Ipv6 Multicast Forwarding Across Ipv6 Unicast Subnets; Configuration Task List; Enabling Ipv6 Multicast Routing - HP 5920 series Configuration Manual

searches its IPv6 unicast routing table and finds that the outgoing interface to the source (the RPF
interface) is Vlan-interface 20. This means that the (S, G) entry is correct but the packet traveled
along a wrong path. The RPF check fails and the router discards the packet.

IPv6 multicast forwarding across IPv6 unicast subnets

Routers forward the IPv6 multicast data from an IPv6 multicast source hop by hop along the forwarding
tree, but some routers might not support IPv6 multicast protocols in a network. When the IPv6 multicast
data is forwarded to a router that does not support IPv6 multicast, the forwarding path is blocked. In this
case, you can enable IPv6 multicast data forwarding across the IPv6 unicast subnets by establishing a
tunnel between the routers at both ends of the IPv6 unicast subnets.
Figure 40 IPv6 multicast data transmission through a tunnel
As shown in
Switch A encapsulates the IPv6 multicast data in unicast IPv6 packets, and forwards them to Switch B
across the tunnel through unicast routers. Then, Switch B strips off the unicast IPv6 header and continues
to forward the IPv6 multicast data down toward the receivers.

Configuration task list

Tasks at a glance
(Required.)
(Optional.)
•
(Optional.)
•
(Optional.)
•
(Optional.)
•
(Optional.)

Enabling IPv6 multicast routing

Before you configure any Layer 3 IPv6 multicast functionality, you must enable IPv6 multicast routing.
To enable IPv6 multicast routing:
Figure 40, with a tunnel established between the multicast routers Switch A and Switch B,
Enabling IPv6 multicast routing
Configuring IPv6 multicast routing and forwarding
Configuring the RPF route selection rule
Configuring IPv6 multicast load splitting
Configuring an IPv6 multicast forwarding boundary
Configuring IPv6 static multicast MAC address entries
118