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Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
Chapter 29 Configuring 802.1Q Tunneling, VLAN Mapping, and Layer 2 Protocol Tunneling
Configuring VLAN Mapping
Mapping Customer VLANs to Service-Provider VLANs
Figure 29-5 shows a topology where a customer uses the same VLANs in multiple sites on different sides
of a service-provider network. You map the customer VLAN IDs to service-provider VLAN IDs for
packet travel across the service-provider backbone. The customer VLAN IDs are retrieved at the other
side of the service-provider backbone for use in the other customer site. Configure the same set of VLAN
mappings at a customer-connected port on each side of the service-provider network.
The examples following the configuration steps illustrate how to use one-to-one mapping, traditional
QinQ, or selective QinQ to map customer VLANs 1 to 5 to service-provider VLANs.
Figure 29-5 Mapping Customer VLANs
Configuring VLAN Mapping
• Default VLAN Mapping Configuration, page 29-9
• VLAN Mapping Configuration Guidelines, page 29-10
• Configuring VLAN Mapping, page 29-11
Default VLAN Mapping Configuration
By default, no VLAN mapping is configured.
Service provider
Customer A
VLANs 1-5
Host
Host
Customer A
VLANs 1-5
Customer A
VLANs 1-5
Customer
switches
Customer
switch
Trunk port Trunk port
VLAN mapping at
customer-connecting ports
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Switch A Switch B
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