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To do... Use the command... Remarks
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 information about the ip vpn-instance and route-distinguisher commands, see the
MPLS Comman
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
You can configure a multicast static route for a given multicast source to specify an RPF interface or an
RPF neighbor for multicast traffic from that source.
Follow these steps to configure a multicast static route:
To do... Use the command... Remarks
Enter system view
system-view —
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