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Exam 642-885 All Questions

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Exam 642-885 topic 1 question 24 discussion

Actual exam question from Cisco's 642-885
Question #: 24
Topic #: 1
[All 642-885 Questions]

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
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Suggested Answer: B 🗳️
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.

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Barakikaki
4 years, 4 months ago
"Rendezvous Point (RP) router not required. The RP address only needs to be a routable address and need not exist on a physical device." can someone please exlpain this sentence in the given explanation
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