Configuration Examples
441
M4100 Series Managed Switch
1. Authenticator: A port that enforces authentication before allowing access to services
available through that port.
2. Supplicant:
A port that attempts to access services offered by the authenticator.
Additionally, there exists a third role:
3. Authentication server: Performs the authentication function necessary to check the
credentials of the supplicant on behalf of the authenticator
.
All three roles are required in order to complete an authentication exchange.
The managed switches support the authenticator role only, in which the PAE is responsible
for communicating with the supplicant.
The authenticator PAE is also responsible for
submitting the information received from the supplicant to the authentication server in order
for the credentials to be checked, which determine the authorization state of the port. The
Authenticator PAE controls the authorized/unauthorized state of the controlled port
depending on the outcome of the RADIUS-based authentication process.
Supplicant
Supplicant
Authenticator
Switch
Authentication
server (RADIUS)
192.168.10.23
Figure 1. 802.1X authenticator and supplicant roles
802.1X Sample Configuration
This example shows how to configure the switch so that 802.1X-based authentication is
required on the ports in a corporate conference room (1/0/5–1/0/8). These ports are available
to visitors and must be authenticated before granting access to the network. The
authentication is handled by an external RADIUS server. When the visitor is successfully
authenticated, traffic is automatically assigned to the guest VLAN. This example assumes
that a VLAN was configured with a VLAN ID of 150 and VLAN name of Guest.
1. From the Port
Authentication screen, select ports 1/0/5, 1/0/6, 1/0/7 and 1/0/8.
2. From the Port Control menu, select Unauthorized.
The Port Control setting for all other ports where authentication is not needed should
Authorized. When the Port Control setting is
Authorized, the port is unconditionally put in
a force-authorized state and does not require any authentication. When the Port Control
setting is Auto, the authenticator PAE sets the controlled port mode
3. In the Guest VLAN field for ports 1/0/5–
1/0/8, enter 150 to assign these ports to the guest
VLAN.
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