Contents

VLAN mapping commands· 1

display vlan mapping· 1

vlan mapping· 2

 

VLAN mapping commands

display vlan mapping

Use display vlan mapping to display VLAN mapping information.

Syntax

display vlan mapping [ interface interface-type interface-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface interface-type interface-number: Specifies an interface by its type and number. If you do not specify an interface, the command displays VLAN mapping information on all interfaces.

Examples

# Display VLAN mapping information on all interfaces.

<Sysname> display vlan mapping

 

Interface GigabitEthernet1/0/1:

  Outer VLAN    Inner VLAN    Translated Outer VLAN    Translated Inner VLAN

  10            N/A           120                      N/A

 

 

Interface GigabitEthernet1/0/3:

  Outer VLAN    Inner VLAN    Translated Outer VLAN    Translated Inner VLAN

  12            N/A           110                      12

 

Table 1 Command output

Field	Description
Outer VLAN	Original outer VLAN. This field indicates the original VLAN for one-to-one VLAN mapping and one-to-two VLAN mapping.
Inner VLAN	Original inner VLAN. This field displays N/A for one-to-one VLAN mapping and one-to-two VLAN mapping.
Translated Outer VLAN	Translated outer VLAN. This field indicates the translated VLAN for one-to-one VLAN mapping. This field indicates the SVLAN to be added for one-to-two VLAN mapping.
Translated Inner VLAN	Translated inner VLAN. This field displays N/A for one-to-one VLAN mapping.

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Related commands

vlan mapping

vlan mapping

Use vlan mapping to configure VLAN mapping on an interface.

Use undo vlan mapping to cancel the VLAN mapping configuration.

Syntax

vlan mapping { vlan-id translated-vlan vlan-id | nest { range vlan-range-list | single vlan-id-list } nested-vlan vlan-id }

undo vlan mapping { vlan-id translated-vlan vlan-id | all | nest { range vlan-range-list | single vlan-id-list } nested-vlan vlan-id }

Default

No VLAN mapping is configured on an interface.

Views

Layer 2 Ethernet interface view

Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

vlan-id translated-vlan vlan-id: Specifies the original VLAN and translated VLAN for a one-to-one VLAN mapping. The value range for the vlan-id argument is 1 to 4094. The original VLAN and the translated VLAN cannot be the same.

nest range vlan-range-list nested-vlan vlan-id: Specifies the CVLAN ranges and the SVLAN for a one-to-two VLAN mapping. The vlan-range-list argument specifies a space-separated list of up to 10 CVLAN items. Each item specifies a CVLAN ID or a range of CVLAN IDs in the format of vlan-id1 to vlan-id2. The value range for CVLAN IDs is 1 to 4094. The value for the vlan-id2 argument must be greater than the value for the vlan-id1 argument. Different CVLAN ranges cannot overlap. The vlan-id argument specifies the SVLAN ID in the range of 1 to 4094.

nest single vlan-id-list nested-vlan vlan-id: Specifies the CVLANs and the SVLAN for a one-to-two VLAN mapping. The vlan-id-list argument specifies a space-separated list of up to 10 CVLAN IDs, each of which is in the range of 1 to 4094. The vlan-id argument specifies the SVLAN ID in the range of 1 to 4094.

all: Deletes all VLAN mapping configurations from the interface.

Usage guidelines

VLAN mapping takes effect only on VLAN-tagged packets received on an interface.

The original and translated VLANs in VLAN mappings on the same interface must meet the following requirements:

·     Different types of VLAN mapping entries cannot include the same original VLANs or translated VLANs.

·     Different one-to-one VLAN mapping entries cannot include the same translated VLANs. If you configure multiple one-to-one VLAN mapping entries for the same original VLANs, the most recent configuration takes effect.

Before you enable or disable QinQ on a port, you must remove all VLAN mappings on the port.

If you use both transparent VLANs and VLAN mappings on an interface, the transparent VLANs cannot be the following VLANs:

·     Original or translated VLANs of one-to-one and one-to-two VLAN mappings.

The MTU of an interface is 1500 bytes by default. After a VLAN tag is added to a packet, the packet length is added by 4 bytes. As a best practice, set the MTU to a minimum of 1504 bytes for ports on the forwarding path of the packet on the service provider network.

Examples

# Configure a one-to-one VLAN mapping on GigabitEthernet 1/0/1 to map VLAN 1 to VLAN 101.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] vlan mapping 1 translated-vlan 101

# Configure one-to-two VLAN mappings on GigabitEthernet 1/0/4 to add SVLAN tag 101 to packets carrying VLAN tags 1 through 10 and VLAN tag 80.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/4

[Sysname-GigabitEthernet1/0/4] vlan mapping nest range 1 to 10 nested-vlan 101

[Sysname-GigabitEthernet1/0/4] vlan mapping nest single 80 nested-vlan 101

Related commands

display vlan mapping