H3C Technologies H3C SecPath F1000-E - Manual (Page 177)

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to the source. Thus, an SPT is built in the network, with the source S as its root and receivers as its
leaves. This SPT is the transmission channel in IPv6 PIM-SSM.
• If not, the IPv6 PIM-SM process is followed: the DR needs to send a (*, G) join message to the RP,
and an IPv6 multicast source registration process is needed.
NOTE:
In IPv6 PIM-SSM, the “channel” concept is used to refer to an IPv6 multicast group, and the “channel
subscription” concept is used to refer to a join message.
Protocols and Standards
IPv6 PIM–related specifications are as follows:
• RFC 4601 Protocol Independent Multicast-Sparse Mode (PIM-SM): Protocol Specification (Revised)
• RFC 3973 Protocol Independent Multicast-Dense Mode(PIM-DM):Protocol Specification(Revised)
• RFC 3956 Embedding the Rendezvous Point (RP) Address in an IPv6 Multicast Address
• RFC 4607 Source-Specific Multicast for IP
• RFC 5059 Bootstrap Router (BSR) Mechanism for Protocol Independent Multicast (PIM)
• draft-ietf-ssm-overview-05 An Overview of Source-Specific Multicast (SSM)
Configuring IPv6 PIM-DM
IPv6 PIM-DM Configuration Task List
Complete these tasks to configure IPv6 PIM-DM:
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
Configuration Prerequisites
Before configuring IPv6 PIM-DM, complete the following task:
• Configure any IPv6 unicast routing protocol so that all devices in the domain are interoperable at
the network layer.
Before configuring IPv6 PIM-DM, prepare the following data:
• The interval between state refresh messages
• Minimum time to wait before receiving a new refresh message
• Hop limit value of state-refresh messages
• Graft retry period