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across the tunnel through unicast routers. Then, Router B strips off the unicast IPv6 header and continues
to forward the IPv6 multicast data down toward the receivers.
Configuration task list
Task
Enabling IPv6 multicast routing
Configuring IPv6 multicast
routing and forwarding
Enabling IPv6 multicast routing
Before you configure any Layer 3 IPv6 multicast functionality, you must enable IPv6 multicast routing.
To enable IPv6 multicast routing:
Step
1.
Enter system view.
2.
Enable IPv6 multicast routing.
Configuring IPv6 multicast routing and forwarding
This section describes how to configure IPv6 multicast routing and forwarding.
Configuration prerequisites
Before you configure IPv6 multicast routing and forwarding, complete the following tasks:
Enable IPv6 forwarding and configure an IPv6 unicast routing protocol so that all devices in the
•
domain are interoperable at the network layer.
Configure IPv6 PIM-DM or IPv6 PIM-SM.
•
Determine the minimum hop limit value required for an IPv6 multicast packet to be forwarded.
•
•
Determine the maximum number of downstream nodes for a single entry in the IPv6 multicast
forwarding table.
Determine the maximum number of entries in the IPv6 multicast forwarding table.
•
Configuring an IPv6 multicast routing policy
You can configure the router to select the RPF route based on the longest prefix match principle. For more
information about RPF route selection, see
By configuring per-source or per-source-and-group load splitting, you can optimize the traffic delivery
when multiple IPv6 multicast data streams are handled.
To configure an IPv6 multicast routing policy:
Configuring an IPv6 multicast routing policy
Configuring an IPv6 multicast forwarding range
Configuring the IPv6 multicast forwarding table size
Command
system-view
multicast ipv6 routing-enable
"RPF check
377
Remarks
N/A
Disabled by default.
mechanism."
Remarks
Required.
Optional.
Optional.
Optional.
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Troubleshooting
