Relationship Among Ipv6 Pim Protocols - HP FlexFabric 5950 series Configuration Manual

Figure 124 SPT building in IPv6 PIM-SSM
Source
Server
As shown in
their DRs to express their interest in the multicast information that the IPv6 multicast source S sends
to the IPv6 multicast group G.
After receiving a report message, the DR first checks whether the group address in the message is in
the IPv6 SSM group range and does the following:
•
If the group address is in the IPv6 SSM group range, the DR sends a subscribe message hop
by hop toward the IPv6 multicast source S. All routers along the path from the DR to the IPv6
multicast source create an (S, G) entry to build an SPT. The SPT is rooted the IPv6 multicast
source S and has the receivers as its leaves. This SPT is the transmission channel in IPv6
PIM-SSM.
•
If the group address is not in the IPv6 SSM group range, the receiver-side DR sends a (*, G) join
message to the RP. The IPv6 multicast source registers with the source-side DR.
In IPv6 PIM-SSM, the term "subscribe message" refers to a join message.

Relationship among IPv6 PIM protocols

In an IPv6 PIM network, IPv6 PIM-DM cannot run together with IPv6 PIM-SM, IPv6 BIDIR-PIM, or
IPv6 PIM-SSM. However, IPv6 PIM-SM, IPv6 BIDIR-PIM, and IPv6 PIM-SSM can run
together. Figure 125
trying to join a group.
For more information about MLD SSM mapping, see "Configuring MLD."
RP
SPT
Subscribe message
IPv6 multicast packets
Figure 124, Host B and Host C are receivers. They send MLDv2 report messages to
shows how the device selects one protocol from among them for a receiver
DR
390
Host A
Receiver
DR
Host B
Receiver
Host C