Configure IPv6 SSM to optimize IPv6 PIM-SM by simplifying the many-to-many model (servers-to-receivers).
Configure an IPv6 unicast protocol, for example, Routing Information Protocol Next Generation (RIPng) or Open Shortest Path First Version 3 (OSPFv3), globally and on the interfaces where you want to configure PIM.
For more information about RIPng, see RIPng Configuration using CLI. For more information about OSPFv3, see OSPFv3 Configuration using CLI.
Enable IPv6 PIM globally.
Because most multicast applications distribute content to a group in one direction, SSM uses a one-to-many model which requires only a subset of the PIM-SM features. This model is more efficient and reduces the load on multicast routing devices.
SSM is a global configuration. After you enable SSM on a switch, it is enabled on all interfaces that run PIM. On a SSM-enabled switch, SSM behavior is limited to the SSM group range.
For non-SSM groups, the protocol behavior is PIM-SM.