Contents

VLAN termination commands· 1

second-dot1q· 1

vlan-termination broadcast enable· 2

vlan-termination broadcast ra· 3

vlan-termination mode· 4

vlan-type dot1q untagged· 5

vlan-type dot1q vid· 5

vlan-type dot1q vid second-dot1q· 6

 

VLAN termination commands

second-dot1q

Use second-dot1q to enable QinQ termination on an interface, and specify the Layer 2 VLAN IDs of the VLAN-tagged packets that can be terminated by the interface.

Use undo second-dot1q to disable QinQ termination on an interface.

Syntax

second-dot1q { vlan-id-list | any } [ loose ]

undo second-dot1q { vlan-id-list | any } [ loose ]

Default

QinQ termination is disabled on an interface.

Views

VLAN interface view

Predefined user roles

network-admin

Parameters

vlan-id-list: Specifies a space-separated list of up to 10 Layer 2 VLAN ID items. Each item specifies a Layer 2 VLAN ID or a range of Layer 2 VLAN IDs in the form of vlan-id1 to vlan-id2. The value range for VLAN IDs is 1 to 4094. The value for the vlan-id2 argument must be equal to or greater than the value for the vlan-id1 argument.

any: Specifies all values between 1 and 4094.

loose: Configures the interface to receive and terminate packets that include two or more layers of VLAN tags.

Usage guidelines

When you execute this command, the Layer 1 VLAN ID of VLAN-tagged packets that can be terminated by the interface is the interface number. This Layer 1 VLAN ID is not configurable.

Examples

# Configure VLAN-interface 10 to terminate VLAN-tagged packets with Layer 2 VLAN IDs in the range of 10 to 20. Configure VLAN-interface 12 to terminate VLAN-tagged packets with Layer 2 VLAN ID 100. Configure VLAN-interface 100 to terminate VLAN-tagged packets with any Layer 2 VLAN IDs.

<Sysname> system-view

[Sysname] interface vlan-interface 10

[Sysname-Vlan-interface10] second-dot1q 10 to 20

[Sysname-Vlan-interface10] quit

[Sysname] interface vlan-interface 12

[Sysname-Vlan-interface12] second-dot1q 100

[Sysname-Vlan-interface12] quit

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] second-dot1q any

The following table describes the configuration results:

 

VLAN interface	Layer 1 VLAN ID of VLAN-tagged packets that the VLAN interface can terminate	Layer 2 VLAN IDs of VLAN-tagged packets that the VLAN interface can terminate
VLAN-interface 10	10	10–20
VLAN-interface 12	12	100
VLAN-interface 100	100	1–4094

 

vlan-termination broadcast enable

Use vlan-termination broadcast enable to enable an interface to transmit broadcasts and multicasts.

Use undo vlan-termination broadcast enable to disable an interface from transmitting broadcasts and multicasts.

Syntax

vlan-termination broadcast enable

undo vlan-termination broadcast enable

Default

Broadcast and multicast packets are dropped on an interface configured with Dot1q/QinQ termination to terminate packets of multiple VLANs.

Views

Layer 3 Ethernet subinterface view

VLAN interface view

Predefined user roles

network-admin

Usage guidelines

	IMPORTANT: This command affects system performance. If system performance is seriously affected by this command, execute the undo form of this command to remove the command configuration.

 

To transmit a broadcast or multicast packet, the interface starts a traversal over all the VLAN IDs specified for Dot1q/QinQ termination. It copies the packet and tags each copy with VLAN IDs, until all combinations of VLAN IDs are traversed.

Examples

·     Configure HundredGigE 1/0/1.10 to tag a multicast or broadcast packet with each VLAN tag in the range of 10 to 20.

# Enable Dot1q termination on HundredGigE 1/0/1.10 to terminate VLAN-tagged packets with outermost VLAN IDs in the range of 10 to 20.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1.10

[Sysname-HundredGigE1/0/1.10] vlan-type dot1q vid 10 to 20

# Enable HundredGigE 1/0/1.10 to transmit broadcast and multicast packets.

[Sysname-HundredGigE1/0/1.10] vlan-termination broadcast enable

·     Configure HundredGigE 1/0/1.10 to tag a multicast or broadcast packet with each Layer 1 VLAN ID and each Layer 2 VLAN ID. The Layer 1 and Layer 2 VLAN IDs are in the range of 300 to 400 and 500 to 600, respectively.

# Configure HundredGigE 1/0/1.10 to terminate VLAN-tagged packets whose Layer 1 and Layer 2 VLAN IDs are in the range of 300 to 400 and 500 to 600, respectively.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1.10

[Sysname-HundredGigE1/0/1.10] vlan-type dot1q vid 300 to 400 second-dot1q 500 to 600

# Enable HundredGigE 1/0/1.10 to transmit broadcast and multicast packets.

[Sysname-HundredGigE1/0/1.10] vlan-termination broadcast enable

vlan-termination broadcast ra

Use vlan-termination broadcast ra to enable an interface to transmit router advertisement (RA) multicast packets.

Use undo vlan-termination broadcast ra to disable an interface from transmitting RA multicast packets.

Syntax

vlan-termination broadcast ra

undo vlan-termination broadcast ra

Default

Broadcast and multicast packets are dropped on an interface configured with Dot1q/QinQ termination to terminate packets of multiple VLANs.

Views

Layer 3 Ethernet subinterface view

VLAN interface view

Predefined user roles

network-admin

Usage guidelines

To transmit an RA multicast packet, the interface starts a traversal over all the VLAN IDs specified for Dot1q/QinQ termination. It copies the packet and tags each copy with VLAN IDs, until all combinations of VLAN IDs are traversed.

On an IPv6 network, you must use this command to enable an ambiguous Dot1q or QinQ termination-enabled interface to transmit RA multicast packets. This command prohibits transmission of broadcast packets and other types of multicast packets, and consumes less CPU resources than the vlan-termination broadcast enable command.

Examples

·     Configure HundredGigE 1/0/1.10 to tag RA multicast packets with each VLAN tag in the range of 10 to 20.

# Enable Dot1q termination on HundredGigE 1/0/1.10 to terminate VLAN-tagged packets with outermost VLAN IDs in the range of 10 to 20.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1.10

[Sysname-HundredGigE1/0/1.10] vlan-type dot1q vid 10 to 20

# Enable HundredGigE 1/0/1.10 to transmit RA multicast packets.

[Sysname-HundredGigE1/0/1.10] vlan-termination broadcast ra

·     Configure HundredGigE 1/0/1.10 to tag RA multicast packets with each Layer 1 VLAN ID and each Layer 2 VLAN ID. The Layer 1 and Layer 2 VLAN IDs are in the range of 300 to 400 and 500 to 600, respectively.

# Configure HundredGigE 1/0/1.10 to terminate VLAN-tagged packets whose Layer 1 and Layer 2 VLAN IDs are in the range of 300 to 400 and 500 to 600, respectively.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1.10

[Sysname-HundredGigE1/0/1.10] vlan-type dot1q vid 300 to 400 second-dot1q 500 to 600

# Enable HundredGigE 1/0/1.10 to transmit RA multicast packets.

[Sysname-HundredGigE1/0/1.10] vlan-termination broadcast ra

vlan-termination mode

Use vlan-termination mode to configure the VLAN termination mode for subinterfaces.

Use undo vlan-termination mode to restore the default.

Syntax

vlan-termination mode { auto | custom }

undo vlan-termination mode

Default

By default, the VLAN termination mode for subinterfaces is automatic.

Views

System view

Predefined user roles

network-admin

Parameters

auto: Specifies automatic termination mode. In this mode, a newly created subinterface automatically terminates the packets whose outermost VLAN ID is the same as the subinterface number. In addition, you cannot configure VLAN termination on subinterfaces.

custom: Specifies customized termination mode. In this mode, you must configure VLAN termination on a newly created subinterface for it to terminate VLAN-tagged packets.

Usage guidelines

Delete all existing subinterfaces before you switch the VLAN termination mode for subinterfaces.

Examples

# Set the VLAN termination mode for subinterfaces to customized.

<Sysname> system-view

[Sysname] vlan-termination mode custom

Related commands

vlan-type dot1q default

vlan-type dot1q untagged

vlan-type dot1q vid

vlan-type dot1q vid second-dot1q

vlan-type dot1q untagged

Use vlan-type dot1q untagged to enable untagged termination on a subinterface.

Use undo vlan-type dot1q untagged to disable untagged termination on a subinterface.

Syntax

vlan-type dot1q untagged

undo vlan-type dot1q untagged

Default

Untagged termination is disabled on a subinterface.

Views

Layer 3 Ethernet subinterface view

Predefined user roles

network-admin

Usage guidelines

This command enables the subinterface to process untagged packets.

On a main interface, you can execute this command only on one subinterface.

Examples

# Enable untagged termination on HundredGigE 1/0/1.1.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1.1

[Sysname-HundredGigE1/0/1.1] vlan-type dot1q untagged

[Sysname-HundredGigE1/0/1.1] quit

vlan-type dot1q vid

Use vlan-type dot1q vid to enable Dot1q termination on a subinterface, and specify the outermost VLAN IDs in the VLAN-tagged packets that can be terminated by the subinterface.

Use undo vlan-type dot1q vid to disable Dot1q termination on a subinterface.

Syntax

vlan-type dot1q vid vlan-id-list

undo vlan-type dot1q vid vlan-id-list

Default

Dot1q termination is disabled on a subinterface.

Views

Layer 3 Ethernet subinterface view

Predefined user roles

network-admin

Parameters

vlan-id-list: Specifies a space-separated list of up to 10 outermost VLAN ID items. Each item specifies an outermost VLAN ID or a range of outermost VLAN IDs in the form of vlan-id1 to vlan-id2. The value range for VLAN IDs is 1 to 4094. The value for the vlan-id2 argument must be equal to or greater than the value for the vlan-id1 argument.

Usage guidelines

The outermost VLAN ID ranges specified by the vlan-id-list argument for different subinterfaces of a main interface cannot overlap.

Examples

# Configure HundredGigE 1/0/1.1 to terminate VLAN-tagged packets with outermost VLAN IDs in the range of 2 to 100.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1.1

[Sysname-HundredGigE1/0/1.1] vlan-type dot1q vid 2 to 100

# Configure HundredGigE 1/0/1.2 to terminate VLAN-tagged packets whose outermost VLAN ID is 3.

[Sysname] interface hundredgige 1/0/1.2

[Sysname-HundredGigE1/0/1.2] vlan-type dot1q vid 3

The following table describes the configuration results:

 

Subinterface	Outermost VLAN ID of packets that can be terminated	Whether packets to be terminated include more than one layer of VLAN tags
HundredGigE 1/0/1.2	3	No

 

vlan-type dot1q vid second-dot1q

Use vlan-type dot1q vid second-dot1q to enable QinQ termination on a subinterface, and specify the Layer 1 VLAN ID and Layer 2 VLAN ID range of VLAN-tagged packets that can be terminated by the subinterface.

Use undo vlan-type dot1q vid second-dot1q to disable QinQ termination on a subinterface.

Syntax

vlan-type dot1q vid vlan-id second-dot1q { vlan-id-list | any }

undo vlan-type dot1q vid vlan-id second-dot1q { vlan-id-list | any }

Default

QinQ termination is disabled on a subinterface.

Views

Layer 3 Ethernet subinterface view

Predefined user roles

network-admin

Parameters

vlan-id-list: Specifies a space-separated list of up to 10 VLAN ID items. Each item specifies a VLAN ID or a range of VLAN IDs in the form of vlan-id1 to vlan-id2. The value range for VLAN IDs is 1 to 4094. The value for the vlan-id2 argument must be equal to or greater than the value for the vlan-id1 argument.

any: Specifies all values between 1 and 4094.

Usage guidelines

When you enable QinQ termination on multiple subinterfaces of the same main interface, specify different Layer 2 VLAN IDs for the subinterfaces.

To modify the QinQ termination settings on a subinterface, perform the following tasks:

1.     Execute the undo vlan-type dot1q vid second-dot1q command to delete the existing QinQ termination settings.

2.     Configure QinQ termination again.

Examples

# Enable QinQ termination on the Layer 3 Ethernet subinterfaces, and configure each subinterface to terminate VLAN-tagged packets with the specified Layer 1 and Layer 2 VLAN IDs.

·     Configure HundredGigE 1/0/1.1 to terminate VLAN-tagged packets whose Layer 1 and Layer 2 VLAN IDs are both 100.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1.1

[Sysname-HundredGigE1/0/1.1] vlan-type dot1q vid 100 second-dot1q 100

[Sysname-HundredGigE1/0/1.1] quit

·     Configure HundredGigE 1/0/1.2 to terminate VLAN-tagged packets with Layer 1 VLAN ID 100 and Layer 2 VLAN IDs in the range of 200 to 300.

[Sysname] interface hundredgige 1/0/1.2

[Sysname-HundredGigE1/0/1.2] vlan-type dot1q vid 100 second-dot1q 200 to 300

[Sysname-HundredGigE1/0/1.2] quit

·     Configure HundredGigE 1/0/1.3 to terminate VLAN-tagged packets whose Layer 1 VLAN ID is 200 and Layer 2 VLAN ID is in the range of 500 to 600.

[Sysname] interface hundredgige 1/0/1.3

[Sysname-HundredGigE1/0/1.3] vlan-type dot1q vid 200 second-dot1q 500 to 600

[Sysname-HundredGigE1/0/1.3] quit

The following table describes the configuration results:

 

Layer 3 Ethernet subinterface	Layer 1 VLAN IDs of VLAN-tagged packets that the subinterface can terminate	Layer 2 VLAN IDs of VLAN-tagged packets that the subinterface can terminate
HundredGigE 1/0/1.1	100	100
HundredGigE 1/0/1.2	100	200–300
HundredGigE 1/0/1.3	200	500–600

 

# Configure HundredGigE 1/0/1.2 to terminate VLAN-tagged packets whose Layer 1 and Layer 2 VLAN IDs are both 20.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1.2

[Sysname-HundredGigE1/0/1.2] vlan-type dot1q vid 20 second-dot1q 20

[Sysname-HundredGigE1/0/1.2] quit

The following table describes the configuration results:

 

Subinterface	Layer 1 VLAN IDs of VLAN-tagged packets that the subinterface can terminate	Layer 2 VLAN IDs of VLAN-tagged packets that the subinterface can terminate	Whether the packets to be terminated include two or more layers of VLAN tags
HundredGigE 1/0/1.2	20	20	No