Table of Contents
Advertisement
Figure 30 Multicast data transmission through a tunnel
Multicast device
Source
Device A
As shown in
Device A encapsulates the multicast data in unicast IP packets, and forwards them to Device B
across the tunnel through unicast routers. Then, Device 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 the tunnel as the outgoing interface only for
multicast routes.
Configuration task list
Tasks at a glance
(Required.)
(Optional.)
Configuring multicast routing and
•
(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
1.
Enter system view.
2.
Enable IP multicast routing
and enter MRIB view.
Unicast device Unicast device
Unicast device
Figure
30, a tunnel is established between the multicast routers Device A and Device B.
Enabling IP multicast routing
Configuring static multicast routes
Specifying the longest prefix match principle
Configuring multicast load splitting
Configuring a multicast forwarding boundary
Enabling multicast forwarding between sub-VLANs of a super VLAN
Tunnel
Unicast device
forwarding:
Command
system-view
multicast
routing [ vpn-instance vpn-insta
79
Multicast device
Device B
Receiver
Remarks
N/A
By default, IP multicast routing is
disabled.
Advertisement
Table of Contents
Troubleshooting
