igmp-snooping proxy-uplink-port vlan

Function

The igmp-snooping proxy-uplink-port vlan command configures an interface as an IGMP snooping proxy uplink interface. No IGMP Query message can be sent to this interface.

The undo igmp-snooping proxy-uplink-port vlan command deletes the IGMP snooping proxy uplink interface configuration.

By default, no IGMP snooping proxy uplink interface exists in a VLAN.

Format

igmp-snooping proxy-uplink-port vlan vlanid

undo igmp-snooping proxy-uplink-port vlan vlanid

Parameters

Parameter	Description	Value
vlanid	Indicates a VLAN.	The value is an integer ranging from 1 to 4094.

Parameter

Description

Value

vlanid

Indicates a VLAN.

The value is an integer ranging from 1 to 4094.

Views

Layer 2 100GE interface view, Layer 2 10GE interface view, 25GE-L2 view, 400GE-L2 view, Layer 2 40GE interface view, Layer 2 50GE interface view, Eth-Trunk interface view, Layer 2 GE interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2mc	write

Usage Guidelines

Usage Scenario

After the IGMP snooping proxy or querier function is enabled on a Layer 2 device, the Layer 2 device broadcasts IGMP Query messages to all interfaces (including router interfaces) in a VLAN periodically, which may trigger IGMP querier reelection. To prevent IGMP querier reelection, run the igmp-snooping proxy-uplink-port command on the router interface to disable the Layer 2 device from sending IGMP Query messages to the router interface in a VLAN.

Prerequisites

IGMP snooping proxy has been enabled using the igmp-snooping proxy command in the VLAN view, or IGMP snooping querier has been enabled using the igmp-snooping querier enable command in the VLAN view.

Precautions

Only one IGMP snooping proxy unlink interface can be configured in a VLAN.

The igmp-snooping proxy-uplink-port command is only used on an uplink interface; therefore, the specified VLAN cannot be a user VLAN of a multicast VLAN.

Example

# Configure a GE 0/1/1 in VLAN 10 as an IGMP snooping proxy uplink interface.

<HUAWEI> system-view
[~HUAWEI] igmp-snooping enable
[*HUAWEI] interface GigabitEthernet0/1/1
[*HUAWEI-GigabitEthernet0/1/1] igmp-snooping proxy-uplink-port vlan 10