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An Architecture for Wide Area Multicast Routing

Steve Deering (Xerox), Deborah Estrin (USC), Dino Farinacci (Cisco), Van Jacobson (LBL), Ching-Gung Liu (USC), Liming Wei (USC)

One-line summary: Mcast routing that can dynamically switch between core-based trees and shortest-path trees to provide efficient behavior for both sparse and dense mcast groups, using explicit joins (rather than explicit prunes) and periodic refreshes of soft state in routers.

Overview/Main Points


Adaptive mcast routing that leverage the best of both CBT and SPT, and uses the more efficient explicit-join rather than explicit-prune. A step forward for efficiency and scalability of wide area multicast.


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