Lucent Technologies P550 - Manual (Page 63)

Configuring the Cajun P550 Switch (Layer 2 & Layer 3)
Cajun P550/P220 Switch Operation Guide 3 -17
3. From the Frame Tags pull-down menu, select whether you want to Ignore or
Use received Frame VLAN tags. If you ignore VLAN tags on incoming frames, the
frames are bound to the port’s default VLAN.
4. From the VLAN Binding pull-down menu, select a VLAN binding type for this
port.
Table 3-9 describes the VLAN Binding Options.
5. From the Automatic VLAN Creation pull-down menu, select Enable to
automatically create a VLAN each time the port receives a frame from an unknown
VLAN.
Note: This feature does not create entries in 3Com Mapping Tables. Refer to
“Creating 3Com Mapping Tables”, in Chapter 12, for more information on
3Com Mapping Tables.
6. Click APPLY to save your changes, or CANCEL to restore previous settings.
Table 3-9. VLAN Binding Options
Option Definition
Static Assigns VLAN membership manually, using the VLAN Switch
Ports page described in “Creating and Implementing VLANs”, in
Chapter 12.
Bind to All Binds this port to all VLANs known to the switch. This is an
appropriate mode for switch-to-switch connections.
If you use 3Com Mapping Tables, this setting is ignored.
Note: When a tagged IEEE 802.1Q packet arrives on a
port that is set to bind to all and the VLAN does
not exist on the switch, the packet is forwarded
on to the VLAN assigned to the port default
VLAN for that port. To prevent unintended
forwarding of unknown VLAN traffic to the
port’s default VLAN, configure the port default
VLAN to Discard. The automatic VLAN creation
feature will not work if the port’s default VLAN
is the discard VLAN, because the switch does not
learn for this VLAN.
Bind to Received Binds this port to any VLAN it receives traffic from.
Note: If Automatic VLAN Creation is enabled, the port
binds to previously unknown VLANs, and a
VLAN entry is added to the switch VLAN table. If
Automatic VLAN Creation is disabled, the port
does not bind to any VLAN unknown to the
switch.