Chapter 76 Port Authentication
XGS2220 Series User’s Guide
523
76.4 Guest VLAN
When 802.1x or MAC Authentication is enabled on the Switch and its ports, clients that do not have the
correct credentials are blocked from using the ports. You can configure your Switch to have one VLAN
that acts as a guest VLAN. If you enable the guest VLAN (
102
in the example) on a port (
2
in the
example), the user (
A
in the example) that is not IEEE 802.1x capable or fails to enter the correct user
name and password can still access the port, but traffic from the user is forwarded to the guest VLAN.
That is, unauthenticated users can have access to limited network resources in the same guest VLAN,
such as the Internet. The access granted to the Guest VLAN depends on how the network administrator
configures switches or routers with the guest network feature.
Password
Type the password the Switch sends along with the MAC address of a client for authentication
with the RADIUS server. You can enter up to 32 printable ASCII characters except [ ? ], [ | ], [ ' ],
[ " ] or [ , ].
Timeout
Specify the amount of time before the Switch allows a client MAC address that fails
authentication to try and authenticate again. Maximum time is 3000 seconds.
When a client fails MAC authentication, its MAC address is learned by the MAC address table
with a status of denied. The timeout period you specify here is the time the MAC address entry
stays in the MAC address table until it is cleared. If you specify 0 for the timeout value, the
Switch uses the
Aging Time
configured in the
SYSTEM
>
Switch Setup
screen.
Note: If the
Aging Time
in the
SYSTEM
>
Switch Setup
screen is set to a lower value,
then it supersedes this setting.
Port
This field displays a port number. * means all ports.
*
Use this row to make the setting the same for all ports. Use this row first and then make
adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you make them.
Active
Select this check box to permit MAC authentication on this port. You must first allow MAC
authentication on the Switch before configuring it on each port.
Trusted-VLAN List
Enter the ID numbers of the trusted VLANs (separated by a comma). If a client’s VLAN ID is
specified here, the client can access the port and the connected networks without MAC
authentication.
Apply
Click
Apply
to save your changes to the Switch’s run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the
Save
link on the top navigation panel to
save your changes to the non-volatile memory when you are done configuring.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Table 304 SECURITY > Port Authentication > MAC Authentication (continued)
LABEL
DESCRIPTION
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