THOMSON R7.4 Configuration Manual page 37

Brname: the name of the bridge instance to which the bridge port belongs. If this parameter is not
specified, the default bridge instance is selected.
=>:eth bridge xtratag list
Bridge
------------------------------------------------------
bridge
bridge
=>:eth bridge xtratag delete intf=eth_data innervid=2
=>:eth bridge xtratag list
Bridge
------------------------------------------------------
bridge
Flushing all VID translation entries
To delete the entries of the VID translation table all at once, execute following command:
=>:eth bridge xtratag list
Bridge
------------------------------------------------------
bridge
bridge
=>:eth bridge xtratag flush
=>:eth bridge xtratag list
Bridge
------------------------------------------------------
Applications
Following scenarios are based on the extra tagging feature:
Stacked VLAN tunnelling or Q-in-Q tunnelling
C-tagged frame.
VID translation: if the bridge port is untagged member of the VLAN with the inner VID, the outgoing
frame has only one VLAN tag with the outer VID. The inner VID is thus translated into the outer VID.
E-DOC-CTC-20080229-0001 v1.0
Interface Inner VID
eth_data 2
eth_data 3
Interface Inner VID
eth_data 3
Interface Inner VID
eth_data 2
eth_data 3
Interface Inner VID
is supported by unconditionally adding an extra S-tag to a
4| Ethernet Bridge and VLANs
Outer VID
transparent
4
Outer VID
4
Outer VID
transparent
4
Outer VID
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