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Bypassing Shared Trees in MVPN Knowledge about active sources is used to eliminate inter-PE shared tree (RPT) to shortest path tree (SPT) switchover and to simplify PE-to-PE inter-site multicast routing there are no inter-PE (C-S,C-G,rtp) Prune messages In order to eliminate inter-site RPT-to-SPT switchover, PIM control procedures in MVPN context need to be modified. Those modifications are straightforward Proposed modifications of PE-to-PE multicast routing do not require changes to PIM protocol in the customer domain |