Configuring Ipv6 Pim (Available Only On The S5500-Ei); Overview; Ipv6 Pim-Dm Overview - H3C S5500-EI Configuration Manual

Configuring IPv6 PIM (available only on the
S5500-EI)

Overview

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
routing and forwarding (available only on the
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)
•
• Bidirectional Protocol Independent Multicast for IPv6 (IPv6 BIDIR-PIM)
Protocol Independent Multicast Source-Specific Multicast for IPv6 (IPv6 PIM-SSM)
•
To facilitate description, a network comprising IPv6 PIM–supporting routers is referred to as an "IPv6 PIM
domain" in this document.
The term "router" in this document refers to both routers and Layer 3 switches.
The term "interface" in this chapter collectively refers to Layer 3 interfaces, including VLAN interfaces
and Layer 3 Ethernet interfaces. You can set an Ethernet port as a Layer 3 interface by using the port
link-mode route command (see Layer 2—LAN Switching Configuration Guide).

IPv6 PIM-DM overview

IPv6 PIM-DM is a type of dense mode IPv6 multicast protocol. It uses the push mode for IPv6 multicast
forwarding, and is suitable for small-sized networks with densely distributed IPv6 multicast members.
The basic implementation of IPv6 PIM-DM is as follows:
S5500-EI)."
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"Configuring IPv6 multicast