Ipv6 Pim Overview; Introduction To Ipv6 Pim-Dm - 3Com MSR 50 Series Configuration Manual

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IPv6 PIM Overview

Introduction to IPv6
PIM-DM
IP 6 PIM C
V
When configuring IPv6 PIM, go to these sections for information you are
interested in:
"IPv6 PIM Overview" on page 1235
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"Configuring IPv6 PIM-DM" on page 1246
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"Configuring IPv6 PIM-SM" on page 1248
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"Configuring IPv6 PIM-SSM" on page 1256
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"Configuring IPv6 PIM Common Information" on page 1258
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"Displaying and Maintaining IPv6 PIM" on page 1263
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"IPv6 PIM Configuration Examples" on page 1263
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"Troubleshooting IPv6 PIM Configuration" on page 1275
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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, it is subject to an RPF check. 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
Configuration" on page
Based on the forwarding mechanism, IPv6 PIM falls into two modes:
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).
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n
To facilitate description, a network comprising IPv6 PIM-capable routers is referred
to as an "IPv6 PIM domain" in this document.
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:
ONFIGURATION
"IPv6 Multicast Routing and Forwarding
1209.