4000 Router Series IP Multicast Command Reference

multicast boundary

Use multicast boundary to configure a multicast forwarding boundary.

Use undo multicast boundary to remove a multicast forwarding boundary.

Syntax

multicast boundary group-address { mask-length | mask }

undo multicast boundary { group-address { mask-length | mask } | all }

Default

No multicast forwarding boundary is configured.

Views

Interface view

Predefined user roles

network-admin

Parameters

group-address: Specifies a multicast group address in the range of 224.0.0.0 to 239.255.255.255.

mask-length: Specifies the address mask length in the range of 4 to 32.

mask: Specifies the address mask.

all: Specifies all forwarding boundaries configured on the interface.

Usage guidelines

A multicast forwarding boundary sets the boundary condition for the multicast groups in the specified

address range. If the destination address of a multicast packet matches the set boundary condition, the

packet is not forwarded.

You do not need to enable IP multicast routing before executing this command.

An interface can act as a forwarding boundary for multiple multicast groups in different address ranges.

To achieve this, use this command on the interface for each multicast address range.

Assume that Set A and Set B are multicast forwarding boundary sets with different address ranges, and

B is a subset of A. If B is configured after A, A still takes effect. If A is configured after B, B is removed.

Examples

# Configure Ethernet 1/1 as the forwarding boundary of multicast groups in the range of 239.2.0.0/16.

<Sysname> system-view

[Sysname] interface ethernet 1/1

[Sysname-Ethernet1/1] multicast boundary 239.2.0.0 16

Related commands

display multicast boundary

multicast routing

Use multicast routing to enable IP multicast routing and enter MRIB view.

Use undo multicast routing to disable IP multicast routing.