS security system with Extensible
Authentication Protocol (EAP) extensions is the only supported authentication server. It is available
in Cisco Secure Access Control Server Version 3.0 or later. RADIUS operates in a client/server
model in which secure authentication information is exchanged between the RADIUS server and
one or more RADIUS clients.
101229
Workstations
(clients)
Authentication
server
(RADIUS)
