13 ipv6 pim configuration, Ipv6 pim overview, Ipv6 pim configuration – H3C Technologies H3C S7500E Series Switches User Manual
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IPv6 PIM Configuration
When configuring IPv6 PIM, go to these sections for information you are interested in:
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Configuring IPv6 PIM Common Features
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Displaying and Maintaining IPv6 PIM
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IPv6 PIM Configuration Examples
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Troubleshooting IPv6 PIM Configuration
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The term “router” in this document refers to a router in a generic sense or a Layer 3 switch
running IPv6 PIM.
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EA cards (such as LSQ1GP12EA and LSQ1TGX1EA) do not support IPv6 features.
IPv6 PIM Overview
Protocol Independent Multicast for IPv6 (IPv6 PIM) provides IPv6 multicast forwarding by
leveraging static routes or IPv6 unicast routing tables generated by any IPv6 unicast routing
protocol, such as RIPng, OSPFv3, IS-ISv6, or BGP4+. IPv6 PIM uses an IPv6 unicast routing
table to perform reverse path forwarding (RPF) check to implement IPv6 multicast forwarding.
Independent of the IPv6 unicast routing protocols running on the device, IPv6 multicast routing
can be implemented as long as the corresponding IPv6 multicast routing entries are created
through IPv6 unicast routes. IPv6 PIM uses the reverse path forwarding (RPF) mechanism to
implement IPv6 multicast forwarding. When an IPv6 multicast packet arrives on an interface of
the device, RPF check is performed on it. If the RPF check succeeds, the device creates the
corresponding routing entry and forwards the packet; if the RPF check fails, the device discards
the packet. For more information about RPF, refer to IPv6 Multicast Routing and Forwarding
Configuration in the IP Multicast Configuration Guide.
Based on the implementation mechanism, IPv6 PIM falls into two modes:
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Protocol Independent Multicast–Dense Mode for IPv6 (IPv6 PIM-DM), and
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Protocol Independent Multicast–Sparse Mode for IPv6 (IPv6 PIM-SM).