03-Layer 2-LAN Switching Command Reference

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12-VLAN mapping commands
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12-VLAN mapping commands 40.49 KB

VLAN mapping commands

VLAN mapping and Ethernet service instance-to-VSI binding are mutually exclusive on a Layer 2 Ethernet interface or Layer 2 aggregate interface. Do not configure both features on the same interface. Otherwise, the features cannot take effect.

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.

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 an 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