Which multicast routing protocol is most optimal for supporting many-to-many multicast applications?

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

View Answer

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.