Multicast Forwarding Across Unicast Subnets; Multicast Routing And Forwarding Configuration Task List - HP MSR2003 Configuration Manual

C and Router D and specify Router B and Router C as the RPF neighbors of Router C and Router D,
respectively. In this way, the receiver hosts can receive the multicast data from the multicast source.
NOTE:
A static multicast route is effective only on the multicast router on which it is configured, and will not be
advertised throughout the network or redistributed to other routers.

Multicast forwarding across unicast subnets

Routers forward the multicast data from a multicast source hop by hop along the forwarding tree, but
some routers might not support multicast protocols in a network. When the multicast data is forwarded
to a router that does not support IP multicast, the forwarding path is blocked. In this case, you can enable
multicast forwarding across two unicast subnets by establishing a tunnel between the routers at the edges
of the two unicast subnets.
Figure 18 Multicast data transmission through a tunnel
As shown in
A encapsulates the multicast data in unicast IP packets, and forwards them to Router B across 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 the tunnel as the outgoing interface only for multicast
routes.
Multicast routing and forwarding configuration task
list
Tasks at a glance
(Required.)
(Optional.)
•
(Optional.)
•
(Optional.)
•
(Optional.)
•
(Optional.)
Figure 18, a tunnel is established between the multicast routers Router A and Router B. Router
Enabling IP multicast routing
Configuring multicast routing and
Configuring static multicast routes
Configuring the RPF route selection rule
Configuring multicast load splitting
Configuring a multicast forwarding boundary
forwarding:
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