Configure the N: 1 VLAN Mapping Function

For a port, multiple N:1 VLAN mapping entries can be configured. Each N:1 VLAN mapping entry can be the multiple-to-one relationship, that is, one or more private VLANs can be mapped to a public VLAN.

After the port is configured with N: 1 VLAN mapping, if the VLAN ID of the outermost VLAN tag of the packet matches the entry of N: 1 VLAN mapping, replace the VLAN ID of the outermost VLAN tag of the packet with the specified VLAN ID; if not, the N: 1 VLAN mapping will not process the packet.

Configuration Condition

Before configuring the N:1 VLAN mapping function, ensure that:

• The port link type is configured to the Trunk type or the Hybrid type.
• Configure the port to add the VLAN of the replaced outer VLAN tag to ensure that the packet after replacing the outer VLAN tag can pass.

Configure N: 1 VLAN Mapping Function

Table 4-5 Configure N:1 VLAN mapping function

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  On one port, the N:1 VLAN mapping function cannot coexist with the following functions: QinQ Evc, basic Qin Q, port-based flexible QINQ, 1:1 VLAN mapping, configure the protocol type of the outer VLAN tags of the port as a non-default value.
• When the port link type is trunk, the PVID cannot be the public VLAN mapped by N: 1 VLAN.
• When the port link type is hybrid, the public VLAN mapped by N:1 VLAN cannot be added in untag mode.

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