12-23
Cisco IE 3000 Switch Software Configuration Guide
OL-13018-03
Chapter 12 Configuring IEEE 802.1x Port-Based Authentication
Understanding IEEE 802.1x Port-Based Authentication
•
Restricted VLAN—This feature is not supported when the client connected to an 802.lx port is
authenticated with MAC authentication bypass.
•
Port security—See the
“802.1x Authentication with Port Security” section on page 12-20
.
•
Voice VLAN—See the
“802.1x Authentication with Voice VLAN Ports” section on page 12-20
.
•
VLAN Membership Policy Server (VMPS)—802.1x and VMPS are mutually exclusive.
•
Private VLAN—You can assign a client to a private VLAN.
For more configuration information, see the
“Authentication Manager” section on page 12-7
.
Network Admission Control Layer 2 802.1x Validation
The switch supports the Network Admission Control (NAC) Layer 2 802.1x validation, which checks
the antivirus condition or
posture
of endpoint systems or clients before granting the devices network
access. With NAC Layer 2 802.1x validation, you can do these tasks:
•
Download the Session-Timeout RADIUS attribute (Attribute[27]) and the Termination-Action
RADIUS attribute (Attribute[29]) from the authentication server.
•
Set the number of seconds between re-authentication attempts as the value of the Session-Timeout
RADIUS attribute (Attribute[27]) and get an access policy against the client from the RADIUS
server.
•
Set the action to be taken when the switch tries to re-authenticate the client by using the
Termination-Action RADIUS attribute (Attribute[29]). If the value is the
DEFAULT
or is not set, the
session ends. If the value is RADIUS-Request, the re-authentication process starts.
•
View the NAC posture token, which shows the posture of the client, by using the
show
authentication
or
show dot1x
privileged EXEC command.
•
Configure secondary private VLANs as guest VLANs.
Configuring NAC Layer 2 802.1x validation is similar to configuring 802.1x port-based authentication
except that you must configure a posture token on the RADIUS server. For information about
configuring NAC Layer 2 802.1x validation, see the
“Configuring NAC Layer 2 802.1x Validation”
section on page 12-49
and the
“Configuring Periodic Re-Authentication” section on page 12-37
.
For more information about NAC, see the
Network Admission Control Software Configuration Guide
.
For more configuration information, see the
“Authentication Manager” section on page 12-7
.
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
“Configuring Flexible Authentication
Ordering” section on page 12-54
.
