3Com 4210 PWR - Page 275

MAC Address Authentication Enhanced Function Configuration 273
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CAUTION:
■ If more than one client are connected to a port, you cannot configure a Guest
VLAN for this port.
■ When a Guest VLAN is configured for a port, only one MAC address
authentication user can access the port. Even if you set the limit on the number
of MAC address authentication users to more than one, the configuration does
not take effect.
■ The undo vlan command cannot be used to remove the VLAN configured as a
Guest VLAN. If you want to remove this VLAN, you must remove the Guest
VLAN configuration for it. Refer to
“VLAN Configuration” on page 77 for a
description of the undo VLAN command.
■ Only one Guest VLAN can be configured for a port, and the VLAN configured
as the Guest VLAN must be an existing VLAN. Otherwise, the Guest VLAN
configuration does not take effect. If you want to change the Guest VLAN for a
port, you must remove the current Guest VLAN and then configure a new
Guest VLAN for this port.
■ 802.1x authentication cannot be enabled for a port configured with a Guest
VLAN.
■ The Guest VLAN function for MAC authentication does not take effect when
port security is enabled.
Configuring the
Maximum Number of
MAC Address
Authentication Users
Allowed to Access a Port
You can configure the maximum number of MAC address authentication users for
a port in order to control the maximum number of users accessing a port. After
the number of access users has exceeded the configured maximum number, the
switch will not trigger MAC address authentication for subsequent access users,
and thus these subsequent access users cannot access the network normally.
Configure the Guest VLAN for
the current port
mac-authentication
guest-vlan vlan-id
Required
By default, no Guest VLAN is
configured for a port by
default.
Return to system view quit -
Configure the interval at which
the switch re-authenticates
users in Guest VLANs
mac-authentication timer
guest-vlan-reauth interval
Optional
By default, the switch
re-authenticates the users in
Guest VLANs at the interval
of 30 seconds by default.
Table 206 Configure a Guest VLAN
Operation Command Description
Tab le 207 Configure the maximum number of MAC address authentication users allowed
to access a port
Operation Command Description
Enter system view system-view -
Enter Ethernet port view interface interface-type
interface-number
-