multicast copy by-session

Function

The multicast copy by-session command enables session-based multicast replication on a BAS interface.

The undo multicast copy by-session command restores the default configuration.

By default, session-based multicast replication is disabled on a BAS interface, and interface-based multicast replication is used.

Format

multicast copy by-session

undo multicast copy by-session

Parameters

None

Views

10GE interface view, BAS interface view, Eth-Trunk interface view, GE optical interface view, GE electrical interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mcast-base	write

Usage Guidelines

Usage Scenario

Generally, the Router replicates only one copy of multicast traffic of a multicast group to each physical interface. Then the Layer 2 device replicates the multicast traffic to each member in the multicast group. If the Layer 2 device does not provide IGMP/MLD snooping for user identification, run the multicast copy by-session command to enable session-based multicast replication on the BAS interface of the Router. After the configuration is complete, the Router directly copies multicast traffic to each user.

Prerequisites

IGMP or MLD has been enabled using the igmp enable or mld enable command for the BAS interface. Otherwise, session-based multicast replication does not take effect.

Precautions

In VS mode, this command is supported only by the admin VS.

Example

# Enable session-based multicast replication on a BAS interface.

<HUAWEI> system-view
[~HUAWEI] interface GigabitEthernet 0/1/0.1
[*HUAWEI-GigabitEthernet0/1/0.1] bas
[*HUAWEI-GigabitEthernet0/1/0.1-bas] access-type layer2-subscriber
[*HUAWEI-GigabitEthernet0/1/0.1-bas] multicast copy by-session