H3C Technologies H3C S10500 Series Switches - Manual (Page 97)

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Enabling ip multicast routing
Before you configure any Layer 3 multicast functionality, you must enable IP multicast routing.
Enabling IP multicast routing for the public network
Follow these steps to enable IP multicast routing 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
Enabling IP multicast routing in a VPN instance
Follow these steps to enable IP multicast routing in a VPN instance:
To do… Use the command… Remarks
Enter system view system-view —
Create a VPN instance and enter
VPN instance view
ip vpn-instance vpn-instance-name —
Configure a route distinguisher
(RD) for the VPN instance
route-distinguisher route-distinguisher
Required
No RD is configured by default.
Enable IP multicast routing multicast routing-enable
Required
Disabled by default
NOTE:
For more information about the ip vpn-instance and route-distinguisher commands, see MPLS Command
Reference.
Configuring multicast routing and forwarding
Configuration prerequisites
Before you configure multicast routing and forwarding, complete the following tasks:
• Configure a unicast routing protocol so that all devices in the domain are interoperable at the
network layer
• Enable PIM (PIM-DM or PIM-SM)
• Determine the maximum number of downstream nodes for a single multicast forwarding table entry
• Determine the maximum number of entries in the multicast forwarding table
Configuring multicast static routes
By configuring a multicast static route for a given multicast source, you can specify an RPF interface or an
RPF neighbor for multicast traffic from that source. If you want to remove a specific multicast static route,
use the undo ip rpf-route-static command, if you want to remove all multicast static routes, use the delete
ip rpf-route-static command.