Flexible Authentication Ordering; Open1X Authentication; Multidomain Authentication - Cisco Catalyst 3750-X Software Configuration Manual

Chapter 11 Configuring IEEE 802.1x Port-Based Authentication
Configuring NAC Layer 2 IEEE 802.1x validation is similar to configuring IEEE 802.1x port-based
authentication except that you must configure a posture token on the RADIUS server. For information
about configuring NAC Layer 2 IEEE 802.1x validation, see the
Validation" section on page 11-58
page
For more information about NAC, see the Network Admission Control Software Configuration Guide.
For more configuration information, see the

Flexible Authentication Ordering

You can use flexible authentication ordering to configure the order of methods that a port uses to
authenticate a new host. MAC authentication bypass and 802.1x can be the primary or secondary
authentication methods, and web authentication can be the fallback method if either or both of those
authentication attempts fail. For more information see the
Ordering" section on page

Open1x Authentication

Open1x authentication allows a device access to a port before that device is authenticated. When open
authentication is configured, a new host on the port can only send traffic to the switch. After the host is
authenticated, the policies configured on the RADIUS server are applied to that host.
You can configure open authentication with these scenarios:
•
•
•
•
For more information see the

Multidomain Authentication

The switch supports multidomain authentication (MDA), which allows both a data device and voice
device, such as an IP phone (Cisco or non-Cisco), to authenticate on the same switch port. The port is
divided into a data domain and a voice domain.
MDA does not enforce the order of device authentication. However, for best results, we recommend that
a voice device is authenticated before a data device on an MDA-enabled port.
Follow these guidelines for configuring MDA:
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•
•
OL-21521-01
11-45.
11-64.
Single-host mode with open authentication–Only one user is allowed network access before and
after authentication.
MDA mode with open authentication–Only one user in the voice domain and one user in the data
domain are allowed.
Multiple-hosts mode with open authentication–Any host can access the network.
Multiple-authentication mode with open authentication–Similar to MDA, except multiple hosts can
be authenticated.
"Configuring the Host Mode" section on page 11-44.
To configure a switch port for MDA, see the
You must configure the voice VLAN for the IP phone when the host mode is set to multidomain. For
more information, see Chapter 17, "Configuring Voice VLAN."
Voice VLAN assignment on an MDA-enabled port is supported.
Understanding IEEE 802.1x Port-Based Authentication
and the "Configuring Periodic Re-Authentication" section on
"Authentication Manager" section on page
"Configuring Flexible Authentication
"Configuring the Host Mode" section on page
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
"Configuring NAC Layer 2 IEEE 802.1x
11-8.
11-44.
11-27