l2-multicast static-group (interface view)

Function

The l2-multicast static-group command statically binds a multicast group to an AC-side interface in a VSI.

The undo l2-multicast static-group command deletes a static multicast from an AC-side interface.

By default, no multicast group is statically bound to an AC-side interface in a VSI.

Format

l2-multicast static-group [ source-address source-address ] group-address group-address1 [ to group-address2 ] vsi vsi-name

undo l2-multicast static-group [ source-address source-address ] group-address { group-address1 [ to group-address2 ] | all } vsi vsi-name

Parameters

Parameter	Description	Value
source-address source-address	Specifies the IP address of a multicast source.	The value is in dotted decimal notation.
group-address group-address1 [ to group-address2 ]	Specifies the IP address of a static multicast group.	The value ranges from 224.0.1.0 to 239.255.255.255 in dotted decimal notation.
vsi vsi-name	Specifies the name of a VSI.	The value is a string of 1 to 31 case-sensitive characters, spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.
all	Deletes all static multicast groups.	-

Views

GE interface view, 100GE interface view, XGE interface view, MultiGE interface view, 25GE interface view, 40GE interface view, Eth-Trunk interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

In addition to dynamic multicast forwarding entries generated by Layer 2 protocol protocols, you can configure static Layer 2 multicast forwarding entries by binding groups to interfaces. After a group is statically bound to an interface, users connected to this interface can keep receiving multicast data of the group over a long time.

Static Layer 2 multicast has the following advantages:

Protects the system against attacks from protocol packets.
Reduces the network delay by directly forwarding multicast packets based on static forwarding entries.
Prevents unregistered users from receiving multicast flows, improving information security and protecting service providers' interests.

Prerequisites

IGMP snooping has been enabled globally using the igmp-snooping enable (system view) command.

Precautions

The configuration takes effect only when IGMP snooping is enabled in the VSI using the igmp-snooping enable (VSI view) command.
A static multicast member port does not respond to Query messages sent from an IGMP querier. When a group or (S, G) is statically bound to or unbound from an interface, the interface does not send an IGMP Membership Report message or Leave message.
Interfaces on a VPLS network include PW-side interfaces and AC-side interfaces. This command statically binds a group to an AC-side interface. To statically bind a group to a PW-side interface, run the l2-multicast static-group (VSI view) command.
On a VPLS network, ACs can be set up on different types of interfaces. The method to statically bind a group to an AC-side interface varies according to the type of the AC-side interface:
- If the AC-side interface bound to a VSI is a physical interface that has been switched to Layer 3 mode using the undo portswitch command, run the l2-multicast static-group command on this interface.
- If the AC-side interface bound to a VSI is a VLANIF interface, bind a group to the Layer 2 interface in the corresponding VLAN. For details, see the l2-multicast static-group command in "VLAN-based IGMP Snooping Configuration Commands."

Example

# Statically bind group 225.0.0.1 to GE0/0/1. (GE0/0/1 has been bound to the VSI company1. IGMP snooping has been enabled globally and in the VSI company1.)

<HUAWEI> system-view
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] l2-multicast static-group group-address 225.0.0.1 vsi company1