multicast-vlan user-vlan

Function

The multicast-vlan user-vlan command associates a multicast VLAN with user VLANs.

The undo multicast-vlan user-vlan command cancels the configuration.

By default, a multicast VLAN is not associated with user VLANs.

Format

multicast-vlan user-vlan { { vlan-id1 [ to vlan-id2 ] } &<1-10> }

undo multicast-vlan user-vlan { all | { vlan-id1 [ to vlan-id2 ] } &<1-10> }

Parameters

Parameter	Description	Value
vlan-id1	Specifies the ID of the first user VLAN.	The value is an integer ranging from 1 to 4094.
to vlan-id2	Specifies the ID of the last user VLAN. The vlan-id2 value must be greater than the vlan-id1 value. vlan-id2 and vlan-id1 define a range together. If vlan-id2 is not specified, only the VLAN specified by vlan-id1 serves as the user VLAN.	The value is an integer ranging from 1 to 4094. The vlan-id2 value must be greater than the vlan-id1 value.
all	Indicates all user VLANs.	-

Parameter

Description

Value

vlan-id1

Specifies the ID of the first user VLAN.

The value is an integer ranging from 1 to 4094.

to vlan-id2

Specifies the ID of the last user VLAN.

The vlan-id2 value must be greater than the vlan-id1 value. vlan-id2 and vlan-id1 define a range together. If vlan-id2 is not specified, only the VLAN specified by vlan-id1 serves as the user VLAN.

The value is an integer ranging from 1 to 4094. The vlan-id2 value must be greater than the vlan-id1 value.

all

Indicates all user VLANs.

Views

VLAN view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2mc	write

Usage Guidelines

Usage Scenario

After a multicast VLAN is configured, the multicast-vlan user-vlan command can be used to configure a mapping between the multicast VLAN and user VLANs. Then, a Layer 3 device sends only one copy of multicast data to the multicast VLAN, and does not need to replicate multicast data for each VLAN. This reduces the network resource consumption and reduces the burden of the Layer 3 device.

Prerequisites

The multicast-vlan enable command has been run to configure a multicast VLAN.

Configuration Impact

After a VLAN is configured as a user VLAN, the VLAN cannot be configured as a multicast VLAN.

After users VLANs are bound to a multicast VLAN, unbind the user VLANs from the multicast VLAN before deleting the user VLANs or the multicast VLAN.

If the multicast-vlan user-vlan command is run more than once, all configurations take effect.

Precautions

The multicast VLAN ID is mutually exclusive with other access VLAN IDs on the same physical interface.

The following conditions must be met to configure user VLANs for a multicast VLAN:

A user VLAN is bound to only one multicast VLAN.
The multicast VLAN has one or more user VLANs.

Example

# Set a mapping relationship between multicast VLAN 11 and user VLANs 2 to 10.

<HUAWEI> system-view
[~HUAWEI] igmp-snooping enable
[*HUAWEI] vlan batch 2 to 10
[*HUAWEI] vlan 11
[*HUAWEI-vlan11] igmp-snooping enable
[*HUAWEI-vlan11] multicast-vlan enable
[*HUAWEI-vlan11] multicast-vlan user-vlan 2 to 10

# Set a mapping relationship between multicast VLAN 10 and user VLAN 20.

<HUAWEI> system-view
[~HUAWEI] igmp-snooping enable
[*HUAWEI] vlan 20
[*HUAWEI-vlan20] quit
[*HUAWEI] vlan 10
[*HUAWEI-vlan10] igmp-snooping enable
[*HUAWEI-vlan10] multicast-vlan enable
[*HUAWEI-vlan10] multicast-vlan user-vlan 20