Relationship Among Ipv6 Pim Protocols - HP 6125XLG Ip Multicast Configuration Manual

SPT building
The decision to build an RPT for IPv6 PIM-SM or an SPT for IPv6 PIM-SSM depends on whether the IPv6
multicast group that the receiver joins is in the IPv6 SSM group range. The IPv6 SSM group range
reserved by IANA is FF3x::/32, where "x" represents any legal address scope.
Figure 96 SPT building in IPv6 PIM-SSM
Source
Server
As shown in
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 "channel" refers to an IPv6 multicast group, and 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.
how the device selects one protocol from among them for a receiver trying to join a group.
RP
SPT
Subscribe message
IPv6 multicast packets
Figure 96, Host B and Host C are receivers. They send MLDv2 report messages to their DRs
DR
288
Host A
Receiver
DR
Host B
Receiver
Host C
Figure 97 shows