qinq mapping vid map-vlan

Function

The qinq mapping vid map-vlan command configures 1 to 1 QinQ mapping on a sub-interface.

The undo qinq mapping vid map-vlan command cancels the configuration.

By default, 1 to 1 QinQ mapping is not configured on a sub-interface.

Format

qinq mapping vid vlan-id1 [ to vlan-id2 ] map-vlan vid vlan-id3

undo qinq mapping vid vlan-id1 [ to vlan-id2 ] map-vlan vid vlan-id3

Only the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S support this configuration.

Parameters

Parameter	Description	Value
vid vlan-id1 to vlan-id2	Specifies the VLAN ID of the tag carried in the received packet. vlan-id1: specifies the start inner VLAN tag. vlan-id2: specifies the end inner VLAN tag. The value of vlan-id2 must be greater than or equal to the value of vlan-id1. vlan-id1 and vlan-id2 identify a VLAN range.	vlan-id1 is an integer that ranges from 2 to 4094. vlan-id2 is an integer that ranges from 2 to 4094.
map-vlan vid vlan-id3	Specifies the VLAN ID in the mapped outer tag.	The value is an integer that ranges from 1 to 4094.

Parameter

Description

Value

vid vlan-id1 to vlan-id2

Specifies the VLAN ID of the tag carried in the received packet.

vlan-id1: specifies the start inner VLAN tag.
vlan-id2: specifies the end inner VLAN tag.
The value of vlan-id2 must be greater than or equal to the value of vlan-id1. vlan-id1 and vlan-id2 identify a VLAN range.

vlan-id1 is an integer that ranges from 2 to 4094.

vlan-id2 is an integer that ranges from 2 to 4094.

map-vlan vid vlan-id3

Specifies the VLAN ID in the mapped outer tag.

The value is an integer that ranges from 1 to 4094.

Views

GE sub-interface view, XGE sub-interface view, 25GE sub-interface view, 40GE sub-interface view, 100GE sub-interface view, VE sub-interface view, Eth-Trunk sub-interface view, MultiGE sub-interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

QinQ mapping is often deployed on edge devices of a metro Ethernet and is used to map the frames sent from the user side. The devices map the VLAN IDs in user packets to specified VLAN IDs before forwarding the packets to the public network. QinQ mapping can be applied to the following scenarios:

The VLAN IDs deployed in new sites and old sites conflict, but new sites need to communicate with old sites.
The VLAN ID planning of each site on the public network is different. As a result, the VLAN IDs conflict. However, the sites do not need to communicate.
The VLAN IDs on both ends of the public network are different.

The qinq mapping vid map-vlan command on a sub-interface has similar functions with the port vlan-mapping vlan inner-vlan command on the main interface. The differences are as follows:

QinQ mapping on a sub-interface is mainly used to access the L2VPN.
QinQ mapping used on the main interface is used for interconnection on the Layer 2 MAN so that users of different VLANs can communicate with each other.
QinQ mapping saves a large number of physical ports.

Precautions

The qinq mapping vid map-vlan command maps the single tags in frames on a sub-interface. This command takes effect only for incoming packets.

The original VLAN IDs specified for QinQ mapping on a sub-interface cannot be globally created or displayed by display commands.

VLAN mapping or VLAN stacking cannot be configured for the same VLAN on the main interface and its sub-interfaces.

The mapped VLAN IDs specified in QinQ mapping configuration must be different from the control VLAN IDs for ring protocols such as SEP, RRPP, and ERPS. Otherwise, an error message will be displayed, indicating that the configuration fails.

Example

# Configure QinQ mapping on XGigabitEthernet0/0/1.1 to map outer VLAN tag 100 to inner VLAN tag 200.

<HUAWEI> system-view
[HUAWEI] vcmp role silent
[HUAWEI] interface xgigabitethernet 0/0/1
[HUAWEI-XGigabitEthernet0/0/1] port link-type hybrid
[HUAWEI-XGigabitEthernet0/0/1] quit
[HUAWEI] interface xgigabitethernet 0/0/1.1
[HUAWEI-XGigabitEthernet0/0/1.1] qinq mapping vid 100 map-vlan vid 200