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Source Discovery Techniques Two source discovery techniques are defined, one for PIM-SM and one for PIM-SSM Active source C-S is discovered in MVPN when: (PIM-SM): PE attached to C-RP receives the first (C-*, C-G) packet from C-S (PIM-SSM): PE attached to C-S receives the first (C-S, C-G) join, either from directly connected CE or from another PE in MVPN |