PIM-DM
Electing an RP (in brief)
The PIMv2 RFC states:
“This specification does not mandate the use of a single mechanism to provide routers with the information to perform the group-to-RP mapping. Currently four mechanisms are possible, and all four have associated problems:
Static Configuration: A PIM router MUST support the static configuration of group-to-RP mappings. Such a mechanism is not [...]
