H3C Technologies H3C S10500 Series Switches - Manual (Page 119)

104
Task Remarks
Configuring multicast forwarding on a downstream
interface
Optional
NOTE:
•
In IGMP view, the configuration is effective on all interfaces. In interface view, the configuration is
effective on only the current interface.
• If a feature is not configured on an interface in interface view, the global configuration in IGMP view will
apply to that interface. If a feature is configured in both IGMP view and interface view, the configuration
in interface view will be given priority.
Configuring basic IGMP functions
Configuration prerequisites
Before you configure the basic functions of IGMP, complete the following tasks:
• Configure any unicast routing protocol so that all devices in the domain are interoperable at the
network layer
• Configure PIM-DM or PIM-SM
• Determine the IGMP version
• Determine the multicast group and multicast source addresses for static group member
configuration
• Determine the ACL rule for multicast group filtering
• Determine the maximum number of multicast groups that an interface can join
Enabling IGMP
To configure IGMP, you must enable IGMP on the interface on which the multicast group memberships
will be established and maintained.
Enabling IGMP for the public network
Follow these steps to enable IGMP for the public network:
To do... Use the command... Remarks
Enter system view system-view —
Enable IP multicast routing multicast routing-enable
Required
Disabled by default
Enter interface view
interface interface-type
interface-number
—
Enable IGMP igmp enable
Required
Disabled by default