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
Answer: B
Explanation:
PIM-Bidirectional Operations
PIM Bidirectional (BIDIR) has one shared tree from sources to RP and from RP to receivers. This is unlikethe PIM-SM, which is unidirectional by nature with multiple source trees – one per (S,G) or a shared tree fromreceiver 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 ineach router.
– No data triggered events.
– Rendezvous Point (RP) router not required. The RP address only needs to be a routable address andneed not exist on a physical device.