H3C Technologies H3C SecPath F1000-E - Manual (Page 874)

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Configuring IPv6 PIM
NOTE:
The IPv6 PIM configuration is available only at the CLI.
Introduction to IPv6 PIM
Protocol Independent Multicast for IPv6 (IPv6 PIM) provides IPv6 multicast forwarding by leveraging IPv6
unicast 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, see Appendix Protocol References.
Based on the implementation mechanism, IPv6 PIM supports the following types:
• Protocol Independent Multicast–Dense Mode for IPv6 (IPv6 PIM-DM)
• Protocol Independent Multicast–Sparse Mode for IPv6 (IPv6 PIM-SM)
• Protocol Independent Multicast Source-Specific Multicast for IPv6 (IPv6 PIM-SSM)
The term "router" in this document refers to both routers and firewalls that run IP routing protocols.
To facilitate description, a network comprising IPv6 PIM–supporting routers is referred to as an "IPv6 PIM
domain" in this document.
Configuring IPv6 PIM-DM
This section describes how to configure IPv6 PIM-DM.
IPv6 PIM-DM configuration task list
Task Remarks
Enabling IPv6 PIM-DM Required
Enabling state-refresh capability Optional
Configuring state refresh parameters Optional
Configuring IPv6 PIM-DM graft retry period Optional
Configuring IPv6 PIM common features Optional