3Com 4500 PWR 26-Port Configuration Manual page 428

After a port is added to a Guest VLAN, the switch will re-authenticate the first access user of this port
(namely, the first user whose unicast M
passes the re-a uthenti cation, this port
n etwork normally.
Guest VLANs are implemented in the mode of adding a port to a VLAN. For example, when
multiple users are co
access only the contents of the Guest VLAN. The switch will re-authenticate only the first user
accessing this port, and the
client is connected to a p
After users that are con
port to the Guest VLAN. Therefore, the Guest VLAN can separate unauthenticated users on an
access port. When it comes to a trunk port or a hybrid port, if a packet itself has a VLAN tag and be
in the VLAN that the port allows to pass, the packet will be forwarded perfectly without the influence
of the Guest VLAN. That is, packets can be forwarded to the VLANs other than the Guest VLAN
through the trunk port and the hybrid port, even users fail to pass authentication.
Foll ow these steps to configure a Guest VLAN:
To do...
Enter system view
E ter Ethernet port view n
Co nfigure the Guest VLAN for
the current port
Re turn to system view
Configure the interval at which
the switch re-authenticates
users in Guest VLANs
AC address is learned
will exit the Guest VLAN,
nnected to a port, if the first user fails in the a
o ther users cannot be authen
ort, y ou cannot configure a Guest
nected to an existing port failed to pass a
Use the command...
system-view
interface interface-type
interface-number
mac-authentication
guest-vlan v lan-id
quit
mac-authentication timer
guest-vlan-reauth interval
35-5
by the switch) p eriodically. If this
and thus the user can a
uthe ntication, the other users can
ticat ed again. Thus, if more
VLAN for this port.
uthentication, the switch adds th
Remarks
—
—
Required
By default, no Guest VLAN is
configured for a port by default.
—
Optional
By default, the switch
re-authenticates the users in
Guest VLANs at the interval of
30 seconds by default.
user
ccess the
than one
e