port isolate-state exclude multicast

Function

The port isolate-state exclude multicast command configures a VLAN not to isolate multicast traffic or packets.

The undo port isolate-state exclude multicast command restores the default setting.

By default, multicast traffic is isolated in a VLAN, while multicast packets are not.

Format

port isolate-state exclude multicast

undo port isolate-state exclude multicast

Parameters

None

Views

VLAN view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
forwarding	write

Usage Guidelines

Usage Scenario

In VLAN Layer 2 multicast scenarios:

If the AC-side interface sends useless multicast traffic to the device, the traffic will be forwarded to other users on the AC side, wasting bandwidth resources on the AC side and affecting user experience.
If a loop occurs on the downstream AC-side interface of the device, multicast traffic is sent back to the device. As a result, multicast traffic keeps looped.
To resolve this problem, you can run the port isolate-state exclude multicast command to use multicast isolation.

Precautions

To make multicast isolation take effect, ensure that both port isolate-state exclude multicast and port isolate-state enable vlan and multicast-vlan enable commands are used. There is no requirement for the command configuration sequence.

The command cannot be configured on the user VLAN.

Example

# Do not isolate multicast traffic or packets in multicast VLAN 10.

<HUAWEI> system-view
[~HUAWEI] igmp-snooping enable
[*HUAWEI] vlan 10
[*HUAWEI-vlan10] igmp-snooping enable
[*HUAWEI-vlan10] multicast-vlan enable
[*HUAWEI-vlan10] port isolate-state exclude multicast
[*HUAWEI-vlan10] interface GigabitEthernet0/1/0
[*HUAWEI-GigabitEthernet0/1/0] portswitch
[*HUAWEI-GigabitEthernet0/1/0] port default vlan 10
[*HUAWEI-GigabitEthernet0/1/0] port isolate-state enable vlan 10