4000 Router Series IP Multicast Configuration Guide

• Determine the multicast group and multicast source addresses for static group member

configuration.

• Determine the ACL for multicast group filtering.

Enabling IGMP

To configure IGMP, enable IGMP on the interface where the multicast group memberships are

established and maintained.

To enable IGMP:

Ste

Command Remarks

1. Enter system view.

system-view N/A

2. Enable IP multicast routing

and enter MRIB view.

multicast routing [ vpn-instance

vpn-instance-name ]

Disabled by default.

3. Return to system view.

quit N/A

4. Enter interface view.

interface interface-type

interface-number

N/A

5. Enable IGMP.

igmp enable Disabled by default.

Specifying the IGMP version

Because the protocol packets of different IGMP versions vary in structure and type, specify the same

IGMP version for all routers on the same subnet. Otherwise, IGMP cannot operate correctly.

To specify an IGMP version:

Ste

Command Remarks

1. Enter system view.

system-view N/A

2. Enter interface view.

interface interface-type

interface-number

N/A

3. Specify an IGMP version.

igmp version version-number IGMPv2 by default.

Configuring an interface as a static member interface

You can configure an interface as a static member of a multicast group or a multicast source and group,

so that the interface can receive multicast data addressed to that multicast group for the purpose of

testing multicast data forwarding.

Configuration guidelines

• A static member interface has the following restrictions:

{ If the interface is IGMP and PIM-SM enabled, it must be a PIM-SM DR.

{ If the interface is IGMP enabled but not PIM-SM enabled, it must be an IGMP querier.

For more information about PIM-SM and DR, see "Configuring PIM."