mld-snooping enable

Function

The mld-snooping enable command enables MLD snooping.

The undo mld-snooping enable command disables MLD snooping.

By default, MLD snooping is disabled.

Format

mld-snooping enable

mld-snooping enable vlan { vlan-id1 [ to vlan-id2 ] } &<1-10>

undo mld-snooping enable

undo mld-snooping enable vlan { all | { vlan-id1 [ to vlan-id2 ] } &<1-10> }

Parameters

Parameter	Description	Value
vlan	Enables MLD snooping in VLANs.	-
vlan-id1	Specifies the start VLAN ID.	The value is an integer ranging from 1 to 4094.
to vlan-id2	Specifies the end VLAN ID.	The value is an integer ranging from 1 to 4094. vlan-id2 must be greater than vlan-id1.
all	Disables MLD snooping for all VLANs.	-

Views

System view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2mc	write

Usage Guidelines

Usage Scenario

MLD snooping runs on a Layer 2 device that is deployed between a Layer 3 device and user hosts. The Layer 2 device can then maintain multicast forwarding entries by listening to multicast protocol messages transmitted between the upstream device and hosts, controlling multicast data packet forwarding. Enabling MLD snooping is the prerequisite for implementing Layer 2 multicast.

Precautions

The mld-snooping enable vlan command fails to be run in a VLAN view in any of the following conditions:

A dot1q termination sub-interface is added to the VLAN.
The MLD snooping configuration for a VLAN conflicts with the mld on-demand command configuration for a VLANIF interface.

Example

# Enable MLD snooping for multiple VLANs.

<HUAWEI> system-view
[~HUAWEI] mld-snooping enable
[*HUAWEI] vlan batch 2 to 10
[*HUAWEI] mld-snooping enable vlan 2 to 10