This read-create object sets the maximum number of {source,group,interface} triplets for which the DC-PIM TIB Manager may store (S,G,I) state, with zero meaning no limit. An admin uses this to bound the most granular level of multicast state, per-source-per-group-per-interface, on devices supporting SSM with per-port tracking. For example, an admin deploying SSM to many receiver ports for many distinct sources would size this triplet limit to match the expected combination count.