Multiple Authentication Mode - Cisco WS-CBS3032-DEL Software Configuration Manual

Chapter 9 Configuring IEEE 802.1x Port-Based Authentication
Figure 9-5
Wireless clients
802.1x Multiple Authentication Mode
Multiple-authentication (multiauth) mode allows one client on the voice VLAN and multiple
authenticated clients on the data VLAN. When a hub or access point is connected to an 802.1x-enabled
port, multiple-authentication mode provides enhanced security over multiple-hosts mode by requiring
authentication of each connected client. For non-802.1x devices, you can use MAC authentication
bypass or web authentication as the fallback method for individual host authentications to authenticate
different hosts through by different methods on a single port.
Multiple-authentication mode also supports MDA functionality on the voice VLAN by assigning
authenticated devices to either a data or voice VLAN, depending on the VSAs received from the
authentication server.
Note When a port is in multiple-authentication mode, the guest VLAN and authentication-failed VLAN
features do not activate.
Beginning with Cisco IOS Release 12.2(55)SE, you can assign a RADIUS-server-supplied VLAN in
multi-auth mode, under these conditions:
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OL-13270-06
Multiple Host Mode Example
Access point
The host is the first host authorized on the port, and the RADIUS server supplies VLAN information.
Subsequent hosts are authorized with a VLAN that matches the operational VLAN.
A host is authorized on the port with no VLAN assignment, and subsequent hosts either have no
VLAN assignment, or their VLAN information matches the operational VLAN.
The first host authorized on the port has a group VLAN assignment, and subsequent hosts either
have no VLAN assignment, or their group VLAN matches the group VLAN on the port. Subsequent
hosts must use the same VLAN from the VLAN group as the first host. If a VLAN list is used, all
hosts are subject to the conditions specified in the VLAN list.
Only one voice VLAN assignment is supported on a multi-auth port.
After a VLAN is assigned to a host on the port, subsequent hosts must have matching VLAN
information or be denied access to the port.
You cannot configure a guest VLAN or an auth-fail VLAN in multi-auth mode.
The behavior of the critical-auth VLAN is not changed for multi-auth mode. When a host tries to
authenticate and the server is not reachable, all authorized hosts are reinitialized in the configured
VLAN.
Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
Understanding IEEE 802.1x Port-Based Authentication
Authentication
server
(RADIUS)
9-13