l2-multicast instance

Function

The l2-multicast instance command creates a Layer 2 multicast instance.

The undo l2-multicast instance command deletes a Layer 2 multicast instance.

By default, no Layer 2 multicast instance exists.

Format

l2-multicast instance instance-id

undo l2-multicast instance instance-id

Parameters

Parameter	Description	Value
instance-id	Sets an ID for a Layer 2 multicast instance.	The value is an integer ranging from 1 to 32.

Parameter

Description

Value

instance-id

Sets an ID for a Layer 2 multicast instance.

The value is an integer ranging from 1 to 32.

Views

System view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2mc	write

Usage Guidelines

Usage Scenario

A Layer 2 multicast instance is used to associate a multicast instance with one or more user instances. The multicast and user instances can be VLANs or VSIs. After one or more Layer 2 multicast instances are configured on a Layer 2 device, the device requests for only one copy of a multicast group's data for all users in different VLANs or VSIs that are interested in the data, not a copy for each VLAN or VSI, from the upstream device. Such implementation helps reduce bandwidth consumption. To configure a Layer 2 multicast instance, run the l2-multicast instance command.

Prerequisites

IGMP snooping has been enabled using the igmp-snooping enable command in the system view.

Example

# Create a Layer 2 multicast instance.

<HUAWEI> system-view
[~HUAWEI] igmp-snooping enable
[*HUAWEI] l2-multicast instance 1
[*HUAWEI-l2-minst1]