Device Manager Online Help

Configuration prerequisites and notes

Before you can configure IGMP, you must prepare the router as follows:

1. Configure an IP interface.
2. Configure IGMP on a L2 interface by enabling IGMP snooping
   or
   Configure IGMP on a L3 interface by enabling multicast routing, i.e., DVMRP or PIM-SM.
• To enable IGMP snooping, refer to "Enabling IGMP snooping on a VLAN."
• To enable DVMRP or PIM-SM on an IP interface, first enable them globally.

Note: To drop IGMPv2 control packets that do not have the router alert option set, click IP Routing > IGMP and open the Interface tab. Change the RouterAlertEnable field to enable.

• Configuring IGMP parameters on a brouter port
• Configuring IGMP parameters on a VLAN
• Internet Group Management Protocol (IGMP)