igmp-snooping enable vlan

Function

The igmp-snooping enable vlan command enables IGMP snooping on a specified VLAN.

The undo igmp-snooping enable vlan command disables IGMP snooping on a specified VLAN.

By default, IGMP snooping is disabled on a VLAN.

Format

igmp-snooping enable vlan { vid1 [ to vid2 ] } &<1-10>

undo igmp-snooping enable vlan { all | { vid1 [ to vid2 ] } &<1-10> }

Parameters

Parameter	Description	Value
vid1	Specifies the start VLAN ID.	The value is an integer ranging from 1 to 4094.
to vid2	Specifies the ending VLAN ID.	The value is an integer ranging from 1 to 4094.
all	Enables IGMP snooping on all VLANs.	-

Parameter

Description

Value

vid1

Specifies the start VLAN ID.

The value is an integer ranging from 1 to 4094.

to vid2

Specifies the ending VLAN ID.

The value is an integer ranging from 1 to 4094.

all

Enables IGMP snooping on all VLANs.

Views

System view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2mc	write

Usage Guidelines

Usage Scenario

IGMP snooping is used on a Layer 2 device running between a Layer 3 device and hosts, allowing the Layer 2 device to listen to the multicast protocol packets exchanged between the Layer 3 device and hosts. By listening to the multicast protocol packets, the Layer 2 device maintains a multicast forwarding table to manage and control multicast packet forwarding. You need to enable IGMP snooping before implementing Layer 2 multicast.

Configuration Impact

If the igmp-snooping enable vlan command is run more than once, all configurations take effect.

Precautions

The igmp-snooping enable vlan command may fail to be configured when the Dot1q sub-interface has been bound to the VLAN.

Example

# Enable IGMP snooping on multiple VLANs in the system view.

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