mld-snooping learning vlan

Function

The mld-snooping learning command disables an interface in VLANs to dynamically learn forwarding entries.

The undo mld-snooping learning command disables the function.

By default, interfaces in VLANs are enabled to dynamically learn forwarding entries.

Format

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

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

Parameters

Parameter	Description	Value
vlan-id1	Specifies the start VLAN ID.	The value is an integer that ranges from 1 to 4094.
to vlan-id2	Specifies the last VLAN ID. If to vlan-id2 is not specified, the interface is added only to the multicast group in the VLAN specified by vlan-id1.	The value is an integer that ranges from 1 to 4094. vlan-id2 must be greater than vlan-id1. vlan-id1 and vlan-id2 specify a range of VLANs.
all	Disables an interface in all VLANs to learn forwarding entries.	-

Parameter

Description

Value

vlan-id1

Specifies the start VLAN ID.

The value is an integer that ranges from 1 to 4094.

to vlan-id2

Specifies the last VLAN ID. If to vlan-id2 is not specified, the interface is added only to the multicast group in the VLAN specified by vlan-id1.

The value is an integer that ranges from 1 to 4094.

vlan-id2 must be greater than vlan-id1. vlan-id1 and vlan-id2 specify a range of VLANs.

all

Disables an interface in all VLANs to learn forwarding entries.

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

To enable an interface to dynamically learn forwarding entries in MLD Report messages received, run the mld-snooping learning command. After this command is run for an interface, the interface can be added to a multicast group manually. However, after the undo mld-snooping learning command is run for an interface, the interface cannot dynamically learn forwarding entries, but can still be added to a multicast group manually.

If the undo mld-snooping learning command is run more than once, all configurations take effect.

Example

# Disable GE 0/1/1 in VLAN 3 and VLAN 4 from dynamically learning forwarding entries.

<HUAWEI> system-view
[~HUAWEI] mld-snooping enable
[*HUAWEI] vlan 3
[*HUAWEI-vlan3] mld-snooping enable
[*HUAWEI-vlan3] quit
[*HUAWEI] vlan 4
[*HUAWEI-vlan4] mld-snooping enable
[*HUAWEI-vlan4] quit
[*HUAWEI] interface GigabitEthernet 0/1/1
[*HUAWEI-GigabitEthernet0/1/1] portswitch
[*HUAWEI-GigabitEthernet0/1/1] port link-type trunk
[*HUAWEI-GigabitEthernet0/1/1] port trunk allow-pass vlan 3 to 4
[*HUAWEI-GigabitEthernet0/1/1] mld-snooping learning vlan 3 to 4