Candidate core selection for load-balanced multicore shared tree multicasting

Multicasting can be done in two different ways: source based tree approach and shared tree approach. Protocols such as Core Based Tree (CBT), Protocol Independent Multicasting Sparse Mode (PIM-SM) use shared tree approach. Shared tree approach is preferred over source-based tree approach because in the latter construction of minimum cost tree per source is needed unlike a single shared tree in the former approach. Objective of the present work is two-fold: to provide a candidate core selection approach for shared tree multicasting to guard against any possible core failure and to provide an efficient load balanced multicore multicasting approach using the candidate cores.