VLAN mapping configuration task list
When you configure VLAN mapping, follow these guidelines:
To add VLAN tags to packets, you can configure both VLAN mapping and QinQ. VLAN mapping takes effect if a configuration conflict occurs. For more information about QinQ, see "Configuring QinQ."
To add or replace VLAN tags for packets, you can configure both VLAN mapping and a QoS policy. The QoS policy takes effect if a configuration conflict occurs. For information about QoS policies, see ACL and QoS Configuration Guide.
The following features are mutually exclusive with one another on a Layer 2 Ethernet interface or Layer 2 aggregate interface:
EVB.
VLAN mapping.
Binding an Ethernet service instance to a VSI or to an MPLS L2VPN cross-connect.
Do not configure these features simultaneously on the same interface. Otherwise, the features cannot take effect.
![[IMPORTANT: ]](images/important.png) | IMPORTANT: Use the appropriate VLAN mapping methods for the devices in the network. | |
To configure VLAN mapping:
Tasks at a glance | Remarks |
|---|---|
Configure one-to-one VLAN mapping on the wiring-closet switch, as shown in Figure 79. | |
Configure many-to-one VLAN mapping on the campus switch, as shown in Figure 79. | |
Configure one-to-two VLAN mapping on PE 1 and PE 4, as shown in Figure 80, through which traffic from customer networks enters the service provider networks. | |
Configure two-to-two VLAN mapping on PE 3, as shown in Figure 80, which is an edge device of the SP 2 network. |