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Configuring two-to-two VLAN mapping
Configure two-to-two VLAN mapping on the customer-side port of an edge device that connects two
SP networks, for example, on PE 3 in Figure 75. T
wo-to-two VLAN mapping enables two sites in
different VLANs to communicate at Layer 2 across two service provider networks that use different
VLAN assignment schemes.
Before you configure two-to-two VLAN mapping, create the original VLANs and the translated
VLANs.
To configure two-to-two VLAN mapping:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
• Enter Layer 2 Ethernet interface
view:
interface interface-type
interface-number
• Enter Layer 2 aggregate
interface view:
interface bridge-aggregation
interface-number
N/A
3. Set the link type of the port.
• Set the port link type to trunk:
port link-type trunk
• Set the port link type to hybrid:
port link-type hybrid
By default, the link type of a
port is
access
.
4. Assign the port to the original
VLANs and the translated
VLANs.
• For the trunk port:
port trunk permit vlan
vlan-id-list
• For the hybrid port:
port hybrid vlan vlan-id-list
tagged
N/A
5. Configure a two-to-two VLAN
mapping.
vlan mapping tunnel
outer-vlan-id
inner-vlan-id
translated-vlan
outer-vlan-id inner-vlan-id
By default, no VLAN mapping
is configured on an interface.
Displaying and maintaining VLAN mapping
Execute display commands in any view.
Task Command
Display VLAN mapping information.
display vlan mapping
[
interface
interface-type interface-number ]
VLAN mapping configuration examples
One-to-one and many-to-one VLAN mapping configuration
example
Network requirements
As shown in Figure 81:
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