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Figure 96 Relationship among IPv6 PIM protocols
IPv6 PIM support for VPNs
To support IPv6 PIM for VPNs, a multicast router that runs IPv6 PIM maintains an independent set of IPv6
PIM neighbor table, IPv6 multicast routing table, BSR information, and RP-set information for each VPN.
After receiving an IPv6 multicast data packet, the multicast router checks which VPN the IPv6 data packet
belongs to. Then, the router forwards the IPv6 packet according to the IPv6 multicast routing table for that
VPN or creates an IPv6 multicast routing entry for that VPN.
Protocols and standards
• RFC 3973, Protocol Independent Multicast-Dense Mode (PIM-DM): Protocol Specification(Revised)
• RFC 4601, Protocol Independent Multicast-Sparse Mode (PIM-SM): Protocol Specification (Revised)
• RFC 4610, Anycast-RP Using Protocol Independent Multicast (PIM)
• RFC 3956, Embedding the Rendezvous Point (RP) Address in an IPv6 Multicast Address
• RFC 5015, Bidirectional Protocol Independent Multicast (BIDIR-PIM)
• RFC 5059, Bootstrap Router (BSR) Mechanism for Protocol Independent Multicast (PIM)
• RFC 4607, Source-Specific Multicast for IP
• Draft-ietf-ssm-overview-05, An Overview of Source-Specific Multicast (SSM)
Configuring IPv6 PIM-DM
This section describes how to configure IPv6 PIM-DM.
A receiver joins IPv6 multicast group G.
G is in the IPv6
SSM group range?
IPv6 BIDIR-PIM runs for G.
IPv6 BIDIR-PIM is enabled?
G has an IPv6 BIDIR-PIM
RP?
Yes
Yes
Yes
No
IPv6 PIM-SSM runs for G.
An MLD-SSM mapping is
configured for G?
IPv6 PIM-SM runs for G.
An IPv6 multicast source is
specified?
No
Yes
No
No
No
Yes
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