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the tunnel through unicast routers. Then, Router B strips off the unicast IP header and continues to
forward the multicast data to the receiver.
To use this tunnel only for multicast traffic, configure static multicast routes instead of static unicast
routes at the two ends of the tunnel.
Configuration task list
Tasks at a glance
(Required.)
(Optional.)
•
(Optional.)
•
(Optional.)
•
(Optional.)
•
(Optional.)
•
(Optional.)
•
(Optional.)
NOTE:
The device can route and forward multicast data only through the primary IP addresses of
interfaces, rather than their secondary addresses or unnumbered IP addresses. For more
information about primary and secondary IP addresses, and IP unnumbered, see Layer 3—IP
Services Configuration Guide.
Enabling IP multicast routing
Enable IP multicast routing before you configure any Layer 3 multicast functionality on the public
network or VPN instance.
To enable IP multicast routing:
Step
Enter system view.
1.
Enable IP multicast routing
2.
and enter MRIB view.
Configuring multicast routing and forwarding
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-DM or PIM-SM.
Configuring static multicast routes
To configure a static multicast route for a given multicast source, you can specify an RPF interface or
an RPF neighbor for the multicast traffic from that source.
Enabling IP multicast routing
Configuring multicast routing and
Configuring static multicast routes
Specifying the longest prefix match principle
Configuring multicast load splitting
Configuring a multicast forwarding boundary
Configuring static multicast MAC address entries
Enabling multicast forwarding between sub-VLANs of a super VLAN
forwarding:
Command
system-view
multicast routing
[ vpn-instance
vpn-instance-name ]
62
Remarks
N/A
By default, IP multicast routing is
disabled.
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Troubleshooting
