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Which multicast routing protocol is most optimal for supporting many-to-many multicast applications?
A. PIM-SM
B. PIM-BIDIR
C. MP-BGP
D. DVMRP
E. MSDP
Correct Answer: B
Explanation/Reference:
Explanation:
PIM-Bidirectional Operations
PIM Bidirectional (BIDIR) has one shared tree from sources to RP and from RP to receivers. This is unlike the PIM-SM, which is unidirectional by nature with multiple source trees – one per (S, G) or a shared tree from receiver to RP and multiple SG trees from RP to sources.
Benefits of PIM BIDIR are as follows:
. As many sources for the same group use one and only state (*, G), only minimal states are required in each router.
. No data triggered events.
. Rendezvous Point (RP) router not required. The RP address only needs to be a routable address and need not exist on a physical device.
