Extra Tagging (Stacked Vlans) - THOMSON R7.4 Configuration Manual

4| Ethernet Bridge and VLANs
4.8

Extra Tagging (Stacked VLANs)

Introduction
The CLI commands explained in this section belong to the command group
What is VLAN stacking?
VLAN stacking means that a frame contains two VLAN tags:
An inner VID, also referred to as the local VID.
An outer VID, also referred to as the WAN-side VID.
General configuration of the bridge
Before using the unknown VID policy feature, make following preparations:
VLAN awareness of the
Hence, the bridge must be VLAN aware.
By default, the bridge is non-VLAN aware. To make the bridge VLAN aware, execute following command:
=>:eth bridge config vlan=enabled
For more information on VLAN awareness, see
Extra tagging mode
Each bridge port can be configured with an
By default, the extra tagging mode is set to none. To change the mode, execute the command
:eth bridge ifconfig
28
bridge: the bridge must be able to interpret the VLAN tags of received frames.
extra tagging
and specify the value of the parameter
:eth bridge xtratag
"4.3 VLAN Awareness" on page 16
mode.
xtratagging
.
.
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